View Filing Data

Print Document View Excel Document

Document and Entity Information - USD ($)	12 Months Ended
Document and Entity Information - USD ($)	Dec. 31, 2016	Jan. 27, 2017	Jun. 30, 2016
Entity Registrant Name	IAC/INTERACTIVECORP
Entity Central Index Key	0000891103
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Dec. 31, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 4,111,134,940
Common Stock
Entity Common Stock, Shares Outstanding		71,947,127
Class B Convertible Common Stock
Entity Common Stock, Shares Outstanding		5,789,499

CONSOLIDATED BALANCE SHEET - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
ASSETS
Cash and cash equivalents	$ 1,329,187	$ 1,481,447
Marketable securities	89,342	39,200
Accounts receivable, net of allowance of $16,405 and $16,528, respectively	220,138	250,077
Other current assets	204,068	174,286
Total current assets	1,842,735	1,945,010
Property and equipment, net	306,248	302,817
Goodwill	1,924,052	2,245,364
Intangible assets, net	355,451	440,828
Long-term investments	122,810	137,386
Other non-current assets	94,577	117,286
TOTAL ASSETS	4,645,873	5,188,691
LIABILITIES:
Current portion of long-term debt	20,000	40,000
Accounts payable, trade	62,863	86,883
Deferred revenue	285,615	258,412
Accrued expenses and other current liabilities	344,910	383,251
Total current liabilities	713,388	768,546
Long-term debt, net of current portion	1,582,484	1,726,954
Income taxes payable	33,528	33,692
Deferred income taxes	228,798	348,773
Other long-term liabilities	44,178	64,510
Redeemable noncontrolling interests	32,827	30,391
Commitments and contingencies
SHAREHOLDERS' EQUITY:
Additional paid-in capital	11,921,559	11,486,315
Retained earnings	290,114	331,394
Accumulated other comprehensive loss	(166,123)	(152,103)
Treasury stock 193,444,655 and 187,137,267 shares, respectively	(10,176,600)	(9,861,350)
Total IAC shareholders' equity	1,869,222	1,804,526
Noncontrolling interests	141,448	411,299
Total shareholders' equity	2,010,670	2,215,825
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	4,645,873	5,188,691
Common Stock
SHAREHOLDERS' EQUITY:
Common stock	256	254
Class B Convertible Common Stock
SHAREHOLDERS' EQUITY:
Common stock	$ 16	$ 16

CONSOLIDATED BALANCE SHEET (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Accounts receivable allowance	$ 16,405	$ 16,528
Treasury stock, shares	193,444,655	187,137,267
Common Stock
Common stock, par value (in usd per share)	$ 0.001	$ 0.001
Common stock, authorized shares	1,600,000,000	1,600,000,000
Common stock, issued shares	255,672,125	254,014,976
Common stock, outstanding shares	72,595,470	77,245,709
Class B Convertible Common Stock
Common stock, par value (in usd per share)	$ 0.001	$ 0.001
Common stock, authorized shares	400,000,000	400,000,000
Common stock, issued shares	16,157,499	16,157,499
Common stock, outstanding shares	5,789,499	5,789,499

CONSOLIDATED STATEMENT OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenue	$ 3,139,882	$ 3,230,933	$ 3,109,547
Operating costs and expenses:
Cost of revenue (exclusive of depreciation shown separately below)	755,730	778,161	860,204
Selling and marketing expense	1,245,263	1,345,576	1,147,409
General and administrative expense	547,160	525,629	443,610
Product development expense	197,885	185,766	160,515
Depreciation	71,676	62,205	61,156
Amortization of intangibles	79,426	139,952	57,926
Goodwill impairment	275,367	14,056	0
Total operating costs and expenses	3,172,507	3,051,345	2,730,820
Operating (loss) income	(32,625)	179,588	378,727
Interest expense	(109,110)	(73,636)	(56,314)
Other income (expense), net	60,461	36,921	(52,484)
(Loss) earnings from continuing operations before income taxes	(81,274)	142,873	269,929
Income tax benefit (provision)	64,934	(29,516)	(35,372)
(Loss) earnings from continuing operations	(16,340)	113,357	234,557
Earnings from discontinued operations, net of tax	189	17	174,673
Net (loss) earnings	(16,151)	113,374	409,230
Net (earnings) loss attributable to noncontrolling interests	(25,129)	6,098	5,643
Net (loss) earnings attributable to IAC shareholders	$ (41,280)	$ 119,472	$ 414,873
Per share information attributable to IAC shareholders:
Basic (loss) earnings per share from continuing operations (in usd per share)	$ (0.52)	$ 1.44	$ 2.88
Diluted (loss) earnings per share from continuing operations (in usd per share)	(0.52)	1.33	2.71
Basic (loss) earnings per share (in usd per share)	(0.52)	1.44	4.98
Diluted (loss) earnings per share (in usd per share)	(0.52)	1.33	4.68
Dividends declared per share (in usd per share)	$ 0	$ 1.36	$ 1.16
Stock-based compensation expense by function:
Stock-based compensation expense	$ 104,820	$ 105,450	$ 59,634
Cost of revenue
Stock-based compensation expense by function:
Stock-based compensation expense	2,305	1,210	949
Selling and marketing expense
Stock-based compensation expense by function:
Stock-based compensation expense	6,000	10,186	2,144
General and administrative expense
Stock-based compensation expense by function:
Stock-based compensation expense	77,151	82,798	49,862
Product development expense
Stock-based compensation expense by function:
Stock-based compensation expense	$ 19,364	$ 11,256	$ 6,679

CONSOLIDATED STATEMENT OF COMPREHENSIVE OPERATIONS - USD ($)
$ in Thousands

12 Months Ended

Dec. 31, 2016

Dec. 31, 2015

Dec. 31, 2014

Statement of Comprehensive Income [Abstract]

Net (loss) earnings

$ (16,151)

$ 113,374

$ 409,230

Other comprehensive (loss) income, net of tax:

Change in foreign currency translation adjustment (a)

^[1]

(43,126)

(68,844)

(66,874)

Change in unrealized gains and losses of available-for-sale securities (net of tax benefits of $884 and $1,852 in 2016 and 2014, respectively, and tax provision of $576 in 2015) (b)

^[2]

1,484

3,140

(8,591)

Total other comprehensive loss

(41,642)

(65,704)

(75,465)

Comprehensive (loss) income

(57,793)

47,670

333,765

Comprehensive (income) loss attributable to noncontrolling interests

(18,638)

7,399

6,454

Comprehensive (loss) income attributable to IAC shareholders

$ (76,431)

$ 55,069

$ 340,219

[1]	The years ended December 31, 2016 and 2015 include amounts reclassified out of other comprehensive income into earnings. See "Note 11—Accumulated Other Comprehensive Loss" for additional information.
[2]	The years ended December 31, 2016 and 2015 include unrealized gains reclassified out of other comprehensive income into earnings. See "Note 6—Marketable Securities" and "Note 11—Accumulated Other Comprehensive Loss" for additional information.

CONSOLIDATED STATEMENT OF COMPREHENSIVE OPERATIONS (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Change in unrealized gains and losses of available-for-sale securities, tax provision (benefits)	$ (884)	$ 576	$ (1,852)

CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Redeemable Noncontrolling Interests	Total IAC Shareholders' Equity	Common Stock Common Stock	Common Stock Class B Convertible Common Stock	Additional Paid-in Capital	(Accumulated Deficit) Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock	Noncontrolling Interests
Balance at beginning of period at Dec. 31, 2013	$ 1,729,401			$ 1,686,736	$ 251	$ 16	$ 11,562,567	$ (32,735)	$ (13,046)	$ (9,830,317)	$ 42,665
Balance at the beginning of the period (in shares) at Dec. 31, 2013					250,982	16,157
Increase (Decrease) in Shareholders' Equity
Net (loss) earnings for period	414,873			414,873				414,873
Other comprehensive income (loss), net of tax	(74,551)			(74,654)					(74,654)		103
Stock-based compensation expense	59,076			59,362			59,362				(286)
Issuance of common stock pursuant to stock-based awards, net of withholding taxes	1,628			1,628	$ 1		(167,340)			168,967
Issuance of common stock pursuant to stock-based awards, net of withholding taxes (in shares)					1,188
Income tax benefit related to stock-based awards	37,451			37,451			37,451
Dividends	(96,577)			(96,577)			(39,557)	(57,020)
Adjustment of redeemable noncontrolling interests and noncontrolling interests to fair value	(27,750)			(37,119)			(37,119)				9,369
Repurchase of stock-based awards / Purchase of noncontrolling interests / Purchase of redeemable noncontrolling interests	(50,662)										(50,662)
Other	253			253			253
Balance at end of period at Dec. 31, 2014	1,993,142			1,991,953	$ 252	$ 16	11,415,617	325,118	(87,700)	(9,661,350)	1,189
Balance at the end of the period (in shares) at Dec. 31, 2014					252,170	16,157
Balance at the beginning of period at Dec. 31, 2013			$ 42,861
Increase (Decrease) in Temporary Equity
Net (loss) earnings for period			(5,643)
Other comprehensive loss, net of tax			(914)
Stock-based compensation expense			558
Noncontrolling interests related to acquisitions			17,886
Purchase of redeemable noncontrolling interests			(41,743)
Adjustment of redeemable noncontrolling interests and noncontrolling interests to fair value			27,750
Other			(328)
Balance at the end of period at Dec. 31, 2014			40,427
Increase (Decrease) in Shareholders' Equity
Net (loss) earnings for period	121,111			119,472				119,472			1,639
Other comprehensive income (loss), net of tax	(64,403)			(64,403)					(64,403)
Stock-based compensation expense	92,493			87,685			87,685				4,808
Issuance of common stock pursuant to stock-based awards, net of withholding taxes	(37,731)			(37,731)	$ 2		(37,733)
Issuance of common stock pursuant to stock-based awards, net of withholding taxes (in shares)					1,845
Income tax benefit related to stock-based awards	44,577			44,577			44,577
Dividends	(113,196)			(113,196)				(113,196)
Purchase of treasury stock	(200,000)	$ (200,000)		(200,000)						(200,000)
Adjustment of redeemable noncontrolling interests and noncontrolling interests to fair value	(23,155)			(23,155)			(23,155)
Repurchase of stock-based awards / Purchase of noncontrolling interests / Purchase of redeemable noncontrolling interests	(23,431)										(23,431)
Issuance of Match Group common stock pursuant to stock-based awards, net of withholding taxes / Noncontrolling interests related to Match Group IPO, net of fees	428,283										428,283
Transfer from noncontrolling interests to redeemable noncontrolling interests	(1,189)										(1,189)
Other	(676)			(676)			(676)
Balance at end of period at Dec. 31, 2015	2,215,825			1,804,526	$ 254	$ 16	11,486,315	331,394	(152,103)	(9,861,350)	411,299
Balance at the end of the period (in shares) at Dec. 31, 2015					254,015	16,157
Increase (Decrease) in Temporary Equity
Net (loss) earnings for period			(7,737)
Other comprehensive loss, net of tax			(1,301)
Stock-based compensation expense			6,725
Purchase of redeemable noncontrolling interests			(32,207)
Adjustment of redeemable noncontrolling interests and noncontrolling interests to fair value			23,155
Transfer from noncontrolling interests to redeemable noncontrolling interests			1,189
Other			140
Balance at the end of period at Dec. 31, 2015	30,391		30,391
Increase (Decrease) in Shareholders' Equity
Net (loss) earnings for period	(12,302)			(41,280)				(41,280)			28,978
Other comprehensive income (loss), net of tax	(42,027)			(35,151)					(35,151)		(6,876)
Stock-based compensation expense	94,724			50,201			50,201				44,523
Issuance of common stock pursuant to stock-based awards, net of withholding taxes	(770)			(770)	$ 2		(772)
Issuance of common stock pursuant to stock-based awards, net of withholding taxes (in shares)					1,657
Income tax benefit related to stock-based awards	49,406			49,406			49,406
Purchase of treasury stock	(315,250)	$ (315,300)		(315,250)						(315,250)
Adjustment of redeemable noncontrolling interests and noncontrolling interests to fair value	(7,560)			(7,560)			(7,560)
Repurchase of stock-based awards / Purchase of noncontrolling interests / Purchase of redeemable noncontrolling interests	(211)										(211)
Issuance of Match Group common stock pursuant to stock-based awards, net of withholding taxes / Noncontrolling interests related to Match Group IPO, net of fees	10,224										10,224
Reallocation of accumulated other comprehensive loss (income) related to the noncontrolling interests created in the Match Group IPO	0			363,638			342,507		21,131		(363,638)
Changes in noncontrolling interests of Match Group due to the issuance of its common stock	0			(7,691)			(7,691)				7,691
Noncontrolling interests created in an acquisition	22,033			12,222			12,222				9,811
Other	(3,422)			(3,069)			(3,069)				(353)
Balance at end of period at Dec. 31, 2016	2,010,670			$ 1,869,222	$ 256	$ 16	$ 11,921,559	$ 290,114	$ (166,123)	$ (10,176,600)	$ 141,448
Balance at the end of the period (in shares) at Dec. 31, 2016					255,672	16,157
Increase (Decrease) in Temporary Equity
Net (loss) earnings for period			(3,849)
Other comprehensive loss, net of tax			385
Stock-based compensation expense			1,632
Purchase of redeemable noncontrolling interests			(2,529)
Adjustment of redeemable noncontrolling interests and noncontrolling interests to fair value			7,921
Other			(1,124)
Balance at the end of period at Dec. 31, 2016	$ 32,827		$ 32,827

CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash flows from operating activities attributable to continuing operations:
Net (loss) earnings	$ (16,151)	$ 113,374	$ 409,230
Less: earnings from discontinued operations, net of tax	189	17	174,673
(Loss) earnings from continuing operations	(16,340)	113,357	234,557
Adjustments to reconcile (loss) earnings from continuing operations to net cash provided by operating activities attributable to continuing operations:
Stock-based compensation expense	104,820	105,450	59,634
Depreciation	71,676	62,205	61,156
Amortization of intangibles	79,426	139,952	57,926
Goodwill impairment	275,367	14,056	0
Impairment of long-term investments	10,680	6,689	66,601
Excess tax benefits from stock-based awards	(51,764)	(56,418)	(44,957)
Deferred income taxes	(119,181)	(59,786)	76,869
Equity in losses (earnings) of unconsolidated affiliates	549	(772)	9,697
Acquisition-related contingent consideration fair value adjustments	2,555	(15,461)	(13,367)
Gains on sale of businesses, investments and assets, net	(50,965)	(1,005)	(21,946)
Gain on real estate transaction	0	(34,341)	0
Other adjustments, net	4,734	26,496	20,789
Changes in assets and liabilities, net of effects of acquisitions and dispositions:
Accounts receivable	1,283	(29,680)	(19,918)
Other assets	(12,905)	(21,174)	(3,606)
Accounts payable and other current liabilities	(52,359)	8,756	4,963
Income taxes payable	8,998	24,167	(94,492)
Deferred revenue	35,803	66,914	30,142
Net cash provided by operating activities attributable to continuing operations	292,377	349,405	424,048
Cash flows from investing activities attributable to continuing operations:
Acquisitions, net of cash acquired	(18,403)	(617,402)	(259,391)
Capital expenditures	(78,039)	(62,049)	(57,233)
Investments in time deposits	(87,500)	0	0
Proceeds from maturities of time deposits	87,500	0	0
Proceeds from maturities and sales of marketable debt securities	252,369	218,462	21,644
Purchases of marketable debt securities	(313,943)	(93,134)	(175,826)
Purchases of investments	(12,565)	(34,470)	(24,334)
Net proceeds from the sale of businesses, investments and assets	172,228	9,413	58,388
Other, net	11,215	(3,541)	(3,042)
Net cash provided by (used in) investing activities attributable to continuing operations	12,862	(582,721)	(439,794)
Cash flows from financing activities attributable to continuing operations:
Borrowings under Match Group Term Loan	0	788,000	0
Principal payments on Match Group Term Loan	(450,000)	0	0
Proceeds from Match Group 2016 Senior Notes offering	400,000	0	0
Principal payments on IAC debt, including redemptions and repurchases of Senior Notes	(126,409)	(80,000)	0
Debt issuance costs	(7,811)	(19,050)	(383)
Fees and expenses related to note exchange	0	(6,954)	0
Proceeds from Match Group initial public offering, net of fees and expenses	0	428,789	0
Purchase of treasury stock	(308,948)	(200,000)	0
Dividends	0	(113,196)	(97,338)
Issuance of IAC common stock pursuant to stock-based awards, net of withholding taxes	(895)	(38,418)	1,609
Issuance of Match Group common stock pursuant to stock-based awards, net of withholding taxes	9,548	0	0
Repurchase of stock-based awards	0	(23,431)	0
Excess tax benefits from stock-based awards	51,764	56,418	44,957
Purchase of noncontrolling interests	(2,740)	(32,207)	(33,165)
Acquisition-related contingent consideration payments	(2,180)	(5,750)	(8,109)
Funds held in escrow for MyHammer tender offer	(10,548)	0	0
Other, net	(2,846)	(19,393)	11,449
Net cash (used in) provided by financing activities attributable to continuing operations	(451,065)	734,808	(80,980)
Total cash (used in) provided by continuing operations	(145,826)	501,492	(96,726)
Total cash used in discontinued operations	0	(152)	(145)
Effect of exchange rate changes on cash and cash equivalents	(6,434)	(10,298)	(13,168)
Net (decrease) increase in cash and cash equivalents	(152,260)	491,042	(110,039)
Cash and cash equivalents at beginning of period	1,481,447	990,405	1,100,444
Cash and cash equivalents at end of period	$ 1,329,187	$ 1,481,447	$ 990,405

ORGANIZATION

12 Months Ended

Dec. 31, 2016

Organization, Consolidation and Presentation of Financial Statements [Abstract]

ORGANIZATION

IAC is a leading media and Internet company comprised of widely known consumer brands, such as HomeAdvisor, Vimeo, Dictionary.com, The Daily Beast, Investopedia, and Match Group's online dating portfolio, which includes Match, Tinder, PlentyOfFish and OkCupid.

All references to "IAC," the "Company," "we," "our" or "us" in this report are to IAC/InterActiveCorp.

The Company has six reportable segments, which are described below.

Match Group

Our Match Group segment includes the dating and non-dating businesses of Match Group, Inc., which completed its initial public offering ("IPO") on November 24, 2015. As of December 31, 2016, IAC’s ownership interest and voting interest in Match Group were 82.5% and 97.9%, respectively.

Our Match Group segment consists of our North America dating business (which includes Match, Tinder, PlentyOfFish, OkCupid, our various affinity brands and other dating businesses operating within the United States and Canada), our International dating business (which includes Meetic, Pairs, Twoo, the international operations of Tinder and PlentyOfFish and all other dating businesses operating outside of the United States and Canada) and Match Group's non-dating business, The Princeton Review.

Through the brands within our dating business, we are a leading provider of membership-based and ad-supported dating products servicing North America, Western Europe and many other regions around the world. We provide these services through websites and applications that we own and operate.

Match Group's non-dating business consists of The Princeton Review, which provides a variety of educational test preparation, academic tutoring and college counseling services.

HomeAdvisor

HomeAdvisor is a leading global home services digital marketplace that helps connect consumers with home professionals in North America, as well as in France, the Netherlands and Italy under various brands. On November 3, 2016, HomeAdvisor acquired a controlling interest in MyHammer Holding AG, the leading home services marketplace in Germany.

Video

Our Video segment consists primarily of Vimeo, Electus, CollegeHumor, Notional, IAC Films and Daily Burn.

Vimeo operates a global video sharing platform for creators and their audiences. Through Vimeo, we offer video creators simple, professional grade tools to share, manage, distribute and monetize content online, and provide viewers with a clutter-free environment to watch content across a variety of Internet-enabled devices, including mobile devices and connected television platforms.

Electus provides production and producer services for both unscripted and scripted television, feature film and digital content, primarily for initial sale and distribution in the United States. Our content is distributed on a wide range of platforms, including broadcast television, premium and basic cable television, subscription-based and ad-supported video-on-demand services and through theatrical releases and other outlets. Electus also operates Electus Digital, which consists of the following websites and properties: CollegeHumor.com, Dorkly.com and WatchLOUD.com; YouTube channels WatchLOUD, Nuevon and Hungry; and Big Breakfast (a production company). Through Electus, we also operate Notional.

Daily Burn is a health and fitness property that provides streaming fitness and workout videos across a variety of platforms, including iOS, Android, Roku and other Internet-enabled television platforms.

Applications

Our Applications segment includes Consumer, which includes our direct-to-consumer downloadable desktop applications, including Apalon, which houses our mobile applications operations, and SlimWare, which houses our downloadable desktop software and services operations; and Partnerships, which includes our business-to-business partnership operations.

Through our Consumer business, we develop, market and distribute a variety of applications, including desktop applications through which users can access search services and which are tailored to a number of specific online uses. Apalon is an award-winning mobile development company with one of the largest and most popular portfolios of mobile applications worldwide. SlimWare is a provider of community-powered software and services that clean, repair, update and optimize personal computers.

Through our Partnerships business, we work closely with partners in the software, media and other industries to design and develop customized browser-based search applications to be bundled and distributed with these partners’ products and services.

Publishing

The Publishing segment includes our Premium Brands business, which is composed of About.com, Dictionary.com, Investopedia and The Daily Beast; and our Ask & Other business, which primarily includes Ask.com, CityGrid and, for periods prior to its sale on June 30, 2016, ASKfm.

Premium Brands

Our Premium Brands business primarily consists of the following destination websites:


•	About.com, which provides detailed information and content written by independent, freelance subject matter experts;


•	Dictionary.com, which primarily provides online and mobile dictionary, thesaurus and reference services;


•	Investopedia, a resource for investment and personal finance education and information; and


•	The Daily Beast, a website dedicated to news, commentary, culture and entertainment that curates and publishes existing and original online content from its own roster of contributors in the United States.

During 2016, About.com evolved from a general content website to a collection of vertical brands by transitioning content from the various network channels on its general content website to stand-alone vertical domains, each with its own unique branding and user experience. To date, content from four network channels (specifically, Health, Money, Tech, and Home) has been transitioned to four verticals (Verywell.com, TheBalance.com, Lifewire.com and TheSpruce.com, respectively).

Ask & Other

Our Ask & Other business primarily consists of:


•	Ask.com, which provides general search services, as well as question and answer services that provide direct answers to natural-language questions;


•	CityGrid, an advertising network that integrates local content and advertising for distribution to affiliated and third party publishers across web and mobile platforms; and


•	For periods prior to its sale on June 30, 2016, ASKfm, a questions and answers social network.

Other

Our Other segment consisted of ShoeBuy, an Internet retailer of footwear and related apparel and accessories, and PriceRunner, a shopping comparison website. ShoeBuy and PriceRunner were sold on December 30, 2016 and March 18, 2016, respectively.

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

12 Months Ended

Dec. 31, 2016

Accounting Policies [Abstract]

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation

The Company prepares its consolidated financial statements in accordance with U.S. generally accepted accounting principles ("GAAP").

Basis of Consolidation and Accounting for Investments

The consolidated financial statements include the accounts of the Company, all entities that are wholly-owned by the Company and all entities in which the Company has a controlling financial interest. Intercompany transactions and accounts have been eliminated.

Investments in the common stock or in-substance common stock of entities in which the Company has the ability to exercise significant influence over the operating and financial matters of the investee, but does not have a controlling financial interest, are accounted for using the equity method. Investments in the common stock or in-substance common stock of entities in which the Company does not have the ability to exercise significant influence over the operating and financial matters of the investee are accounted for using the cost method. Investments in companies that IAC does not control, which are not in the form of common stock or in-substance common stock, are also accounted for using the cost method. The Company evaluates each cost and equity method investment for impairment on a quarterly basis and recognizes an impairment loss if a decline in value is determined to be other-than-temporary. Such impairment evaluations include, but are not limited to: the current business environment, including competition; going concern considerations such as financial condition, the rate at which the investee utilizes cash and the investee's ability to obtain additional financing to achieve its business plan; the need for changes to the investee's existing business model due to changing business and regulatory environments and its ability to successfully implement necessary changes; and comparable valuations. If the Company has not identified events or changes in circumstances that may have a significant adverse effect on the fair value of a cost method investment, then the fair value of such cost method investment is not estimated, as it is impracticable to do so.

Accounting Estimates

Management of the Company is required to make certain estimates, judgments and assumptions during the preparation of its consolidated financial statements in accordance with GAAP. These estimates, judgments and assumptions impact the reported amounts of assets, liabilities, revenue and expenses and the related disclosure of contingent assets and liabilities. Actual results could differ from these estimates.

On an ongoing basis, the Company evaluates its estimates and judgments including those related to: the fair values of marketable securities and other investments; the recoverability of goodwill and indefinite-lived intangible assets; the useful lives and recoverability of definite-lived intangible assets and property and equipment; the carrying value of accounts receivable, including the determination of the allowance for doubtful accounts; the determination of revenue reserves; the fair value of acquisition-related contingent consideration arrangements; the liabilities for uncertain tax positions; the valuation allowance for deferred income tax assets; and the fair value of and forfeiture rates for stock-based awards, among others. The Company bases its estimates and judgments on historical experience, its forecasts and budgets and other factors that the Company considers relevant.

Revenue Recognition

The Company recognizes revenue when persuasive evidence of an arrangement exists, services are rendered or merchandise is delivered to customers, the fee or price charged is fixed or determinable and collectability is reasonably assured. Deferred revenue is recorded when payments are received, or contractually due, in advance of the Company's rendering of services or delivery of merchandise.

Match Group

Revenue of the dating businesses is substantially derived directly from users in the form of recurring membership fees for subscription-based online personals and related services. Membership revenue is presented net of credits and credit card chargebacks. Members pay in advance, primarily by using a credit card or through mobile app stores, and, subject to certain conditions identified in our terms and conditions, all purchases are final and nonrefundable. Fees collected, or contractually due, in advance for memberships are deferred and recognized using the straight-line method over the terms of the applicable membership period, which primarily range from one to six months, and corresponding mobile app store fees incurred on such transactions, if any, are deferred and expensed over the same period. Deferred revenue at Dating is $161.1 million and $144.4 million at December 31, 2016 and 2015, respectively. Revenue is also earned from online advertising, the purchase of à la carte features and offline events. Online advertising revenue is recognized every time an advertisement is displayed. Revenue from the purchase of à la carte features is recognized based on usage. Revenue and the related expenses associated with offline events are recognized when each event occurs.

Non-dating's revenue consists primarily of fees received directly from students for in-person and online test preparation classes, access to online test preparation materials and individual tutoring services. Fees from classes and access to online materials are recognized over the period of the course and the period of the online access, respectively. Tutoring fees are recognized based on usage. Deferred revenue at Non-dating is $23.3 million and $25.7 million at December 31, 2016 and 2015, respectively.

HomeAdvisor

HomeAdvisor's lead acceptance revenue is generated and recognized when an in-network home service professional is delivered a consumer lead. HomeAdvisor's membership subscription revenue is generated through subscription sales to service professionals and is deferred and recognized over the term of the applicable membership. Membership can be one month, three months, or one year. HomeAdvisor's website hosting revenue is deferred and recognized over the period of the hosting agreement. Deferred revenue at HomeAdvisor is $18.8 million and $11.9 million at December 31, 2016 and 2015, respectively.

Video

Revenue of businesses included in this segment is generated primarily through media production and distribution, subscriptions and advertising. Production revenue is recognized when the production is available for the customer to broadcast or exhibit, subscription fee revenue is recognized over the terms of the applicable subscriptions, which are one month or one year, and advertising revenue is recognized when an ad is displayed or over the period earned. Deferred revenue at Vimeo is $36.7 million and $30.4 million at December 31, 2016 and 2015, respectively. Deferred revenue at Electus, CollegeHumor and Notional totals $23.1 million and $24.4 million at December 31, 2016 and 2015, respectively.

Applications

Substantially all of Applications' revenue consists of advertising revenue generated principally through the display of paid listings in response to search queries. The substantial majority of the paid listings displayed by our Applications businesses are supplied to us by Google Inc. ("Google") pursuant to our services agreement with Google.

Pursuant to this agreement, those of our Applications businesses that provide search services transmit search queries to Google, which in turn transmits a set of relevant and responsive paid listings back to these businesses for display in search results. This ad-serving process occurs independently of, but concurrently with, the generation of algorithmic search results for the same search queries. Google paid listings are displayed separately from algorithmic search results and are identified as sponsored listings on search results pages. Paid listings are priced on a price per click basis and when a user submits a search query through one of our Applications businesses and then clicks on a Google paid listing displayed in response to the query, Google bills the advertiser that purchased the paid listing directly and shares a portion of the fee charged to the advertiser with us. We recognize paid listing revenue from Google when it delivers the user's click. In cases where the user’s click is generated due to the efforts of a third party distributor, we recognize the amount due from Google as revenue and record a revenue share or other payment obligation to the third party distributor as traffic acquisition costs.

To a significantly lesser extent, Applications' revenue also consists of fees related to subscription downloadable applications which are recognized over the terms of the applicable subscriptions, primarily one to two years, and fees related to paid mobile downloadable applications and display advertisements, which are recognized at the time of the sale and when the ad is displayed, respectively. Deferred revenue at SlimWare is $26.1 million and $21.0 million at December 31, 2016 and 2015, respectively.

Publishing

Publishing's revenue consists principally of advertising revenue, which is generated primarily through the display of paid listings in response to search queries, display advertisements (sold directly and through programmatic ad sales) and fees related to paid mobile downloadable applications. The substantial majority of the paid listings that our Publishing businesses display are supplied to us by Google in the manner and pursuant to the services agreement with Google, which is described above under "Applications."

Other

ShoeBuy's revenue consisted of merchandise sales, reduced by incentive discounts and sales returns, and was recognized when delivery to the customer had occurred. Delivery was considered to have occurred when the customer took title and assumed the risks and rewards of ownership, which was on the date of shipment. Accruals for returned merchandise were based on historical experience. Shipping and handling fees billed to customers was recorded as revenue. The costs associated with shipping goods to customers were recorded as cost of revenue.

PriceRunner's revenue consisted principally of advertising revenue that, depending on the terms of the arrangement, was recognized when a user clicked on an ad, or when a user clicked-through on the ad and took a specified action on the destination site.

Cash and Cash Equivalents

Cash and cash equivalents include cash and short-term investments, with maturities of less than 91 days from the date of purchase. Domestically, cash equivalents primarily consist of AAA rated government money market funds, commercial paper rated A1/P1 or better and treasury discount notes. Internationally, cash equivalents primarily consist of AAA rated treasury money market funds and time deposits.

Marketable Securities

At December 31, 2016, marketable securities consist of commercial paper rated A1/P1, treasury discount notes and short-to-medium-term debt securities issued by investment grade corporate issuers. The Company invests in marketable debt securities with active secondary or resale markets to ensure portfolio liquidity to fund current operations or satisfy other cash requirements as needed. The Company also invests in marketable equity securities as part of its investment strategy. All marketable securities are classified as available-for-sale and are reported at fair value. The unrealized gains and losses on marketable securities, net of tax, are included in accumulated other comprehensive income as a separate component of shareholders' equity. The specific-identification method is used to determine the cost of securities sold and the amount of unrealized gains and losses reclassified out of accumulated other comprehensive income into earnings.

The Company employs a methodology that considers available evidence in evaluating potential other-than-temporary impairments of its investments. Investments are considered to be impaired when a decline in fair value below the amortized cost basis is determined to be other-than-temporary. Factors considered in determining whether a loss is other-than-temporary include the length of time and extent to which fair value has been less than the amortized cost basis, the financial condition and near-term prospects of the issuer, and whether it is not more likely than not that the Company will be required to sell the security before the recovery of the amortized cost basis, which may be maturity. If a decline in fair value is determined to be other-than-temporary, an impairment charge is recorded in current earnings and a new cost basis in the investment is established.

Certain Risks and Concentrations

A significant portion of the Company's revenue is derived from online advertising, the market for which is highly competitive and rapidly changing. Significant changes in this industry or changes in advertising spending behavior or in customer buying behavior could adversely affect our operating results. Most of the Company's online advertising revenue is attributable to a services agreement with Google. For the years ended December 31, 2016, 2015 and 2014, revenue from Google represents 26%, 40% and 45%, respectively, of the Company's consolidated revenue. The Company's service agreement became effective on April 1, 2016, following the expiration of the previous services agreement. The services agreement expires on March 31, 2020; however, the Company may choose to terminate the agreement effective March 31, 2019. The services agreement requires that we comply with certain guidelines promulgated by Google. Google may generally unilaterally update its policies and guidelines without advance notice, which could in turn require modifications to, or prohibit and/or render obsolete certain of our products, services and/or business practices, which could be costly to address or otherwise have an adverse effect on our business, financial condition and results of operations. For the years ended December 31, 2016, 2015 and 2014, revenue earned from Google is $824.4 million, $1.3 billion and $1.4 billion, respectively. This revenue is earned by the businesses comprising the Applications and Publishing segments. For the years ended December 31, 2016, 2015 and 2014, Google revenue represents 87% and 73%; 94% and 83%; and 97% and 83%, of Applications and Publishing revenue, respectively. Accounts receivable related to revenue earned from Google totaled $65.8 million and $97.2 million at December 31, 2016 and 2015, respectively.

The Company's business is subject to certain risks and concentrations including dependence on third-party technology providers, exposure to risks associated with online commerce security and credit card fraud.

Financial instruments, which potentially subject the Company to concentration of credit risk, consist primarily of cash and cash equivalents and marketable securities. Cash and cash equivalents are maintained with financial institutions and are in excess of Federal Deposit Insurance Corporation insurance limits.

Accounts Receivable

Accounts receivable are stated at amounts due from customers, net of an allowance for doubtful accounts and revenue reserves. Accounts receivable outstanding longer than the contractual payment terms are considered past due. The Company determines its allowance by considering a number of factors, including the length of time accounts receivable are past due, the Company's previous loss history, the specific customer's ability to pay its obligation to the Company and the condition of the general economy and the customer's industry. The Company writes off accounts receivable when they become uncollectible. The Company also maintains allowances to reserve for potential credits issued to customers or other revenue adjustments. The amounts of these reserves are based, in part, on historical experience.

Property and Equipment

Property and equipment, including significant improvements, are recorded at cost. Repairs and maintenance costs are expensed as incurred. Depreciation is computed using the straight-line method over the estimated useful lives of the assets, or, in the case of leasehold improvements, the lease term, if shorter.



Asset Category	Estimated Useful Lives
Buildings and leasehold improvements	3 to 39 Years
Computer equipment and capitalized software	2 to 3 Years
Furniture and other equipment	3 to 12 Years

The Company capitalizes certain internal use software costs including external direct costs utilized in developing or obtaining the software and compensation for personnel directly associated with the development of the software. Capitalization of such costs begins when the preliminary project stage is complete and ceases when the project is substantially complete and ready for its intended purpose. The net book value of capitalized internal use software is $46.9 million and $39.6 million at December 31, 2016 and 2015, respectively.

Business Combinations

The purchase price of each acquisition is attributed to the assets acquired and liabilities assumed based on their fair values at the date of acquisition, including identifiable intangible assets that either arise from a contractual or legal right or are separable from goodwill. The fair value of these intangible assets is based on detailed valuations that use information and assumptions provided by management. The excess purchase price over the net tangible and identifiable intangible assets is recorded as goodwill and is assigned to the reporting unit(s) that is expected to benefit from the combination as of the acquisition date.

In connection with certain business combinations, the Company has entered into contingent consideration arrangements that are determined to be part of the purchase price. Each of these arrangements are initially recorded at its fair value at the time of the acquisition and reflected at current fair value for each subsequent reporting period thereafter until settled. The contingent consideration arrangements are generally based upon earnings performance and/or operating metrics. The Company determines the fair value of the contingent consideration arrangements using probability-weighted analyses to determine the amounts of the gross liability, and, if the arrangement is long-term in nature, applying a discount rate that appropriately captures the risk associated with the obligation to determine the net amount reflected in the consolidated financial statements. Determining the fair value of these arrangements is inherently difficult and subjective. Significant changes in forecasted earnings or operating metrics would result in a significantly higher or lower fair value measurement and can have a material impact on our consolidated financial statements. The changes in the remeasured fair value of the contingent consideration arrangements during each reporting period, including the accretion of the discount, if applicable, are recognized in “General and administrative expense” in the accompanying consolidated statement of operations. See "Note 8—Fair Value Measurements and Financial Instruments" for a discussion of contingent consideration arrangements.

Goodwill and Indefinite-Lived Intangible Assets

Goodwill acquired in a business combination is assigned to the reporting unit(s) that is expected to benefit from the combination as of the acquisition date. The Company assesses goodwill and indefinite-lived intangible assets for impairment annually as of October 1, or, more frequently, if an event occurs or circumstances change that would more likely than not reduce the fair value of a reporting unit or the fair value of an indefinite-lived intangible asset below its carrying value.

When the Company elects to perform a qualitative assessment and concludes it is not more likely than not that the fair value of the reporting unit is less than its carrying value, no further assessment of that reporting unit's goodwill is necessary; otherwise, a quantitative assessment is performed and the fair value of the reporting unit is determined. If the carrying value of the reporting unit exceeds its fair value, the implied fair value of the reporting unit's goodwill is calculated (in the same manner as a business combination) and an impairment loss equal to the excess is recorded.

For the Company's annual goodwill test at October 1, 2016, a qualitative assessment of the Match Group, HomeAdvisor Domestic, HomeAdvisor International, Vimeo, Daily Burn and ShoeBuy reporting units' goodwill was performed because the Company concluded it was more likely than not that the fair value of these reporting units was in excess of their respective carrying values. The primary factors that the Company considered in its qualitative assessment for each of these reporting units is described below:


•	Match Group's October 1, 2016 market capitalization of $4.8 billion exceeded its carrying value by more than 970% and Match Group's strong operating performance.

•

The Company performed valuations of the HomeAdvisor Domestic, HomeAdvisor International, Vimeo and Daily Burn reporting units during 2016. These valuations were prepared primarily in connection with the issuance and/or settlement of equity grants that are denominated in the shares of these businesses. The valuations were prepared time proximate to, however, not as of October 1, 2016. The fair value of each of these businesses was significantly in excess of its October 1, 2016 carrying value.


•	ShoeBuy's expected sales price was significantly in excess of its October 1, 2016 carrying value; which was confirmed by the sales price realized in its sale on December 30, 2016, which resulted in a pre-tax gain of $37.5 million.

For the Company's annual goodwill test at October 1, 2016, the Company concluded that it was not more likely than not that the fair values of the Applications and Connected Ventures reporting units were greater than their respective carrying values and performed a quantitative test of these reporting units. The Company's quantitative test indicated that the fair value of each of these reporting units is in excess of its respective carrying value; therefore, the goodwill of these reporting units is not impaired. The Publishing reporting unit had no goodwill as of October 1, 2016 because the Company recorded an impairment charge equal to the entire $275.4 million balance of the Publishing reporting unit goodwill during the second quarter of 2016, which is more fully described below, following a quantitative impairment test as of June 30, 2016.

The fair value of the Company's reporting units is determined using both an income approach based on discounted cash flows ("DCF") and a market approach when it tests goodwill for impairment, either on an interim basis or annual basis as of October 1 each year. The Company uses the same approach in determining the fair value of its businesses in connection with its subsidiary denominated stock based compensation plans, which can be a significant factor in the decision to apply the qualitative screen. Determining fair value using a DCF analysis requires the exercise of significant judgment with respect to several items, including the amount and timing of expected future cash flows and appropriate discount rates. The expected cash flows used in the DCF analyses are based on the Company's most recent forecast and budget and, for years beyond the budget, the Company's estimates, which are based, in part, on forecasted growth rates. The discount rates used in the DCF analyses are intended to reflect the risks inherent in the expected future cash flows of the respective reporting units. Assumptions used in the DCF analyses, including the discount rate, are assessed based on each reporting unit's current results and forecasted future performance, as well as macroeconomic and industry specific factors. The discount rates used in determining the fair value of the Company's reporting units ranged from 10% to 17.5% in 2016 and 12% to 22% in 2015. Determining fair value using a market approach considers multiples of financial metrics based on both acquisitions and trading multiples of a selected peer group of companies. From the comparable companies, a representative market multiple is determined which is applied to financial metrics to estimate the fair value of a reporting unit. To determine a peer group of companies for our respective reporting units, we considered companies relevant in terms of consumer use, monetization model, margin and growth characteristics, and brand strength operating in their respective sectors. While a primary driver in the determination of the fair values of the Company's reporting units is the estimate of future revenue and profitability, the determination of fair value is based, in part, upon the Company's assessment of macroeconomic factors, industry and competitive dynamics and the strategies of its businesses in response to these factors.

At October 1, 2016, the fair value of each of the Company's reporting units with goodwill exceeded its carrying value by more than 20%.

While the Company has the option to qualitatively assess whether it is more likely than not that the fair value of its indefinite-lived intangible asset are less than its carrying value, the Company's policy is to determine the fair value of each of its indefinite-lived intangible assets annually as of October 1. The Company determines the fair values of its indefinite-lived intangible assets using avoided royalty DCF analyses. Significant judgments inherent in these analyses include the selection of appropriate royalty and discount rates and estimating the amount and timing of expected future cash flows. The discount rates used in the DCF analyses reflect the risks inherent in the expected future cash flows generated by the respective intangible assets. The royalty rates used in the DCF analyses are based upon an estimate of the royalty rates that a market participant would pay to license the Company's trade names and trademarks. Assumptions used in the avoided royalty DCF analyses, including the discount rate and royalty rate, are assessed annually based on the actual and projected cash flows related to the asset, as well as macroeconomic and industry specific factors. The discount rates used in the Company's annual indefinite-lived impairment assessment ranged from 11% to 16% in both 2016 and 2015, and the royalty rates used ranged from 2% to 7% in 2016 and 1% to 9% in 2015.

While the 2016 annual assessment did not identify any material impairments, during the second quarter of 2016 the Company recorded impairment charges related to the entire $275.4 million balance of the Publishing reporting unit goodwill and $11.6 million related to certain Publishing indefinite-lived intangible assets. The goodwill impairment charge at Publishing was driven by the impact from the new Google contract, traffic trends and monetization challenges and the corresponding impact on the current estimate of fair value. The expected cash flows used in the Publishing DCF analysis were based on the Company's most recent forecast for the second half of 2016 and each of the years in the forecast period, which were updated to include the effects of the new Google contract, traffic trends and monetization challenges and the cost savings from our restructuring efforts. For years beyond the forecast period, the Company's estimated cash flows were based on forecasted growth rates. The discount rate used in the DCF analysis reflected the risks inherent in the expected future cash flows of the Publishing reporting unit. Determining fair value using a market approach considers multiples of financial metrics based on both acquisitions and trading multiples of a selected peer group of companies. From the comparable companies, a representative market multiple was determined which was applied to financial metrics to estimate the fair value of the Publishing reporting unit. To determine a peer group of companies for Publishing, we considered companies relevant in terms of business model, revenue profile, margin and growth characteristics and brand strength. The indefinite-lived intangible asset impairment charge related to certain trade names and trademarks and were due to reduced level of revenue and profits, which, in turn, also led to a reduction in the assumed royalty rates for these assets. The royalty rates used to value the trade names that were impaired ranged from 2% to 6% and the discount rate that was used reflected the risks inherent in the expected future cash flows of the trade names and trademarks. The impairment charge is included in "Amortization of intangibles" in the accompanying consolidated statement of operations.

In 2015, the Company identified and recorded impairment charges of $88.0 million related to certain indefinite-lived intangible assets at the Publishing segment and $14.1 million at the Other segment related to goodwill at ShoeBuy. The indefinite-lived intangible asset impairment charge at Publishing related to certain trade names of certain Ask & Other direct marketing brands, including Ask.com. The impairment charge reflected the impact of Google ecosystem changes that have impacted our ability to market, the effect of the reduced revenue share on mobile under the terms of the services agreement with Google, and the shift in focus to higher margin businesses in Publishing's Premium Brands. The combined impact of these factors has reduced the forecasted revenue and profits for these brands and the impairment charge reflected the resultant reduction in fair value. The goodwill impairment charge at ShoeBuy was due to increased investment and the seasonal effect of high inventory levels as of October 1, 2015. The 2014 annual assessment identified no material impairments.

The Company's reporting units are consistent with its determination of its operating segments. Goodwill is tested for impairment at the reporting unit level. See "Note 14—Segment Information" for additional information regarding the Company's method of determining operating and reportable segments.

Long-Lived Assets and Intangible Assets with Definite Lives

Long-lived assets, which consist of property and equipment and intangible assets with definite lives, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying value of an asset may not be recoverable. The carrying value of a long-lived asset is not recoverable if it exceeds the sum of the undiscounted cash flows expected to result from the use and eventual disposition of the asset. If the carrying value is deemed not to be recoverable, an impairment loss is recorded equal to the amount by which the carrying value of the long-lived asset exceeds its fair value. Amortization of definite-lived intangible assets is computed either on a straight-line basis or based on the pattern in which the economic benefits of the asset will be realized.

Fair Value Measurements

The Company categorizes its financial instruments measured at fair value into a fair value hierarchy that prioritizes the inputs used in pricing the asset or liability. The three levels of the fair value hierarchy are:


•	Level 1: Observable inputs obtained from independent sources, such as quoted prices for identical assets and liabilities in active markets.

•

Level 2: Other inputs, which are observable directly or indirectly, such as quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active and inputs that are derived principally from or corroborated by observable market data. The fair values of the Company's Level 2 financial assets are primarily obtained from observable market prices for identical underlying securities that may not be actively traded. Certain of these securities may have different market prices from multiple market data sources, in which case an average market price is used.

•

Level 3: Unobservable inputs for which there is little or no market data and require the Company to develop its own assumptions, based on the best information available in the circumstances, about the assumptions market participants would use in pricing the assets or liabilities. See "Note 8—Fair Value Measurements and Financial Instruments" for a discussion of fair value measurements made using Level 3 inputs.

The Company's non-financial assets, such as goodwill, intangible assets and property and equipment, as well as equity and cost method investments, are adjusted to fair value only when an impairment charge is recognized. Such fair value measurements are based predominantly on Level 3 inputs.

Traffic Acquisition Costs

Traffic acquisition costs consist of (i) payments made to partners who distribute our Partnerships customized browser-based applications and who integrate our paid listings into their websites and (ii) fees related to the distribution and facilitation of in-app purchase of product features. These payments include amounts based on revenue share and other arrangements. The Company expenses these payments in the period incurred as a component of cost of revenue.

Advertising Costs

Advertising costs are expensed in the period incurred (when the advertisement first runs for production costs that are initially capitalized) and represent online marketing, including fees paid to search engines and third parties that distribute our Consumer downloadable applications, offline marketing, which is primarily television advertising, and partner-related payments to those who direct traffic to the Match Group brands. Advertising expense is $1.0 billion, $1.2 billion and $994.7 million for the years ended December 31, 2016, 2015 and 2014, respectively.

The Company capitalizes and amortizes the costs associated with certain distribution arrangements that require it to pay a fee per access point delivered. These access points are generally in the form of downloadable applications associated with our Consumer operations. These fees are amortized over the estimated useful lives of the access points to the extent the Company can reasonably estimate a probable future economic benefit and the period over which such benefit will be realized (generally 18 months). Otherwise, the fees are charged to expense as incurred.

Legal Costs

Legal costs are expensed as incurred.

Income Taxes

The Company accounts for income taxes under the liability method, and deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying values of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates in effect for the year in which those temporary differences are expected to be recovered or settled. A valuation allowance is provided on deferred tax assets if it is determined that it is more likely than not that the deferred tax asset will not be realized. The Company records interest, net of any applicable related income tax benefit, on potential income tax contingencies as a component of income tax expense.

The Company recognizes liabilities for uncertain tax positions based on a two-step process. The first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates it is more likely than not that the position will be sustained on audit, including resolution of related appeals or litigation processes, if any. The second step is to measure the tax benefit as the largest amount which is more than 50% likely of being realized upon ultimate settlement.

Earnings Per Share

Basic earnings per share is computed by dividing net earnings attributable to IAC shareholders by the weighted average number of common shares outstanding during the period. Diluted earnings per share reflects the potential dilution that could occur if stock options and other commitments to issue common stock were exercised or equity awards vested resulting in the issuance of common stock that could share in the earnings of the Company.

Foreign Currency Translation and Transaction Gains and Losses

The financial position and operating results of foreign entities whose primary economic environment is based on their local currency are consolidated using the local currency as the functional currency. These local currency assets and liabilities are translated at the rates of exchange as of the balance sheet date, and local currency revenue and expenses of these operations are translated at average rates of exchange during the period. Translation gains and losses are included in accumulated other comprehensive income as a component of shareholders' equity. Transaction gains and losses resulting from assets and liabilities denominated in a currency other than the functional currency are included in the consolidated statement of operations as a component of other income (expense), net. See "Note 20—Consolidated Financial Statement Details" for additional information regarding foreign currency exchange gains and losses.

Translation gains and losses relating to foreign entities that are liquidated or substantially liquidated are reclassified out of accumulated other comprehensive income (loss) into earnings. Such gains totaled $2.2 million during the year ended December 31, 2015 and is included in "Other income (expense), net" in the accompanying consolidated statement of operations.

Stock-Based Compensation

Stock-based compensation is measured at the grant date based on the fair value of the award and is generally expensed over the requisite service period. See "Note 13—Stock-based Compensation" for a discussion of the Company's stock-based compensation plans.

Redeemable Noncontrolling Interests

Noncontrolling interests in the consolidated subsidiaries of the Company are ordinarily reported on the consolidated balance sheet within shareholders' equity, separately from the Company's equity. However, securities that are redeemable at the option of the holder and not solely within the control of the issuer must be classified outside of shareholders' equity. Accordingly, all noncontrolling interests that are redeemable at the option of the holder are presented outside of shareholders' equity in the accompanying consolidated balance sheet.

In connection with the acquisition of certain subsidiaries, management of these businesses has retained an ownership interest. The Company is party to fair value put and call arrangements with respect to these interests. These put and call arrangements allow management of these businesses to require the Company to purchase their interests or allow the Company to acquire such interests at fair value, respectively. The put arrangements do not meet the definition of a derivative instrument as the put agreements do not provide for net settlement. These put and call arrangements become exercisable by the Company and the counter-party at various dates in the future. During the years ended December 31, 2016 and 2015, one and two of these arrangements, respectively, were exercised. No put or call arrangements were exercised during 2014. These put arrangements are exercisable by the counter-party outside the control of the Company. Accordingly, to the extent that the fair value of these interests exceeds the value determined by normal noncontrolling interest accounting, the value of such interests is adjusted to fair value with a corresponding adjustment to additional paid-in capital. During the years ended December 31, 2016, 2015 and 2014, the Company recorded adjustments of $7.9 million, $23.2 million and $27.8 million, respectively, to increase these interests to fair value. Fair value determinations require high levels of judgment and are based on various valuation techniques, including market comparables and discounted cash flow projections.

Noncontrolling Interests

During the quarter ended March 31, 2016, the Company reallocated amounts within the accounts comprising shareholders' equity to correct the amount of noncontrolling interests that was initially recorded following the IPO of Match Group, which occurred on November 24, 2015. The noncontrolling interests should have been recorded using the net book value of Match Group rather than the net IPO proceeds. In addition, the adjustment allocates the proportionate share of the accumulated other comprehensive loss to the noncontrolling interests balance. The reallocation has no effect on net income or earnings per share. Based on our assessment of both qualitative and quantitative factors, the reallocation was not considered material to the consolidated financial statements of the Company as of and for the year ended December 31, 2016, or any of the interim reporting periods included therein, and for the year ended December 31, 2015. Therefore, the adjustment was initially reflected in the consolidated financial statements of the Company as of and for the three months ended March 31, 2016, and was also reflected in the year-to-date consolidated financial statements of each subsequent interim period in 2016 and in the accompanying consolidated financial statements for the year ending December 31, 2016.

Recent Accounting Pronouncements

Accounting Pronouncements not yet adopted by the Company

In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers, which clarifies the principles for recognizing revenue and develops a common standard for all industries. In August 2015, the FASB issued ASU No. 2015-14, which defers the effective date of ASU 2014-09 for all entities by one year. In March, April, May and December 2016, the FASB issued ASU No. 2016-08, ASU No. 2016-10, ASU No. 2016-12 and ASU No. 2016-20, respectively, which provide further revenue recognition guidance related to principal versus agent considerations, performance obligations and licensing, and narrow-scope improvements and practical expedients. Early adoption is permitted beginning on the original effective date of December 15, 2016. Upon adoption, ASU No. 2014-09 may either be applied retrospectively to each prior period presented or using the modified retrospective approach with the cumulative effect recognized as of the date of initial application. The Company will adopt ASU No. 2014-09, as amended by ASU No. 2016-08, ASU No. 2016-10, ASU No. 2016-12 and ASU No. 2016-20, using the modified retrospective approach effective January 1, 2018. The Company is currently evaluating the impact the adoption of these standard updates will have on its consolidated financial statements.

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842), which supersedes existing guidance on accounting for leases in "Leases (Topic 840)" and generally requires all leases to be recognized in the statement of financial position. The provisions of ASU No. 2016-02 are effective for reporting periods beginning after December 15, 2018; early adoption is permitted. The provisions of ASU No. 2016-02 are to be applied using a modified retrospective approach. The Company is currently evaluating the impact the adoption of this standard update will have on its consolidated financial statements.

In March 2016, the FASB issued ASU No. 2016-09, Improvements to Employee Share-Based Payments Accounting (Topic 718). The update is intended to simplify existing guidance on various aspects of the accounting and presentation of employee share-based payments in financial statements including the accounting for income taxes, forfeitures and statutory tax withholding requirements, as well as classification on the statement of cash flows. The provisions of ASU No. 2016-09 are effective for reporting periods beginning after December 15, 2016; early adoption is permitted.

The primary effects of the adoption of ASU No. 2016-09 on the Company’s results of operations, cash flows and earnings per share will be due to the change in the treatment of the excess tax benefit (deficiency) related to equity awards to employees upon exercise of stock options and the vesting of restricted stock units. The table below illustrates this effect.



Excess tax benefit (deficiency) of equity awards to employees upon exercise of stock options and the vesting of restricted stock units:	Accounting under current GAAP:	Accounting following adoption of ASU No. 2016-09:
Statement of operations	Treated as an increase (or decrease) to additional paid-in capital when realized (i.e., reduction of income taxes payable)	Included in the determination of the income tax provision or benefit upon option exercise or share vesting
Statement of cash flows	Treated as a financing cash flow	Treated as an operating cash flow
Calculation of fully diluted shares for the determination of earnings per share	Included as a component of the assumed proceeds in applying the treasury stock method	Excluded from the assumed proceeds in applying the treasury stock method

The expected effect of the adoption of ASU No. 2016-09 for the Company will be to increase reported net earnings (or reduce reported net loss), operating cash flow and basic earnings per share (or reduce reported net loss per share). The number of shares used in the calculation of fully diluted earnings per share will also increase due to the reduction in assumed proceeds under the treasury stock method. The actual effect on fully diluted earnings per share could be an increase or a decrease in any period, which will depend upon the increase in reported earnings and the increase in the number of shares included in the fully diluted earnings per share calculation.

As of January 1, 2017, the Company will adopt the change in treatment of excess tax benefit (deficiency) using the modified retrospective approach with the cumulative effect recognized as of the date of initial adoption and will apply the provisions of ASU No. 2016-09 related to the presentation on the statement of cash flows using the retrospective approach.

To illustrate the effect of ASU No. 2016-09 on the Company’s results for the year ended December 31, 2016, the table below illustrates the change in the Company’s reported results after giving pro forma effect to ASU No. 2016-09 as if it had been in effect on January 1, 2016.



	Reported results under current GAAP			Pro forma results assuming ASU No. 2016-09 had been in effect on January 1, 2016
	(In thousands, except per share data)
Net (loss) earnings	$	(16,151	)	$	33,255
Net earnings attributable to noncontrolling interests	(25,129		)	(30,024		)
Net (loss) earnings attributable to IAC shareholders	(41,280		)	3,231
Cash flows provided by operating activities attributable to continuing operations	292,377			344,141
Cash flows used in financing activities attributable to continuing operations	(451,065		)	(502,829		)
Basic (loss) earnings per share from continuing operations	$	(0.52	)	$	0.10
Fully diluted loss per share from continuing operations	$	(0.52	)	$	(0.19	)

In August 2016, the FASB ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments, which makes clarifications to how cash receipts and cash payments in certain transactions are presented and classified on the statement of cash flows. The provisions of ASU No. 2016-15 are effective for reporting periods beginning after December 15, 2017, including interim periods, and will require adoption on a retrospective basis unless it is impracticable to apply, in which case we would be required to apply the amendments prospectively as of the earliest date practicable; early adoption is permitted. The Company does not expect the adoption of this standard update to have a material impact on its consolidated financial statements and is currently evaluating the method and timing of adoption.

In January 2017, the FASB issued ASU No. 2017-04, Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment, which is intended to simplify the accounting for goodwill impairment. The guidance will eliminate the requirement to calculate the implied fair value of goodwill under today’s two-step impairment test to measure a goodwill impairment charge. The provisions of ASU No. 2017-04 are effective for reporting periods beginning after December 15, 2019; early adoption is permitted. The provisions of ASU 2017-04 are to be applied using a prospective approach. The Company will adopt the provisions of ASU 2017-04 on January 1, 2017 and does not expect the adoption of this standard update to have a material impact on its consolidated financial statements.

Accounting Pronouncement adopted by the Company

In April 2015, the FASB issued ASU No. 2015-03, Interest-Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs, and in August 2015, the FASB issued ASU No. 2015-15, Interest-Imputation of Interest (Subtopic 835-30): Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements. Together, this guidance requires that deferred debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of the associated debt liability, consistent with debt discounts and premiums, while debt issuance costs related to line-of-credit arrangements may still continue to be classified as assets. The Company adopted the provisions of ASU No. 2015-03 and ASU No. 2015-15 in the first quarter of 2016 and applied the provisions retrospectively, resulting in $21.3 million of deferred debt issuance costs being reclassified from other non-current assets to long-term debt, net of current portion, in the accompanying December 31, 2015 consolidated balance sheet.

Reclassifications

Certain prior year amounts have been reclassified to conform to the current year presentation.

INCOME TAXES

12 Months Ended

Dec. 31, 2016

Income Tax Disclosure [Abstract]

INCOME TAXES

U.S. and foreign (loss) earnings from continuing operations before income taxes are as follows:



	Years Ended December 31,
	2016			2015		2014
	(In thousands)
U.S.	$	(248,622	)	$	79,639	$	174,792
Foreign	167,348			63,234		95,137
Total	$	(81,274	)	$	142,873	$	269,929

The components of the (benefit) provision for income taxes attributable to continuing operations are as follows:



	Years Ended December 31,
	2016			2015			2014
	(In thousands)
Current income tax provision (benefit):
Federal	$	23,343		$	67,505		$	(45,842	)
State	3,662			7,785			(14,787		)
Foreign	27,242			14,012			19,132
Current income tax provision (benefit)	54,247			89,302			(41,497		)
Deferred income tax (benefit) provision:
Federal	(100,798		)	(50,254		)	74,255
State	(9,518		)	(3,727		)	3,090
Foreign	(8,865		)	(5,805		)	(476		)
Deferred income tax (benefit) provision	(119,181		)	(59,786		)	76,869
Income tax (benefit) provision	$	(64,934	)	$	29,516		$	35,372

The current income tax payable was reduced by $51.8 million, $56.4 million and $45.0 million for the years ended December 31, 2016, 2015 and 2014, respectively, for excess tax deductions attributable to stock-based compensation. The related income tax benefits are recorded as increases to additional paid-in capital.

Income taxes receivable (payable) and deferred tax assets (liabilities) are included in the following captions in the accompanying consolidated balance sheet at December 31, 2016 and 2015:



	December 31,
	2016			2015
	(In thousands)
Income taxes receivable (payable):
Other current assets	$	41,352		$	26,793
Other non-current assets	1,615			1,564
Accrued expenses and other current liabilities	(5,788		)	(33,029		)
Income taxes payable	(33,528		)	(33,692		)
Net income taxes receivable (payable)	$	3,651		$	(38,364	)

Deferred tax assets (liabilities):
Other non-current assets	$	2,511		$	1,970
Deferred income taxes	(228,798		)	(348,773		)
Net deferred tax liabilities	$	(226,287	)	$	(346,803	)

The tax effects of cumulative temporary differences that give rise to significant deferred tax assets and deferred tax liabilities are presented below. The valuation allowance relates to deferred tax assets for which it is more likely than not that the tax benefit will not be realized.



	December 31,
	2016			2015
	(In thousands)
Deferred tax assets:
Accrued expenses	$	40,273		$	36,418
Net operating loss carryforwards	63,948			68,048
Tax credit carryforwards	11,570			13,753
Stock-based compensation	87,914			76,285
Cost method investments	9,955			6,251
Equity method investments	17,455			17,105
Intangible and other assets	13,708			—
Other	20,089			16,057
Total deferred tax assets	264,912			233,917
Less valuation allowance	(88,170		)	(90,482		)
Net deferred tax assets	176,742			143,435
Deferred tax liabilities:
Investment in subsidiaries	(385,474		)	(382,254		)
Intangible and other assets	—			(88,846		)
Other	(17,555		)	(19,138		)
Total deferred tax liabilities	(403,029		)	(490,238		)
Net deferred tax liabilities	$	(226,287	)	$	(346,803	)

At December 31, 2016, the Company has federal and state net operating losses ("NOLs") of $71.8 million and $123.5 million, respectively. If not utilized, the federal NOLs will primarily expire at various times between 2030 and 2036, and the state NOLs will expire at various times between 2017 and 2036. Utilization of federal and state NOLs will be subject to limitations under Section 382 of the Internal Revenue Code and applicable state law. At December 31, 2016, the Company has foreign NOLs of $126.3 million available to offset future income. Of these foreign NOLs, $112.4 million can be carried forward indefinitely and $13.9 million will expire at various times between 2017 and 2036. During 2016, the Company recognized tax benefits related to NOLs of $19.8 million. At December 31, 2016, the Company has federal and state capital losses of $16.5 million and $26.2 million, respectively. If not utilized, the capital losses will expire between 2017 and 2021. Utilization of capital losses will be limited to the Company's ability to generate future capital gains.

At December 31, 2016, the Company has tax credit carryforwards of $18.3 million. Of this amount, $9.1 million relates to state tax credits for research activities, $3.9 million relates to federal credits for foreign taxes, and $5.3 million relates to various state and local tax credits. Of these credit carryforwards, $11.0 million can be carried forward indefinitely and $7.3 million will expire primarily by 2018.

During 2016, the Company's valuation allowance decreased by $2.3 million primarily due to the decrease in state and foreign net operating losses and foreign tax credits, partially offset by an increase in federal and state capital losses and other-than-temporary impairment charges on certain cost method investments. At December 31, 2016, the Company has a valuation allowance of $88.2 million related to the portion of tax loss carryforwards and other items for which it is more likely than not that the tax benefit will not be realized.

A reconciliation of the income tax (benefit) provision to the amounts computed by applying the statutory federal income tax rate to earnings from continuing operations before income taxes is shown as follows:



	Years Ended December 31,
	2016			2015			2014
	(In thousands)
Income tax (benefit) provision at the federal statutory rate of 35%	$	(28,446	)	$	50,006		$	94,475
Change in tax reserves, net	(828		)	(2,928		)	(86,151		)
Foreign income taxed at a different statutory tax rate	(20,277		)	(6,077		)	(10,456		)
State income taxes, net of effect of federal tax benefit	(3,880		)	2,208			7,240
Realization of certain deferred tax assets	—			(22,440		)	—
Non-taxable contingent consideration fair value adjustments	1,020			(4,517		)	(4,439		)
Non-taxable foreign currency exchange gains	(6,837		)	(4,306		)	—
Unbenefited losses	1,730			4,264			5,433
Non-deductible goodwill associated with the sale of Urbanspoon	—			—			6,982
Non-taxable sale and non-deductible goodwill associated with ShoeBuy	(13,142		)	4,920			—
Goodwill impairment of Publishing	10,649			—			—
Non-deductible impairments for certain cost method investments	3,489			2,341			23,310
Deferred tax adjustment for enacted changes in tax laws and rates	(4,594		)	—			—
Other, net	(3,818		)	6,045			(1,022		)
Income tax (benefit) provision	$	(64,934	)	$	29,516		$	35,372

No income taxes have been provided on indefinitely reinvested earnings of certain foreign subsidiaries aggregating $680.2 million at December 31, 2016. The estimated amount of the unrecognized deferred income tax liability with respect to such earnings would be $169.3 million.

A reconciliation of the beginning and ending amount of unrecognized tax benefits, including penalties but excluding interest, is as follows:



	December 31,
	2016			2015			2014
	(In thousands)
Balance at January 1	$	40,808		$	30,386		$	275,813
Additions based on tax positions related to the current year	2,033			4,227			2,159
Additions for tax positions of prior years	2,676			14,467			1,622
Reductions for tax positions of prior years	(743		)	(1,556		)	(5,611		)
Settlements	(5,107		)	—			(5,092		)
Expiration of applicable statutes of limitations	(1,295		)	(6,716		)	(238,505		)
Balance at December 31	$	38,372		$	40,808		$	30,386

The Company recognizes interest and, if applicable, penalties related to unrecognized tax benefits in the income tax provision. Included in the income tax provision for continuing operations for the years ended December 31, 2016, 2015 and 2014 is a $0.4 million expense, $0.1 million expense and $58.5 million benefit, respectively, net of related deferred taxes of $0.2 million, less than $0.1 million and $35.3 million, respectively, for interest on unrecognized tax benefits. Included in the income tax provision for discontinued operations for the years ended December 31, 2016, 2015 and 2014 is a less than $0.1 million benefit, less than $0.1 million benefit and $19.7 million benefit, respectively, net of related deferred taxes of less than $0.1 million, less than $0.1 million and $11.7 million, respectively, for interest on unrecognized tax benefits. At December 31, 2016 and 2015, the Company has accrued $2.6 million and $2.5 million, respectively, for the payment of interest. At December 31, 2016 and 2015, the Company has accrued $1.7 million and $2.2 million, respectively, for penalties.

The Company is routinely under audit by federal, state, local and foreign authorities in the area of income tax. These audits include questioning the timing and the amount of income and deductions and the allocation of income and deductions among various tax jurisdictions. The Internal Revenue Service is currently auditing the Company’s federal income tax returns for the years ended December 31, 2010 through 2012. The statute of limitations for the years 2010 through 2012 has been extended to December 31, 2017. Various other jurisdictions are open to examination for tax years beginning with 2009. Income taxes payable include reserves considered sufficient to pay assessments that may result from examination of prior year tax returns. Changes to reserves from period to period and differences between amounts paid, if any, upon resolution of audits and amounts previously provided may be material. Differences between the reserves for income tax contingencies and the amounts owed by the Company are recorded in the period they become known.

At December 31, 2016 and 2015, unrecognized tax benefits, including interest, were $41.0 million and $43.4 million, respectively. If unrecognized tax benefits at December 31, 2016 are subsequently recognized, $37.7 million, net of related deferred tax assets and interest, would reduce income tax expense for continuing operations. The comparable amount as of December 31, 2015 was $41.0 million. The Company believes that it is reasonably possible that its unrecognized tax benefits could decrease by $6.9 million by December 31, 2017, due to settlements and expirations of statutes of limitations; all of which would reduce the income tax provision for continuing operations.

BUSINESS COMBINATION

12 Months Ended

Dec. 31, 2016

Business Combinations [Abstract]

BUSINESS COMBINATION

On October 28, 2015, Match Group completed the purchase of all the outstanding shares of Plentyoffish Media Inc. ("PlentyOfFish"), a leading provider of subscription-based and ad-supported online personals servicing North America, Europe, Latin America and Australia. Services are provided through websites and mobile applications that PlentyOfFish owns and operates. The purchase price was $574.1 million in cash and is net of a $0.9 million working capital adjustment paid to Match Group in the second quarter of 2016.

The financial results of PlentyOfFish are included in the Company's consolidated financial statements, within the Match Group segment, beginning October 28, 2015. For the year ended December 31, 2015, the Company included $8.0 million of revenue and $0.7 million of net earnings in its consolidated statement of operations related to PlentyOfFish.

The table below summarizes the fair values of the assets acquired and liabilities assumed at the date of acquisition:



	(In thousands)
Cash and cash equivalents	$	4,626
Other current assets	4,460
Computer and other equipment	2,990
Goodwill	488,644
Intangible assets	84,100
Other non-current assets	1,073
Total assets	585,893
Current liabilities	(6,418		)
Other long-term liabilities	(5,325		)
Net assets acquired	$	574,150

The purchase price was based on the expected financial performance of PlentyOfFish, not on the value of the net identifiable assets at the time of acquisition, which resulted in a significant portion of the purchase price being attributed to goodwill. The expected financial performance of PlentyOfFish reflects that it is complementary and synergistic to the existing Match Group dating businesses.

Intangible assets are as follows:



	(In thousands)		Weighted-Average Useful Life (Years)
Indefinite-lived trade name	$	66,300	Indefinite
Customer relationships	10,100		Less than 1
New registrants	3,100		Less than 1
Non-compete agreement	3,000		5
Developed technology	1,600		2
Total intangible assets acquired	$	84,100

PlentyOfFish's other current assets, property and equipment, other non-current assets, current liabilities and other long-term liabilities were reviewed and adjusted to their fair values at the date of acquisition, as necessary. The fair values of trade names, customer relationships and the non-compete agreement were determined using variations of the income approach; specifically, in respective order, the relief from royalty, excess earnings and with or without methodologies. The fair values of new registrants and developed technology were determined using a cost approach that utilized the cost to replace methodology. The valuations of the intangible assets incorporate significant unobservable inputs and require significant judgment and estimates, including the amount and timing of future cash flows and the determination of royalty and discount rates. The amount attributed to goodwill is not tax deductible.

Pro forma Financial Information

The unaudited pro forma financial information in the table below presents the combined results of the Company and PlentyOfFish as if the acquisition of PlentyOfFish had occurred on January 1, 2014. The pro forma financial information includes adjustments required under the acquisition method of accounting and is presented for informational purposes only and is not necessarily indicative of the results that would have been achieved had the acquisition actually occurred on January 1, 2014. For the years ended December 31, 2015 and 2014, pro forma adjustments reflected below include increases of $1.4 million and $14.6 million, respectively, in amortization of intangible assets. The pro forma adjustments reflected below for the year ended December 31, 2014 also include a reduction in revenue of $5.1 million due to the write-off of deferred revenue at the date of acquisition.



	Years Ended December 31,
	2015		2014
	(In thousands, except per share data)
Revenue	$	3,309,287	$	3,157,893
Net earnings attributable to IAC shareholders	$	155,599	$	413,299
Basic earnings per share attributable to IAC shareholders	$	1.88	$	4.96
Diluted earnings per share attributable to IAC shareholders	$	1.76	$	4.67

- Definition

The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1497-128463

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1490-128463

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e7008-128479

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1486-128463

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1524-128463

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e7000-128479

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4922-128472

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4934-128472

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4926-128472

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 4A
-URI http://asc.fasb.org/extlink&oid=73530397&loc=SL65897772-128472

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1383-128463

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6996-128479

+ Details

GOODWILL AND INTANGIBLE ASSETS

12 Months Ended

Dec. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

GOODWILL AND INTANGIBLE ASSETS

Goodwill and intangible assets, net are as follows:



	December 31,
	2016		2015
	(In thousands)
Goodwill	$	1,924,052	$	2,245,364
Intangible assets with indefinite lives	320,645		380,137
Intangible assets with definite lives, net	34,806		60,691
Total goodwill and intangible assets, net	$	2,279,503	$	2,686,192

The following table presents the balance of goodwill by reportable segment, including the changes in the carrying value of goodwill, for the year ended December 31, 2016:



	Balance at December 31, 2015		Additions		(Deductions)			Impairment			Foreign Exchange Translation			Balance at December 31, 2016
	(In thousands)
Match Group	$	1,293,109	$	603	$	(3,063	)	$	—		$	(9,689	)	$	1,280,960
HomeAdvisor	150,251		21,985		—			—			(1,625		)	170,611
Video	15,590		9,649		—			—			—			25,239
Applications	447,242		—		—			—			—			447,242
Publishing	277,192		—		(1,968		)	(275,367		)	143			—
Other	61,980		—		(62,780		)	—			800			—
Total	$	2,245,364	$	32,237	$	(67,811	)	$	(275,367	)	$	(10,371	)	$	1,924,052

The December 31, 2016 goodwill balance reflects accumulated impairment losses of $598.0 million, $529.1 million and $11.6 million at Publishing, Applications and Connected Ventures (included in the Video segment), respectively.

The additions primarily relate to the acquisitions of MyHammer Holding AG (included in the HomeAdvisor segment) and VHX (included in the Video segment). The deductions primarily relate to the sales of PriceRunner and ShoeBuy (both included in the Other segment). See "Note 2—Summary of Significant Accounting Policies" for information on the 2016 impairment charge at Publishing.

The following table presents the balance of goodwill by reportable segment, including the changes in the carrying value of goodwill, for the year ended December 31, 2015:



	Balance at December 31, 2014		Additions		Impairment			Foreign Exchange Translation			Allocation of IAC's former Search & Applications Segment Goodwill Based on Relative Fair Value			Balance at December 31, 2015
	(In thousands)
Search & Applications ^(a)	$	774,822	$	1,450	$	—		$	(1,230	)	$	(775,042	)	$	—

Match Group	791,474		547,910		—			(46,275		)	—			1,293,109
HomeAdvisor	151,321		—		—			(1,070		)	—			150,251
Video	15,590		—		—			—			—			15,590
Applications	—		—		—			—			447,242			447,242
Publishing	—		3,504		—			963			272,725			277,192
Other	21,719		—		(14,056		)	(758		)	55,075			61,980
Total	$	1,754,926	$	552,864	$	(14,056	)	$	(48,370	)	$	—		$	2,245,364

________________________

(a)

Prior to the fourth quarter of 2015, Search & Applications was a reportable segment consisting of one operating segment and one reporting unit. In the fourth quarter of 2015, Search &Applications was split into three new operating segments and reporting units: Applications, Publishing and PriceRunner (included in the Other segment). The goodwill of Search & Applications was allocated to these three reporting units based upon their relative fair values as of October 1, 2015. It was not possible to reflect this allocation on a retrospective basis because of acquisitions and dispositions during the three years in the period ended December 31, 2015.

The additions primarily relate to Match Group's acquisitions of PlentyOfFish and Eureka. See "Note 2—Summary of Significant Accounting Policies" for information on the 2015 impairment charge at ShoeBuy.

The December 31, 2015 goodwill balance includes accumulated impairment losses of $529.1 million, $322.6 million and $65.2 million, which were re-allocated from the former Search & Applications segment, to Applications, Publishing and PriceRunner, respectively, based on their relative fair values as of October 1, 2015 following the change in reportable segments that occurred during the fourth quarter of 2015. The goodwill balance at December 31, 2015 also includes accumulated impairment losses of $42.1 million and $11.6 million at ShoeBuy (included in the Other segment) and Connected Ventures (included in the Video segment), respectively.

Intangible assets with indefinite lives are trade names and trademarks acquired in various acquisitions. During the second quarter of 2016, the Company changed the classification of certain intangibles from indefinite-lived to definite-lived at Publishing. At December 31, 2016 and 2015, intangible assets with definite lives are as follows:



	December 31, 2016
	Gross Carrying Amount		Accumulated Amortization			Net		Weighted-Average Useful Life (Years)
	(In thousands)
Trade names	$	63,855	$	(52,927	)	$	10,928	1.8
Technology	38,602		(27,667		)	10,935		3.4
Content	14,802		(8,965		)	5,837		4.3
Customer lists	12,485		(9,997		)	2,488		3.7
Advertiser and supplier relationships and other	7,230		(2,612		)	4,618		4.5
Total	$	136,974	$	(102,168	)	$	34,806	2.8



	December 31, 2015
	Gross Carrying Amount		Accumulated Amortization			Net		Weighted-Average Useful Life (Years)
	(In thousands)
Trade names	$	32,123	$	(26,268	)	$	5,855	2.5
Technology	55,487		(37,012		)	18,475		3.2
Content	62,082		(48,937		)	13,145		4.1
Customer lists	28,836		(13,078		)	15,758		2.1
Advertiser and supplier relationships and other	15,709		(8,251		)	7,458		4.2
Total	$	194,237	$	(133,546	)	$	60,691	3.3

At December 31, 2016, amortization of intangible assets with definite lives for each of the next five years is estimated to be as follows:



Years Ending December 31,	(In thousands)
2017	$	23,815
2018	6,922
2019	2,866
2020	1,203
Total	$	34,806

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

+ References + Details

MARKETABLE SECURITIES

12 Months Ended

Dec. 31, 2016

Marketable Securities [Abstract]

MARKETABLE SECURITIES

At December 31, 2016, current available-for-sale marketable securities are as follows:



	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(In thousands)
Commercial paper	$	49,797	$	—	$	—		$	49,797
Treasury discount notes	34,978		—		(4		)	34,974
Corporate debt securities	4,575		2		(6		)	4,571
Total debt securities	89,350		2		(10		)	89,342
Total marketable securities	$	89,350	$	2	$	(10	)	$	89,342

The contractual maturities of debt securities classified as current available-for-sale at December 31, 2016 are within one year.

The aggregate fair value of available-for-sale marketable debt securities with unrealized losses is $37.0 million as of December 31, 2016. There are no investments in current available-for-sale marketable debt securities that have been in a continuous unrealized loss position for longer than twelve months as of December 31, 2016. The gross unrealized losses on the marketable debt securities relate primarily to changes in interest rates. The Company does not consider the gross unrealized losses to be other-than-temporary because the Company does not intend to sell the marketable debt securities that generated the gross unrealized losses at December 31, 2016, and it is not more likely than not that the Company will be required to sell these securities before recovery of their amortized costs bases, which may be maturity.

At December 31, 2015, current available-for-sale marketable securities are as follows:



	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(In thousands)
Corporate debt securities	$	27,765	$	—	$	(187	)	$	27,578
Equity security	8,659		2,963		—			11,622
Total marketable securities	$	36,424	$	2,963	$	(187	)	$	39,200

The unrealized gains and losses in the tables above are included in "Accumulated other comprehensive loss" in the accompanying consolidated balance sheet. The gross unrealized losses on the marketable debt securities relate primarily to changes in interest rates. The Company does not consider the gross unrealized losses to be other-than-temporary because the Company does not intend to sell the marketable debt securities that generated the gross unrealized losses at December 31, 2015, and it is not more likely than not that the Company will be required to sell these securities before recovery of their amortized costs bases, which may be maturity.

The following table presents the proceeds from maturities and sales of current and non-current available-for-sale marketable securities and the related gross realized gains:



	December 31,
	2016		2015		2014
	(In thousands)
Proceeds from maturities and sales of available-for-sale marketable securities	$	279,485	$	218,976	$	25,223
Gross realized gains	3,556		443		3,362

There were no gross realized losses from the maturities and sales of available-for-sale marketable securities for the years ended December 31, 2016, 2015 and 2014. However, during the second quarter of 2015, the Company recognized $0.3 million in losses that were deemed to be other-than-temporary related to various corporate debt securities that were expected to be sold by the Company, in part, to fund its cash needs related to Match Group's acquisition of PlentyOfFish for $575 million.

Gross realized gains from the maturities and sales of available-for-sale marketable securities and losses that were deemed to be other-than-temporary are included in "Other income (expense), net" in the accompanying consolidated statement of operations.

- Definition

The entire disclosure for investments in certain debt and equity securities.

+ References + Details

LONG-TERM INVESTMENTS

12 Months Ended

Dec. 31, 2016

Long-term Investments [Abstract]

LONG-TERM INVESTMENTS

Long-term investments consist of:



	December 31,
	2016		2015
	(In thousands)
Cost method investments	$	116,133	$	114,532
Equity method investments	6,677		11,262
Marketable equity security	—		7,542
Auction rate security	—		4,050
Total long-term investments	$	122,810	$	137,386

Cost method investments

In 2016, 2015 and 2014, the Company recorded $10.0 million, $4.5 million and $66.6 million, respectively, of other-than-temporary impairment charges for certain cost method investments as a result of our assessment of the near-term prospects and financial condition of the investees. These charges are included in "Other income (expense), net" in the accompanying consolidated statement of operations.

The Company's largest cost method investment, through Match Group, is a 21% interest in the voting common stock of Zhenai Inc. ("Zhenai"), a leading provider of online dating and matchmaking services in China. However, given that our interest relative to other shareholders is not significant, we do not have the ability to exercise significant influence over the operating and financial matters of Zhenai and this investment is accounted for as a cost method investment.

Equity method investments

In 2016 and 2014, the Company recorded other-than-temporary impairment charges on certain of its investments of $0.6 million and $4.2 million, respectively. The other-than-temporary impairment charge recorded in 2014 related to one of its investments following the sale of a majority of the investee's assets. These charges are included in "Other income (expense), net" in the accompanying consolidated statement of operations.

Marketable equity security

The cost basis of the Company's long-term marketable equity security at December 31, 2015 was $5.0 million with a gross unrealized gain of $2.6 million. The gross unrealized gain at December 31, 2015 was included in "Accumulated other comprehensive loss" in the accompanying consolidated balance sheet. During the second quarter of 2016, this marketable equity security was classified as short-term due to the Company's decision to sell this security. During the third quarter of 2016, the security had been sold.

Auction rate security

See "Note 8—Fair Value Measurements and Financial Instruments" for information regarding the auction rate security.

FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS

12 Months Ended

Dec. 31, 2016

Fair Value Disclosures [Abstract]

FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS

The following tables present the Company's financial instruments that are measured at fair value on a recurring basis:



	December 31, 2016
	Quoted Market Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)			Total Fair Value Measurements
	(In thousands)
Assets:
Cash equivalents:
Money market funds	$	667,662	$	—	$	—		$	667,662
Time deposits	—		79,000		—			79,000
Treasury discount notes	24,991		—		—			24,991
Commercial paper	—		123,640		—			123,640
Marketable securities:
Commercial paper	—		49,797		—			49,797
Treasury discount notes	34,974		—		—			34,974
Corporate debt securities	—		4,571		—			4,571
Total	$	727,627	$	257,008	$	—		$	984,635

Liabilities:
Contingent consideration arrangements	$	—	$	—	$	(33,871	)	$	(33,871	)



	December 31, 2015
	Quoted Market Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)			Total Fair Value Measurements
	(In thousands)
Assets:
Cash equivalents:
Money market funds	$	601,848	$	—	$	—		$	601,848
Time deposits	—		125,038		—			125,038
Commercial paper	—		302,418		—			302,418
Marketable securities:
Corporate debt securities	—		27,578		—			27,578
Equity security	11,622		—		—			11,622
Long-term investments:
Auction rate security	—		—		4,050			4,050
Marketable equity security	7,542		—		—			7,542
Total	$	621,012	$	455,034	$	4,050		$	1,080,096

Liabilities:
Contingent consideration arrangements	$	—	$	—	$	(33,873	)	$	(33,873	)

The following table presents the changes in the Company's financial instruments that are measured at fair value on a recurring basis using significant unobservable inputs (Level 3):



	For the Year Ended
	December 31, 2016						December 31, 2015
	Auction Rate Security			Contingent Consideration Arrangements			Auction Rate Security			Contingent Consideration Arrangements
	(In thousands)
Balance at January 1	$	4,050		$	(33,873	)	$	6,070		$	(30,140	)
Total net gains (losses):
Included in earnings:
Fair value adjustments	—			(2,555		)	—			15,461
Foreign currency exchange gains	—			—			—			626
Included in other comprehensive income (loss)	5,950			(1,571		)	(2,020		)	1,872
Fair value at date of acquisition	—			(185		)	—			(27,442		)
Settlements	—			2,180			—			5,750
Proceeds from sale	(10,000		)	—			—			—
Other	—			2,133			—			—
Balance at December 31	$	—		$	(33,871	)	$	4,050		$	(33,873	)

Contingent consideration arrangements

As of December 31, 2016, there are seven contingent consideration arrangements related to business acquisitions. The maximum contingent payments related to these seven arrangements are $132.8 million and the fair value of these arrangements at December 31, 2016 is $33.9 million.

The contingent consideration arrangements are generally based upon earnings performance and/or operating metrics. The Company determines the fair value of the contingent consideration arrangements by using probability-weighted analyses to determine the amounts of the gross liability, and, if the arrangement is long-term in nature, applying a discount rate that appropriately captures the risks associated with the obligation to determine the net amount reflected in the consolidated financial statements. The number of scenarios in the probability-weighted analyses can vary; generally, more scenarios are prepared for longer duration and more complex arrangements. The fair values of the contingent consideration arrangements at December 31, 2016 and 2015 reflect discount rates ranging from 12% to 25%.

The fair values of the contingent consideration arrangements are sensitive to changes in the forecasts of earnings and/or the relevant operating metrics and changes in discount rates. The Company remeasures the fair value of the contingent consideration arrangements each reporting period, including the accretion of the discount, if applicable, and changes are recognized in “General and administrative expense” in the accompanying consolidated statement of operations. The contingent consideration arrangement liability at December 31, 2016 and 2015 includes a current portion of $33.4 million and $2.6 million, respectively, and non-current portion of $0.4 million and $31.2 million, respectively, which are included in “Accrued expenses and other current liabilities” and “Other long-term liabilities,” respectively, in the accompanying consolidated balance sheet.

Financial instruments measured at fair value only for disclosure purposes

The following table presents the carrying value and the fair value of financial instruments measured at fair value only for disclosure purposes:



	December 31, 2016						December 31, 2015
	Carrying Value			Fair Value			Carrying Value			Fair Value
	(In thousands)
Current portion of long-term debt	$	(20,000	)	$	(20,311	)	$	(40,000	)	$	(39,850	)
Long-term debt, net of current portion	(1,582,484		)	(1,657,861		)	(1,726,954		)	(1,761,601		)

The fair value of long-term debt, including the current portion is estimated using market prices or indices for similar liabilities and taking into consideration other factors such as credit quality and maturity, which are Level 3 inputs.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

LONG-TERM DEBT

12 Months Ended

Dec. 31, 2016

Debt Disclosure [Abstract]

LONG-TERM DEBT

Long-term debt consists of:



	December 31,
	2016		2015
	(In thousands)
Match Group Debt:
6.75% Senior Notes due December 15, 2022 (the "2015 Match Group Senior Notes"); interest payable each June 15 and December 15, which commenced on June 15, 2016	$	445,172	$	445,172
6.375% Senior Notes due June 1, 2024 (the "2016 Match Group Senior Notes"); interest payable each June 1 and December 1, which commenced on December 1, 2016	400,000		—
Match Group Term Loan due November 16, 2022 ^(a)	350,000		800,000
Total Match Group long-term debt	1,195,172		1,245,172
Less: Current maturities of Match Group long-term debt	—		40,000
Less: Unamortized original issue discount and original issue premium, net	5,245		11,691
Less: Unamortized debt issuance costs	13,434		16,610
Total Match Group debt, net of current maturities	1,176,493		1,176,871

IAC Debt:
4.875% Senior Notes due November 30, 2018 (the "2013 Senior Notes"); interest payable each May 30 and November 30, which commenced on May 30, 2014	390,214		500,000
4.75% Senior Notes due December 15, 2022 (the "2012 Senior Notes"); interest payable each June 15 and December 15, which commenced on June 15, 2013	38,109		54,732
Total IAC long-term debt	428,323		554,732
Less: Current portion of IAC long-term debt	20,000		—
Less: Unamortized debt issuance costs	2,332		4,649
Total IAC debt, net of current portion	405,991		550,083

Total long-term debt, net of current portion	$	1,582,484	$	1,726,954

________________________


(a)	The Match Group Term Loan matures on November 16, 2022; provided that, if any of the 2015 Match Group Senior Notes remain outstanding on the date that is 91 days prior to the maturity date of the 2015 Match Group Senior Notes, the Match Group Term Loan maturity date shall be the date that is 91 days prior to the maturity date of the 2015 Match Group Senior Notes.

Match Group Senior Notes:

The 2016 Match Group Senior Notes were issued on June 1, 2016. The proceeds of $400 million were used to prepay a portion of indebtedness outstanding under the Match Group Term Loan. At any time prior to June 1, 2019, these notes may be redeemed at a redemption price equal to the sum of the principal amount thereof, plus accrued and unpaid interest and a make-whole premium. Thereafter, these notes may be redeemed at the redemption prices set forth below, together with accrued and unpaid interest thereon to the applicable redemption date, if redeemed during the twelve-month period beginning on June 1 of the years indicated below:



Year	Percentage
2019	104.781	%
2020	103.188	%
2021	101.594	%
2022 and thereafter	100.000	%

The 2015 Match Group Senior Notes were issued on November 16, 2015, in exchange for a portion of the IAC 2012 Senior Notes (the "Match Exchange Offer"). Promptly following the closing of the Match Exchange Offer, Match Group and its subsidiaries were designated as unrestricted subsidiaries of IAC for purposes of the indentures governing the 2013 and 2012 Senior Notes and the IAC Credit Facility. Following the designation, neither Match Group nor any of its subsidiaries guarantee any debt of IAC, or are subject to any of the covenants related to such debt.

At any time prior to December 15, 2017, the 2015 Match Group Senior Notes may be redeemed at a redemption price equal to the sum of the principal amount thereof, plus accrued and unpaid interest and a make-whole premium. Thereafter, the 2015 Match Group Senior Notes may be redeemed at the redemption prices set forth below, together with accrued and unpaid interest thereon to the applicable redemption date, if redeemed during the twelve-month period beginning on December 15 of the years indicated below:



Year	Percentage
2017	102.375	%
2018	101.583	%
2019	100.792	%
2020 and thereafter	100.000	%

The indentures governing the 2016 and 2015 Match Group Senior Notes contain covenants that would limit Match Group's ability to pay dividends or to make distributions and repurchase or redeem Match Group stock in the event a default has occurred or Match Group's leverage ratio (as defined in the indentures) exceeds 5.0 to 1.0. At December 31, 2016, there were no limitations pursuant thereto. There are additional covenants that limit Match Group's ability and the ability of its subsidiaries to, among other things, (i) incur indebtedness, make investments, or sell assets in the event Match Group is not in compliance with the leverage ratio set forth in the indenture, and (ii) incur liens, enter into agreements restricting Match Group subsidiaries' ability to pay dividends, enter into transactions with affiliates and consolidate, merge or sell substantially all of their assets.

Match Group Term Loan and Match Group Credit Facility:

On November 16, 2015, under a credit agreement (the "Match Group Credit Agreement"), Match Group borrowed $800 million in the form of a term loan (the "Match Group Term Loan"). On March 31, 2016, Match Group made a $10 million principal payment on the Match Group Term Loan. On June 1, 2016, the $400 million in proceeds from the 2016 Match Group Senior Notes, described above, were used to prepay a portion of the Match Group Term Loan. On December 8, 2016, Match Group made an additional $40 million principal payment on the Match Group Term Loan. In addition, the remaining outstanding balance of $350 million, which is due at maturity, was repriced. The Match Group Term Loan provides for additional annual principal payments as part of an excess cash flow sweep provision, the amount of which, if any, is governed by the secured net leverage ratio contained in the Match Group Credit Agreement. The Match Group Term Loan bears interest, at Match Group's option, at a base rate or LIBOR, plus 2.25% or 3.25%, respectively, and in the case of LIBOR, a floor of 0.75%. The interest rate at December 31, 2016 is 4.20%. Interest payments are due at least semi-annually through the term of the loan.

Match Group has a $500 million revolving credit facility (the "Match Group Credit Facility") that expires on October 7, 2020. At December 31, 2016 and 2015, there were no outstanding borrowings under the Match Group Credit Facility. The annual commitment fee on undrawn funds based on the current leverage ratio is 30 basis points. Borrowings under the Match Group Credit Facility bear interest, at Match Group's option, at a base rate or LIBOR, in each case plus an applicable margin, which is determined by reference to a pricing grid based on Match Group's consolidated net leverage ratio. The terms of the Match Group Credit Facility require Match Group to maintain a consolidated net leverage ratio of not more than 5.0 to 1.0 and a minimum interest coverage ratio of not less than 2.5 to 1.0 (in each case as defined in the agreement).

There are additional covenants under the Match Group Credit Facility and the Match Group Term Loan that limit the ability of Match Group and its subsidiaries to, among other things, incur indebtedness, pay dividends or make distributions. While the Match Group Term Loan remains outstanding, these same covenants under the Match Group Credit Agreement are more restrictive than the covenants that are applicable to the Match Group Credit Facility. Obligations under the Match Group Credit Facility and Match Group Term Loan are unconditionally guaranteed by certain Match Group wholly-owned domestic subsidiaries, and are also secured by the stock of certain Match Group domestic and foreign subsidiaries. The Match Group Term Loan and outstanding borrowings, if any, under the Match Group Credit Facility rank equally with each other, and have priority over the 2016 and 2015 Match Group Senior Notes to the extent of the value of the assets securing the borrowings under the Match Group Credit Agreement.

IAC Senior Notes:

The 2013 and 2012 Senior Notes were issued by IAC on November 15, 2013 and December 21, 2012, respectively. The 2013 and 2012 Senior Notes are unconditionally guaranteed by certain wholly-owned domestic subsidiaries, which are designated as guarantor subsidiaries. The guarantor subsidiaries are the same for the 2013 and 2012 Senior Notes. See "Note 22—Guarantor and Non-guarantor Financial Information" for financial information relating to guarantor and non-guarantor.

For the year ended December 31, 2016, the Company redeemed and repurchased $109.8 million of its 2013 Senior Notes and repurchased $16.6 million of its 2012 Senior Notes.

The indenture governing the 2013 Senior Notes contains covenants that would limit our ability to pay dividends or to make distributions and repurchase or redeem our stock in the event a default has occurred or our leverage ratio (as defined in the indenture) exceeds 3.0 to 1.0. At December 31, 2016, there were no limitations pursuant thereto. There are additional covenants that limit the Company's ability and the ability of its restricted subsidiaries to, among other things, (i) incur indebtedness, make investments, or sell assets in the event we are not in compliance with the financial ratio set forth in the indenture, and (ii) incur liens, enter into agreements limiting our restricted subsidiaries' ability to pay dividends, enter into transactions with affiliates and consolidate, merge or sell substantially all of our assets. The indenture governing the 2012 Senior Notes was amended to eliminate substantially all of the restrictive covenants contained therein in connection with the Match Exchange Offer.

The Company may redeem the 2013 Senior Notes at the redemption prices set forth below, together with accrued and unpaid interest thereon to the applicable redemption date, if redeemed during the twelve-month period beginning on November 30 of the years indicated below:



Year	Percentage
2016	101.625	%
2017 and thereafter	100.000	%

The redemption prices for the 2012 Senior Notes and the related time periods are identical to the 2015 Match Group Senior Notes presented above.

IAC Credit Facility:

IAC has a $300 million revolving credit facility (the "IAC Credit Facility") that expires October 7, 2020. At December 31, 2016 and 2015, there were no outstanding borrowings under the IAC Credit Facility. The annual commitment fee on undrawn funds is currently 35 basis points, and is based on the leverage ratio most recently reported. Borrowings under the IAC Credit Facility bear interest, at the Company's option, at a base rate or LIBOR, in each case, plus an applicable margin, which is determined by reference to a pricing grid based on the Company's leverage ratio. The terms of the IAC Credit Facility require that the Company maintains a leverage ratio (as defined in the agreement) of not more than 3.25 to 1.0 and restrict our ability to incur additional indebtedness. Borrowings under the IAC Credit Facility are unconditionally guaranteed by the same domestic subsidiaries that guarantee the 2013 and 2012 Senior Notes and are also secured by the stock of certain of our domestic and foreign subsidiaries. The 2013 and 2012 Senior Notes rank equally with each other, and are subordinate to outstanding borrowings under the IAC Credit Facility to extent of the value of the assets securing such borrowings.

Long-term debt maturities:



Years Ending December 31,	(In thousands)
2018	$	390,214
2022	833,281
2024	400,000
Total	1,623,495
Less: Current portion of long-term debt	20,000
Less: Unamortized original issue discount and original issue premium, net	5,245
Less: Unamortized debt issuance costs	15,766
Total long term debt, net of current portion	$	1,582,484

SHAREHOLDERS' EQUITY	12 Months Ended
SHAREHOLDERS' EQUITY	Dec. 31, 2016
Stockholders' Equity Note [Abstract]
SHAREHOLDERS' EQUITY	SHAREHOLDERS' EQUITY Description of Common Stock and Class B Convertible Common Stock Each holder of shares of IAC common stock and IAC Class B common stock vote together as a single class with respect to matters that may be submitted to a vote or for the consent of IAC's shareholders generally, including the election of directors. In connection with any such vote, each holder of IAC common stock is entitled to one vote for each share of IAC common stock held and each holder of IAC Class B common stock is entitled to ten votes for each share of IAC Class B common stock held. Notwithstanding the foregoing, the holders of shares of IAC common stock, acting as a single class, are entitled to elect 25% of the total number of IAC's directors, and, in the event that 25% of the total number of directors shall result in a fraction of a director, then the holders of shares of IAC common stock, acting as a single class, are entitled to elect the next higher whole number of IAC's directors. In addition, Delaware law requires that certain matters be approved by the holders of shares of IAC common stock or holders of IAC Class B common stock voting as a separate class. Shares of IAC Class B common stock are convertible into shares of IAC common stock at the option of the holder thereof, at any time, on a share-for-share basis. Such conversion ratio will in all events be equitably preserved in the event of any recapitalization of IAC by means of a stock dividend on, or a stock split or combination of, outstanding shares of IAC common stock or IAC Class B common stock, or in the event of any merger, consolidation or other reorganization of IAC with another corporation. Upon the conversion of shares of IAC Class B common stock into shares of IAC common stock, those shares of IAC Class B common stock will be retired and will not be subject to reissue. Shares of IAC common stock are not convertible into shares of IAC Class B common stock. Except as described herein, shares of IAC common stock and IAC Class B common stock are identical. The holders of shares of IAC common stock and the holders of shares of IAC Class B common stock are entitled to receive, share for share, such dividends as may be declared by IAC's Board of Directors out of funds legally available therefore. In the event of a liquidation, dissolution, distribution of assets or winding-up of IAC, the holders of shares of IAC common stock and the holders of shares of IAC Class B common stock are entitled to receive, share for share, all the assets of IAC available for distribution to its stockholders, after the rights of the holders of any IAC preferred stock have been satisfied. Reserved Common Shares In connection with equity compensation plans, 17.9 million shares of IAC common stock are reserved at December 31, 2016. Common Stock Repurchases During 2016 and 2015, the Company purchased 6.3 million and 3.0 million shares of IAC common stock for aggregate consideration, on a trade date basis, of $315.3 million and $200.0 million, respectively. During 2014, the Company did not purchase any shares of IAC common stock. On May 3, 2016, IAC's Board of Directors authorized the repurchase of an additional 10.0 million shares of IAC common stock. At December 31, 2016, the Company has approximately 9.3 million shares remaining in its share repurchase authorization.

- Definition

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB Topic 4.E)
-URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21484-112644

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21488-112644

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(e))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(31))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB Topic 4.C)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187143-122770

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(30))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(d))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23285-112656

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Preferred Stock
-URI http://asc.fasb.org/extlink&oid=6521494

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 16: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21564-112644

+ Details

ACCUMULATED OTHER COMPREHENSIVE LOSS

12 Months Ended

Dec. 31, 2016

Equity [Abstract]

ACCUMULATED OTHER COMPREHENSIVE LOSS

The following tables present the components of accumulated other comprehensive (loss) income and items reclassified out of accumulated other comprehensive loss into earnings:



	Year Ended December 31, 2016
	Foreign Currency Translation Adjustment			Unrealized Gains On Available-For-Sale Securities				Accumulated Other Comprehensive (Loss) Income
	(In thousands)
Balance at January 1	$	(154,645	)	$	2,542			$	(152,103	)
Other comprehensive (loss) income before reclassifications, net of tax benefit of $0.7 million related to unrealized losses on available-for-sale securities	(46,943		)	4,855				(42,088		)
Amounts reclassified to earnings	9,850			(2,913		)	^(a)	6,937
Net current period other comprehensive (loss) income	(37,093		)	1,942				(35,151		)
Reallocation of accumulated other comprehensive loss (income) related to the noncontrolling interests created in the Match Group IPO	21,589			(458		)		21,131
Balance at December 31	$	(170,149	)	$	4,026			$	(166,123	)

_________________________


(a)	Amount is net of a tax provision of $0.2 million.



	Year Ended December 31, 2015
	Foreign Currency Translation Adjustment			Unrealized (Losses) Gain On Available-For-Sale Securities				Accumulated Other Comprehensive Loss
	(In thousands)
Balance at January 1	$	(86,848	)	$	(852	)		$	(87,700	)
Other comprehensive (loss) income before reclassifications, net of tax provision of $0.6 million related to unrealized gains on available-for-sale securities	(65,606		)	3,537				(62,069		)
Amounts reclassified to earnings	(2,191		)	(143		)	^(b)	(2,334		)
Net current period other comprehensive (loss) income	(67,797		)	3,394				(64,403		)
Balance at December 31	$	(154,645	)	$	2,542			$	(152,103	)

_________________________

(b) Amount is net of a tax provision of $0.1 million.

- Definition

The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e689-108580

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669619-108580

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e640-108580

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e716-108580

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 16
-URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e709-108580

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e637-108580

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14
-URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e681-108580

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Reclassification Adjustments
-URI http://asc.fasb.org/extlink&oid=6522872

+ Details

(LOSS) EARNINGS PER SHARE

12 Months Ended

Dec. 31, 2016

Earnings Per Share [Abstract]

(LOSS) EARNINGS PER SHARE

The following table sets forth the computation of basic and diluted (loss) earnings per share attributable to IAC shareholders.



	Years Ended December 31,
	2016						2015					2014
	Basic			Diluted			Basic		Diluted			Basic		Diluted
	(In thousands, except per share data)
Numerator:
(Loss) earnings from continuing operations	$	(16,340	)	$	(16,340	)	$	113,357	$	113,357		$	234,557	$	234,557
Net (earnings) loss attributable to noncontrolling interests	(25,129		)	(25,129		)	6,098		6,098			5,643		5,643
Impact from Match Group's dilutive securities ^{(a) (b)}	—			—			—		(1,799		)	—		—
(Loss) earnings from continuing operations attributable to IAC shareholders	(41,469		)	(41,469		)	119,455		117,656			240,200		240,200
Earnings from discontinued operations attributable to IAC shareholders	189			189			17		17			174,673		174,673
Net (loss) earnings attributable to IAC shareholders	$	(41,280	)	$	(41,280	)	$	119,472	$	117,673		$	414,873	$	414,873

Denominator:
Weighted average basic shares outstanding	80,045			80,045			82,944		82,944			83,292		83,292
Dilutive securities including subsidiary denominated equity, stock options and RSUs^{(c) (d) (e)(f)}	—			—			—		5,323			—		5,266
Denominator for earnings per share—weighted average shares^{(c) (d) (e)(f)}	80,045			80,045			82,944		88,267			83,292		88,558

(Loss) earnings per share attributable to IAC shareholders:
(Loss) earnings per share from continuing operations	$	(0.52	)	$	(0.52	)	$	1.44	$	1.33		$	2.88	$	2.71
Discontinued operations	—			—			—		—			2.10		1.97
(Loss) earnings per share	$	(0.52	)	$	(0.52	)	$	1.44	$	1.33		$	4.98	$	4.68

__________________________________________________________________


(a)	Represents the impact on earnings related to Match Group's dilutive securities under the if-converted method.


(b)	The impact on earnings of Match Group's dilutive securities is not applicable for the year ended December 31, 2014 as it was a wholly-owned subsidiary of the Company until its IPO on November 24, 2015. For the year ended December 31, 2016, the impact on earnings related to Match Group's dilutive securities under the if-converted method is excluded as the impact is anti-dilutive.


(c)	For the year ended December 31, 2016, the Company had a loss from continuing operations; therefore, approximately 11.3 million potentially dilutive securities were excluded from computing dilutive earnings per share because the impact would have been anti-dilutive. Accordingly, the weighted average basic shares outstanding were used to compute all earnings per share amounts.

(d)

If the effect is dilutive, weighted average common shares outstanding include the incremental shares that would be issued upon the assumed exercise of subsidiary denominated equity, stock options and vesting of restricted stock units ("RSUs"). For the years ended December 31, 2015 and 2014, 1.2 million and 0.3 million potentially dilutive securities, respectively, are excluded from the calculation of diluted earnings per share because their inclusion would have been anti-dilutive.

(e)

Market-based awards and performance-based stock units (“PSUs”) are considered contingently issuable shares. Market-based awards and PSUs are included in the denominator for earnings per share if (i) the applicable market or performance condition(s) has been met and (ii) the inclusion of the market-based awards and PSUs are dilutive for the respective reporting periods. For the year ended December 31, 2015, 0.6 million market-based awards and PSUs were excluded from the calculation of diluted earnings per share because the market or performance conditions had not been met. For the year ended December 31, 2014, less than 0.1 million PSUs were excluded from the calculation of diluted earnings per share because the performance conditions had not been met.


(f)	See "Note 13—Stock-based Compensation" for additional information on equity instruments denominated in the shares of certain subsidiaries.

STOCK-BASED COMPENSATION

12 Months Ended

Dec. 31, 2016

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

STOCK-BASED COMPENSATION

IAC currently has two active plans under which awards have been granted. These plans cover stock options to acquire shares of IAC common stock, RSUs, PSUs and restricted stock, as well as provide for the future grant of these and other equity awards. These plans authorize the Company to grant awards to its employees, officers, directors and consultants. At December 31, 2016, there are 5.9 million shares available for grant under the plans.

The plans were adopted in 2008 and 2013, have a stated term of ten years, and provide that the exercise price of stock options granted will not be less than the market price of the Company's common stock on the grant date. The plans do not specify grant dates or vesting schedules of awards as those determinations have been delegated to the Compensation and Human Resources Committee of IAC's Board of Directors (the "Committee"). Each grant agreement reflects the vesting schedule for that particular grant as determined by the Committee. Broad-based stock option awards issued to date have generally vested in equal annual installments over a four-year period and RSU awards currently outstanding generally vest in three 33% installments over a three-year period, in each case, from the grant date.

The amount of stock-based compensation expense recognized in the consolidated statement of operations is reduced by estimated forfeitures, as the expense recorded is based on awards that are ultimately expected to vest. The forfeiture rate is estimated at the grant date based on historical experience and revised, if necessary, in subsequent periods if actual forfeitures differ from the estimated rate. At December 31, 2016, there is $177.9 million of unrecognized compensation cost, net of estimated forfeitures, related to all equity-based awards, which is expected to be recognized over a weighted average period of approximately 2.6 years.

The total income tax benefit recognized in the accompanying consolidated statement of operations for the years ended December 31, 2016, 2015 and 2014 related to stock-based compensation is $34.8 million, $36.6 million and $22.2 million, respectively.

IAC Stock Options

Stock options outstanding at December 31, 2016 and changes during the year ended December 31, 2016 are as follows:



	December 31, 2016
	Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term	Aggregate Intrinsic Value
	(Shares and intrinsic value in thousands)
Options outstanding at January 1, 2016	7,283		$	52.13
Granted	1,722		46.25
Exercised	(740	)	34.90
Forfeited	(142	)	53.30
Expired	(65	)	55.31
Options outstanding at December 31, 2016	8,058		$	52.41	6.7	$	120,681
Options exercisable	4,170		$	44.91	4.9	$	87,865

The aggregate intrinsic value in the table above represents the difference between IAC's closing stock price on the last trading day of 2016 and the exercise price, multiplied by the number of in-the-money options that would have been received by the option holders had all option holders exercised their options on December 31, 2016. The total intrinsic value of stock options exercised during the years ended December 31, 2016, 2015 and 2014 is $17.1 million, $53.0 million and $63.3 million, respectively.

The following table summarizes the information about stock options outstanding and exercisable at December 31, 2016:



	Options Outstanding				Options Exercisable
Range of Exercise Prices	Outstanding at December 31, 2016	Weighted- Average Remaining Contractual Life in Years	Weighted- Average Exercise Price		Exercisable at December 31, 2016	Weighted- Average Remaining Contractual Life in Years	Weighted- Average Exercise Price
	(Shares in thousands)
$10.01 to $20.00	404	2.6	$	18.02	404	2.6	$	18.02
$20.01 to $30.00	238	2.3	20.97		238	2.3	20.97
$30.01 to $40.00	913	4.1	31.61		913	4.1	31.61
$40.01 to $50.00	2,727	7.1	44.31		1,389	5.1	46.35
$50.01 to $60.00	464	5.7	58.30		333	4.3	58.80
$60.01 to $70.00	1,850	8.0	64.70		540	7.2	64.72
$70.01 to $80.00	962	8.2	74.23		228	7.8	73.20
$80.01 to $90.00	500	8.3	84.31		125	8.3	84.31
	8,058	6.7	$	52.41	4,170	4.9	$	44.91

The fair value of stock option awards, with the exception of market-based awards, is estimated on the grant date using the Black-Scholes option pricing model. The Black-Scholes option pricing model incorporates various assumptions, including expected volatility and expected term. During 2016, 2015 and 2014, expected stock price volatilities were estimated based on the Company's historical volatility. The risk-free interest rates are based on U.S. Treasuries with comparable terms as the awards, in effect at the grant date. Expected term is based upon the historical exercise behavior of our employees and the dividend yields are based on IAC's historical dividend payments. The following are the weighted average assumptions used in the Black-Scholes option pricing model:



	Years Ended December 31,
	2016		2015		2014
Expected volatility	29	%	28	%	31	%
Risk-free interest rate	1.2	%	1.6	%	1.5	%
Expected term	4.8 years		5.3 years		4.8 years
Dividend yield	—	%	2.0	%	1.5	%

During 2015, the Company granted market-based stock options to certain employees. These awards only vest if the price of IAC common stock exceeds the relevant price threshold for a twenty-day consecutive period and the service requirement is met. The service requirement provides that these awards vest in four equal annual installments beginning on the first anniversary of the grant date. The grant date fair value of each market-based award is estimated using a lattice model that incorporates a Monte Carlo simulation of IAC's stock price. The inputs used to fair value these awards include a weighted average expected volatility of 27%, risk-free interest rate of 2.3% and a 1.8% dividend yield. The expected term of these awards is derived from the output of the option valuation model. Expense is recognized over the longer of the vesting period of each of the four installments or the expected term. The weighted average expected term of these awards is 4 years.

Approximately 1.7 million, 2.5 million and 0.7 million stock options were granted by the Company during the years ended December 31, 2016, 2015 and 2014, respectively. The weighted average fair value of stock options granted during the years ended December 31, 2016, 2015 and 2014 with exercise prices equal to the market prices of IAC's common stock on the date of grant are $12.34, $15.24 and $16.67, respectively. During the year ended December 31, 2015, the weighted average exercise price and weighted average fair value of stock options granted with exercise prices greater than the market value of IAC's common stock on the date of grant are $84.31 and $12.00, respectively.

Cash received from stock option exercises and the related tax benefit realized for the years ended December 31, 2016, 2015 and 2014 are: $25.8 million and $6.1 million; $27.3 million and $25.8 million; and $39.1 million and $25.5 million, respectively. In January 2014, a portion of the Company's former Chief Executive Officer (the "Executive") who became the Chairman of Match Group outstanding IAC stock options were canceled and replaced with equity denominated in Match Group and various subsidiaries of Match Group. The incremental expense associated with this modification was $7.4 million.

IAC Restricted Stock Units and Performance-based Stock Units

RSUs and PSUs are awards in the form of phantom shares or units denominated in a hypothetical equivalent number of shares of IAC common stock and with the value of each RSU and PSU equal to the fair value of IAC common stock at the date of grant. Each RSU and PSU grant is subject to service-based vesting, where a specific period of continued employment must pass before an award vests. PSUs also include performance-based vesting, where certain performance targets set at the time of grant must be achieved before an award vests. For RSU grants, the expense is measured at the grant date as the fair value of IAC common stock and expensed as stock-based compensation over the vesting term. For PSU grants, the expense is measured at the grant date as the fair value of IAC common stock and expensed as stock-based compensation over the vesting term if the performance targets are considered probable of being achieved.

Unvested RSUs and PSUs outstanding at December 31, 2016 and changes during the year ended December 31, 2016 are as follows:



	RSUs				PSUs
	Number of shares		Weighted Average Grant Date Fair Value		Number of shares		Weighted Average Grant Date Fair Value
	(Shares in thousands)
Unvested at January 1, 2016	650		$	57.76	2		$	71.39
Granted	148		46.92		—		—
Vested	(268	)	52.41		(2	)	71.39
Forfeited	(4	)	61.68		—		—
Unvested at December 31, 2016	526		$	57.41	—		$	—

The weighted average fair value of RSUs and PSUs granted during the years ended December 31, 2016, 2015 and 2014 based on market prices of IAC's common stock on the grant date was $46.92, $67.71 and $68.13, respectively. The total fair value of RSUs and PSUs that vested during the years ended December 31, 2016, 2015 and 2014 was $13.5 million, $16.8 million and $20.4 million, respectively.

Equity Instruments Denominated in the Shares of Certain Subsidiaries

The following description excludes awards denominated in the shares of the Company's publicly-traded subsidiary, Match Group. Match Group stock-based awards are issued pursuant to its stock incentive plan.

IAC has granted stock options and stock settled stock appreciation rights denominated in the equity of its subsidiaries to employees and management of certain subsidiaries. These equity awards vest over a period of years or upon the occurrence of certain prescribed events. The value of the stock options and stock settled stock appreciation rights is tied to the value of the common stock of these subsidiaries. Accordingly, these interests only have value to the extent the relevant business appreciates in value above the initial value utilized to determine the exercise price. These interests can have significant value in the event of significant appreciation. The interests are ultimately settled in IAC common stock with fair market value generally determined by negotiation or arbitration, at various dates through 2026. These equity awards are settled on a net basis, with the award holder entitled to receive a payment in shares equal to the intrinsic value of the award at exercise less an amount equal to the required cash tax withholding payment. The number of shares ultimately needed to settle these awards may vary significantly from the estimated numbers below as a result of both movements in our stock price and a determination of fair value of the relevant subsidiary that is different than our estimate. The expense associated with these equity awards is initially measured at fair value at the grant date and is expensed as stock-based compensation over the vesting term. The aggregate number of IAC common shares that would be required to settle these interests, other than for Match Group subsidiaries, at current estimated fair values, including vested and unvested interests (which will be reduced by the number of shares withheld to cover employee withholding taxes), at December 31, 2016 is 2.8 million shares, which is included in the calculation of diluted earnings per share, if the effect is dilutive. The comparable amount at December 31, 2015 is 2.3 million shares. Giving effect to withholding taxes, which will be paid by the Company on behalf of the employees at exercise, the aggregate number of shares and cash that would be required to settle the vested and unvested interests at estimated fair values on December 31, 2016 is 1.4 million shares and $90.8 million, respectively, assuming a 50% withholding rate; the comparable amounts at December 31, 2015 are 1.1 million shares and $69.1 million, respectively.

Following the completion of the Match Group IPO, equity awards that relate to the subsidiaries of Match Group will be settleable, at IAC's election, in shares of IAC common stock or Match Group common stock. To the extent shares of IAC common stock are issued in settlement of these awards, Match Group will reimburse IAC for the cost of those shares by issuing IAC shares of Match Group common stock. The aggregate number of IAC common shares at December 31, 2016 that would be required to settle Match Group subsidiary equity awards at current estimated fair values, including vested and unvested interests (which will be reduced by the number of shares withheld to cover employee withholding taxes), is 5.1 million shares and the comparable amount at December 31, 2015 is 4.1 million shares. Giving effect to withholding taxes, which will be paid by Match Group on behalf of the employees at exercise, the aggregate number of shares and cash that would be required to settle the vested and unvested interests at estimated fair values on December 31, 2016 is 2.5 million shares and $164.6 million, respectively, assuming a 50% withholding rate; the comparable amounts at December 31, 2015 are 2.1 million shares and $123.2 million, respectively. These amounts are in addition to the numbers in the paragraph above. Assuming no change in the value of the Company’s common stock at December 31, 2016, each incremental increase of 10% over the Company’s December 31, 2016 fair value estimate of these Match Group subsidiaries would require approximately 0.7 million incremental aggregate shares to settle these awards.

During 2016 and 2015, the Company granted a nominal amount of IAC denominated market-based awards to certain Match Group employees. The number of awards that ultimately vest is dependent upon Match Group's stock price. The grant date fair value of each market-based award is estimated using a lattice model that incorporates a Monte Carlo simulation of Match Group's stock price. Each market-based award is subject to service-based vesting, where a specific period of continued employment must pass before an award vests. Some of the market-based awards contain performance targets set at the time of grant that must be achieved before an award vests.

During the first quarter of 2016, the Company modified certain subsidiary denominated equity awards resulting in a modification charge of $7.3 million of which $6.3 million was recognized as stock-based compensation for the year ended December 31, 2016 and $1.0 million will be recognized over the remaining life of the modified awards.

During the first quarter of 2015, the Company modified certain subsidiary denominated equity awards resulting in a modification charge of $5.8 million of which $0.6 million and $3.5 million was recognized in 2016 and 2015, respectively, and the remaining charge will be recognized over the remaining life of the modified awards through 2019. During the third quarter of 2015, the Company modified certain subsidiary denominated vested equity awards and recognized a modification charge of $6.8 million. During the fourth quarter of 2015, the Company repurchased certain subsidiary denominated vested equity awards in exchange for $23.4 million in cash and fully vested modified equity awards and recognized a modification charge of $7.7 million. These modification charges are included in stock-based compensation for the year ended December 31, 2015.

During 2014, the Company granted an equity award denominated in shares of a subsidiary of the Company to a non-employee. This award is marked to market each reporting period. The award vests at multiple times a year and is fully vested in October 2017. In the third quarter of 2016, the Company settled the vested portion of the award for cash of $13.4 million. At December 31, 2016, the total fair value of the remaining award, at current estimated fair value, including vested and unvested interests, is $14.3 million.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ References + Details

SEGMENT INFORMATION

12 Months Ended

Dec. 31, 2016

Segment Reporting [Abstract]

SEGMENT INFORMATION

The overall concept that IAC employs in determining its operating segments is to present the financial information in a manner consistent with how the chief operating decision maker views the businesses, how the businesses are organized as to segment management, and the focus of the businesses with regards to the types of services or products offered or the target market. Operating segments are combined for reporting purposes if they meet certain aggregation criteria, which principally relate to the similarity of their economic characteristics or, in the case of the Other reportable segment, do not meet the quantitative thresholds that require presentation as separate operating segments.



	Years Ended December 31,
	2016			2015			2014
	(In thousands)
Revenue:
Match Group	$	1,222,526		$	1,020,431		$	888,268
HomeAdvisor	498,890			361,201			283,541
Video	228,649			213,317			182,454
Applications	604,140			760,748			776,707
Publishing	407,313			691,686			791,549
Other	178,949			184,095			187,834
Inter-segment elimination	(585		)	(545		)	(806		)
Total	$	3,139,882		$	3,230,933		$	3,109,547



	Years Ended December 31,
	2016			2015			2014
	(In thousands)
Operating Income (Loss):
Match Group	$	305,908		$	193,556		$	228,567
HomeAdvisor	35,343			6,452			1,061
Video	(27,656		)	(38,756		)	(43,346		)
Applications	109,663			175,145			178,960
Publishing	(334,417		)	(26,692		)	110,523
Other	(2,037		)	(9,186		)	8,108
Corporate	(119,429		)	(120,931		)	(105,146		)
Total	$	(32,625	)	$	179,588		$	378,727



	Years Ended December 31,
	2016			2015			2014
	(In thousands)
Adjusted EBITDA:^(a)
Match Group	$	403,955		$	278,667		$	273,448
HomeAdvisor	48,546			18,529			17,701
Video	(21,247		)	(38,384		)	(39,916		)
Applications	132,276			184,258			186,192
Publishing	(7,571		)	87,788			150,960
Other	1,227			10,621			13,134
Corporate	(55,967		)	(55,689		)	(57,443		)
Total	$	501,219		$	485,790		$	544,076



	December 31,
	2016		2015
	(In thousands)
Segment Assets:^(b)
Match Group	$	509,936	$	330,736
HomeAdvisor	97,751		32,116
Video	230,269		90,671
Applications	109,019		108,997
Publishing	409,838		391,450
Other	—		64,550
Corporate	1,009,557		1,483,979
Total	$	2,366,370	$	2,502,499



	Years Ended December 31,
	2016		2015		2014
	(In thousands)
Capital expenditures:
Match Group	$	48,903	$	29,156	$	21,793
HomeAdvisor	16,660		10,170		6,775
Video	2,508		2,466		1,878
Applications	1,196		4,681		4,220
Publishing	2,093		6,283		13,481
Other	2,907		3,175		2,845
Corporate	3,772		6,118		6,241
Total	$	78,039	$	62,049	$	57,233

_______________________________________________________________________________

(a)

The Company's primary financial measure is Adjusted EBITDA, which is defined as operating income excluding: (1) stock-based compensation expense; (2) depreciation; and (3) acquisition-related items consisting of (i) amortization of intangible assets and impairments of goodwill and intangible assets, if applicable, and (ii) gains and losses recognized on changes in the fair value of contingent consideration arrangements. The Company believes this measure is useful for analysts and investors as this measure allows a more meaningful comparison between our performance and that of our competitors. Moreover, our management uses this measure internally to evaluate the performance of our business as a whole and our individual business segments, and this measure is one of the primary metrics by which our internal budgets are based and by which management is compensated. The above items are excluded from our Adjusted EBITDA measure because these items are non-cash in nature, and we believe that by excluding these items, Adjusted EBITDA corresponds more closely to the cash operating income generated from our business, from which capital investments are made and debt is serviced. Adjusted EBITDA has certain limitations in that it does not take into account the impact to IAC's statement of operations of certain expenses.


(b)	Consistent with the Company's primary metric (described in (a) above), the Company excludes, if applicable, goodwill and intangible assets from the measure of segment assets presented above.

Revenue by geography is based on where the customer is located. Geographic information about revenue and long-lived assets is presented below:



	Years Ended December 31,
	2016		2015		2014
	(In thousands)
Revenue
United States	$	2,318,976	$	2,376,035	$	2,146,189
All other countries	820,906		854,898		963,358
Total	$	3,139,882	$	3,230,933	$	3,109,547



	December 31,
	2016		2015
	(In thousands)
Long-lived assets (excluding goodwill and intangible assets)
United States	$	281,725	$	279,913
All other countries	24,523		22,904
Total	$	306,248	$	302,817

The following tables reconcile operating income (loss) for the Company's reportable segments and net (loss) earnings attributable to IAC shareholders to Adjusted EBITDA:



	Year Ended December 31, 2016
	Operating Income (Loss)			Stock-Based Compensation Expense		Depreciation		Amortization of Intangibles		Acquisition-related Contingent Consideration Fair Value Adjustments			Goodwill Impairment		Adjusted EBITDA
	(In thousands)
Match Group	$	305,908		$	52,988	$	31,227	$	23,029	$	(9,197	)	$	—	$	403,955
HomeAdvisor	35,343			1,631		8,419		3,153		—			—		48,546
Video	(27,656		)	640		1,785		4,176		(192		)	—		(21,247		)
Applications	109,663			—		5,095		5,483		12,035			—		132,276
Publishing	(334,417		)	—		8,531		42,948		—			275,367		(7,571		)
Other	(2,037		)	—		2,718		637		(91		)	—		1,227
Corporate	(119,429		)	49,561		13,901		—		—			—		(55,967		)
Total	$	(32,625	)	$	104,820	$	71,676	$	79,426	$	2,555		$	275,367	$	501,219
Interest expense	(109,110		)
Other income, net	60,461
Loss from continuing operations before income taxes	(81,274		)
Income tax benefit	64,934
Loss from continuing operations	(16,340		)
Earnings from discontinued operations, net of tax	189
Net loss	(16,151		)
Net earnings attributable to noncontrolling interests	(25,129		)
Net loss attributable to IAC shareholders	$	(41,280	)



	Year Ended December 31, 2015
	Operating Income (Loss)			Stock-Based Compensation Expense		Depreciation		Amortization of Intangibles		Acquisition-related Contingent Consideration Fair Value Adjustments			Goodwill Impairment		Adjusted EBITDA
	(In thousands)
Match Group	$	193,556		$	50,083	$	25,983	$	20,101	$	(11,056	)	$	—	$	278,667
HomeAdvisor	6,452			1,649		6,593		3,835		—			—		18,529
Video	(38,756		)	360		1,091		1,558		(2,637		)	—		(38,384		)
Applications	175,145			—		4,617		6,264		(1,768		)	—		184,258
Publishing	(26,692		)	—		9,577		104,903		—			—		87,788
Other	(9,186		)	—		2,460		3,291		—			14,056		10,621
Corporate	(120,931		)	53,358		11,884		—		—			—		(55,689		)
Total	179,588			$	105,450	$	62,205	$	139,952	$	(15,461	)	$	14,056	$	485,790
Interest expense	(73,636		)
Other income, net	36,921
Earnings from continuing operations before income taxes	142,873
Income tax provision	(29,516		)
Earnings from continuing operations	113,357
Earnings from discontinued operations, net of tax	17
Net earnings	113,374
Net loss attributable to noncontrolling interests	6,098
Net earnings attributable to IAC shareholders	$	119,472



	Year Ended December 31, 2014
	Operating Income (Loss)			Stock-Based Compensation Expense		Depreciation		Amortization of Intangibles		Acquisition-related Contingent Consideration Fair Value Adjustments			Adjusted EBITDA
	(In thousands)
Match Group	$	228,567		$	20,851	$	25,547	$	11,395	$	(12,912	)	$	273,448
HomeAdvisor	1,061			558		6,520		9,562		—			17,701
Video	(43,346		)	647		899		2,099		(215		)	(39,916		)
Applications	178,960			—		4,385		2,521		326			186,192
Publishing	110,523			—		11,856		28,581		—			150,960
Other	8,108			—		1,824		3,768		(566		)	13,134
Corporate	(105,146		)	37,578		10,125		—		—			(57,443		)
Total	378,727			$	59,634	$	61,156	$	57,926	$	(13,367	)	$	544,076
Interest expense	(56,314		)
Other expense, net	(52,484		)
Earnings from continuing operations before income taxes	269,929
Income tax provision	(35,372		)
Earnings from continuing operations	234,557
Earnings from discontinued operations, net of tax	174,673
Net earnings	409,230
Net loss attributable to noncontrolling interests	5,643
Net earnings attributable to IAC shareholders	$	414,873

The following tables reconcile segment assets to total assets:



	December 31, 2016
	Segment Assets		Goodwill		Indefinite-Lived Intangible Assets		Definite-Lived Intangible Assets		Total Assets
	(In thousands)
Match Group	$	509,936	$	1,280,960	$	238,361	$	10,809	$	2,040,066
HomeAdvisor	97,751		170,611		4,884		5,908		279,154
Video	230,269		25,239		1,800		4,167		261,475
Applications	109,019		447,242		60,600		2,481		619,342
Publishing	409,838		—		15,000		11,441		436,279
Other	—		—		—		—		—
Corporate^(c)	1,009,557		—		—		—		1,009,557
Total	$	2,366,370	$	1,924,052	$	320,645	$	34,806	$	4,645,873



	December 31, 2015
	Segment Assets		Goodwill		Indefinite-Lived Intangible Assets		Definite-Lived Intangible Assets		Total Assets
	(In thousands)
Match Group	$	330,736	$	1,293,109	$	243,697	$	32,711	$	1,900,253
HomeAdvisor	32,116		150,251		600		5,727		188,694
Video	90,671		15,590		1,800		3,343		111,404
Applications	108,997		447,242		60,600		7,964		624,803
Publishing	391,450		277,192		59,805		7,849		736,296
Other	64,550		61,980		13,635		3,097		143,262
Corporate^(c)	1,483,979		—		—		—		1,483,979
Total	$	2,502,499	$	2,245,364	$	380,137	$	60,691	$	5,188,691

_____________________________________


(c)	Corporate assets consist primarily of cash and cash equivalents, marketable securities and IAC's headquarters building.

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8981-108599

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8971-108599

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8595-108599

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8380-108599

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8933-108599

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 26
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8844-108599

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 35
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8984-108599

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 40
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9031-108599

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 42
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9054-108599

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8538-108599

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 29
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8864-108599

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 31
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8924-108599

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599

+ Details

COMMITMENTS

12 Months Ended

Dec. 31, 2016

Commitments and Contingencies Disclosure [Abstract]

COMMITMENTS

The Company leases land, office space, data center facilities and equipment used in connection with its operations under various operating leases, many of which contain escalation clauses. The Company is also committed to pay a portion of the related operating expenses under a data center lease agreement. These operating expenses are not included in the table below.

Future minimum payments under operating lease agreements are as follows:



Years Ending December 31,	(In thousands)
2017	$	31,834
2018	31,661
2019	24,316
2020	18,523
2021	13,239
Thereafter	189,070
Total	$	308,643

Expenses charged to operations under these agreements are $49.3 million, $39.4 million and $41.2 million for the years ended December 31, 2016, 2015 and 2014, respectively.

The Company's most significant operating lease is a seventy-seven year land lease for IAC's headquarters building in New York City and approximates 57% of the future minimum payments due under all operating lease agreements in the table above.

The Company also has funding commitments that could potentially require its performance in the event of demands by third parties or contingent events as follows:



	Amount of Commitment Expiration Per Period
	Less Than 1 Year		1-3 Years		3-5 Years		More Than 5 Years		Total Amounts Committed
	(In thousands)
Purchase obligations	$	10,581	$	10,000	$	—	$	—	$	20,581
Letters of credit and surety bonds	768		63		—		1,437		2,268
Total commercial commitments	$	11,349	$	10,063	$	—	$	1,437	$	22,849

The purchase obligations principally include a web hosting commitment. The letters of credit support the Company's casualty insurance program.

CONTINGENCIES	12 Months Ended
CONTINGENCIES	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
CONTINGENCIES	CONTINGENCIES In the ordinary course of business, the Company is a party to various lawsuits. The Company establishes reserves for specific legal matters when it determines that the likelihood of an unfavorable outcome is probable and the loss is reasonably estimable. Management has also identified certain other legal matters where we believe an unfavorable outcome is not probable and, therefore, no reserve is established. Although management currently believes that resolving claims against us, including claims where an unfavorable outcome is reasonably possible, will not have a material impact on the liquidity, results of operations, or financial condition of the Company, these matters are subject to inherent uncertainties and management's view of these matters may change in the future. The Company also evaluates other contingent matters, including income and non-income tax contingencies, to assess the likelihood of an unfavorable outcome and estimated extent of potential loss. It is possible that an unfavorable outcome of one or more of these lawsuits or other contingencies could have a material impact on the liquidity, results of operations, or financial condition of the Company. See "Note 3—Income Taxes" for additional information related to income tax contingencies.

- Definition

The entire disclosure for loss and gain contingencies. Describes any existing condition, situation, or set of circumstances involving uncertainty as of the balance sheet date (or prior to issuance of the financial statements) as to a probable or reasonably possible loss incurred by an entity that will ultimately be resolved when one or more future events occur or fail to occur, and typically discloses the amount of loss recorded or a range of possible loss, or an assertion that no reasonable estimate can be made.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14472-108349

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12021-110248

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14394-108349

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12053-110248

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14453-108349

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14615-108349

+ Details

SUPPLEMENTAL CASH FLOW INFORMATION

12 Months Ended

Dec. 31, 2016

Supplemental Cash Flow Information [Abstract]

SUPPLEMENTAL CASH FLOW INFORMATION

Supplemental Disclosure of Non-Cash Transactions:

The Company recorded acquisition-related contingent consideration liabilities of $0.2 million, $27.4 million and $8.8 million during the years ended December 31, 2016, 2015 and 2014, respectively, in connection with various acquisitions. See "Note 8—Fair Value Measurements and Financial Instruments" for additional information on contingent consideration arrangements.

On November 16, 2015, Match Group exchanged $445.3 million of 2012 Senior Notes for $445.2 million of Match Group Senior Notes. See "Note 9—Long-term Debt" for additional information on the note exchange.

Supplemental Disclosure of Cash Flow Information:



	Years Ended December 31,
	2016			2015			2014
	(In thousands)
Cash paid (received) during the year for:
Interest	$	107,360		$	51,666		$	54,027
Income tax payments	69,103			70,762			63,521
Income tax refunds	(23,877		)	(5,619		)	(10,477		)

RELATED PARTY TRANSACTIONS

12 Months Ended

Dec. 31, 2016

RELATED PARTY TRANSACTIONS

IAC and Match Group:

IAC and Match Group, in connection with Match Group's IPO, entered into the following agreements:


•	A Master Transaction Agreement, under which Match Group agrees to assume all of the assets and liabilities related to its business and agrees to indemnify IAC against any losses arising out of any breach by Match Group of the Master Transaction Agreement or other IPO related agreements;


•	An Investor Rights Agreement that provides IAC with (i) specified registration and other rights relating to shares of Match Group's common stock and (ii) anti-dilution rights with respect to Match Group's common stock;


•	An Employee Matters Agreement, which governs the respective rights, responsibilities and obligations of IAC and Match Group after the IPO with respect to a range of compensation and benefit issues;


•	A Tax Sharing Agreement, which governs the respective rights, responsibilities and obligations of IAC and Match Group with respect to tax liabilities and benefits, entitlement to refunds, preparation of tax returns, tax contests and other tax matters regarding U.S. federal, state, local and foreign income taxes; and

•

A Services Agreement, under which IAC has agreed to provide a range of services to Match Group, including, among others, (i) assistance with certain legal, finance, internal audit, treasury, information technology support, insurance and tax affairs, including assistance with certain public company reporting obligations; (ii) payroll processing services; (iii) tax compliance services; and (iv) such other services as to which IAC and Match Group may agree, and Match Group agrees to provide IAC informational technology services and such other services as to which IAC and Match Group may agree.

For the year ended December 31, 2016, 1.0 million shares of Match Group common stock were issued to IAC pursuant to the employee matters agreement; 0.5 million of which were issued as reimbursement for shares of IAC common stock issued in connection with the exercise and settlement of equity awards denominated in shares of a subsidiary of Match Group; and 0.4 million of which were issued as reimbursement for shares of IAC common stock issued in connection with the exercise and vesting of IAC equity awards held by Match Group employees.

For the year ended December 31, 2016 and for the period from the date of the IPO through December 31, 2015, Match Group was charged $11.8 million and $0.7 million, respectively, by the Company for services rendered pursuant to a services agreement. These amounts were paid in full by Match Group at December 31, 2016 and 2015, respectively.

At December 31, 2016, Match Group had a tax receivable of $9.0 million due from the Company pursuant to the tax sharing agreement. Payments made to the Company during 2016 pursuant to this agreement were $19.9 million.

IAC and Expedia:

Each of IAC and Expedia has a 50% ownership interest in two aircraft that may be used by both companies. The Company and Expedia purchased the second of these two aircraft during 2013. The Company paid $25 million (50% of the total purchase price and refurbish costs) for its interest. Members of the aircrafts' flight crews are employed by an entity in which each of the Company and Expedia has a 50% ownership interest. The Company and Expedia have agreed to share costs relating to flight crew compensation and benefits pro-rata according to each company's respective usage of the aircraft, for which they are separately billed by the entity described above. The Company and Expedia are related parties since they are under common control, given that Mr. Diller serves as Chairman and Senior Executive of both IAC and Expedia. For the years ended December 31, 2016, 2015 and 2014, total payments made to this entity by the Company were not material.

BENEFIT PLANS	12 Months Ended
BENEFIT PLANS	Dec. 31, 2016
Compensation and Retirement Disclosure [Abstract]
BENEFIT PLANS	BENEFIT PLANS IAC has a retirement savings plan in the United States that qualifies under Section 401(k) of the Internal Revenue Code. Under the IAC/InterActiveCorp Retirement Savings Plan ("the Plan"), participating employees may contribute up to 50% of their pre-tax earnings, but not more than statutory limits. IAC contributes fifty cents for each dollar a participant contributes in this plan, with a maximum contribution of 3% of a participant's eligible earnings. Matching contributions for the Plan for the years ended December 31, 2016, 2015 and 2014 are $10.0 million, $9.1 million and $7.5 million, respectively. Matching contributions are invested in the same manner as each participant's voluntary contributions in the investment options provided under the Plan. An investment option in the Plan is IAC common stock, but neither participant nor matching contributions are required to be invested in IAC common stock. The increase in matching contributions in 2016 and 2015 are due primarily to an increase in participation in the Plan due to an increase in headcount. The increase in matching contributions in 2015 was further impacted by an increase in participation due to acquisitions. IAC also has or participates in various benefit plans, principally defined contribution plans, for its international employees. IAC's contributions for these plans for the years ended December 31, 2016, 2015 and 2014 are $2.1 million, $2.5 million and $2.5 million, respectively. The decrease in contributions in 2016 is due, in part, to the sale of PriceRunner.

CONSOLIDATED FINANCIAL STATEMENT DETAILS

12 Months Ended

Dec. 31, 2016

Organization, Consolidation and Presentation of Financial Statements [Abstract]

CONSOLIDATED FINANCIAL STATEMENT DETAILS



	December 31,
	2016		2015
	(In thousands)
Other current assets:
Income taxes receivable	$	41,352	$	26,793
Production costs	39,763		24,804
Prepaid expenses	37,665		40,091
Capitalized downloadable search toolbar costs, net	28,737		27,929
Other	56,551		54,669
Other current assets	$	204,068	$	174,286



	December 31,
	2016			2015
	(In thousands)
Property and equipment, net:
Buildings and leasehold improvements	$	247,451		$	235,545
Computer equipment and capitalized software	259,464			239,309
Furniture and other equipment	93,002			88,664
Projects in progress	13,048			18,676
Land	5,117			5,117
	618,082			587,311
Accumulated depreciation and amortization	(311,834		)	(284,494		)
Property and equipment, net	$	306,248		$	302,817



	December 31,
	2016		2015
	(In thousands)
Accrued expenses and other current liabilities:
Accrued employee compensation and benefits	$	106,301	$	104,481
Accrued advertising expense	68,916		87,064
Other	169,693		191,706
Accrued expenses and other current liabilities	$	344,910	$	383,251



	Years Ended December 31,
	2016		2015		2014
	(In thousands)
Revenue:
Service revenue	$	2,967,474	$	3,077,080	$	2,957,735
Product revenue	172,408		153,853		151,812
Revenue	$	3,139,882	$	3,230,933	$	3,109,547



	Years Ended December 31,
	2016		2015		2014
	(In thousands)
Cost of revenue:
Cost of service revenue	$	617,058	$	652,137	$	734,222
Cost of product revenue	138,672		126,024		125,982
Cost of revenue	$	755,730	$	778,161	$	860,204



	Years Ended December 31,
	2016		2015		2014
	(In thousands)
Other income (expense), net	$	60,461	$	36,921	$	(52,484	)

Other income, net in 2016^(a) includes gains of $37.5 million and $12.0 million related to the sale of ShoeBuy and PriceRunner, respectively, $34.3 million in net foreign currency exchange gains due to strengthening of the dollar relative to the British Pound and Euro, interest income of $5.1 million and a $3.6 million gain related to the sale of marketable equity securities, partially offset by a non-cash charge of $12.1 million related to the write-off of a proportionate share of original issue discount and deferred financing costs associated with the repayment of $440 million of the Match Group Term Loan, $10.0 million in other-than-temporary impairment charges related to certain cost method investments as a result of our assessment of the near-term prospects and financial condition of the investees, a loss of $3.8 million related to the sale of ASKfm and a $3.6 million loss on the 2012 and 2013 Senior Note redemptions and repurchases.

Other income, net in 2015 included a gain of $34.3 million from a real estate transaction, $5.4 million in net foreign currency exchange gains and $4.3 million in interest income, partially offset by $6.7 million in other-than-temporary impairment charges related to certain cost method investments.

Other expense, net in 2014 included $66.6 million in other-than-temporary impairment charges related to certain cost method investments and a $4.2 million other-than-temporary impairment charge on one of our equity method investments following the sale of a majority of the investee's assets, partially offset by a $19.4 million gain related to the sale of Urbanspoon, $4.4 million in interest income and $3.6 million in gains related to the sale of several long-term investments.

________________________

(a)

PriceRunner was sold on March 18, 2016. PriceRunner's 2016 revenue, operating income and Adjusted EBITDA were $7.1 million, $2.2 million and $2.6 million, respectively. Included in PriceRunner's operating income were $0.3 million of amortization of intangibles and $0.1 million of depreciation. ASKfm was sold on June 30, 2016. ASKfm's 2016 revenue, operating loss and Adjusted EBITDA loss were $3.0 million, $4.9 million and $3.9 million, respectively. Included in ASKfm's operating loss were $0.5 million of amortization of intangibles and $0.5 million of depreciation. ShoeBuy was sold on December 30, 2016. ShoeBuy's 2016 revenue, operating loss and Adjusted EBITDA loss were $171.8 million, $4.2 million and $1.3 million, respectively. Included in ShoeBuy's operating loss were $2.7 million of depreciation and $0.3 million of amortization of intangibles.

PriceRunner's full year 2015 revenue, operating income and Adjusted EBITDA were $32.3 million, $9.7 million and $13.0 million, respectively. Included in PriceRunner's operating income were $2.9 million of amortization of intangibles and $0.4 million of depreciation. ASKfm's full year 2015 revenue, operating loss and Adjusted EBITDA loss were $10.9 million, $9.1 million and $6.1 million, respectively. Included in ASKfm's operating loss were $2.0 million of amortization of intangibles and $1.1 million of depreciation. ShoeBuy's full year 2015 revenue, operating loss and Adjusted EBITDA loss were $151.8 million, $18.9 million and $2.4 million, respectively. Included in ShoeBuy's operating loss were $14.1 million of goodwill impairment, $2.0 million of depreciation and $0.4 million of amortization of intangibles.

RESTRUCTURING CHARGES

12 Months Ended

Dec. 31, 2016

Restructuring and Related Activities [Abstract]

RESTRUCTURING CHARGES

Publishing and Applications segments

During 2016, the Company recognized significant declines in Publishing and Applications revenue due to the effects of the new Google contract, which was effective April 1, 2016, as well as declines from certain other legacy businesses. In an effort to manage overall costs, the Company incurred restructuring charges throughout 2016 related to lease termination costs and severance. For the year ended December 31, 2016, the Company incurred $18.3 million in costs related to this restructure. A summary of the costs incurred, payments made and the related accruals for both the Publishing and Applications segments at December 31, 2016 is presented below.

See "Note 2—Summary of Significant Accounting Policies—Certain Risks and Concentrations" for additional information on revenue earned from Google.



	Year Ended December 31, 2016
	Publishing		Applications		Total
	(In thousands)
Lease termination costs	$	8,172	$	100	$	8,272
Severance	7,461		2,532		9,993
Total	$	15,633	$	2,632	$	18,265



	December 31, 2016
	Lease Termination Costs			Severance			Total
	(In thousands)
Publishing accrual:
Charges incurred	$	8,172		$	7,461		$	15,633
Payments made	(314		)	(5,074		)	(5,388		)
Publishing accrual as of December 31	$	7,858		$	2,387		$	10,245



	December 31, 2016
	Lease Termination Costs		Severance			Total
	(In thousands)
Applications accrual:
Charges incurred	$	100	$	2,532		$	2,632
Payments made	—		(1,933		)	(1,933		)
Applications accrual as of December 31	$	100	$	599		$	699

The costs are allocated as follows in the accompanying consolidated statement of operations:



	Year Ended December 31, 2016
	Publishing		Applications		Total
	(In thousands)
Cost of revenue	$	9,186	$	931	$	10,117
Selling and marketing expense	3,080		593		3,673
General and administrative expense	2,175		351		2,526
Product development expense	1,192		757		1,949
Total	$	15,633	$	2,632	$	18,265

Match Group segment

In addition to the restructuring charges at the Publishing and Applications segments discussed above, the Match Group has been in the process of modernizing and streamlining its underlying Dating technology infrastructure that supports both its mobile and desktop platforms, as well as consolidating its European operations from seven principal locations down to three. The project is complete at December 31, 2016. For the year ended December 31, 2016, the Match Group incurred $4.9 million in costs related to this project, compared to $16.8 million for the year ended December 31, 2015. A summary of the costs incurred, payments made and the related accruals for the Match Group segment at December 31, 2016 and 2015 are presented below.



	December 31, 2016
	Severance			Professional Fees & Other			Total
	(In thousands)
Accrual as of January 1	$	3,013		$	564		$	3,577
Charges incurred	345			4,576			4,921
Payments made	(2,404		)	(4,844		)	(7,248		)
Accrual as of December 31	$	954		$	296		$	1,250



	December 31, 2015
	Severance			Professional Fees & Other			Total
	(In thousands)
Accrual as of January 1	$	795		$	933		$	1,728
Charges incurred	8,350			8,417			16,767
Payments made	(6,132		)	(8,786		)	(14,918		)
Accrual as of December 31	$	3,013		$	564		$	3,577

The costs are allocated as follows in the statement of operations:



	Year Ended December 31,
	2016		2015
	(In thousands)
Cost of revenue	$	566	$	2,947
Selling and marketing expense	560		1,678
General and administrative expense	1,647		8,160
Product development expense	2,148		3,982
Total	$	4,921	$	16,767

GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION

12 Months Ended

Dec. 31, 2016

Guarantor and Nonguarantor Financial Statements [Abstract]

GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION

The 2013 and 2012 Senior Notes are unconditionally guaranteed, jointly and severally, by certain domestic subsidiaries which are 100% owned by the Company. The following tables present condensed consolidating financial information at December 31, 2016 and 2015 and for the years ended December 31, 2016, 2015 and 2014 for: IAC, on a stand-alone basis; the combined guarantor subsidiaries of IAC; the combined non-guarantor subsidiaries of IAC; and IAC on a consolidated basis.

Balance sheet at December 31, 2016:



	IAC		Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Eliminations			IAC Consolidated
	(In thousands)
Cash and cash equivalents	$	552,699	$	—	$	776,488	$	—		$	1,329,187
Marketable securities	89,342		—		—		—			89,342
Accounts receivable, net	—		90,807		129,331		—			220,138
Other current assets	71,152		30,515		102,401		—			204,068
Intercompany receivables	—		735,108		1,047,757		(1,782,865		)	—
Property and equipment, net	4,350		178,806		123,092		—			306,248
Goodwill	—		521,740		1,402,312		—			1,924,052
Intangible assets, net	—		83,179		272,272		—			355,451
Investment in subsidiaries	3,659,570		557,802		—		(4,217,372		)	—
Other non-current assets	52,228		111,037		169,595		(115,473		)	217,387
Total assets	$	4,429,341	$	2,308,994	$	4,023,248	$	(6,115,710	)	$	4,645,873

Current portion of long-term debt	$	20,000	$	—	$	—	$	—		$	20,000
Accounts payable, trade	2,697		38,283		21,883		—			62,863
Other current liabilities	42,159		120,279		468,087		—			630,525
Long-term debt, net of current portion	405,991		—		1,176,493		—			1,582,484
Income taxes payable	—		3,470		30,274		(216		)	33,528
Intercompany liabilities	1,782,865		—		—		(1,782,865		)	—
Other long-term liabilities	306,407		22,714		59,112		(115,257		)	272,976
Redeemable noncontrolling interests	—		—		32,827		—			32,827
IAC shareholders' equity	1,869,222		2,124,248		2,093,124		(4,217,372		)	1,869,222
Noncontrolling interests	—		—		141,448		—			141,448
Total liabilities and shareholders' equity	$	4,429,341	$	2,308,994	$	4,023,248	$	(6,115,710	)	$	4,645,873

Balance sheet at December 31, 2015:



	IAC		Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Eliminations			IAC Consolidated
	(In thousands)
Cash and cash equivalents	$	1,073,053	$	—	$	408,394	$	—		$	1,481,447
Marketable securities	27,578		—		11,622		—			39,200
Accounts receivable, net	33		115,280		134,764		—			250,077
Other current assets	30,813		46,128		97,345		—			174,286
Intercompany receivables	—		637,324		963,146		(1,600,470		)	—
Property and equipment, net	4,432		198,890		99,495		—			302,817
Goodwill	—		776,569		1,468,795		—			2,245,364
Intangible assets, net	—		135,817		305,011		—			440,828
Investment in subsidiaries	3,128,765		466,601		—		(3,595,366		)	—
Other non-current assets	84,368		11,258		174,038		(14,992		)	254,672
Total assets	$	4,349,042	$	2,387,867	$	3,662,610	$	(5,210,828	)	$	5,188,691

Current portion of long-term debt	$	—	$	—	$	40,000	$	—		$	40,000
Accounts payable, trade	4,711		42,104		40,068		—			86,883
Other current liabilities	62,833		140,077		438,753		—			641,663
Long-term debt, net of current portion	550,083		—		1,176,871		—			1,726,954
Income taxes payable	152		3,435		30,105		—			33,692
Intercompany liabilities	1,600,470		—		—		(1,600,470		)	—
Other long-term liabilities	326,267		18,160		83,848		(14,992		)	413,283
Redeemable noncontrolling interests	—		—		30,391		—			30,391
IAC shareholders' equity	1,804,526		2,184,091		1,411,275		(3,595,366		)	1,804,526
Noncontrolling interests	—		—		411,299		—			411,299
Total liabilities and shareholders' equity	$	4,349,042	$	2,387,867	$	3,662,610	$	(5,210,828	)	$	5,188,691

Statement of operations for the year ended December 31, 2016:



	IAC			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			IAC Consolidated
	(In thousands)
Revenue	$	—		$	1,381,525		$	1,771,568		$	(13,211	)	$	3,139,882
Operating costs and expenses:
Cost of revenue (exclusive of depreciation shown separately below)	859			302,293			452,990			(412		)	755,730
Selling and marketing expense	2,353			689,933			565,906			(12,929		)	1,245,263
General and administrative expense	89,583			163,315			294,132			130			547,160
Product development expense	4,807			82,071			111,007			—			197,885
Depreciation	1,610			31,366			38,700			—			71,676
Amortization of intangibles	—			41,157			38,269			—			79,426
Goodwill impairment	—			253,245			22,122			—			275,367
Total operating costs and expenses	99,212			1,563,380			1,523,126			(13,211		)	3,172,507
Operating (loss) income	(99,212		)	(181,855		)	248,442			—			(32,625		)
Equity in earnings (losses) of unconsolidated affiliates	49,536			(23,573		)	—			(25,963		)	—
Interest expense	(26,876		)	—			(82,234		)	—			(109,110		)
Other (expense) income, net	(2,059		)	10,040			52,480			—			60,461
(Loss) earnings from continuing operations before income taxes	(78,611		)	(195,388		)	218,688			(25,963		)	(81,274		)
Income tax benefit (provision)	37,142			60,504			(32,712		)	—			64,934
(Loss) earnings from continuing operations	(41,469		)	(134,884		)	185,976			(25,963		)	(16,340		)
Earnings from discontinued operations, net of tax	189			—			9			(9		)	189
Net (loss) earnings	(41,280		)	(134,884		)	185,985			(25,972		)	(16,151		)
Net earnings attributable to noncontrolling interests	—			—			(25,129		)	—			(25,129		)
Net (loss) earnings attributable to IAC shareholders	$	(41,280	)	$	(134,884	)	$	160,856		$	(25,972	)	$	(41,280	)
Comprehensive (loss) income attributable to IAC shareholders	$	(76,431	)	$	(115,899	)	$	114,376		$	1,523		$	(76,431	)

Statement of operations for the year ended December 31, 2015:



	IAC			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			IAC Consolidated
	(In thousands)
Revenue	$	—		$	1,635,345		$	1,605,597		$	(10,009	)	$	3,230,933
Operating costs and expenses:
Cost of revenue (exclusive of depreciation shown separately below)	720			334,931			443,700			(1,190		)	778,161
Selling and marketing expense	3,210			819,354			531,872			(8,860		)	1,345,576
General and administrative expense	93,090			157,013			275,485			41			525,629
Product development expense	4,311			85,582			95,873			—			185,766
Depreciation	1,918			27,276			33,011			—			62,205
Amortization of intangibles	—			102,622			37,330			—			139,952
Goodwill impairment	—			14,056			—			—			14,056
Total operating costs and expenses	103,249			1,540,834			1,417,271			(10,009		)	3,051,345
Operating (loss) income	(103,249		)	94,511			188,326			—			179,588
Equity in earnings of unconsolidated affiliates	215,092			18,137			—			(233,229		)	—
Interest expense	(49,405		)	(6,130		)	(18,101		)	—			(73,636		)
Other (expense) income, net	(3,201		)	27,903			12,219			—			36,921
Earnings from continuing operations before income taxes	59,237			134,421			182,444			(233,229		)	142,873
Income tax benefit (provision)	60,218			(47,280		)	(42,454		)	—			(29,516		)
Earnings from continuing operations	119,455			87,141			139,990			(233,229		)	113,357
Earnings (loss) from discontinued operations, net of tax	17			—			(12		)	12			17
Net earnings	119,472			87,141			139,978			(233,217		)	113,374
Net loss attributable to noncontrolling interests	—			—			6,098			—			6,098
Net earnings attributable to IAC shareholders	$	119,472		$	87,141		$	146,076		$	(233,217	)	$	119,472
Comprehensive income attributable to IAC shareholders	$	55,069		$	83,664		$	80,248		$	(163,912	)	$	55,069

Statement of operations for the year ended December 31, 2014:



	IAC			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			IAC Consolidated
	(In thousands)
Revenue	$	—		$	1,637,345		$	1,484,041		$	(11,839	)	$	3,109,547
Operating costs and expenses:
Cost of revenue (exclusive of depreciation shown separately below)	998			414,255			447,704			(2,753		)	860,204
Selling and marketing expense	2,138			696,173			457,401			(8,303		)	1,147,409
General and administrative expense	105,221			127,122			211,222			45			443,610
Product development expense	6,496			76,482			78,365			(828		)	160,515
Depreciation	1,426			25,670			34,060			—			61,156
Amortization of intangibles	—			31,863			26,063			—			57,926
Total operating costs and expenses	116,279			1,371,565			1,254,815			(11,839		)	2,730,820
Operating (loss) income	(116,279		)	265,780			229,226			—			378,727
Equity in earnings of unconsolidated affiliates	257,714			3,369			—			(261,083		)	—
Interest expense	(51,988		)	(4,187		)	(139		)	—			(56,314		)
Other (expense) income, net	(1,444		)	6,381			(57,421		)	—			(52,484		)
Earnings from continuing operations before income taxes	88,003			271,343			171,666			(261,083		)	269,929
Income tax benefit (provision)	152,197			(104,606		)	(82,963		)	—			(35,372		)
Earnings from continuing operations	240,200			166,737			88,703			(261,083		)	234,557
Earnings from discontinued operations, net of tax	174,673			—			570			(570		)	174,673
Net earnings	414,873			166,737			89,273			(261,653		)	409,230
Net loss attributable to noncontrolling interests	—			—			5,643			—			5,643
Net earnings attributable to IAC shareholders	$	414,873		$	166,737		$	94,916		$	(261,653	)	$	414,873
Comprehensive income attributable to IAC shareholders	$	340,219		$	158,538		$	23,409		$	(181,947	)	$	340,219

Statement of cash flows for the year ended December 31, 2016:



	IAC			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			IAC Consolidated
	(In thousands)
Net cash (used in) provided by operating activities attributable to continuing operations	$	(84,770	)	$	203,563		$	173,584		$	—		$	292,377
Cash flows from investing activities attributable to continuing operations:
Acquisitions, net of cash acquired	—			—			(18,403		)	—			(18,403		)
Capital expenditures	(479		)	(19,317		)	(58,243		)	—			(78,039		)
Investments in time deposits	—			—			(87,500		)	—			(87,500		)
Proceeds from maturities of time deposits	—			—			87,500			—			87,500
Proceeds from maturities and sales of marketable debt securities	252,369			—			—			—			252,369
Purchases of marketable debt securities	(313,943		)	—			—			—			(313,943		)
Purchases of investments	—			—			(12,565		)	—			(12,565		)
Net proceeds from the sale of businesses and investments	73,843			1,779			96,606			—			172,228
Intercompany	(215,711		)	—			—			215,711			—
Other, net	126			643			10,446			—			11,215
Net cash (used in) provided by investing activities attributable to continuing operations	(203,795		)	(16,895		)	17,841			215,711			12,862
Cash flows from financing activities attributable to continuing operations:
Principal payments on Match Group Term Loan	—			—			(450,000		)	—			(450,000		)
Proceeds from Match Group 2016 Senior Notes offering	—			—			400,000			—			400,000
Principal payments on IAC debt, including redemptions and repurchases of Senior Notes	(126,409		)	—			—			—			(126,409		)
Debt issuance costs	—			—			(7,811		)	—			(7,811		)
Purchase of treasury stock	(308,948		)	—			—			—			(308,948		)
Issuance of IAC common stock pursuant to stock-based awards, net of withholding taxes	(895		)	—			—			—			(895		)
Issuance of Match Group common stock pursuant to stock-based awards, net of withholding taxes	—			—			9,548			—			9,548
Excess tax benefits from stock-based awards	22,084			—			29,680			—			51,764
Purchase of noncontrolling interests	(1,400		)	—			(1,340		)	—			(2,740		)
Acquisition-related contingent consideration payments	—			(351		)	(1,829		)	—			(2,180		)
Funds held in escrow for MyHammer tender offer	—			—			(10,548		)	—			(10,548		)
Intercompany	184,233			(184,233		)	215,711			(215,711		)	—
Other, net	(454		)	(2,084		)	(308		)	—			(2,846		)
Net cash (used in) provided by financing activities attributable to continuing operations	(231,789		)	(186,668		)	183,103			(215,711		)	(451,065		)
Total cash (used in) provided by continuing operations	(520,354		)	—			374,528			—			(145,826		)
Effect of exchange rate changes on cash and cash equivalents	—			—			(6,434		)	—			(6,434		)
Net (decrease) increase in cash and cash equivalents	(520,354		)	—			368,094			—			(152,260		)
Cash and cash equivalents at beginning of period	1,073,053			—			408,394			—			1,481,447
Cash and cash equivalents at end of period	$	552,699		$	—		$	776,488		$	—		$	1,329,187

Statement of cash flows for the year ended December 31, 2015:



	IAC			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			IAC Consolidated
	(In thousands)
Net cash (used in) provided by operating activities attributable to continuing operations	$	(139,227	)	$	258,582		$	230,050		$	349,405
Cash flows from investing activities attributable to continuing operations:
Acquisitions, net of cash acquired	—			(6,078		)	(611,324		)	(617,402		)
Capital expenditures	(1,332		)	(21,905		)	(38,812		)	(62,049		)
Proceeds from maturities and sales of marketable debt securities	218,462			—			—			218,462
Purchases of marketable debt securities	(93,134		)	—			—			(93,134		)
Purchases of investments	(6,978		)	—			(27,492		)	(34,470		)
Net proceeds from the sale of investments and business	1,277			—			8,136			9,413
Other, net	3,613			385			(7,539		)	(3,541		)
Net cash provided by (used in) investing activities attributable to continuing operations	121,908			(27,598		)	(677,031		)	(582,721		)
Cash flows from financing activities attributable to continuing operations:
Borrowings under Match Group Term Loan	—			—			788,000			788,000
Principal payment on Liberty Bond	—			(80,000		)	—			(80,000		)
Debt issuance costs	(1,876		)	—			(17,174		)	(19,050		)
Fees and expenses related to note exchange	—			—			(6,954		)	(6,954		)
Proceeds from Match Group IPO, net of fees and expenses	—			—			428,789			428,789
Purchase of treasury stock	(200,000		)	—			—			(200,000		)
Dividends	(113,196		)	—			—			(113,196		)
Issuance of IAC common stock pursuant to stock-based awards, net of withholding taxes	(38,418		)	—			—			(38,418		)
Repurchase of stock-based awards	—			—			(23,431		)	(23,431		)
Excess tax benefits from stock-based awards	18,034			—			38,384			56,418
Purchase of noncontrolling interests	—			—			(32,207		)	(32,207		)
Acquisition-related contingent consideration payments	—			(240		)	(5,510		)	(5,750		)
Intercompany	683,571			(150,744		)	(532,827		)	—
Other, net	(19,834		)	—			441			(19,393		)
Net cash provided by (used in) financing activities attributable to continuing operations	328,281			(230,984		)	637,511			734,808
Total cash provided by continuing operations	310,962			—			190,530			501,492
Total cash used in discontinued operations	(140		)	—			(12		)	(152		)
Effect of exchange rate changes on cash and cash equivalents	—			—			(10,298		)	(10,298		)
Net increase in cash and cash equivalents	310,822			—			180,220			491,042
Cash and cash equivalents at beginning of period	762,231			—			228,174			990,405
Cash and cash equivalents at end of period	$	1,073,053		$	—		$	408,394		$	1,481,447

Statement of cash flows for the year ended December 31, 2014:



	IAC			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			IAC Consolidated
	(In thousands)
Net cash (used in) provided by operating activities attributable to continuing operations	$	(109,745	)	$	329,671		$	204,122		$	424,048
Cash flows from investing activities attributable to continuing operations:
Acquisitions, net of cash acquired	—			(97,463		)	(161,928		)	(259,391		)
Capital expenditures	(1,843		)	(26,640		)	(28,750		)	(57,233		)
Proceeds from maturities and sales of marketable debt securities	21,644			—			—			21,644
Purchases of marketable debt securities	(175,826		)	—			—			(175,826		)
Purchases of investments	(4,800		)	(2,087		)	(17,447		)	(24,334		)
Net proceeds from the sale of investments and assets	—			—			58,388			58,388
Other, net	(2,000		)	11			(1,053		)	(3,042		)
Net cash used in investing activities attributable to continuing operations	(162,825		)	(126,179		)	(150,790		)	(439,794		)
Cash flows from financing activities attributable to continuing operations:
Debt issuance costs	(383		)	—			—			(383		)
Dividends	(97,338		)	—			—			(97,338		)
Issuance of IAC common stock pursuant to stock-based awards, net of withholding taxes	1,609			—			—			1,609
Excess tax benefits from stock-based awards	29,186			—			15,771			44,957
Purchase of noncontrolling interests	—			—			(33,165		)	(33,165		)
Acquisition-related contingent consideration payments	—			(406		)	(7,703		)	(8,109		)
Intercompany	321,192			(201,802		)	(119,390		)	—
Other, net	—			(1,310		)	12,759			11,449
Net cash provided by (used in) financing activities attributable to continuing operations	254,266			(203,518		)	(131,728		)	(80,980		)
Total cash used in continuing operations	(18,304		)	(26		)	(78,396		)	(96,726		)
Total cash used in discontinued operations	(116		)	—			(29		)	(145		)
Effect of exchange rate changes on cash and cash equivalents	—			26			(13,194		)	(13,168		)
Net decrease in cash and cash equivalents	(18,420		)	—			(91,619		)	(110,039		)
Cash and cash equivalents at beginning of period	780,651			—			319,793			1,100,444
Cash and cash equivalents at end of period	$	762,231		$	—		$	228,174		$	990,405

QUARTERLY RESULTS (UNAUDITED)

12 Months Ended

Dec. 31, 2016

Quarterly Financial Information Disclosure [Abstract]

QUARTERLY RESULTS (UNAUDITED)



	Quarter Ended March 31^(a)		Quarter Ended June 30^(b)			Quarter Ended September 30		Quarter Ended December 31^(a)
	(In thousands, except per share data)
Year Ended December 31, 2016
Revenue	$	819,179	$	745,439		$	764,102	$	811,162
Cost of revenue	193,734		170,397			179,131		212,468
Operating income (loss)	21,417		(252,446		)	85,584		112,820
Earnings (loss) from continuing operations	7,934		(190,542		)	52,340		113,928
Net earnings (loss)	7,934		(190,542		)	52,340		114,117
Net earnings (loss) attributable to IAC shareholders	8,282		(194,775		)	43,162		102,051
Per share information attributable to IAC shareholders:
Basic earnings (loss) per share from continuing operations^(d)	$	0.10	$	(2.45	)	$	0.54	$	1.29
Diluted earnings (loss) per share from continuing operations^(d)	$	0.09	$	(2.45	)	$	0.49	$	1.18
Basic earnings (loss) per share^(d)	$	0.10	$	(2.45	)	$	0.54	$	1.29
Diluted earnings (loss) per share^(d)	$	0.09	$	(2.45	)	$	0.49	$	1.18


	Quarter Ended March 31		Quarter Ended June 30			Quarter Ended September 30		Quarter Ended December 31^(c)
	(In thousands, except per share data)
Year Ended December 31, 2015
Revenue	$	772,512	$	771,132		$	838,561	$	848,728
Cost of revenue	186,737		177,963			199,377		214,084
Operating income (loss)	35,119		62,769			87,130		(5,430		)
Earnings (loss) from continuing operations	21,863		57,885			65,026		(31,417		)
Net earnings (loss)	21,988		57,732			65,043		(31,389		)
Net earnings (loss) attributable to IAC shareholders	26,405		59,305			65,611		(31,849		)
Per share information attributable to IAC shareholders:
Basic earnings (loss) per share from continuing operations^(d)	$	0.31	$	0.72		$	0.79	$	(0.38	)
Diluted earnings (loss) per share from continuing operations^(d)	$	0.30	$	0.68		$	0.74	$	(0.38	)
Basic earnings (loss) per share^(d)	$	0.32	$	0.72		$	0.79	$	(0.38	)
Diluted earnings (loss) per share^(d)	$	0.30	$	0.68		$	0.74	$	(0.38	)

_______________________________________________________________________________


(a)	The first quarter and fourth quarter of 2016 include after-tax gains of $11.9 million and $37.5 million related to the sale of PriceRunner and ShoeBuy, respectively.


(b)	The second quarter of 2016 includes after-tax impairment charges related to goodwill and indefinite-lived intangible assets of $183.5 million and $7.2 million, respectively.


(c)	The fourth quarter of 2015 includes after-tax impairment charges related to indefinite-lived intangible assets and goodwill of $55.3 million and $14.1 million, respectively.


(d)	Quarterly per share amounts may not add to the related annual per share amount because of differences in the average common shares outstanding during each period.

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS

12 Months Ended

Dec. 31, 2016

Valuation and Qualifying Accounts [Abstract]

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS

Schedule II

IAC/INTERACTIVECORP AND SUBSIDIARIES

VALUATION AND QUALIFYING ACCOUNTS



Description	Balance at Beginning of Period		Charges to Earnings				Charges to Other Accounts				Deductions				Balance at End of Period
	(In thousands)
2016
Allowance for doubtful accounts and revenue reserves	$	16,528	$	19,070		^(a)	$	(695	)		$	(18,498	)	^(d)	$	16,405
Sales returns accrual	828		14,998				(962		)		(14,784		)		80
Deferred tax valuation allowance	90,482		(837		)	^(b)	(1,475		)	^(c)	—				88,170
Other reserves	2,801														2,822
2015
Allowance for doubtful accounts and revenue reserves	$	12,437	$	17,912		^(a)	$	(536	)		$	(13,285	)	^(d)	$	16,528
Sales returns accrual	1,119		17,569				—				(17,860		)		828
Deferred tax valuation allowance	98,350		(6,072		)	^(e)	(1,796		)	^(f)	—				90,482
Other reserves	2,204														2,801
2014
Allowance for doubtful accounts and revenue reserves	$	8,540	$	15,226		^(a)	$	(116	)		$	(11,213	)	^(d)	$	12,437
Sales returns accrual	1,208		19,743				—				(19,832		)		1,119
Deferred tax valuation allowance	62,353		35,119			^(g)	878			^(h)	—				98,350
Other reserves	2,518														2,204

_________________________________________________________


(a)	Additions to the allowance for doubtful accounts are charged to expense. Additions to the revenue reserves are charged against revenue.


(b)	Amount is primarily related to other-than-temporary impairment charges for certain cost method investments and an increase in federal capital and net operating losses, partially offset by a decrease in state net operating losses, foreign tax credits, and foreign net operating losses.


(c)	Amount is primarily related to the realization of previously unbenefited unrealized losses on available-for-sale marketable equity securities included in accumulated other comprehensive income and currency translation adjustments on foreign net operating losses.


(d)	Write-off of fully reserved accounts receivable.


(e)	Amount is primarily related to the release of a valuation allowance on the other-than-temporary impairment charges for certain cost method investments, partially offset by an increase in federal, foreign and state net operating and capital losses.


(f)	Amount is primarily related to a net reduction in unbenefited unrealized losses on available-for-sale marketable equity securities included in accumulated other comprehensive income and currency translation adjustments on foreign net operating losses.


(g)	Amount is primarily related to other-than-temporary impairment charges for certain cost method investments and an increase in federal net operating losses, foreign tax credits, and state tax credits.


(h)	Amount is primarily related to unbenefited unrealized losses on long-term marketable equity securities included in accumulated other comprehensive income, partially offset by currency translation adjustments on foreign net operating losses.

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)

12 Months Ended

Dec. 31, 2016

Accounting Policies [Abstract]

Basis of Presentation

The Company prepares its consolidated financial statements in accordance with U.S. generally accepted accounting principles ("GAAP").

Basis of Consolidation

Accounting for Investments

Accounting Estimates

Revenue Recognition

Match Group

HomeAdvisor

Video

Applications

Publishing

Other

Cash and Cash Equivalents

Marketable Securities

Certain Risks and Concentrations

Accounts Receivable

Property and Equipment



Asset Category	Estimated Useful Lives
Buildings and leasehold improvements	3 to 39 Years
Computer equipment and capitalized software	2 to 3 Years
Furniture and other equipment	3 to 12 Years

Business Combinations

Goodwill and Indefinite-Lived Intangible Assets


•	Match Group's October 1, 2016 market capitalization of $4.8 billion exceeded its carrying value by more than 970% and Match Group's strong operating performance.

•


•	ShoeBuy's expected sales price was significantly in excess of its October 1, 2016 carrying value; which was confirmed by the sales price realized in its sale on December 30, 2016, which resulted in a pre-tax gain of $37.5 million.

At October 1, 2016, the fair value of each of the Company's reporting units with goodwill exceeded its carrying value by more than 20%.

Long-Lived Assets and Intangible Assets with Definite Lives

Fair Value Measurements


•	Level 1: Observable inputs obtained from independent sources, such as quoted prices for identical assets and liabilities in active markets.

•

Traffic Acquisition Costs

Advertising Costs

Legal Costs

Legal costs are expensed as incurred.

Income Taxes

Earnings Per Share

Foreign Currency Translation and Transaction Gains and Losses

Translation gains and losses relating to foreign entities that are liquidated or substantially liquidated are reclassified out of accumulated other comprehensive income (loss) into earnings.

Stock-Based Compensation

Redeemable Noncontrolling Interests

Noncontrolling Interests

Recent Accounting Pronouncements

Accounting Pronouncements not yet adopted by the Company



Excess tax benefit (deficiency) of equity awards to employees upon exercise of stock options and the vesting of restricted stock units:	Accounting under current GAAP:	Accounting following adoption of ASU No. 2016-09:
Statement of operations	Treated as an increase (or decrease) to additional paid-in capital when realized (i.e., reduction of income taxes payable)	Included in the determination of the income tax provision or benefit upon option exercise or share vesting
Statement of cash flows	Treated as a financing cash flow	Treated as an operating cash flow
Calculation of fully diluted shares for the determination of earnings per share	Included as a component of the assumed proceeds in applying the treasury stock method	Excluded from the assumed proceeds in applying the treasury stock method



	Reported results under current GAAP			Pro forma results assuming ASU No. 2016-09 had been in effect on January 1, 2016
	(In thousands, except per share data)
Net (loss) earnings	$	(16,151	)	$	33,255
Net earnings attributable to noncontrolling interests	(25,129		)	(30,024		)
Net (loss) earnings attributable to IAC shareholders	(41,280		)	3,231
Cash flows provided by operating activities attributable to continuing operations	292,377			344,141
Cash flows used in financing activities attributable to continuing operations	(451,065		)	(502,829		)
Basic (loss) earnings per share from continuing operations	$	(0.52	)	$	0.10
Fully diluted loss per share from continuing operations	$	(0.52	)	$	(0.19	)

Accounting Pronouncement adopted by the Company

Reclassifications

Certain prior year amounts have been reclassified to conform to the current year presentation.

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2016

Accounting Policies [Abstract]

Schedule of Estimated Useful Lives of Property and Equipment



Asset Category	Estimated Useful Lives
Buildings and leasehold improvements	3 to 39 Years
Computer equipment and capitalized software	2 to 3 Years
Furniture and other equipment	3 to 12 Years



	December 31,
	2016			2015
	(In thousands)
Property and equipment, net:
Buildings and leasehold improvements	$	247,451		$	235,545
Computer equipment and capitalized software	259,464			239,309
Furniture and other equipment	93,002			88,664
Projects in progress	13,048			18,676
Land	5,117			5,117
	618,082			587,311
Accumulated depreciation and amortization	(311,834		)	(284,494		)
Property and equipment, net	$	306,248		$	302,817

Schedule of Effect of New Accounting Pronouncement



Excess tax benefit (deficiency) of equity awards to employees upon exercise of stock options and the vesting of restricted stock units:	Accounting under current GAAP:	Accounting following adoption of ASU No. 2016-09:
Statement of operations	Treated as an increase (or decrease) to additional paid-in capital when realized (i.e., reduction of income taxes payable)	Included in the determination of the income tax provision or benefit upon option exercise or share vesting
Statement of cash flows	Treated as a financing cash flow	Treated as an operating cash flow
Calculation of fully diluted shares for the determination of earnings per share	Included as a component of the assumed proceeds in applying the treasury stock method	Excluded from the assumed proceeds in applying the treasury stock method



	Reported results under current GAAP			Pro forma results assuming ASU No. 2016-09 had been in effect on January 1, 2016
	(In thousands, except per share data)
Net (loss) earnings	$	(16,151	)	$	33,255
Net earnings attributable to noncontrolling interests	(25,129		)	(30,024		)
Net (loss) earnings attributable to IAC shareholders	(41,280		)	3,231
Cash flows provided by operating activities attributable to continuing operations	292,377			344,141
Cash flows used in financing activities attributable to continuing operations	(451,065		)	(502,829		)
Basic (loss) earnings per share from continuing operations	$	(0.52	)	$	0.10
Fully diluted loss per share from continuing operations	$	(0.52	)	$	(0.19	)

- Definition

Tabular disclosure of changes in accounting principles, including adoption of new accounting pronouncements, that describes the new methods, amount and effects on financial statement line items.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64853466&loc=d3e22580-107794

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Direct Effects of a Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=66092750

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Indirect Effects of a Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=6515603

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section 45
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=68064558&loc=d3e765-108305

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Accounting Change
-URI http://asc.fasb.org/extlink&oid=6503790

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=64853466&loc=d3e22499-107794

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.10-01.(b)(6))
-URI http://asc.fasb.org/extlink&oid=27015980&loc=d3e46468-122699

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64853466&loc=d3e22583-107794

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=6507316

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=68064558&loc=d3e725-108305

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Retrospective Application
-URI http://asc.fasb.org/extlink&oid=6523989

+ Details

INCOME TAXES (Tables)

12 Months Ended

Dec. 31, 2016

Income Tax Disclosure [Abstract]

Schedule of Income Before Income Taxes

U.S. and foreign (loss) earnings from continuing operations before income taxes are as follows:



	Years Ended December 31,
	2016			2015		2014
	(In thousands)
U.S.	$	(248,622	)	$	79,639	$	174,792
Foreign	167,348			63,234		95,137
Total	$	(81,274	)	$	142,873	$	269,929

Schedule of Components of Income Tax Expense (Benefit)

The components of the (benefit) provision for income taxes attributable to continuing operations are as follows:



	Years Ended December 31,
	2016			2015			2014
	(In thousands)
Current income tax provision (benefit):
Federal	$	23,343		$	67,505		$	(45,842	)
State	3,662			7,785			(14,787		)
Foreign	27,242			14,012			19,132
Current income tax provision (benefit)	54,247			89,302			(41,497		)
Deferred income tax (benefit) provision:
Federal	(100,798		)	(50,254		)	74,255
State	(9,518		)	(3,727		)	3,090
Foreign	(8,865		)	(5,805		)	(476		)
Deferred income tax (benefit) provision	(119,181		)	(59,786		)	76,869
Income tax (benefit) provision	$	(64,934	)	$	29,516		$	35,372

Schedule of Income Taxes (Payable) Receivable and Deferred Tax (Liabilities) Assets

Income taxes receivable (payable) and deferred tax assets (liabilities) are included in the following captions in the accompanying consolidated balance sheet at December 31, 2016 and 2015:



	December 31,
	2016			2015
	(In thousands)
Income taxes receivable (payable):
Other current assets	$	41,352		$	26,793
Other non-current assets	1,615			1,564
Accrued expenses and other current liabilities	(5,788		)	(33,029		)
Income taxes payable	(33,528		)	(33,692		)
Net income taxes receivable (payable)	$	3,651		$	(38,364	)

Deferred tax assets (liabilities):
Other non-current assets	$	2,511		$	1,970
Deferred income taxes	(228,798		)	(348,773		)
Net deferred tax liabilities	$	(226,287	)	$	(346,803	)

Schedule of Deferred Tax Assets and Liabilities



	December 31,
	2016			2015
	(In thousands)
Deferred tax assets:
Accrued expenses	$	40,273		$	36,418
Net operating loss carryforwards	63,948			68,048
Tax credit carryforwards	11,570			13,753
Stock-based compensation	87,914			76,285
Cost method investments	9,955			6,251
Equity method investments	17,455			17,105
Intangible and other assets	13,708			—
Other	20,089			16,057
Total deferred tax assets	264,912			233,917
Less valuation allowance	(88,170		)	(90,482		)
Net deferred tax assets	176,742			143,435
Deferred tax liabilities:
Investment in subsidiaries	(385,474		)	(382,254		)
Intangible and other assets	—			(88,846		)
Other	(17,555		)	(19,138		)
Total deferred tax liabilities	(403,029		)	(490,238		)
Net deferred tax liabilities	$	(226,287	)	$	(346,803	)

Schedule of Effective Income Tax Rate Reconciliation



	Years Ended December 31,
	2016			2015			2014
	(In thousands)
Income tax (benefit) provision at the federal statutory rate of 35%	$	(28,446	)	$	50,006		$	94,475
Change in tax reserves, net	(828		)	(2,928		)	(86,151		)
Foreign income taxed at a different statutory tax rate	(20,277		)	(6,077		)	(10,456		)
State income taxes, net of effect of federal tax benefit	(3,880		)	2,208			7,240
Realization of certain deferred tax assets	—			(22,440		)	—
Non-taxable contingent consideration fair value adjustments	1,020			(4,517		)	(4,439		)
Non-taxable foreign currency exchange gains	(6,837		)	(4,306		)	—
Unbenefited losses	1,730			4,264			5,433
Non-deductible goodwill associated with the sale of Urbanspoon	—			—			6,982
Non-taxable sale and non-deductible goodwill associated with ShoeBuy	(13,142		)	4,920			—
Goodwill impairment of Publishing	10,649			—			—
Non-deductible impairments for certain cost method investments	3,489			2,341			23,310
Deferred tax adjustment for enacted changes in tax laws and rates	(4,594		)	—			—
Other, net	(3,818		)	6,045			(1,022		)
Income tax (benefit) provision	$	(64,934	)	$	29,516		$	35,372

Schedule of Income Tax Contingencies

A reconciliation of the beginning and ending amount of unrecognized tax benefits, including penalties but excluding interest, is as follows:



	December 31,
	2016			2015			2014
	(In thousands)
Balance at January 1	$	40,808		$	30,386		$	275,813
Additions based on tax positions related to the current year	2,033			4,227			2,159
Additions for tax positions of prior years	2,676			14,467			1,622
Reductions for tax positions of prior years	(743		)	(1,556		)	(5,611		)
Settlements	(5,107		)	—			(5,092		)
Expiration of applicable statutes of limitations	(1,295		)	(6,716		)	(238,505		)
Balance at December 31	$	38,372		$	40,808		$	30,386

BUSINESS COMBINATION (Tables)

12 Months Ended

Dec. 31, 2016

Business Combinations [Abstract]

Schedule of Estimated Fair Values of Assets Acquired and Liabilities Assumed

The table below summarizes the fair values of the assets acquired and liabilities assumed at the date of acquisition:



	(In thousands)
Cash and cash equivalents	$	4,626
Other current assets	4,460
Computer and other equipment	2,990
Goodwill	488,644
Intangible assets	84,100
Other non-current assets	1,073
Total assets	585,893
Current liabilities	(6,418		)
Other long-term liabilities	(5,325		)
Net assets acquired	$	574,150

Schedule of Intangible Assets Acquired as Part of Business Combination

Intangible assets are as follows:



	(In thousands)		Weighted-Average Useful Life (Years)
Indefinite-lived trade name	$	66,300	Indefinite
Customer relationships	10,100		Less than 1
New registrants	3,100		Less than 1
Non-compete agreement	3,000		5
Developed technology	1,600		2
Total intangible assets acquired	$	84,100

Schedule of Unaudited Pro Forma Financial Information



	Years Ended December 31,
	2015		2014
	(In thousands, except per share data)
Revenue	$	3,309,287	$	3,157,893
Net earnings attributable to IAC shareholders	$	155,599	$	413,299
Basic earnings per share attributable to IAC shareholders	$	1.88	$	4.96
Diluted earnings per share attributable to IAC shareholders	$	1.76	$	4.67

GOODWILL AND INTANGIBLE ASSETS (Tables)

12 Months Ended

Dec. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill and Intangible Assets, Net

Goodwill and intangible assets, net are as follows:



	December 31,
	2016		2015
	(In thousands)
Goodwill	$	1,924,052	$	2,245,364
Intangible assets with indefinite lives	320,645		380,137
Intangible assets with definite lives, net	34,806		60,691
Total goodwill and intangible assets, net	$	2,279,503	$	2,686,192

Schedule of Goodwill by Reporting Unit

The following table presents the balance of goodwill by reportable segment, including the changes in the carrying value of goodwill, for the year ended December 31, 2016:



	Balance at December 31, 2015		Additions		(Deductions)			Impairment			Foreign Exchange Translation			Balance at December 31, 2016
	(In thousands)
Match Group	$	1,293,109	$	603	$	(3,063	)	$	—		$	(9,689	)	$	1,280,960
HomeAdvisor	150,251		21,985		—			—			(1,625		)	170,611
Video	15,590		9,649		—			—			—			25,239
Applications	447,242		—		—			—			—			447,242
Publishing	277,192		—		(1,968		)	(275,367		)	143			—
Other	61,980		—		(62,780		)	—			800			—
Total	$	2,245,364	$	32,237	$	(67,811	)	$	(275,367	)	$	(10,371	)	$	1,924,052

The following table presents the balance of goodwill by reportable segment, including the changes in the carrying value of goodwill, for the year ended December 31, 2015:



	Balance at December 31, 2014		Additions		Impairment			Foreign Exchange Translation			Allocation of IAC's former Search & Applications Segment Goodwill Based on Relative Fair Value			Balance at December 31, 2015
	(In thousands)
Search & Applications ^(a)	$	774,822	$	1,450	$	—		$	(1,230	)	$	(775,042	)	$	—

Match Group	791,474		547,910		—			(46,275		)	—			1,293,109
HomeAdvisor	151,321		—		—			(1,070		)	—			150,251
Video	15,590		—		—			—			—			15,590
Applications	—		—		—			—			447,242			447,242
Publishing	—		3,504		—			963			272,725			277,192
Other	21,719		—		(14,056		)	(758		)	55,075			61,980
Total	$	1,754,926	$	552,864	$	(14,056	)	$	(48,370	)	$	—		$	2,245,364

________________________

(a)

Schedule of Intangible Assets with Definite Lives



	December 31, 2016
	Gross Carrying Amount		Accumulated Amortization			Net		Weighted-Average Useful Life (Years)
	(In thousands)
Trade names	$	63,855	$	(52,927	)	$	10,928	1.8
Technology	38,602		(27,667		)	10,935		3.4
Content	14,802		(8,965		)	5,837		4.3
Customer lists	12,485		(9,997		)	2,488		3.7
Advertiser and supplier relationships and other	7,230		(2,612		)	4,618		4.5
Total	$	136,974	$	(102,168	)	$	34,806	2.8



	December 31, 2015
	Gross Carrying Amount		Accumulated Amortization			Net		Weighted-Average Useful Life (Years)
	(In thousands)
Trade names	$	32,123	$	(26,268	)	$	5,855	2.5
Technology	55,487		(37,012		)	18,475		3.2
Content	62,082		(48,937		)	13,145		4.1
Customer lists	28,836		(13,078		)	15,758		2.1
Advertiser and supplier relationships and other	15,709		(8,251		)	7,458		4.2
Total	$	194,237	$	(133,546	)	$	60,691	3.3

Schedule of Expected Amortization of Intangible Assets

At December 31, 2016, amortization of intangible assets with definite lives for each of the next five years is estimated to be as follows:



Years Ending December 31,	(In thousands)
2017	$	23,815
2018	6,922
2019	2,866
2020	1,203
Total	$	34,806

MARKETABLE SECURITIES (Tables)

12 Months Ended

Dec. 31, 2016

Marketable Securities [Abstract]

Schedule of Current Available-for-sale Marketable Securities

At December 31, 2015, current available-for-sale marketable securities are as follows:



	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(In thousands)
Corporate debt securities	$	27,765	$	—	$	(187	)	$	27,578
Equity security	8,659		2,963		—			11,622
Total marketable securities	$	36,424	$	2,963	$	(187	)	$	39,200

At December 31, 2016, current available-for-sale marketable securities are as follows:



	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(In thousands)
Commercial paper	$	49,797	$	—	$	—		$	49,797
Treasury discount notes	34,978		—		(4		)	34,974
Corporate debt securities	4,575		2		(6		)	4,571
Total debt securities	89,350		2		(10		)	89,342
Total marketable securities	$	89,350	$	2	$	(10	)	$	89,342

Schedule of Proceeds from Maturities and Sales of Current Available-for-sale Marketable Securities

The following table presents the proceeds from maturities and sales of current and non-current available-for-sale marketable securities and the related gross realized gains:



	December 31,
	2016		2015		2014
	(In thousands)
Proceeds from maturities and sales of available-for-sale marketable securities	$	279,485	$	218,976	$	25,223
Gross realized gains	3,556		443		3,362

- Definition

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

+ References + Details

LONG-TERM INVESTMENTS (Tables)

12 Months Ended

Dec. 31, 2016

Long-term Investments [Abstract]

Schedule of Long-term Investments

Long-term investments consist of:



	December 31,
	2016		2015
	(In thousands)
Cost method investments	$	116,133	$	114,532
Equity method investments	6,677		11,262
Marketable equity security	—		7,542
Auction rate security	—		4,050
Total long-term investments	$	122,810	$	137,386

FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS (Tables)

12 Months Ended

Dec. 31, 2016

Fair Value Disclosures [Abstract]

Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following tables present the Company's financial instruments that are measured at fair value on a recurring basis:



	December 31, 2016
	Quoted Market Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)			Total Fair Value Measurements
	(In thousands)
Assets:
Cash equivalents:
Money market funds	$	667,662	$	—	$	—		$	667,662
Time deposits	—		79,000		—			79,000
Treasury discount notes	24,991		—		—			24,991
Commercial paper	—		123,640		—			123,640
Marketable securities:
Commercial paper	—		49,797		—			49,797
Treasury discount notes	34,974		—		—			34,974
Corporate debt securities	—		4,571		—			4,571
Total	$	727,627	$	257,008	$	—		$	984,635

Liabilities:
Contingent consideration arrangements	$	—	$	—	$	(33,871	)	$	(33,871	)



	December 31, 2015
	Quoted Market Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)			Total Fair Value Measurements
	(In thousands)
Assets:
Cash equivalents:
Money market funds	$	601,848	$	—	$	—		$	601,848
Time deposits	—		125,038		—			125,038
Commercial paper	—		302,418		—			302,418
Marketable securities:
Corporate debt securities	—		27,578		—			27,578
Equity security	11,622		—		—			11,622
Long-term investments:
Auction rate security	—		—		4,050			4,050
Marketable equity security	7,542		—		—			7,542
Total	$	621,012	$	455,034	$	4,050		$	1,080,096

Liabilities:
Contingent consideration arrangements	$	—	$	—	$	(33,873	)	$	(33,873	)

Schedule of Changes in Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following table presents the changes in the Company's financial instruments that are measured at fair value on a recurring basis using significant unobservable inputs (Level 3):



	For the Year Ended
	December 31, 2016						December 31, 2015
	Auction Rate Security			Contingent Consideration Arrangements			Auction Rate Security			Contingent Consideration Arrangements
	(In thousands)
Balance at January 1	$	4,050		$	(33,873	)	$	6,070		$	(30,140	)
Total net gains (losses):
Included in earnings:
Fair value adjustments	—			(2,555		)	—			15,461
Foreign currency exchange gains	—			—			—			626
Included in other comprehensive income (loss)	5,950			(1,571		)	(2,020		)	1,872
Fair value at date of acquisition	—			(185		)	—			(27,442		)
Settlements	—			2,180			—			5,750
Proceeds from sale	(10,000		)	—			—			—
Other	—			2,133			—			—
Balance at December 31	$	—		$	(33,871	)	$	4,050		$	(33,873	)

Carrying Value and Fair Value of Financial Instruments

The following table presents the carrying value and the fair value of financial instruments measured at fair value only for disclosure purposes:



	December 31, 2016						December 31, 2015
	Carrying Value			Fair Value			Carrying Value			Fair Value
	(In thousands)
Current portion of long-term debt	$	(20,000	)	$	(20,311	)	$	(40,000	)	$	(39,850	)
Long-term debt, net of current portion	(1,582,484		)	(1,657,861		)	(1,726,954		)	(1,761,601		)

LONG-TERM DEBT (Tables)

12 Months Ended

Dec. 31, 2016

Debt Disclosure [Abstract]

Schedule of Long-term Debt

Long-term debt consists of:



	December 31,
	2016		2015
	(In thousands)
Match Group Debt:
6.75% Senior Notes due December 15, 2022 (the "2015 Match Group Senior Notes"); interest payable each June 15 and December 15, which commenced on June 15, 2016	$	445,172	$	445,172
6.375% Senior Notes due June 1, 2024 (the "2016 Match Group Senior Notes"); interest payable each June 1 and December 1, which commenced on December 1, 2016	400,000		—
Match Group Term Loan due November 16, 2022 ^(a)	350,000		800,000
Total Match Group long-term debt	1,195,172		1,245,172
Less: Current maturities of Match Group long-term debt	—		40,000
Less: Unamortized original issue discount and original issue premium, net	5,245		11,691
Less: Unamortized debt issuance costs	13,434		16,610
Total Match Group debt, net of current maturities	1,176,493		1,176,871

IAC Debt:
4.875% Senior Notes due November 30, 2018 (the "2013 Senior Notes"); interest payable each May 30 and November 30, which commenced on May 30, 2014	390,214		500,000
4.75% Senior Notes due December 15, 2022 (the "2012 Senior Notes"); interest payable each June 15 and December 15, which commenced on June 15, 2013	38,109		54,732
Total IAC long-term debt	428,323		554,732
Less: Current portion of IAC long-term debt	20,000		—
Less: Unamortized debt issuance costs	2,332		4,649
Total IAC debt, net of current portion	405,991		550,083

Total long-term debt, net of current portion	$	1,582,484	$	1,726,954

________________________


(a)	The Match Group Term Loan matures on November 16, 2022; provided that, if any of the 2015 Match Group Senior Notes remain outstanding on the date that is 91 days prior to the maturity date of the 2015 Match Group Senior Notes, the Match Group Term Loan maturity date shall be the date that is 91 days prior to the maturity date of the 2015 Match Group Senior Notes.

Schedule of Debt Instrument Redemption

Thereafter, these notes may be redeemed at the redemption prices set forth below, together with accrued and unpaid interest thereon to the applicable redemption date, if redeemed during the twelve-month period beginning on June 1 of the years indicated below:



Year	Percentage
2019	104.781	%
2020	103.188	%
2021	101.594	%
2022 and thereafter	100.000	%

Thereafter, the 2015 Match Group Senior Notes may be redeemed at the redemption prices set forth below, together with accrued and unpaid interest thereon to the applicable redemption date, if redeemed during the twelve-month period beginning on December 15 of the years indicated below:



Year	Percentage
2017	102.375	%
2018	101.583	%
2019	100.792	%
2020 and thereafter	100.000	%



Year	Percentage
2016	101.625	%
2017 and thereafter	100.000	%

Schedule of Aggregate Contractual Maturities of Long-term Debt

Long-term debt maturities:



Years Ending December 31,	(In thousands)
2018	$	390,214
2022	833,281
2024	400,000
Total	1,623,495
Less: Current portion of long-term debt	20,000
Less: Unamortized original issue discount and original issue premium, net	5,245
Less: Unamortized debt issuance costs	15,766
Total long term debt, net of current portion	$	1,582,484

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e),(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21538-112644

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28541-108399

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21521-112644

+ Details

ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)

12 Months Ended

Dec. 31, 2016

Equity [Abstract]

Schedule of Accumulated Other Comprehensive Loss

The following tables present the components of accumulated other comprehensive (loss) income and items reclassified out of accumulated other comprehensive loss into earnings:



	Year Ended December 31, 2016
	Foreign Currency Translation Adjustment			Unrealized Gains On Available-For-Sale Securities				Accumulated Other Comprehensive (Loss) Income
	(In thousands)
Balance at January 1	$	(154,645	)	$	2,542			$	(152,103	)
Other comprehensive (loss) income before reclassifications, net of tax benefit of $0.7 million related to unrealized losses on available-for-sale securities	(46,943		)	4,855				(42,088		)
Amounts reclassified to earnings	9,850			(2,913		)	^(a)	6,937
Net current period other comprehensive (loss) income	(37,093		)	1,942				(35,151		)
Reallocation of accumulated other comprehensive loss (income) related to the noncontrolling interests created in the Match Group IPO	21,589			(458		)		21,131
Balance at December 31	$	(170,149	)	$	4,026			$	(166,123	)

_________________________


(a)	Amount is net of a tax provision of $0.2 million.



	Year Ended December 31, 2015
	Foreign Currency Translation Adjustment			Unrealized (Losses) Gain On Available-For-Sale Securities				Accumulated Other Comprehensive Loss
	(In thousands)
Balance at January 1	$	(86,848	)	$	(852	)		$	(87,700	)
Other comprehensive (loss) income before reclassifications, net of tax provision of $0.6 million related to unrealized gains on available-for-sale securities	(65,606		)	3,537				(62,069		)
Amounts reclassified to earnings	(2,191		)	(143		)	^(b)	(2,334		)
Net current period other comprehensive (loss) income	(67,797		)	3,394				(64,403		)
Balance at December 31	$	(154,645	)	$	2,542			$	(152,103	)

_________________________

(b) Amount is net of a tax provision of $0.1 million.

(LOSS) EARNINGS PER SHARE (Tables)

12 Months Ended

Dec. 31, 2016

Earnings Per Share [Abstract]

Computation of Basic and Diluted Earnings per Share

The following table sets forth the computation of basic and diluted (loss) earnings per share attributable to IAC shareholders.



	Years Ended December 31,
	2016						2015					2014
	Basic			Diluted			Basic		Diluted			Basic		Diluted
	(In thousands, except per share data)
Numerator:
(Loss) earnings from continuing operations	$	(16,340	)	$	(16,340	)	$	113,357	$	113,357		$	234,557	$	234,557
Net (earnings) loss attributable to noncontrolling interests	(25,129		)	(25,129		)	6,098		6,098			5,643		5,643
Impact from Match Group's dilutive securities ^{(a) (b)}	—			—			—		(1,799		)	—		—
(Loss) earnings from continuing operations attributable to IAC shareholders	(41,469		)	(41,469		)	119,455		117,656			240,200		240,200
Earnings from discontinued operations attributable to IAC shareholders	189			189			17		17			174,673		174,673
Net (loss) earnings attributable to IAC shareholders	$	(41,280	)	$	(41,280	)	$	119,472	$	117,673		$	414,873	$	414,873

Denominator:
Weighted average basic shares outstanding	80,045			80,045			82,944		82,944			83,292		83,292
Dilutive securities including subsidiary denominated equity, stock options and RSUs^{(c) (d) (e)(f)}	—			—			—		5,323			—		5,266
Denominator for earnings per share—weighted average shares^{(c) (d) (e)(f)}	80,045			80,045			82,944		88,267			83,292		88,558

(Loss) earnings per share attributable to IAC shareholders:
(Loss) earnings per share from continuing operations	$	(0.52	)	$	(0.52	)	$	1.44	$	1.33		$	2.88	$	2.71
Discontinued operations	—			—			—		—			2.10		1.97
(Loss) earnings per share	$	(0.52	)	$	(0.52	)	$	1.44	$	1.33		$	4.98	$	4.68

__________________________________________________________________


(a)	Represents the impact on earnings related to Match Group's dilutive securities under the if-converted method.


(b)	The impact on earnings of Match Group's dilutive securities is not applicable for the year ended December 31, 2014 as it was a wholly-owned subsidiary of the Company until its IPO on November 24, 2015. For the year ended December 31, 2016, the impact on earnings related to Match Group's dilutive securities under the if-converted method is excluded as the impact is anti-dilutive.


(c)	For the year ended December 31, 2016, the Company had a loss from continuing operations; therefore, approximately 11.3 million potentially dilutive securities were excluded from computing dilutive earnings per share because the impact would have been anti-dilutive. Accordingly, the weighted average basic shares outstanding were used to compute all earnings per share amounts.

(d)

(e)


(f)	See "Note 13—Stock-based Compensation" for additional information on equity instruments denominated in the shares of certain subsidiaries.

STOCK-BASED COMPENSATION (Tables)

12 Months Ended

Dec. 31, 2016

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Changes in Outstanding Stock Options

Stock options outstanding at December 31, 2016 and changes during the year ended December 31, 2016 are as follows:



	December 31, 2016
	Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term	Aggregate Intrinsic Value
	(Shares and intrinsic value in thousands)
Options outstanding at January 1, 2016	7,283		$	52.13
Granted	1,722		46.25
Exercised	(740	)	34.90
Forfeited	(142	)	53.30
Expired	(65	)	55.31
Options outstanding at December 31, 2016	8,058		$	52.41	6.7	$	120,681
Options exercisable	4,170		$	44.91	4.9	$	87,865

Schedule of Information for Stock Options Outstanding and Exercisable

The following table summarizes the information about stock options outstanding and exercisable at December 31, 2016:



	Options Outstanding				Options Exercisable
Range of Exercise Prices	Outstanding at December 31, 2016	Weighted- Average Remaining Contractual Life in Years	Weighted- Average Exercise Price		Exercisable at December 31, 2016	Weighted- Average Remaining Contractual Life in Years	Weighted- Average Exercise Price
	(Shares in thousands)
$10.01 to $20.00	404	2.6	$	18.02	404	2.6	$	18.02
$20.01 to $30.00	238	2.3	20.97		238	2.3	20.97
$30.01 to $40.00	913	4.1	31.61		913	4.1	31.61
$40.01 to $50.00	2,727	7.1	44.31		1,389	5.1	46.35
$50.01 to $60.00	464	5.7	58.30		333	4.3	58.80
$60.01 to $70.00	1,850	8.0	64.70		540	7.2	64.72
$70.01 to $80.00	962	8.2	74.23		228	7.8	73.20
$80.01 to $90.00	500	8.3	84.31		125	8.3	84.31
	8,058	6.7	$	52.41	4,170	4.9	$	44.91

Schedule of Weighted Average Assumptions

The following are the weighted average assumptions used in the Black-Scholes option pricing model:



	Years Ended December 31,
	2016		2015		2014
Expected volatility	29	%	28	%	31	%
Risk-free interest rate	1.2	%	1.6	%	1.5	%
Expected term	4.8 years		5.3 years		4.8 years
Dividend yield	—	%	2.0	%	1.5	%

Schedule of Outstanding Unvested RSUs and PSUs

Unvested RSUs and PSUs outstanding at December 31, 2016 and changes during the year ended December 31, 2016 are as follows:



	RSUs				PSUs
	Number of shares		Weighted Average Grant Date Fair Value		Number of shares		Weighted Average Grant Date Fair Value
	(Shares in thousands)
Unvested at January 1, 2016	650		$	57.76	2		$	71.39
Granted	148		46.92		—		—
Vested	(268	)	52.41		(2	)	71.39
Forfeited	(4	)	61.68		—		—
Unvested at December 31, 2016	526		$	57.41	—		$	—

SEGMENT INFORMATION (Tables)

12 Months Ended

Dec. 31, 2016

Segment Reporting [Abstract]

Schedule of Segment Reporting Information

Operating segments are combined for reporting purposes if they meet certain aggregation criteria, which principally relate to the similarity of their economic characteristics or, in the case of the Other reportable segment, do not meet the quantitative thresholds that require presentation as separate operating segments.



	Years Ended December 31,
	2016			2015			2014
	(In thousands)
Revenue:
Match Group	$	1,222,526		$	1,020,431		$	888,268
HomeAdvisor	498,890			361,201			283,541
Video	228,649			213,317			182,454
Applications	604,140			760,748			776,707
Publishing	407,313			691,686			791,549
Other	178,949			184,095			187,834
Inter-segment elimination	(585		)	(545		)	(806		)
Total	$	3,139,882		$	3,230,933		$	3,109,547



	Years Ended December 31,
	2016			2015			2014
	(In thousands)
Operating Income (Loss):
Match Group	$	305,908		$	193,556		$	228,567
HomeAdvisor	35,343			6,452			1,061
Video	(27,656		)	(38,756		)	(43,346		)
Applications	109,663			175,145			178,960
Publishing	(334,417		)	(26,692		)	110,523
Other	(2,037		)	(9,186		)	8,108
Corporate	(119,429		)	(120,931		)	(105,146		)
Total	$	(32,625	)	$	179,588		$	378,727



	Years Ended December 31,
	2016			2015			2014
	(In thousands)
Adjusted EBITDA:^(a)
Match Group	$	403,955		$	278,667		$	273,448
HomeAdvisor	48,546			18,529			17,701
Video	(21,247		)	(38,384		)	(39,916		)
Applications	132,276			184,258			186,192
Publishing	(7,571		)	87,788			150,960
Other	1,227			10,621			13,134
Corporate	(55,967		)	(55,689		)	(57,443		)
Total	$	501,219		$	485,790		$	544,076



	December 31,
	2016		2015
	(In thousands)
Segment Assets:^(b)
Match Group	$	509,936	$	330,736
HomeAdvisor	97,751		32,116
Video	230,269		90,671
Applications	109,019		108,997
Publishing	409,838		391,450
Other	—		64,550
Corporate	1,009,557		1,483,979
Total	$	2,366,370	$	2,502,499



	Years Ended December 31,
	2016		2015		2014
	(In thousands)
Capital expenditures:
Match Group	$	48,903	$	29,156	$	21,793
HomeAdvisor	16,660		10,170		6,775
Video	2,508		2,466		1,878
Applications	1,196		4,681		4,220
Publishing	2,093		6,283		13,481
Other	2,907		3,175		2,845
Corporate	3,772		6,118		6,241
Total	$	78,039	$	62,049	$	57,233

_______________________________________________________________________________

(a)


(b)	Consistent with the Company's primary metric (described in (a) above), the Company excludes, if applicable, goodwill and intangible assets from the measure of segment assets presented above.

Schedule of Revenue by Geographic Areas



	Years Ended December 31,
	2016		2015		2014
	(In thousands)
Revenue
United States	$	2,318,976	$	2,376,035	$	2,146,189
All other countries	820,906		854,898		963,358
Total	$	3,139,882	$	3,230,933	$	3,109,547

Schedule of Long-lived Assets by Geographic Areas



	December 31,
	2016		2015
	(In thousands)
Long-lived assets (excluding goodwill and intangible assets)
United States	$	281,725	$	279,913
All other countries	24,523		22,904
Total	$	306,248	$	302,817

Schedule of Reconciliation of Adjusted EBITDA to Operating Income (Loss)

The following tables reconcile operating income (loss) for the Company's reportable segments and net (loss) earnings attributable to IAC shareholders to Adjusted EBITDA:



	Year Ended December 31, 2016
	Operating Income (Loss)			Stock-Based Compensation Expense		Depreciation		Amortization of Intangibles		Acquisition-related Contingent Consideration Fair Value Adjustments			Goodwill Impairment		Adjusted EBITDA
	(In thousands)
Match Group	$	305,908		$	52,988	$	31,227	$	23,029	$	(9,197	)	$	—	$	403,955
HomeAdvisor	35,343			1,631		8,419		3,153		—			—		48,546
Video	(27,656		)	640		1,785		4,176		(192		)	—		(21,247		)
Applications	109,663			—		5,095		5,483		12,035			—		132,276
Publishing	(334,417		)	—		8,531		42,948		—			275,367		(7,571		)
Other	(2,037		)	—		2,718		637		(91		)	—		1,227
Corporate	(119,429		)	49,561		13,901		—		—			—		(55,967		)
Total	$	(32,625	)	$	104,820	$	71,676	$	79,426	$	2,555		$	275,367	$	501,219
Interest expense	(109,110		)
Other income, net	60,461
Loss from continuing operations before income taxes	(81,274		)
Income tax benefit	64,934
Loss from continuing operations	(16,340		)
Earnings from discontinued operations, net of tax	189
Net loss	(16,151		)
Net earnings attributable to noncontrolling interests	(25,129		)
Net loss attributable to IAC shareholders	$	(41,280	)



	Year Ended December 31, 2015
	Operating Income (Loss)			Stock-Based Compensation Expense		Depreciation		Amortization of Intangibles		Acquisition-related Contingent Consideration Fair Value Adjustments			Goodwill Impairment		Adjusted EBITDA
	(In thousands)
Match Group	$	193,556		$	50,083	$	25,983	$	20,101	$	(11,056	)	$	—	$	278,667
HomeAdvisor	6,452			1,649		6,593		3,835		—			—		18,529
Video	(38,756		)	360		1,091		1,558		(2,637		)	—		(38,384		)
Applications	175,145			—		4,617		6,264		(1,768		)	—		184,258
Publishing	(26,692		)	—		9,577		104,903		—			—		87,788
Other	(9,186		)	—		2,460		3,291		—			14,056		10,621
Corporate	(120,931		)	53,358		11,884		—		—			—		(55,689		)
Total	179,588			$	105,450	$	62,205	$	139,952	$	(15,461	)	$	14,056	$	485,790
Interest expense	(73,636		)
Other income, net	36,921
Earnings from continuing operations before income taxes	142,873
Income tax provision	(29,516		)
Earnings from continuing operations	113,357
Earnings from discontinued operations, net of tax	17
Net earnings	113,374
Net loss attributable to noncontrolling interests	6,098
Net earnings attributable to IAC shareholders	$	119,472



	Year Ended December 31, 2014
	Operating Income (Loss)			Stock-Based Compensation Expense		Depreciation		Amortization of Intangibles		Acquisition-related Contingent Consideration Fair Value Adjustments			Adjusted EBITDA
	(In thousands)
Match Group	$	228,567		$	20,851	$	25,547	$	11,395	$	(12,912	)	$	273,448
HomeAdvisor	1,061			558		6,520		9,562		—			17,701
Video	(43,346		)	647		899		2,099		(215		)	(39,916		)
Applications	178,960			—		4,385		2,521		326			186,192
Publishing	110,523			—		11,856		28,581		—			150,960
Other	8,108			—		1,824		3,768		(566		)	13,134
Corporate	(105,146		)	37,578		10,125		—		—			(57,443		)
Total	378,727			$	59,634	$	61,156	$	57,926	$	(13,367	)	$	544,076
Interest expense	(56,314		)
Other expense, net	(52,484		)
Earnings from continuing operations before income taxes	269,929
Income tax provision	(35,372		)
Earnings from continuing operations	234,557
Earnings from discontinued operations, net of tax	174,673
Net earnings	409,230
Net loss attributable to noncontrolling interests	5,643
Net earnings attributable to IAC shareholders	$	414,873

Schedule of Reconciliation of Segment Assets to Total Assets

The following tables reconcile segment assets to total assets:



	December 31, 2016
	Segment Assets		Goodwill		Indefinite-Lived Intangible Assets		Definite-Lived Intangible Assets		Total Assets
	(In thousands)
Match Group	$	509,936	$	1,280,960	$	238,361	$	10,809	$	2,040,066
HomeAdvisor	97,751		170,611		4,884		5,908		279,154
Video	230,269		25,239		1,800		4,167		261,475
Applications	109,019		447,242		60,600		2,481		619,342
Publishing	409,838		—		15,000		11,441		436,279
Other	—		—		—		—		—
Corporate^(c)	1,009,557		—		—		—		1,009,557
Total	$	2,366,370	$	1,924,052	$	320,645	$	34,806	$	4,645,873



	December 31, 2015
	Segment Assets		Goodwill		Indefinite-Lived Intangible Assets		Definite-Lived Intangible Assets		Total Assets
	(In thousands)
Match Group	$	330,736	$	1,293,109	$	243,697	$	32,711	$	1,900,253
HomeAdvisor	32,116		150,251		600		5,727		188,694
Video	90,671		15,590		1,800		3,343		111,404
Applications	108,997		447,242		60,600		7,964		624,803
Publishing	391,450		277,192		59,805		7,849		736,296
Other	64,550		61,980		13,635		3,097		143,262
Corporate^(c)	1,483,979		—		—		—		1,483,979
Total	$	2,502,499	$	2,245,364	$	380,137	$	60,691	$	5,188,691

_____________________________________


(c)	Corporate assets consist primarily of cash and cash equivalents, marketable securities and IAC's headquarters building.

COMMITMENTS (Tables)

12 Months Ended

Dec. 31, 2016

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Payments Under Operating Lease Agreements

Future minimum payments under operating lease agreements are as follows:



Years Ending December 31,	(In thousands)
2017	$	31,834
2018	31,661
2019	24,316
2020	18,523
2021	13,239
Thereafter	189,070
Total	$	308,643

Schedule of Commercial Commitments Outstanding

The Company also has funding commitments that could potentially require its performance in the event of demands by third parties or contingent events as follows:



	Amount of Commitment Expiration Per Period
	Less Than 1 Year		1-3 Years		3-5 Years		More Than 5 Years		Total Amounts Committed
	(In thousands)
Purchase obligations	$	10,581	$	10,000	$	—	$	—	$	20,581
Letters of credit and surety bonds	768		63		—		1,437		2,268
Total commercial commitments	$	11,349	$	10,063	$	—	$	1,437	$	22,849

SUPPLEMENTAL CASH FLOW INFORMATION (Tables)

12 Months Ended

Dec. 31, 2016

Supplemental Cash Flow Information [Abstract]

Schedule of Supplemental Disclosure of Cash Flow Information

Supplemental Disclosure of Cash Flow Information:



	Years Ended December 31,
	2016			2015			2014
	(In thousands)
Cash paid (received) during the year for:
Interest	$	107,360		$	51,666		$	54,027
Income tax payments	69,103			70,762			63,521
Income tax refunds	(23,877		)	(5,619		)	(10,477		)

CONSOLIDATED FINANCIAL STATEMENT DETAILS (Tables)

12 Months Ended

Dec. 31, 2016

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Other Current Assets



	December 31,
	2016		2015
	(In thousands)
Other current assets:
Income taxes receivable	$	41,352	$	26,793
Production costs	39,763		24,804
Prepaid expenses	37,665		40,091
Capitalized downloadable search toolbar costs, net	28,737		27,929
Other	56,551		54,669
Other current assets	$	204,068	$	174,286

Schedule of Property and Equipment, Net



Asset Category	Estimated Useful Lives
Buildings and leasehold improvements	3 to 39 Years
Computer equipment and capitalized software	2 to 3 Years
Furniture and other equipment	3 to 12 Years



	December 31,
	2016			2015
	(In thousands)
Property and equipment, net:
Buildings and leasehold improvements	$	247,451		$	235,545
Computer equipment and capitalized software	259,464			239,309
Furniture and other equipment	93,002			88,664
Projects in progress	13,048			18,676
Land	5,117			5,117
	618,082			587,311
Accumulated depreciation and amortization	(311,834		)	(284,494		)
Property and equipment, net	$	306,248		$	302,817

Schedule of Accrued Expenses and Other Current Liabilities



	December 31,
	2016		2015
	(In thousands)
Accrued expenses and other current liabilities:
Accrued employee compensation and benefits	$	106,301	$	104,481
Accrued advertising expense	68,916		87,064
Other	169,693		191,706
Accrued expenses and other current liabilities	$	344,910	$	383,251

Schedule of Revenue



	Years Ended December 31,
	2016		2015		2014
	(In thousands)
Revenue:
Service revenue	$	2,967,474	$	3,077,080	$	2,957,735
Product revenue	172,408		153,853		151,812
Revenue	$	3,139,882	$	3,230,933	$	3,109,547

Schedule of Cost of Revenue



	Years Ended December 31,
	2016		2015		2014
	(In thousands)
Cost of revenue:
Cost of service revenue	$	617,058	$	652,137	$	734,222
Cost of product revenue	138,672		126,024		125,982
Cost of revenue	$	755,730	$	778,161	$	860,204

Schedule of Other (Expense) Income, Net



	Years Ended December 31,
	2016		2015		2014
	(In thousands)
Other income (expense), net	$	60,461	$	36,921	$	(52,484	)

RESTRUCTURING CHARGES (Tables)

12 Months Ended

Dec. 31, 2016

Restructuring and Related Activities [Abstract]

Schedule of Restructuring Reserve by Type of Cost

A summary of the costs incurred, payments made and the related accruals for the Match Group segment at December 31, 2016 and 2015 are presented below.



	December 31, 2016
	Severance			Professional Fees & Other			Total
	(In thousands)
Accrual as of January 1	$	3,013		$	564		$	3,577
Charges incurred	345			4,576			4,921
Payments made	(2,404		)	(4,844		)	(7,248		)
Accrual as of December 31	$	954		$	296		$	1,250



	December 31, 2015
	Severance			Professional Fees & Other			Total
	(In thousands)
Accrual as of January 1	$	795		$	933		$	1,728
Charges incurred	8,350			8,417			16,767
Payments made	(6,132		)	(8,786		)	(14,918		)
Accrual as of December 31	$	3,013		$	564		$	3,577

A summary of the costs incurred, payments made and the related accruals for both the Publishing and Applications segments at December 31, 2016 is presented below.

See "Note 2—Summary of Significant Accounting Policies—Certain Risks and Concentrations" for additional information on revenue earned from Google.



	Year Ended December 31, 2016
	Publishing		Applications		Total
	(In thousands)
Lease termination costs	$	8,172	$	100	$	8,272
Severance	7,461		2,532		9,993
Total	$	15,633	$	2,632	$	18,265



	December 31, 2016
	Lease Termination Costs			Severance			Total
	(In thousands)
Publishing accrual:
Charges incurred	$	8,172		$	7,461		$	15,633
Payments made	(314		)	(5,074		)	(5,388		)
Publishing accrual as of December 31	$	7,858		$	2,387		$	10,245



	December 31, 2016
	Lease Termination Costs		Severance			Total
	(In thousands)
Applications accrual:
Charges incurred	$	100	$	2,532		$	2,632
Payments made	—		(1,933		)	(1,933		)
Applications accrual as of December 31	$	100	$	599		$	699

Schedule of Allocated Restructuring Costs

The costs are allocated as follows in the accompanying consolidated statement of operations:



	Year Ended December 31, 2016
	Publishing		Applications		Total
	(In thousands)
Cost of revenue	$	9,186	$	931	$	10,117
Selling and marketing expense	3,080		593		3,673
General and administrative expense	2,175		351		2,526
Product development expense	1,192		757		1,949
Total	$	15,633	$	2,632	$	18,265

The costs are allocated as follows in the statement of operations:



	Year Ended December 31,
	2016		2015
	(In thousands)
Cost of revenue	$	566	$	2,947
Selling and marketing expense	560		1,678
General and administrative expense	1,647		8,160
Product development expense	2,148		3,982
Total	$	4,921	$	16,767

GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION (Tables)

12 Months Ended

Dec. 31, 2016

Guarantor and Nonguarantor Financial Statements [Abstract]

Condensed Balance Sheet

Balance sheet at December 31, 2016:



	IAC		Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Eliminations			IAC Consolidated
	(In thousands)
Cash and cash equivalents	$	552,699	$	—	$	776,488	$	—		$	1,329,187
Marketable securities	89,342		—		—		—			89,342
Accounts receivable, net	—		90,807		129,331		—			220,138
Other current assets	71,152		30,515		102,401		—			204,068
Intercompany receivables	—		735,108		1,047,757		(1,782,865		)	—
Property and equipment, net	4,350		178,806		123,092		—			306,248
Goodwill	—		521,740		1,402,312		—			1,924,052
Intangible assets, net	—		83,179		272,272		—			355,451
Investment in subsidiaries	3,659,570		557,802		—		(4,217,372		)	—
Other non-current assets	52,228		111,037		169,595		(115,473		)	217,387
Total assets	$	4,429,341	$	2,308,994	$	4,023,248	$	(6,115,710	)	$	4,645,873

Current portion of long-term debt	$	20,000	$	—	$	—	$	—		$	20,000
Accounts payable, trade	2,697		38,283		21,883		—			62,863
Other current liabilities	42,159		120,279		468,087		—			630,525
Long-term debt, net of current portion	405,991		—		1,176,493		—			1,582,484
Income taxes payable	—		3,470		30,274		(216		)	33,528
Intercompany liabilities	1,782,865		—		—		(1,782,865		)	—
Other long-term liabilities	306,407		22,714		59,112		(115,257		)	272,976
Redeemable noncontrolling interests	—		—		32,827		—			32,827
IAC shareholders' equity	1,869,222		2,124,248		2,093,124		(4,217,372		)	1,869,222
Noncontrolling interests	—		—		141,448		—			141,448
Total liabilities and shareholders' equity	$	4,429,341	$	2,308,994	$	4,023,248	$	(6,115,710	)	$	4,645,873

Balance sheet at December 31, 2015:



	IAC		Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Eliminations			IAC Consolidated
	(In thousands)
Cash and cash equivalents	$	1,073,053	$	—	$	408,394	$	—		$	1,481,447
Marketable securities	27,578		—		11,622		—			39,200
Accounts receivable, net	33		115,280		134,764		—			250,077
Other current assets	30,813		46,128		97,345		—			174,286
Intercompany receivables	—		637,324		963,146		(1,600,470		)	—
Property and equipment, net	4,432		198,890		99,495		—			302,817
Goodwill	—		776,569		1,468,795		—			2,245,364
Intangible assets, net	—		135,817		305,011		—			440,828
Investment in subsidiaries	3,128,765		466,601		—		(3,595,366		)	—
Other non-current assets	84,368		11,258		174,038		(14,992		)	254,672
Total assets	$	4,349,042	$	2,387,867	$	3,662,610	$	(5,210,828	)	$	5,188,691

Current portion of long-term debt	$	—	$	—	$	40,000	$	—		$	40,000
Accounts payable, trade	4,711		42,104		40,068		—			86,883
Other current liabilities	62,833		140,077		438,753		—			641,663
Long-term debt, net of current portion	550,083		—		1,176,871		—			1,726,954
Income taxes payable	152		3,435		30,105		—			33,692
Intercompany liabilities	1,600,470		—		—		(1,600,470		)	—
Other long-term liabilities	326,267		18,160		83,848		(14,992		)	413,283
Redeemable noncontrolling interests	—		—		30,391		—			30,391
IAC shareholders' equity	1,804,526		2,184,091		1,411,275		(3,595,366		)	1,804,526
Noncontrolling interests	—		—		411,299		—			411,299
Total liabilities and shareholders' equity	$	4,349,042	$	2,387,867	$	3,662,610	$	(5,210,828	)	$	5,188,691

Condensed Statement of Operations

Statement of operations for the year ended December 31, 2016:



	IAC			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			IAC Consolidated
	(In thousands)
Revenue	$	—		$	1,381,525		$	1,771,568		$	(13,211	)	$	3,139,882
Operating costs and expenses:
Cost of revenue (exclusive of depreciation shown separately below)	859			302,293			452,990			(412		)	755,730
Selling and marketing expense	2,353			689,933			565,906			(12,929		)	1,245,263
General and administrative expense	89,583			163,315			294,132			130			547,160
Product development expense	4,807			82,071			111,007			—			197,885
Depreciation	1,610			31,366			38,700			—			71,676
Amortization of intangibles	—			41,157			38,269			—			79,426
Goodwill impairment	—			253,245			22,122			—			275,367
Total operating costs and expenses	99,212			1,563,380			1,523,126			(13,211		)	3,172,507
Operating (loss) income	(99,212		)	(181,855		)	248,442			—			(32,625		)
Equity in earnings (losses) of unconsolidated affiliates	49,536			(23,573		)	—			(25,963		)	—
Interest expense	(26,876		)	—			(82,234		)	—			(109,110		)
Other (expense) income, net	(2,059		)	10,040			52,480			—			60,461
(Loss) earnings from continuing operations before income taxes	(78,611		)	(195,388		)	218,688			(25,963		)	(81,274		)
Income tax benefit (provision)	37,142			60,504			(32,712		)	—			64,934
(Loss) earnings from continuing operations	(41,469		)	(134,884		)	185,976			(25,963		)	(16,340		)
Earnings from discontinued operations, net of tax	189			—			9			(9		)	189
Net (loss) earnings	(41,280		)	(134,884		)	185,985			(25,972		)	(16,151		)
Net earnings attributable to noncontrolling interests	—			—			(25,129		)	—			(25,129		)
Net (loss) earnings attributable to IAC shareholders	$	(41,280	)	$	(134,884	)	$	160,856		$	(25,972	)	$	(41,280	)
Comprehensive (loss) income attributable to IAC shareholders	$	(76,431	)	$	(115,899	)	$	114,376		$	1,523		$	(76,431	)

Statement of operations for the year ended December 31, 2015:



	IAC			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			IAC Consolidated
	(In thousands)
Revenue	$	—		$	1,635,345		$	1,605,597		$	(10,009	)	$	3,230,933
Operating costs and expenses:
Cost of revenue (exclusive of depreciation shown separately below)	720			334,931			443,700			(1,190		)	778,161
Selling and marketing expense	3,210			819,354			531,872			(8,860		)	1,345,576
General and administrative expense	93,090			157,013			275,485			41			525,629
Product development expense	4,311			85,582			95,873			—			185,766
Depreciation	1,918			27,276			33,011			—			62,205
Amortization of intangibles	—			102,622			37,330			—			139,952
Goodwill impairment	—			14,056			—			—			14,056
Total operating costs and expenses	103,249			1,540,834			1,417,271			(10,009		)	3,051,345
Operating (loss) income	(103,249		)	94,511			188,326			—			179,588
Equity in earnings of unconsolidated affiliates	215,092			18,137			—			(233,229		)	—
Interest expense	(49,405		)	(6,130		)	(18,101		)	—			(73,636		)
Other (expense) income, net	(3,201		)	27,903			12,219			—			36,921
Earnings from continuing operations before income taxes	59,237			134,421			182,444			(233,229		)	142,873
Income tax benefit (provision)	60,218			(47,280		)	(42,454		)	—			(29,516		)
Earnings from continuing operations	119,455			87,141			139,990			(233,229		)	113,357
Earnings (loss) from discontinued operations, net of tax	17			—			(12		)	12			17
Net earnings	119,472			87,141			139,978			(233,217		)	113,374
Net loss attributable to noncontrolling interests	—			—			6,098			—			6,098
Net earnings attributable to IAC shareholders	$	119,472		$	87,141		$	146,076		$	(233,217	)	$	119,472
Comprehensive income attributable to IAC shareholders	$	55,069		$	83,664		$	80,248		$	(163,912	)	$	55,069

Statement of operations for the year ended December 31, 2014:



	IAC			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			IAC Consolidated
	(In thousands)
Revenue	$	—		$	1,637,345		$	1,484,041		$	(11,839	)	$	3,109,547
Operating costs and expenses:
Cost of revenue (exclusive of depreciation shown separately below)	998			414,255			447,704			(2,753		)	860,204
Selling and marketing expense	2,138			696,173			457,401			(8,303		)	1,147,409
General and administrative expense	105,221			127,122			211,222			45			443,610
Product development expense	6,496			76,482			78,365			(828		)	160,515
Depreciation	1,426			25,670			34,060			—			61,156
Amortization of intangibles	—			31,863			26,063			—			57,926
Total operating costs and expenses	116,279			1,371,565			1,254,815			(11,839		)	2,730,820
Operating (loss) income	(116,279		)	265,780			229,226			—			378,727
Equity in earnings of unconsolidated affiliates	257,714			3,369			—			(261,083		)	—
Interest expense	(51,988		)	(4,187		)	(139		)	—			(56,314		)
Other (expense) income, net	(1,444		)	6,381			(57,421		)	—			(52,484		)
Earnings from continuing operations before income taxes	88,003			271,343			171,666			(261,083		)	269,929
Income tax benefit (provision)	152,197			(104,606		)	(82,963		)	—			(35,372		)
Earnings from continuing operations	240,200			166,737			88,703			(261,083		)	234,557
Earnings from discontinued operations, net of tax	174,673			—			570			(570		)	174,673
Net earnings	414,873			166,737			89,273			(261,653		)	409,230
Net loss attributable to noncontrolling interests	—			—			5,643			—			5,643
Net earnings attributable to IAC shareholders	$	414,873		$	166,737		$	94,916		$	(261,653	)	$	414,873
Comprehensive income attributable to IAC shareholders	$	340,219		$	158,538		$	23,409		$	(181,947	)	$	340,219

Condensed Statement of Cash Flows

Statement of cash flows for the year ended December 31, 2016:



	IAC			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			IAC Consolidated
	(In thousands)
Net cash (used in) provided by operating activities attributable to continuing operations	$	(84,770	)	$	203,563		$	173,584		$	—		$	292,377
Cash flows from investing activities attributable to continuing operations:
Acquisitions, net of cash acquired	—			—			(18,403		)	—			(18,403		)
Capital expenditures	(479		)	(19,317		)	(58,243		)	—			(78,039		)
Investments in time deposits	—			—			(87,500		)	—			(87,500		)
Proceeds from maturities of time deposits	—			—			87,500			—			87,500
Proceeds from maturities and sales of marketable debt securities	252,369			—			—			—			252,369
Purchases of marketable debt securities	(313,943		)	—			—			—			(313,943		)
Purchases of investments	—			—			(12,565		)	—			(12,565		)
Net proceeds from the sale of businesses and investments	73,843			1,779			96,606			—			172,228
Intercompany	(215,711		)	—			—			215,711			—
Other, net	126			643			10,446			—			11,215
Net cash (used in) provided by investing activities attributable to continuing operations	(203,795		)	(16,895		)	17,841			215,711			12,862
Cash flows from financing activities attributable to continuing operations:
Principal payments on Match Group Term Loan	—			—			(450,000		)	—			(450,000		)
Proceeds from Match Group 2016 Senior Notes offering	—			—			400,000			—			400,000
Principal payments on IAC debt, including redemptions and repurchases of Senior Notes	(126,409		)	—			—			—			(126,409		)
Debt issuance costs	—			—			(7,811		)	—			(7,811		)
Purchase of treasury stock	(308,948		)	—			—			—			(308,948		)
Issuance of IAC common stock pursuant to stock-based awards, net of withholding taxes	(895		)	—			—			—			(895		)
Issuance of Match Group common stock pursuant to stock-based awards, net of withholding taxes	—			—			9,548			—			9,548
Excess tax benefits from stock-based awards	22,084			—			29,680			—			51,764
Purchase of noncontrolling interests	(1,400		)	—			(1,340		)	—			(2,740		)
Acquisition-related contingent consideration payments	—			(351		)	(1,829		)	—			(2,180		)
Funds held in escrow for MyHammer tender offer	—			—			(10,548		)	—			(10,548		)
Intercompany	184,233			(184,233		)	215,711			(215,711		)	—
Other, net	(454		)	(2,084		)	(308		)	—			(2,846		)
Net cash (used in) provided by financing activities attributable to continuing operations	(231,789		)	(186,668		)	183,103			(215,711		)	(451,065		)
Total cash (used in) provided by continuing operations	(520,354		)	—			374,528			—			(145,826		)
Effect of exchange rate changes on cash and cash equivalents	—			—			(6,434		)	—			(6,434		)
Net (decrease) increase in cash and cash equivalents	(520,354		)	—			368,094			—			(152,260		)
Cash and cash equivalents at beginning of period	1,073,053			—			408,394			—			1,481,447
Cash and cash equivalents at end of period	$	552,699		$	—		$	776,488		$	—		$	1,329,187

Statement of cash flows for the year ended December 31, 2015:



	IAC			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			IAC Consolidated
	(In thousands)
Net cash (used in) provided by operating activities attributable to continuing operations	$	(139,227	)	$	258,582		$	230,050		$	349,405
Cash flows from investing activities attributable to continuing operations:
Acquisitions, net of cash acquired	—			(6,078		)	(611,324		)	(617,402		)
Capital expenditures	(1,332		)	(21,905		)	(38,812		)	(62,049		)
Proceeds from maturities and sales of marketable debt securities	218,462			—			—			218,462
Purchases of marketable debt securities	(93,134		)	—			—			(93,134		)
Purchases of investments	(6,978		)	—			(27,492		)	(34,470		)
Net proceeds from the sale of investments and business	1,277			—			8,136			9,413
Other, net	3,613			385			(7,539		)	(3,541		)
Net cash provided by (used in) investing activities attributable to continuing operations	121,908			(27,598		)	(677,031		)	(582,721		)
Cash flows from financing activities attributable to continuing operations:
Borrowings under Match Group Term Loan	—			—			788,000			788,000
Principal payment on Liberty Bond	—			(80,000		)	—			(80,000		)
Debt issuance costs	(1,876		)	—			(17,174		)	(19,050		)
Fees and expenses related to note exchange	—			—			(6,954		)	(6,954		)
Proceeds from Match Group IPO, net of fees and expenses	—			—			428,789			428,789
Purchase of treasury stock	(200,000		)	—			—			(200,000		)
Dividends	(113,196		)	—			—			(113,196		)
Issuance of IAC common stock pursuant to stock-based awards, net of withholding taxes	(38,418		)	—			—			(38,418		)
Repurchase of stock-based awards	—			—			(23,431		)	(23,431		)
Excess tax benefits from stock-based awards	18,034			—			38,384			56,418
Purchase of noncontrolling interests	—			—			(32,207		)	(32,207		)
Acquisition-related contingent consideration payments	—			(240		)	(5,510		)	(5,750		)
Intercompany	683,571			(150,744		)	(532,827		)	—
Other, net	(19,834		)	—			441			(19,393		)
Net cash provided by (used in) financing activities attributable to continuing operations	328,281			(230,984		)	637,511			734,808
Total cash provided by continuing operations	310,962			—			190,530			501,492
Total cash used in discontinued operations	(140		)	—			(12		)	(152		)
Effect of exchange rate changes on cash and cash equivalents	—			—			(10,298		)	(10,298		)
Net increase in cash and cash equivalents	310,822			—			180,220			491,042
Cash and cash equivalents at beginning of period	762,231			—			228,174			990,405
Cash and cash equivalents at end of period	$	1,073,053		$	—		$	408,394		$	1,481,447

Statement of cash flows for the year ended December 31, 2014:



	IAC			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			IAC Consolidated
	(In thousands)
Net cash (used in) provided by operating activities attributable to continuing operations	$	(109,745	)	$	329,671		$	204,122		$	424,048
Cash flows from investing activities attributable to continuing operations:
Acquisitions, net of cash acquired	—			(97,463		)	(161,928		)	(259,391		)
Capital expenditures	(1,843		)	(26,640		)	(28,750		)	(57,233		)
Proceeds from maturities and sales of marketable debt securities	21,644			—			—			21,644
Purchases of marketable debt securities	(175,826		)	—			—			(175,826		)
Purchases of investments	(4,800		)	(2,087		)	(17,447		)	(24,334		)
Net proceeds from the sale of investments and assets	—			—			58,388			58,388
Other, net	(2,000		)	11			(1,053		)	(3,042		)
Net cash used in investing activities attributable to continuing operations	(162,825		)	(126,179		)	(150,790		)	(439,794		)
Cash flows from financing activities attributable to continuing operations:
Debt issuance costs	(383		)	—			—			(383		)
Dividends	(97,338		)	—			—			(97,338		)
Issuance of IAC common stock pursuant to stock-based awards, net of withholding taxes	1,609			—			—			1,609
Excess tax benefits from stock-based awards	29,186			—			15,771			44,957
Purchase of noncontrolling interests	—			—			(33,165		)	(33,165		)
Acquisition-related contingent consideration payments	—			(406		)	(7,703		)	(8,109		)
Intercompany	321,192			(201,802		)	(119,390		)	—
Other, net	—			(1,310		)	12,759			11,449
Net cash provided by (used in) financing activities attributable to continuing operations	254,266			(203,518		)	(131,728		)	(80,980		)
Total cash used in continuing operations	(18,304		)	(26		)	(78,396		)	(96,726		)
Total cash used in discontinued operations	(116		)	—			(29		)	(145		)
Effect of exchange rate changes on cash and cash equivalents	—			26			(13,194		)	(13,168		)
Net decrease in cash and cash equivalents	(18,420		)	—			(91,619		)	(110,039		)
Cash and cash equivalents at beginning of period	780,651			—			319,793			1,100,444
Cash and cash equivalents at end of period	$	762,231		$	—		$	228,174		$	990,405

QUARTERLY RESULTS (UNAUDITED) (Tables)

12 Months Ended

Dec. 31, 2016

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Results



	Quarter Ended March 31^(a)		Quarter Ended June 30^(b)			Quarter Ended September 30		Quarter Ended December 31^(a)
	(In thousands, except per share data)
Year Ended December 31, 2016
Revenue	$	819,179	$	745,439		$	764,102	$	811,162
Cost of revenue	193,734		170,397			179,131		212,468
Operating income (loss)	21,417		(252,446		)	85,584		112,820
Earnings (loss) from continuing operations	7,934		(190,542		)	52,340		113,928
Net earnings (loss)	7,934		(190,542		)	52,340		114,117
Net earnings (loss) attributable to IAC shareholders	8,282		(194,775		)	43,162		102,051
Per share information attributable to IAC shareholders:
Basic earnings (loss) per share from continuing operations^(d)	$	0.10	$	(2.45	)	$	0.54	$	1.29
Diluted earnings (loss) per share from continuing operations^(d)	$	0.09	$	(2.45	)	$	0.49	$	1.18
Basic earnings (loss) per share^(d)	$	0.10	$	(2.45	)	$	0.54	$	1.29
Diluted earnings (loss) per share^(d)	$	0.09	$	(2.45	)	$	0.49	$	1.18


	Quarter Ended March 31		Quarter Ended June 30			Quarter Ended September 30		Quarter Ended December 31^(c)
	(In thousands, except per share data)
Year Ended December 31, 2015
Revenue	$	772,512	$	771,132		$	838,561	$	848,728
Cost of revenue	186,737		177,963			199,377		214,084
Operating income (loss)	35,119		62,769			87,130		(5,430		)
Earnings (loss) from continuing operations	21,863		57,885			65,026		(31,417		)
Net earnings (loss)	21,988		57,732			65,043		(31,389		)
Net earnings (loss) attributable to IAC shareholders	26,405		59,305			65,611		(31,849		)
Per share information attributable to IAC shareholders:
Basic earnings (loss) per share from continuing operations^(d)	$	0.31	$	0.72		$	0.79	$	(0.38	)
Diluted earnings (loss) per share from continuing operations^(d)	$	0.30	$	0.68		$	0.74	$	(0.38	)
Basic earnings (loss) per share^(d)	$	0.32	$	0.72		$	0.79	$	(0.38	)
Diluted earnings (loss) per share^(d)	$	0.30	$	0.68		$	0.74	$	(0.38	)

_______________________________________________________________________________


(a)	The first quarter and fourth quarter of 2016 include after-tax gains of $11.9 million and $37.5 million related to the sale of PriceRunner and ShoeBuy, respectively.


(b)	The second quarter of 2016 includes after-tax impairment charges related to goodwill and indefinite-lived intangible assets of $183.5 million and $7.2 million, respectively.


(c)	The fourth quarter of 2015 includes after-tax impairment charges related to indefinite-lived intangible assets and goodwill of $55.3 million and $14.1 million, respectively.


(d)	Quarterly per share amounts may not add to the related annual per share amount because of differences in the average common shares outstanding during each period

ORGANIZATION (Details)	12 Months Ended
ORGANIZATION (Details)	Dec. 31, 2016 segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of reportable segments	6
Match Group, Inc.
Noncontrolling Interest [Line Items]
Ownership interest (as a percent)	82.50%
Voting interest (as a percent)	97.90%

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - REVENUE AND CONCENTRATION RISK (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Certain Risks and Concentrations
Revenue	$ 811,162	$ 764,102	$ 745,439	$ 819,179	$ 848,728	$ 838,561	$ 771,132	$ 772,512	$ 3,139,882	$ 3,230,933	$ 3,109,547
Accounts receivable, net	220,138				250,077				220,138	250,077
Google Inc.
Certain Risks and Concentrations
Accounts receivable, net	65,800				97,200				$ 65,800	$ 97,200
Google Inc. \| Revenue \| Customer Concentration Risk
Certain Risks and Concentrations
Concentration risk (percentage)									26.00%	40.00%	45.00%
Publishing and Applications \| Google Inc.
Certain Risks and Concentrations
Revenue									$ 824,400	$ 1,300,000	$ 1,400,000
Operating Segments \| Match Group
Certain Risks and Concentrations
Revenue									$ 1,222,526	1,020,431	888,268
Operating Segments \| Match Group \| Minimum
Deferred revenue
Revenue recognition period									1 month
Operating Segments \| Match Group \| Maximum
Deferred revenue
Revenue recognition period									6 months
Operating Segments \| Match Group \| Dating
Deferred revenue
Deferred revenue	161,100				144,400				$ 161,100	144,400
Operating Segments \| Match Group \| Non-dating
Deferred revenue
Deferred revenue	23,300				25,700				23,300	25,700
Operating Segments \| HomeAdvisor
Deferred revenue
Deferred revenue	18,800				11,900				18,800	11,900
Certain Risks and Concentrations
Revenue									$ 498,890	361,201	283,541
Operating Segments \| HomeAdvisor \| Subscription term, one month
Deferred revenue
Revenue recognition period									1 month
Operating Segments \| HomeAdvisor \| Subscription term, three months
Deferred revenue
Revenue recognition period									3 months
Operating Segments \| HomeAdvisor \| Subscription term, one year
Deferred revenue
Revenue recognition period									1 year
Operating Segments \| Video
Certain Risks and Concentrations
Revenue									$ 228,649	213,317	182,454
Operating Segments \| Video \| Minimum
Deferred revenue
Revenue recognition period									1 month
Operating Segments \| Video \| Maximum
Deferred revenue
Revenue recognition period									1 year
Operating Segments \| Video \| Vimeo
Deferred revenue
Deferred revenue	36,700				30,400				$ 36,700	30,400
Operating Segments \| Video \| Electus
Deferred revenue
Deferred revenue	23,100				24,400				23,100	24,400
Operating Segments \| Publishing
Certain Risks and Concentrations
Revenue									$ 407,313	$ 691,686	$ 791,549
Operating Segments \| Publishing \| Google Inc. \| Revenue \| Customer Concentration Risk
Certain Risks and Concentrations
Concentration risk (percentage)									73.00%	83.00%	83.00%
Operating Segments \| Applications
Deferred revenue
Deferred revenue	$ 26,100				$ 21,000				$ 26,100	$ 21,000
Certain Risks and Concentrations
Revenue									$ 604,140	$ 760,748	$ 776,707
Operating Segments \| Applications \| Google Inc. \| Revenue \| Customer Concentration Risk
Certain Risks and Concentrations
Concentration risk (percentage)									87.00%	94.00%	97.00%
Operating Segments \| Applications \| Minimum
Deferred revenue
Revenue recognition period									1 year
Operating Segments \| Applications \| Maximum
Deferred revenue
Revenue recognition period									2 years

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - SCHEDULE OF ESTIMATED USEFUL LIVES OF PROPERTY AND EQUIPMENT (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Property and equipment, net:
Net book value	$ 306,248	$ 302,817
Buildings and leasehold improvements \| Minimum
Property and equipment, net:
Estimated useful lives, minimum (in years)	3 years
Buildings and leasehold improvements \| Maximum
Property and equipment, net:
Estimated useful lives, minimum (in years)	39 years
Computer equipment and capitalized software \| Minimum
Property and equipment, net:
Estimated useful lives, minimum (in years)	2 years
Computer equipment and capitalized software \| Maximum
Property and equipment, net:
Estimated useful lives, minimum (in years)	3 years
Furniture and other equipment \| Minimum
Property and equipment, net:
Estimated useful lives, minimum (in years)	3 years
Furniture and other equipment \| Maximum
Property and equipment, net:
Estimated useful lives, minimum (in years)	12 years
Software and software development costs
Property and equipment, net:
Net book value	$ 46,900	$ 39,600

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)		3 Months Ended		12 Months Ended
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)	Dec. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)	Jun. 30, 2016 USD ($)	Dec. 31, 2016 USD ($) arrangement	Dec. 31, 2015 USD ($) arrangement	Dec. 31, 2014 USD ($) arrangement	Oct. 01, 2016 USD ($)
Intangible Assets and Goodwill
Goodwill		$ 1,924,052,000		$ 1,924,052,000	$ 2,245,364,000	$ 1,754,926,000
Write-down of goodwill				275,367,000	14,056,000	0
Advertising Costs
Advertising expense				$ 1,000,000,000	$ 1,200,000,000	$ 994,700,000
Amortization period for capitalized access fees (in months)				18 months
Redeemable Noncontrolling Interest
Number of put and call arrangements that became exercisable \| arrangement				1	2	0
Accounting Pronouncements Adopted
Debt issuance costs		15,766,000		$ 15,766,000
Accounting Standards Update 2015-03 \| Other non-current assets
Accounting Pronouncements Adopted
Debt issuance costs					$ (21,300,000)
Accounting Standards Update 2015-03 \| Long-term debt
Accounting Pronouncements Adopted
Debt issuance costs					21,300,000
Redeemable Noncontrolling Interests
Redeemable Noncontrolling Interest
Adjustment of redeemable noncontrolling interests and noncontrolling interests to fair value				7,921,000	23,155,000	$ 27,750,000
Nonoperating Income (Expense)
Foreign Currency Translation and Transaction Gains and Losses
Translation gains and losses related to foreign entities					2,200,000
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| ShoeBuy
Intangible Assets and Goodwill
Gain on sale of business	$ 37,500,000	37,500,000
Write-down of goodwill					14,100,000
Publishing
Intangible Assets and Goodwill
Goodwill		0		0	277,192,000	0
Write-down of goodwill				275,367,000	0
Applications
Intangible Assets and Goodwill
Goodwill		447,242,000		447,242,000	447,242,000	0
Write-down of goodwill				0	0
Other
Intangible Assets and Goodwill
Goodwill		0		0	61,980,000	$ 21,719,000
Write-down of goodwill				0	14,056,000
Operating Segments
Intangible Assets and Goodwill
Excess of goodwill over carrying value, more than (as percent)							20.00%
Operating Segments \| Publishing
Intangible Assets and Goodwill
Goodwill		0		0	277,192,000		$ 0
Write-down of indefinite-lived intangible assets			$ 11,600,000		88,000,000
Write-down of goodwill			$ 275,400,000	275,367,000	0
Operating Segments \| Applications
Intangible Assets and Goodwill
Goodwill		447,242,000		447,242,000	447,242,000
Write-down of goodwill				0	0
Operating Segments \| Other
Intangible Assets and Goodwill
Goodwill		0		0	61,980,000
Write-down of goodwill				$ 0	14,056,000
Operating Segments \| Other \| ShoeBuy
Intangible Assets and Goodwill
Write-down of indefinite-lived intangible assets					$ 14,100,000
Goodwill \| Minimum
Intangible Assets and Goodwill
Discount rate				10.00%	12.00%
Goodwill \| Maximum
Intangible Assets and Goodwill
Discount rate				17.50%	22.00%
Indefinite-lived Intangible Assets \| Minimum
Intangible Assets and Goodwill
Discount rate				11.00%	11.00%
Royalty rate				2.00%	1.00%
Indefinite-lived Intangible Assets \| Minimum \| Trade names
Intangible Assets and Goodwill
Royalty rate				2.00%
Indefinite-lived Intangible Assets \| Maximum
Intangible Assets and Goodwill
Discount rate				16.00%	16.00%
Royalty rate				7.00%	9.00%
Indefinite-lived Intangible Assets \| Maximum \| Trade names
Intangible Assets and Goodwill
Royalty rate				6.00%
Match Group, Inc.
Intangible Assets and Goodwill
Market capitalization							$ 4,800,000,000
Excess of market capitalization over carrying value, more than (as percent)							970.00%
Accounting Pronouncements Adopted
Debt issuance costs		$ 13,434,000		$ 13,434,000	$ 16,610,000

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - SCHEDULE OF PRO FORMA INFORMATION (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
New Accounting Pronouncements Pro Forma [Line Items]
Net (loss) earnings	$ 114,117	$ 52,340	$ (190,542)	$ 7,934	$ (31,389)	$ 65,043	$ 57,732	$ 21,988	$ (16,151)	$ 113,374	$ 409,230
Net (earnings) loss attributable to noncontrolling interests									(25,129)	6,098	5,643
Net earnings (loss) attributable to IAC shareholders	$ 102,051	$ 43,162	$ (194,775)	$ 8,282	$ (31,849)	$ 65,611	$ 59,305	$ 26,405	(41,280)	119,472	414,873
Cash flows provided by operating activities attributable to continuing operations									292,377	349,405	424,048
Cash flows used in financing activities attributable to continuing operations									$ (451,065)	$ 734,808	$ (80,980)
Basic earnings (loss) per share from continuing operations (in usd per share)	$ 1.29	$ 0.54	$ (2.45)	$ 0.10	$ (0.38)	$ 0.79	$ 0.72	$ 0.31	$ (0.52)	$ 1.44	$ 2.88
Diluted earnings (loss) per share from continuing operations (in usd per share)	$ 1.18	$ 0.49	$ (2.45)	$ 0.09	$ (0.38)	$ 0.74	$ 0.68	$ 0.30	$ (0.52)	$ 1.33	$ 2.71
Accounting Standards Update 2016-09 \| Pro Forma
New Accounting Pronouncements Pro Forma [Line Items]
Net (loss) earnings									$ 33,255
Net (earnings) loss attributable to noncontrolling interests									(30,024)
Net earnings (loss) attributable to IAC shareholders									3,231
Cash flows provided by operating activities attributable to continuing operations									344,141
Cash flows used in financing activities attributable to continuing operations									$ (502,829)
Basic earnings (loss) per share from continuing operations (in usd per share)									$ 0.10
Diluted earnings (loss) per share from continuing operations (in usd per share)									$ (0.19)

INCOME TAXES - SCHEDULE OF INCOME BEFORE INCOME TAXES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
U.S.	$ (248,622)	$ 79,639	$ 174,792
Foreign	167,348	63,234	95,137
(Loss) earnings from continuing operations before income taxes	$ (81,274)	$ 142,873	$ 269,929

INCOME TAXES - SCHEDULE OF COMPONENTS OF INCOME TAX EXEPENSE (BENEFIT) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current income tax provision (benefit):
Federal	$ 23,343	$ 67,505	$ (45,842)
State	3,662	7,785	(14,787)
Foreign	27,242	14,012	19,132
Current income tax provision (benefit)	54,247	89,302	(41,497)
Deferred income tax (benefit) provision:
Federal	(100,798)	(50,254)	74,255
State	(9,518)	(3,727)	3,090
Foreign	(8,865)	(5,805)	(476)
Deferred income tax (benefit) provision	(119,181)	(59,786)	76,869
Income tax (benefit) provision	(64,934)	29,516	35,372
Excess tax benefits from stock-based awards	$ 51,764	$ 56,418	$ 44,957

INCOME TAXES - SCHEDULE OF INCOME TAXES (PAYABLE) RECEIVABLE AND DEFERRED TAX (LIABILITIES) ASSETS (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Income Taxes (Payable) Receivable and Deferred Tax (Liabilities) Assets
Other current assets	$ 41,352	$ 26,793
Income taxes payable	(33,528)	(33,692)
Net income taxes receivable	3,651
Net income taxes (payable)		(38,364)
Deferred income taxes	(228,798)	(348,773)
Net deferred tax liabilities	(226,287)	(346,803)
Other current assets
Income Taxes (Payable) Receivable and Deferred Tax (Liabilities) Assets
Other current assets	41,352	26,793
Other non-current assets
Income Taxes (Payable) Receivable and Deferred Tax (Liabilities) Assets
Other non-current assets	1,615	1,564
Other non-current assets	2,511	1,970
Accrued expenses and other current liabilities
Income Taxes (Payable) Receivable and Deferred Tax (Liabilities) Assets
Accrued expenses and other current liabilities	(5,788)	(33,029)
Income taxes payable
Income Taxes (Payable) Receivable and Deferred Tax (Liabilities) Assets
Income taxes payable	(33,528)	(33,692)
Deferred income taxes
Income Taxes (Payable) Receivable and Deferred Tax (Liabilities) Assets
Deferred income taxes	$ (228,798)	$ (348,773)

INCOME TAXES - SCHEDULE OF DEFERRED TAX ASSETS AND LIABILITIES (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets:
Accrued expenses	$ 40,273	$ 36,418
Net operating loss carryforwards	63,948	68,048
Tax credit carryforwards	11,570	13,753
Stock-based compensation	87,914	76,285
Cost method investments	9,955	6,251
Equity method investments	17,455	17,105
Intangible and other assets	13,708	0
Other	20,089	16,057
Total deferred tax assets	264,912	233,917
Less valuation allowance	(88,170)	(90,482)
Net deferred tax assets	176,742	143,435
Deferred tax liabilities:
Investment in subsidiaries	(385,474)	(382,254)
Intangible and other assets	0	(88,846)
Other	(17,555)	(19,138)
Total deferred tax liabilities	(403,029)	(490,238)
Net deferred tax liabilities	$ (226,287)	$ (346,803)

INCOME TAXES (Details) $ in Millions	12 Months Ended
INCOME TAXES (Details) $ in Millions	Dec. 31, 2016 USD ($)
Operating Loss Carryforwards
Income tax benefit related to net operating loss carryforwards	$ (19.8)
Tax Credit Carryforwards
Tax credit carryforwards	18.3
Tax credit carryforwards that can be carried forward indefinitely	11.0
Tax credit carryforwards expiring primarily by 2018	7.3
Valuation Allowance
Decrease in valuation allowance	2.3
Valuation allowance at end of period	88.2
Earnings of Foreign Subsidiaries
Undistributed earnings of foreign subsidiaries	680.2
Deferred tax liabilities related to repatriation of foreign earnings	169.3
Federal
Operating Loss Carryforwards
Net operating loss carryforwards	71.8
Capital loss carryforwards	16.5
State
Operating Loss Carryforwards
Net operating loss carryforwards	123.5
Capital loss carryforwards	26.2
Tax Credit Carryforwards
Tax credit carryforwards	5.3
State \| Research
Tax Credit Carryforwards
Tax credit carryforwards	9.1
Foreign
Operating Loss Carryforwards
Net operating loss carryforwards	126.3
Net operating loss carryforwards not subject to expiration	112.4
Net operating loss carryforwards subject to expiration within 20 years	13.9
Tax Credit Carryforwards
Tax credit carryforwards	$ 3.9

INCOME TAXES - SCHEDULE OF EFFECTIVE INCOME TAX RATE RECONCILIATION (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Income tax (benefit) provision at the federal statutory rate of 35%	$ (28,446)	$ 50,006	$ 94,475
Change in tax reserves, net	(828)	(2,928)	(86,151)
Foreign income taxed at a different statutory tax rate	(20,277)	(6,077)	(10,456)
State income taxes, net of effect of federal tax benefit	(3,880)	2,208	7,240
Realization of certain deferred tax assets	0	(22,440)	0
Non-taxable contingent consideration fair value adjustments	1,020	(4,517)	(4,439)
Non-taxable foreign currency exchange gains	(6,837)	(4,306)	0
Unbenefited losses	1,730	4,264	5,433
Non-deductible goodwill associated with the sale of Urbanspoon	0	0	6,982
Non-taxable sale and non-deductible goodwill associated with ShoeBuy	(13,142)	4,920	0
Goodwill impairment of Publishing	10,649	0	0
Non-deductible impairments for certain cost method investments	3,489	2,341	23,310
Deferred tax adjustment for enacted changes in tax laws and rates	(4,594)	0	0
Other, net	(3,818)	6,045	(1,022)
Income tax (benefit) provision	$ (64,934)	$ 29,516	$ 35,372
Federal statutory income tax rate (percentage)	35.00%	35.00%	35.00%

INCOME TAXES - SCHEDULE OF INCOME TAX CONTINGENCIES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns
Balance at beginning of the period	$ 40,808	$ 30,386	$ 275,813
Additions based on tax positions related to the current year	2,033	4,227	2,159
Additions for tax positions of prior years	2,676	14,467	1,622
Reductions for tax positions of prior years	(743)	(1,556)	(5,611)
Settlements	(5,107)	0	(5,092)
Expiration of applicable statutes of limitations	(1,295)	(6,716)	(238,505)
Balance at end of the period	38,372	40,808	30,386
Income Tax Contingency
Interest on income taxes accrued	2,600	2,500
Income tax penalties accrued	1,700	2,200
Unrecognized tax benefits including tax interest accrued	41,000	43,400
Tax positions for which the ultimate deductibility is highly certain but timing is uncertain	37,700	41,000
Change in unrecognized tax benefits unrelated to Federal income taxes statute of limitations expiring within twelve months of current reporting period	6,900
Continuing Operations
Income Tax Contingency
Unrecognized tax benefit (expense) net of related deferred taxes	(400)	(100)	58,500
Deferred taxes for interest on unrecognized tax benefits (continuing operations)	200	100	35,300
Discontinued Operations
Income Tax Contingency
Unrecognized tax benefit (expense) net of related deferred taxes	100	100	19,700
Deferred taxes for interest on unrecognized tax benefits (discontinued operations)	$ 100	$ 100	$ 11,700

BUSINESS COMBINATION (Details) - PlentyOfFish - USD ($) $ in Millions		12 Months Ended
	Oct. 28, 2015	Dec. 31, 2015
Business Acquisition
Cash acquisition price	$ 574.1
Working capital adjustment	$ 0.9
Revenue		$ 8.0
Net earnings		$ 0.7

BUSINESS COMBINATION - ESTIMATED FAIR VALUE OF ASSETS ACQUIRED AND LIABILITIES ASSUMED (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Oct. 28, 2015	Dec. 31, 2014
Business Acquisition
Goodwill	$ 1,924,052	$ 2,245,364		$ 1,754,926
PlentyOfFish
Business Acquisition
Cash and cash equivalents			$ 4,626
Other current assets			4,460
Computer and other equipment			2,990
Goodwill			488,644
Intangible assets			84,100
Other non-current assets			1,073
Total assets			585,893
Current liabilities			(6,418)
Other long-term liabilities			(5,325)
Net assets acquired			$ 574,150

BUSINESS COMBINATION - INTANGIBLE ASSETS ACQUIRED AS PART OF BUSINESS COMBINATION (Details) $ in Thousands	Oct. 28, 2015 USD ($)
Customer relationships \| Maximum
Business Acquisition
Estimated weighted-average useful life (in years)	1 year
New registrants \| Maximum
Business Acquisition
Estimated weighted-average useful life (in years)	1 year
Non-compete agreement
Business Acquisition
Estimated weighted-average useful life (in years)	5 years
Developed technology
Business Acquisition
Estimated weighted-average useful life (in years)	2 years
PlentyOfFish
Business Acquisition
Indefinite-lived trade name	$ 66,300
Total intangible assets acquired	84,100
PlentyOfFish \| Customer relationships
Business Acquisition
Finite-lived intangible assets	10,100
PlentyOfFish \| New registrants
Business Acquisition
Finite-lived intangible assets	3,100
PlentyOfFish \| Non-compete agreement
Business Acquisition
Finite-lived intangible assets	3,000
PlentyOfFish \| Developed technology
Business Acquisition
Finite-lived intangible assets	$ 1,600

BUSINESS COMBINATION - SCHEDULE OF PRO FORMA FINANCIAL INFORMATION (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition, Pro Forma Information [Abstract]
Revenue	$ 3,309,287	$ 3,157,893
Net earnings attributable to IAC shareholders	$ 155,599	$ 413,299
Basic earnings per share attributable to IAC shareholders (in usd per share)	$ 1.88	$ 4.96
Diluted earnings per share attributable to IAC shareholders (in usd per share)	$ 1.76	$ 4.67

BUSINESS COMBINATION - PRO FORMA ADJUSTMENTS (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment
Amortization of intangible assets									$ 79,426	$ 139,952	$ 57,926
Revenue	$ 811,162	$ 764,102	$ 745,439	$ 819,179	$ 848,728	$ 838,561	$ 771,132	$ 772,512	$ 3,139,882	3,230,933	3,109,547
Acquisition-related Costs
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment
Amortization of intangible assets										$ 1,400	14,600
Revenue											$ (5,100)

GOODWILL AND INTANGIBLE ASSETS - SCHEDULE OF GOODWILL AND INTANGIBLE ASSETS, NET (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 1,924,052	$ 2,245,364	$ 1,754,926
Intangible assets with indefinite lives	320,645	380,137
Intangible assets with definite lives, net	34,806	60,691
Total goodwill and intangible assets, net	$ 2,279,503	$ 2,686,192

GOODWILL AND INTANGIBLE ASSETS - SCHEDULE OF GOODWILL BY REPORTING UNIT (Details) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2015 USD ($) segment	Sep. 30, 2015 USD ($) segment	Dec. 31, 2016 USD ($) segment	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Goodwill
Balance at beginning of period		$ 1,754,926	$ 2,245,364	$ 1,754,926
Additions			32,237	552,864
(Deductions)			(67,811)
Impairment			(275,367)	(14,056)	$ 0
Foreign Exchange Translation			(10,371)	(48,370)
Allocation of IAC's former Search & Applications Segment Goodwill Based on Relative Fair Value				0
Balance at end of period	$ 2,245,364		$ 1,924,052	2,245,364	1,754,926
Number of reportable segments \| segment			6
Search & Applications
Goodwill
Balance at beginning of period		$ 774,822	$ 0	774,822
Additions				1,450
Impairment				0
Foreign Exchange Translation				(1,230)
Allocation of IAC's former Search & Applications Segment Goodwill Based on Relative Fair Value				(775,042)
Balance at end of period	$ 0			0	774,822
Number of operating segments \| segment		1
Number of reportable segments \| segment		1
Number of operating segments after split \| segment	3
Number of reportable segments after split \| segment	3
Match Group
Goodwill
Balance at beginning of period		$ 791,474	1,293,109	791,474
Additions			603	547,910
(Deductions)			(3,063)
Impairment			0	0
Foreign Exchange Translation			(9,689)	(46,275)
Allocation of IAC's former Search & Applications Segment Goodwill Based on Relative Fair Value				0
Balance at end of period	$ 1,293,109		1,280,960	1,293,109	791,474
HomeAdvisor
Goodwill
Balance at beginning of period		151,321	150,251	151,321
Additions			21,985	0
(Deductions)			0
Impairment			0	0
Foreign Exchange Translation			(1,625)	(1,070)
Allocation of IAC's former Search & Applications Segment Goodwill Based on Relative Fair Value				0
Balance at end of period	150,251		170,611	150,251	151,321
Video
Goodwill
Balance at beginning of period		15,590	15,590	15,590
Additions			9,649	0
(Deductions)			0
Impairment			0	0
Foreign Exchange Translation			0	0
Allocation of IAC's former Search & Applications Segment Goodwill Based on Relative Fair Value				0
Balance at end of period	15,590		25,239	15,590	15,590
Video \| Connected Ventures
Goodwill
Accumulated goodwill impairment loss	11,600		11,600	11,600
Applications
Goodwill
Balance at beginning of period		0	447,242	0
Additions			0	0
(Deductions)			0
Impairment			0	0
Foreign Exchange Translation			0	0
Allocation of IAC's former Search & Applications Segment Goodwill Based on Relative Fair Value				447,242
Balance at end of period	447,242		447,242	447,242	0
Accumulated goodwill impairment loss	529,100		529,100	529,100
Publishing
Goodwill
Balance at beginning of period		0	277,192	0
Additions			0	3,504
(Deductions)			(1,968)
Impairment			(275,367)	0
Foreign Exchange Translation			143	963
Allocation of IAC's former Search & Applications Segment Goodwill Based on Relative Fair Value				272,725
Balance at end of period	277,192		0	277,192	0
Accumulated goodwill impairment loss	322,600		598,000	322,600
Other
Goodwill
Balance at beginning of period		$ 21,719	61,980	21,719
Additions			0	0
(Deductions)			(62,780)
Impairment			0	(14,056)
Foreign Exchange Translation			800	(758)
Allocation of IAC's former Search & Applications Segment Goodwill Based on Relative Fair Value				55,075
Balance at end of period	61,980		$ 0	61,980	$ 21,719
Other \| PriceRunner
Goodwill
Accumulated goodwill impairment loss	65,200			65,200
Other \| ShoeBuy
Goodwill
Accumulated goodwill impairment loss	$ 42,100			$ 42,100

GOODWILL AND INTANGIBLE ASSETS - SCHEDULE OF INTANGIBLE ASSETS WITH DEFINITE LIVES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Intangible assets with definite lives
Gross Carrying Amount	$ 136,974	$ 194,237
Accumulated Amortization	(102,168)	(133,546)
Total	$ 34,806	$ 60,691
Weighted-average useful life (years)	2 years 9 months 12 days	3 years 3 months 12 days
Trade names
Intangible assets with definite lives
Gross Carrying Amount	$ 63,855	$ 32,123
Accumulated Amortization	(52,927)	(26,268)
Total	$ 10,928	$ 5,855
Weighted-average useful life (years)	1 year 9 months 12 days	2 years 6 months 12 days
Technology
Intangible assets with definite lives
Gross Carrying Amount	$ 38,602	$ 55,487
Accumulated Amortization	(27,667)	(37,012)
Total	$ 10,935	$ 18,475
Weighted-average useful life (years)	3 years 4 months 12 days	3 years 2 months 12 days
Content
Intangible assets with definite lives
Gross Carrying Amount	$ 14,802	$ 62,082
Accumulated Amortization	(8,965)	(48,937)
Total	$ 5,837	$ 13,145
Weighted-average useful life (years)	4 years 3 months 12 days	4 years 1 month 12 days
Customer lists
Intangible assets with definite lives
Gross Carrying Amount	$ 12,485	$ 28,836
Accumulated Amortization	(9,997)	(13,078)
Total	$ 2,488	$ 15,758
Weighted-average useful life (years)	3 years 8 months 12 days	2 years 1 month 12 days
Advertiser and supplier relationships and other
Intangible assets with definite lives
Gross Carrying Amount	$ 7,230	$ 15,709
Accumulated Amortization	(2,612)	(8,251)
Total	$ 4,618	$ 7,458
Weighted-average useful life (years)	4 years 6 months 12 days	4 years 2 months 12 days

GOODWILL AND INTANGIBLE ASSETS - SCHEDULE OF EXPECTED AMORTIZATION OF INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
2017	$ 23,815
2018	6,922
2019	2,866
2020	1,203
Total	$ 34,806	$ 60,691

MARKETABLE SECURITIES - SCHEDULE OF CURRENT AVAILABLE-FOR-SALE MARKETABLE SECURITIES (Details) $ in Thousands	Dec. 31, 2016 USD ($) investment	Dec. 31, 2015 USD ($)
Schedule of Available-for-sale Marketable Securities
Amortized Cost	$ 89,350	$ 36,424
Gross Unrealized Gains	2	2,963
Gross Unrealized Losses	(10)	(187)
Fair Value	89,342	39,200
Aggregate fair value of available-for-sale securities with unrealized losses	$ 37,000
Number of current available-for-sale marketable debt securities in continuous unrealized loss position for greater than twelve months \| investment	0
Commercial paper
Schedule of Available-for-sale Marketable Securities
Amortized Cost	$ 49,797
Gross Unrealized Gains	0
Gross Unrealized Losses	0
Fair Value	49,797
Treasury discount notes
Schedule of Available-for-sale Marketable Securities
Amortized Cost	34,978
Gross Unrealized Gains	0
Gross Unrealized Losses	(4)
Fair Value	34,974
Corporate debt securities
Schedule of Available-for-sale Marketable Securities
Amortized Cost	4,575	27,765
Gross Unrealized Gains	2	0
Gross Unrealized Losses	(6)	(187)
Fair Value	4,571	27,578
Equity security
Schedule of Available-for-sale Marketable Securities
Amortized Cost		8,659
Gross Unrealized Gains		2,963
Gross Unrealized Losses		0
Fair Value		$ 11,622
Total debt securities
Schedule of Available-for-sale Marketable Securities
Amortized Cost	89,350
Gross Unrealized Gains	2
Gross Unrealized Losses	(10)
Fair Value	$ 89,342

MARKETABLE SECURITIES - SCHEDULE OF PROCEEDS FROM MATURITIES AND SALES OF CURRENT AVAILABLE-FOR-SALE-MARKETABLE SECURITIES (Details 2) - USD ($)		3 Months Ended	12 Months Ended
	Oct. 28, 2015	Jun. 30, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Marketable Securities [Abstract]
Proceeds from maturities and sales of available-for-sale marketable securities			$ 279,485,000	$ 218,976,000	$ 25,223,000
Gross realized gains			3,556,000	443,000	3,362,000
Gross realized losses		$ 300,000	$ 0	$ 0	$ 0
PlentyOfFish
Business Acquisition
Purchase price	$ 574,100,000
Match Group \| PlentyOfFish
Business Acquisition
Purchase price	$ 575,000,000

LONG-TERM INVESTMENTS - SCHEDULE OF LONG-TERM INVESTMENTS (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Components of long-term investments
Total long-term investments	$ 122,810	$ 137,386
Cost method investments
Components of long-term investments
Total long-term investments	116,133	114,532
Equity method investments
Components of long-term investments
Total long-term investments	6,677	11,262
Marketable equity security
Components of long-term investments
Total long-term investments	0	7,542
Auction rate security
Components of long-term investments
Total long-term investments	$ 0	$ 4,050

LONG-TERM INVESTMENTS (Details) $ in Thousands	12 Months Ended
LONG-TERM INVESTMENTS (Details) $ in Thousands	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($) investment
Long-term investments
Gross unrealized gain	$ 2	$ 2,963
Cost method investments
Long-term investments
After tax other-than-temporary impairment charge	$ 10,000	4,500	$ 66,600
Ownership percentage	21.00%
Equity method investments
Long-term investments
After tax other-than-temporary impairment charge	$ 600		$ 4,200
Number of investments with other-than-temporary impairment charges (investment) \| investment			1
Marketable equity security
Long-term investments
Cost basis		5,000
Gross unrealized gain		$ 2,600

FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS - SCHEDULE OF ASSETS AND LIABILITIES MEASURED AT FAIR VALUE ON A RECURRING BASIS (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Assets:
Marketable securities	$ 89,342	$ 39,200
Fair Value on a Recurring Basis
Assets:
Total	984,635	1,080,096
Liabilities:
Contingent consideration arrangements	(33,871)	(33,873)
Fair Value on a Recurring Basis \| Money market funds
Assets:
Cash equivalents	667,662	601,848
Fair Value on a Recurring Basis \| Time deposits
Assets:
Cash equivalents	79,000	125,038
Fair Value on a Recurring Basis \| Treasury discount notes
Assets:
Cash equivalents	24,991
Marketable securities	34,974
Fair Value on a Recurring Basis \| Commercial paper
Assets:
Cash equivalents	123,640	302,418
Marketable securities	49,797
Fair Value on a Recurring Basis \| Corporate debt securities
Assets:
Marketable securities	4,571	27,578
Fair Value on a Recurring Basis \| Equity security
Assets:
Marketable securities		11,622
Long-term investments		7,542
Fair Value on a Recurring Basis \| Auction rate security
Assets:
Long-term investments		4,050
Fair Value on a Recurring Basis \| Level 1
Assets:
Total	727,627	621,012
Liabilities:
Contingent consideration arrangements	0	0
Fair Value on a Recurring Basis \| Level 1 \| Money market funds
Assets:
Cash equivalents	667,662	601,848
Fair Value on a Recurring Basis \| Level 1 \| Time deposits
Assets:
Cash equivalents	0	0
Fair Value on a Recurring Basis \| Level 1 \| Treasury discount notes
Assets:
Cash equivalents	24,991
Marketable securities	34,974
Fair Value on a Recurring Basis \| Level 1 \| Commercial paper
Assets:
Cash equivalents	0	0
Marketable securities	0
Fair Value on a Recurring Basis \| Level 1 \| Corporate debt securities
Assets:
Marketable securities	0	0
Fair Value on a Recurring Basis \| Level 1 \| Equity security
Assets:
Marketable securities		11,622
Long-term investments		7,542
Fair Value on a Recurring Basis \| Level 1 \| Auction rate security
Assets:
Long-term investments		0
Fair Value on a Recurring Basis \| Level 2
Assets:
Total	257,008	455,034
Liabilities:
Contingent consideration arrangements	0	0
Fair Value on a Recurring Basis \| Level 2 \| Money market funds
Assets:
Cash equivalents	0	0
Fair Value on a Recurring Basis \| Level 2 \| Time deposits
Assets:
Cash equivalents	79,000	125,038
Fair Value on a Recurring Basis \| Level 2 \| Treasury discount notes
Assets:
Cash equivalents	0
Marketable securities	0
Fair Value on a Recurring Basis \| Level 2 \| Commercial paper
Assets:
Cash equivalents	123,640	302,418
Marketable securities	49,797
Fair Value on a Recurring Basis \| Level 2 \| Corporate debt securities
Assets:
Marketable securities	4,571	27,578
Fair Value on a Recurring Basis \| Level 2 \| Equity security
Assets:
Marketable securities		0
Long-term investments		0
Fair Value on a Recurring Basis \| Level 2 \| Auction rate security
Assets:
Long-term investments		0
Fair Value on a Recurring Basis \| Level 3
Assets:
Total	0	4,050
Liabilities:
Contingent consideration arrangements	(33,871)	(33,873)
Fair Value on a Recurring Basis \| Level 3 \| Money market funds
Assets:
Cash equivalents	0	0
Fair Value on a Recurring Basis \| Level 3 \| Time deposits
Assets:
Cash equivalents	0	0
Fair Value on a Recurring Basis \| Level 3 \| Treasury discount notes
Assets:
Cash equivalents	0
Marketable securities	0
Fair Value on a Recurring Basis \| Level 3 \| Commercial paper
Assets:
Cash equivalents	0	0
Marketable securities	0
Fair Value on a Recurring Basis \| Level 3 \| Corporate debt securities
Assets:
Marketable securities	$ 0	0
Fair Value on a Recurring Basis \| Level 3 \| Equity security
Assets:
Marketable securities		0
Long-term investments		0
Fair Value on a Recurring Basis \| Level 3 \| Auction rate security
Assets:
Long-term investments		$ 4,050

FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS - SCHEDULE OF CHANGES IN LEVEL 3 ASSETS AND LIABILITIES MEASURED AT FAIR VALUE ON A RECURRING BASIS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Auction Rate Security
Other	$ 0	$ 0
Contingent Consideration Arrangements
Other	2,133	0
Contingent Consideration Arrangements
Contingent Consideration Arrangements
Balance at beginning of period	(33,873)	(30,140)
Fair value adjustments	(2,555)	15,461
Foreign currency exchange gains	0	626
Included in other comprehensive income (loss)	(1,571)	1,872
Fair value at date of acquisition	(185)	(27,442)
Settlements	2,180	5,750
Proceeds from sale	0	0
Balance at end of period	(33,871)	(33,873)
Auction rate security
Auction Rate Security
Balance at beginning of period	4,050	6,070
Fair value adjustments	0	0
Foreign currency exchange gains	0	0
Included in other comprehensive income (loss)	5,950	(2,020)
Fair value at date of acquisition	0	0
Settlements	0	0
Proceeds from sale	(10,000)	0
Balance at end of period	$ 0	$ 4,050

FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS (Details) $ in Millions	12 Months Ended
	Dec. 31, 2016 USD ($) arrangement	Dec. 31, 2015 USD ($)
Contingent Consideration Arrangments
Current portion of contingent consideration	$ 33.4	$ 2.6
Noncurrent portion of contingent consideration	$ 0.4	$ 31.2
Contingent Consideration Arrangements
Contingent Consideration Arrangments
Number of contingent consideration arrangements related to business acquisitions \| arrangement	7
Maximum amount of contingent consideration	$ 132.8
Fair value of contingent consideration	$ 33.9
Contingent Consideration Arrangements \| Minimum
Contingent Consideration Arrangments
Discount rate	12.00%	12.00%
Contingent Consideration Arrangements \| Maximum
Contingent Consideration Arrangments
Discount rate	25.00%	25.00%

FINANCIAL MEASUREMENTS AND FINANCIAL INSTRUMENTS - CARRYING VALUE AND FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 3) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current portion of long-term debt \| Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Long-term debt, fair value	$ (20,000)	$ (40,000)
Current portion of long-term debt \| Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Long-term debt, fair value	(20,311)	(39,850)
Long-term debt, net of current portion \| Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Long-term debt, fair value	(1,582,484)	(1,726,954)
Long-term debt, net of current portion \| Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Long-term debt, fair value	$ (1,657,861)	$ (1,761,601)

LONG-TERM DEBT - SCHEDULE OF LONG-TERM DEBT (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Debt Instrument
Total long-term debt	$ 1,623,495
Less: Current portion of long-term debt	20,000	$ 40,000
Less: Unamortized original issue discount and original issue premium, net	5,245
Less: Unamortized debt issuance costs	15,766
Long-term debt, net of current portion	$ 1,582,484	1,726,954
Number of days prior to maturity date	91 days
Match Group, Inc.
Debt Instrument
Total long-term debt	$ 1,195,172	1,245,172
Less: Current portion of long-term debt	0	40,000
Less: Unamortized original issue discount and original issue premium, net	5,245	11,691
Less: Unamortized debt issuance costs	13,434	16,610
Long-term debt, net of current portion	1,176,493	1,176,871
Match Group, Inc. \| Senior Notes \| 6.75% Senior Notes due December 15, 2022 (the 2015 Match Group Senior Notes); interest payable each June 15 and December 15, which commenced on June 15, 2016
Debt Instrument
Total long-term debt	$ 445,172	445,172
Stated interest rate (as a percent)	6.75%
Match Group, Inc. \| Senior Notes \| 6.375% Senior Notes due June 1, 2024 (the 2016 Match Group Senior Notes); interest payable each June 1 and December 1, which commenced on December 1, 2016
Debt Instrument
Total long-term debt	$ 400,000
Stated interest rate (as a percent)	6.375%
Match Group, Inc. \| Term Loan \| Match Group Term Loan due November 16, 2022
Debt Instrument
Total long-term debt	$ 350,000	800,000
IAC
Debt Instrument
Total long-term debt	428,323	554,732
Less: Current portion of long-term debt	20,000	0
Less: Unamortized debt issuance costs	2,332	4,649
Long-term debt, net of current portion	405,991	550,083
IAC \| Senior Notes \| 4.875% Senior Notes due November 30, 2018 (the 2013 Senior Notes); interest payable each May 30 and November 30, which commenced on May 30, 2014
Debt Instrument
Total long-term debt	$ 390,214	500,000
Stated interest rate (as a percent)	4.875%
IAC \| Senior Notes \| 4.75% Senior Notes due December 15, 2022 (the 2012 Senior Notes); interest payable each June 15 and December 15, which commenced on June 15, 2013
Debt Instrument
Total long-term debt	$ 38,109	$ 54,732
Stated interest rate (as a percent)	4.75%

LONG-TERM DEBT (Details)					12 Months Ended
LONG-TERM DEBT (Details)	Dec. 08, 2016 USD ($)	Jun. 01, 2016 USD ($)	Mar. 31, 2016 USD ($)	Nov. 16, 2015 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Debt Instrument
Debt instrument, outstanding balance					$ 1,623,495,000
Repurchase and redemption of Senior Notes					$ 126,409,000	$ 80,000,000	$ 0
Senior Notes \| 6.375% Senior Notes due June 1, 2024 (the 2016 Match Group Senior Notes); interest payable each June 1 and December 1, which commenced on December 1, 2016 \| Maximum
Debt Instrument
Maximum leverage ratio					5.0
Senior Notes \| 6.75% Senior Notes due December 15, 2022 (the 2015 Match Group Senior Notes); interest payable each June 15 and December 15, which commenced on June 15, 2016 \| Maximum
Debt Instrument
Maximum leverage ratio					5.0
Senior Notes \| 4.875% Senior Notes due November 30, 2018 (the 2013 Senior Notes); interest payable each May 30 and November 30, which commenced on May 30, 2014 \| Maximum
Debt Instrument
Maximum leverage ratio					3.0
Revolving Credit Facility \| IAC Credit Facility
Debt Instrument
Maximum borrowing capacity					$ 300,000,000
Credit facility, borrowings outstanding					$ 0	0
Annual commitment fee (as a percent)					0.35%
Revolving Credit Facility \| IAC Credit Facility \| Maximum
Debt Instrument
Maximum leverage ratio					3.25
Match Group, Inc.
Debt Instrument
Debt instrument, outstanding balance					$ 1,195,172,000	1,245,172,000
Match Group, Inc. \| Senior Notes \| 6.375% Senior Notes due June 1, 2024 (the 2016 Match Group Senior Notes); interest payable each June 1 and December 1, which commenced on December 1, 2016
Debt Instrument
Debt instrument, face amount		$ 400,000,000
Debt instrument, outstanding balance					400,000,000
Match Group, Inc. \| Senior Notes \| 6.75% Senior Notes due December 15, 2022 (the 2015 Match Group Senior Notes); interest payable each June 15 and December 15, which commenced on June 15, 2016
Debt Instrument
Debt instrument, outstanding balance					445,172,000	445,172,000
Match Group, Inc. \| Term Loan \| Match Group Term Loan due November 16, 2022
Debt Instrument
Debt instrument, face amount				$ 800,000,000
Repayment of debt	$ 40,000,000	$ 400,000,000	$ 10,000,000		440,000,000
Debt instrument, outstanding balance					$ 350,000,000	800,000,000
Debt instrument, interest rate					4.20%
Match Group, Inc. \| Term Loan \| Match Group Term Loan due November 16, 2022 \| Base Rate
Debt Instrument
Basis spread on variable rate (as a percent)				2.25%
Match Group, Inc. \| Term Loan \| Match Group Term Loan due November 16, 2022 \| LIBOR
Debt Instrument
Basis spread on variable rate (as a percent)				3.25%
Variable rate floor (as a percent)				0.75%
Match Group, Inc. \| Revolving Credit Facility \| Match Group Credit Agreement
Debt Instrument
Maximum borrowing capacity					$ 500,000,000
Credit facility, borrowings outstanding					$ 0	0
Annual commitment fee (as a percent)					0.30%
Match Group, Inc. \| Revolving Credit Facility \| Match Group Credit Agreement \| Maximum
Debt Instrument
Maximum leverage ratio					5.0
Match Group, Inc. \| Revolving Credit Facility \| Match Group Credit Agreement \| Minimum
Debt Instrument
Minimum interest coverage ratio					2.5
IAC
Debt Instrument
Debt instrument, outstanding balance					$ 428,323,000	554,732,000
Repurchase and redemption of Senior Notes					126,409,000	0
IAC \| Senior Notes \| 4.875% Senior Notes due November 30, 2018 (the 2013 Senior Notes); interest payable each May 30 and November 30, which commenced on May 30, 2014
Debt Instrument
Debt instrument, outstanding balance					390,214,000	500,000,000
Repurchase and redemption of Senior Notes					109,800,000
IAC \| Senior Notes \| 4.75% Senior Notes due December 15, 2022 (the 2012 Senior Notes); interest payable each June 15 and December 15, which commenced on June 15, 2013
Debt Instrument
Debt instrument, outstanding balance					38,109,000	$ 54,732,000
Repurchase and redemption of Senior Notes					$ 16,600,000

LONG-TERM DEBT - SCHEDULE OF DEBT INSTRUMENT REDEMPTION (Details) - Senior Notes	12 Months Ended
	Dec. 31, 2016
6.375% Senior Notes due June 1, 2024 (the 2016 Match Group Senior Notes); interest payable each June 1 and December 1, which commenced on December 1, 2016 \| Redemption, Period One
Debt Instrument
Redemption percentage	104.781%
6.375% Senior Notes due June 1, 2024 (the 2016 Match Group Senior Notes); interest payable each June 1 and December 1, which commenced on December 1, 2016 \| Redemption, Period Two
Debt Instrument
Redemption percentage	103.188%
6.375% Senior Notes due June 1, 2024 (the 2016 Match Group Senior Notes); interest payable each June 1 and December 1, which commenced on December 1, 2016 \| Redemption, Period Three
Debt Instrument
Redemption percentage	101.594%
6.375% Senior Notes due June 1, 2024 (the 2016 Match Group Senior Notes); interest payable each June 1 and December 1, which commenced on December 1, 2016 \| Redemption, Period Four
Debt Instrument
Redemption percentage	100.00%
6.75% Senior Notes due December 15, 2022 (the 2015 Match Group Senior Notes); interest payable each June 15 and December 15, which commenced on June 15, 2016 \| Redemption, Period One
Debt Instrument
Redemption percentage	102.375%
6.75% Senior Notes due December 15, 2022 (the 2015 Match Group Senior Notes); interest payable each June 15 and December 15, which commenced on June 15, 2016 \| Redemption, Period Two
Debt Instrument
Redemption percentage	101.583%
6.75% Senior Notes due December 15, 2022 (the 2015 Match Group Senior Notes); interest payable each June 15 and December 15, which commenced on June 15, 2016 \| Redemption, Period Three
Debt Instrument
Redemption percentage	100.792%
6.75% Senior Notes due December 15, 2022 (the 2015 Match Group Senior Notes); interest payable each June 15 and December 15, which commenced on June 15, 2016 \| Redemption, Period Four
Debt Instrument
Redemption percentage	100.00%
4.875% Senior Notes due November 30, 2018 (the 2013 Senior Notes); interest payable each May 30 and November 30, which commenced on May 30, 2014 \| Redemption, Period One
Debt Instrument
Redemption percentage	101.625%
4.875% Senior Notes due November 30, 2018 (the 2013 Senior Notes); interest payable each May 30 and November 30, which commenced on May 30, 2014 \| Redemption, Period Two
Debt Instrument
Redemption percentage	100.00%

LONG-TERM DEBT - SCHEDULE OF AGGREGATE CONTRACTUAL MATURITIES OF LONG-TERM DEBT (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Debt Disclosure [Abstract]
2018	$ 390,214
2022	833,281
2024	400,000
Total long-term debt	1,623,495
Less: Current portion of long-term debt	20,000	$ 40,000
Less: Unamortized original issue discount and original issue premium, net	5,245
Less: Unamortized debt issuance costs	15,766
Long-term debt, net of current portion	$ 1,582,484	$ 1,726,954

SHAREHOLDERS' EQUITY (Details) $ in Thousands	12 Months Ended
SHAREHOLDERS' EQUITY (Details) $ in Thousands	Dec. 31, 2016 USD ($) vote shares	Dec. 31, 2015 USD ($) shares	Dec. 31, 2014 shares	May 03, 2016 shares
Class of Stock
Percentage of the total number of directors the holders of common stock are entitled to elect	25.00%
Common Stock Repurchases
Trade date fair value of shares acquired during period \| $	$ 315,250	$ 200,000
Common Stock
Class of Stock
Votes per each share of stock \| vote	1
Common stock reserved	17,900,000
Common Stock Repurchases
Treasury stock acquired during period (in shares)	6,300,000	3,000,000	0
Trade date fair value of shares acquired during period \| $	$ 315,300	$ 200,000
Number of shares authorized to be repurchased				10,000,000.0
Remaining number of shares authorized to be repurchased	9,300,000
Class B Convertible Common Stock
Class of Stock
Votes per each share of stock \| vote	10

ACCUMULATED OTHER COMPREHENSIVE LOSS - SCHEDULE OF ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Accumulated Other Comprehensive Loss
Balance at beginning of period	$ 2,215,825	$ 1,993,142
Other comprehensive income (loss) before reclassifications, net of tax (provision) benefit related to unrealized gains (losses) on available-for-sale securities	(42,088)	(62,069)
Amounts reclassified to earnings	6,937	(2,334)
Net current period other comprehensive (loss) income	(35,151)	(64,403)
Reallocation of accumulated other comprehensive loss (income) related to the noncontrolling interests created in the Match Group IPO	21,131
Balance at end of period	2,010,670	2,215,825
Other comprehensive (loss) income, net of tax provision (benefit) related to unrealized gains (losses) on available-for-sale securities	600	700
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Loss
Balance at beginning of period	(154,645)	(86,848)
Other comprehensive income (loss) before reclassifications, net of tax (provision) benefit related to unrealized gains (losses) on available-for-sale securities	(46,943)	(65,606)
Amounts reclassified to earnings	9,850	(2,191)
Net current period other comprehensive (loss) income	(37,093)	(67,797)
Reallocation of accumulated other comprehensive loss (income) related to the noncontrolling interests created in the Match Group IPO	21,589
Balance at end of period	(170,149)	(154,645)
Unrealized Gains (Losses) On Available-For-Sale Securities
Accumulated Other Comprehensive Loss
Balance at beginning of period	2,542	(852)
Other comprehensive income (loss) before reclassifications, net of tax (provision) benefit related to unrealized gains (losses) on available-for-sale securities	4,855	3,537
Amounts reclassified to earnings	(2,913)	(143)
Net current period other comprehensive (loss) income	1,942	3,394
Reallocation of accumulated other comprehensive loss (income) related to the noncontrolling interests created in the Match Group IPO	(458)
Balance at end of period	4,026	2,542
Amounts reclassified to earnings, tax	200	100
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Loss
Balance at beginning of period	(152,103)	(87,700)
Balance at end of period	$ (166,123)	$ (152,103)

(LOSS) EARNINGS PER SHARE - COMPUTATION OF BASIC AND DILUTED EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Numerator: Basic
(Loss) earnings from continuing operations	$ 113,928	$ 52,340	$ (190,542)	$ 7,934	$ (31,417)	$ 65,026	$ 57,885	$ 21,863	$ (16,340)	$ 113,357	$ 234,557
Net (earnings) loss attributable to noncontrolling interests									(25,129)	6,098	5,643
(Loss) earnings from continuing operations attributable to IAC shareholders									(41,469)	119,455	240,200
Earnings from discontinued operations, net of tax									189	17	174,673
Net (loss) earnings attributable to IAC shareholders	102,051	43,162	(194,775)	8,282	(31,849)	65,611	59,305	26,405	(41,280)	119,472	414,873
Numerator: Diluted
(Loss) earnings from continuing operations	$ 113,928	$ 52,340	$ (190,542)	$ 7,934	$ (31,417)	$ 65,026	$ 57,885	$ 21,863	(16,340)	113,357	234,557
Net (earnings) loss attributable to noncontrolling interests									(25,129)	6,098	5,643
Impact from Match Group's dilutive securities (a) (b)									0	(1,799)	0
(Loss) earnings from continuing operations attributable to IAC shareholders									(41,469)	117,656	240,200
Earnings from discontinued operations, net of tax									189	17	174,673
Net (loss) earnings attributable to IAC shareholders									$ (41,280)	$ 117,673	$ 414,873
Denominator: Basic
Weighted average basic shares outstanding (in shares)									80,045	82,944	83,292
Denominator: Diluted
Weighted average basic shares outstanding (in shares)									80,045	82,944	83,292
Dilutive securities including subsidiary denominated equity, stock options and RSUs (in shares)									0	5,323	5,266
Weighted average diluted shares outstanding (in shares)									80,045	88,267	88,558
Earnings (loss) per share attributable to IAC shareholders: Basic
Basic (loss) earnings per share from continuing operations (in usd per share)	$ 1.29	$ 0.54	$ (2.45)	$ 0.10	$ (0.38)	$ 0.79	$ 0.72	$ 0.31	$ (0.52)	$ 1.44	$ 2.88
Discontinued operations, net of tax (in usd per share)									0.00	0.00	2.10
Basic (loss) earnings per share (in usd per share)	1.29	0.54	(2.45)	0.10	(0.38)	0.79	0.72	0.32	(0.52)	1.44	4.98
Earnings (loss) per share attributable to IAC shareholders: Diluted
Diluted (loss) earnings per share from continuing operations (in usd per share)	1.18	0.49	(2.45)	0.09	(0.38)	0.74	0.68	0.30	(0.52)	1.33	2.71
Discontinued operations, net of tax (in dollars per share)									0.00	0.00	1.97
Diluted (loss) earnings per share (in usd per share)	$ 1.18	$ 0.49	$ (2.45)	$ 0.09	$ (0.38)	$ 0.74	$ 0.68	$ 0.30	$ (0.52)	$ 1.33	$ 4.68
Anti-dilutive weighted average common shares
Potentially dilutive securities excluded from calculation of diluted earnings per share (in shares)									11,300	1,200	300
PSUs
Anti-dilutive weighted average common shares
Potentially dilutive securities excluded from calculation of diluted earnings per share (in shares)										600	100

STOCK-BASED COMPENSATION (Details) $ / shares in Units, shares in Thousands, $ in Millions	1 Months Ended	3 Months Ended					12 Months Ended
	Jan. 31, 2014 USD ($)	Sep. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2015 USD ($) $ / shares	Sep. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2016 USD ($) plan $ / shares shares	Dec. 31, 2015 USD ($) installments $ / shares shares	Dec. 31, 2014 USD ($) $ / shares shares	Dec. 31, 2013	Dec. 31, 2008
Share-based Compensation Arrangement by Share-based Payment Award
Number of active stock-based compensation plans \| plan							2
Shares available for grant (in shares) \| shares							5,900
Unrecognized compensation cost, net of estimated forfeitures							$ 177.9
Weighted average period over which cost is expected to be recognized (in years)							2 years 7 months 6 days
Tax benefit recognized related to stock-based compensation							$ 34.8	$ 36.6	$ 22.2
Intrinsic value of stock options exercised							$ 17.1	$ 53.0	$ 63.3
Stock options granted in period \| shares							1,722	2,500	700
Weighted average grant date fair value of stock options granted (in usd per share) \| $ / shares				$ 15.24			$ 12.34	$ 15.24	$ 16.67
Weighted average exercise price (in usd per share) \| $ / shares				84.31				84.31
Weighted average grant date fair value (in usd per share) \| $ / shares				$ 12.00				$ 12.00
Incremental compensation cost			$ 7.3		$ 6.8	$ 5.8
Aggregate number of shares required to settle equity awards at current estimated fair values held by subsidiary management \| shares							2,800	2,300
Estimated number of shares required to settle equity awards at current estimated fair values held by subsidiary management, giving effect to withholding taxes \| shares							1,400	1,100
Estimated amount of payment of withholding taxes related to settlement of equity awards at current estimated fair value held by subsidiary management							$ 90.8	$ 69.1
Assumed withholding rate							50.00%
Incremental aggregate shares required to settle award for each 10% increase in fair value estimate of subsidiary (in shares) \| shares							700
Incremental compensation cost from modification recognized in year of modification							$ 6.3	$ 3.5
Incremental compensation cost from prior period modification							0.6
Incremental compensation cost from modification recognized over remaining life							1.0
Vested equity awards settled in cash		$ 13.4		$ 23.4
Incremental compensation cost from repurchase of fully vested equity awards				$ 7.7
Fair value of equity award to non-employee							$ 14.3
2008 Plan
Share-based Compensation Arrangement by Share-based Payment Award
Stated term (in years)											10 years
2013 Plan
Share-based Compensation Arrangement by Share-based Payment Award
Stated term (in years)										10 years
Match Group
Share-based Compensation Arrangement by Share-based Payment Award
Aggregate number of shares required to settle subsidiary equity awards at current estimated fair values \| shares							5,100	4,100
Aggregate number of shares required to settle subsidiary equity awards at current estimated fair values, giving effect to withholding taxes \| shares							2,500	2,100
Estimated amount of payment of withholding taxes related to settlement of subsidiary equity awards at current estimated fair value							$ 164.6	$ 123.2
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award
Vesting period (in years)							4 years
Expected volatility							29.00%	28.00%	31.00%
Risk-free interest rate							1.20%	1.60%	1.50%
Dividend yield							0.00%	2.00%	1.50%
Expected term (in years)							4 years 9 months 18 days	5 years 3 months 18 days	4 years 9 months 18 days
Cash received from stock option exercises							$ 25.8	$ 27.3	$ 39.1
Tax benefit realized from stock option exercises							$ 6.1	$ 25.8	$ 25.5
Stock Options \| Executive
Share-based Compensation Arrangement by Share-based Payment Award
Incremental compensation cost	$ 7.4
Market-Based Stock Options
Share-based Compensation Arrangement by Share-based Payment Award
Vesting requirement, consecutive days above price threshold (in days)								20 days
Number of annual vesting installments \| installments								4
Expected volatility								27.00%
Risk-free interest rate								2.30%
Dividend yield								1.80%
Expected term (in years)								4 years
RSU's and PSU's
Share-based Compensation Arrangement by Share-based Payment Award
Weighted average grant date fair value of RSU's and PSU's granted (in usd per share) \| $ / shares							$ 46.92	$ 67.71	$ 68.13
Fair value of RSU's and PSU's that vested during the period							$ 13.5	$ 16.8	$ 20.4
RSUs
Share-based Compensation Arrangement by Share-based Payment Award
Vesting period (in years)							3 years
Weighted average grant date fair value of RSU's and PSU's granted (in usd per share) \| $ / shares							$ 46.92
PSUs
Share-based Compensation Arrangement by Share-based Payment Award
Weighted average grant date fair value of RSU's and PSU's granted (in usd per share) \| $ / shares							$ 0.00
Vesting period one \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award
Vesting rights by year (percentage)							25.00%
Vesting period one \| RSUs
Share-based Compensation Arrangement by Share-based Payment Award
Vesting rights by year (percentage)							33.00%
Vesting period two \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award
Vesting rights by year (percentage)							25.00%
Vesting period two \| RSUs
Share-based Compensation Arrangement by Share-based Payment Award
Vesting rights by year (percentage)							33.00%
Vesting period three \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award
Vesting rights by year (percentage)							25.00%
Vesting period three \| RSUs
Share-based Compensation Arrangement by Share-based Payment Award
Vesting rights by year (percentage)							33.00%
Vesting period four \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award
Vesting rights by year (percentage)							25.00%

STOCK-BASED COMPENSATION - SCHEDULE OF CHANGES IN OUTSTANDING STOCK OPTIONS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Number of Shares
Balance at beginning of period (in shares)	7,283
Granted (in shares)	1,722	2,500	700
Exercised (in shares)	(740)
Forfeited (in shares)	(142)
Expired (in shares)	(65)
Balance at end of period (in shares)	8,058	7,283
Options exercisable (in shares)	4,170
Weighted Average Exercise Price
Balance at beginning of period (in usd per share)	$ 52.13
Granted (in usd per share)	46.25
Exercised (in usd per share)	34.90
Forfeited (in usd per share)	53.30
Expired (in usd per share)	55.31
Balance at end of period (in usd per share)	52.41	$ 52.13
Options exercisable (in usd per share)	$ 44.91
Weighted Average Remaining Contractual Term
Balance at end of period (in years)	6 years 8 months 12 days
Options exercisable (in years)	4 years 10 months 24 days
Aggregate Intrinsic Value
Balance at end of period	$ 120,681
Options exercisable	$ 87,865

STOCK-BASED COMPENSATION - SCHEDULE OF INFORMATION FOR STOCK OPTIONS OUTSTANDING AND EXERCISABLE (Details) shares in Thousands	12 Months Ended
	Dec. 31, 2016 $ / shares shares
Options Outstanding
Options outstanding (in shares) \| shares	8,058
Weighted-average remaining contractual life (in years)	6 years 8 months 12 days
Weighted-average exercise price (in usd per share)	$ 52.41
Options Exercisable
Options exercisable (in shares) \| shares	4,170
Weighted-average remaining contractual life (in years)	4 years 10 months 24 days
Weighted-average exercise price (in usd per share)	$ 44.91
$10.01 to $20.00
Options Outstanding
Options outstanding (in shares) \| shares	404
Weighted-average remaining contractual life (in years)	2 years 7 months 6 days
Weighted-average exercise price (in usd per share)	$ 18.02
Options Exercisable
Options exercisable (in shares) \| shares	404
Weighted-average remaining contractual life (in years)	2 years 7 months 6 days
Weighted-average exercise price (in usd per share)	$ 18.02
Exercise price range, lower limit (in usd per share)	10.01
Exercise price range, upper limit (in usd per share)	$ 20
$20.01 to $30.00
Options Outstanding
Options outstanding (in shares) \| shares	238
Weighted-average remaining contractual life (in years)	2 years 3 months 18 days
Weighted-average exercise price (in usd per share)	$ 20.97
Options Exercisable
Options exercisable (in shares) \| shares	238
Weighted-average remaining contractual life (in years)	2 years 3 months 18 days
Weighted-average exercise price (in usd per share)	$ 20.97
Exercise price range, lower limit (in usd per share)	20.01
Exercise price range, upper limit (in usd per share)	$ 30
$30.01 to $40.00
Options Outstanding
Options outstanding (in shares) \| shares	913
Weighted-average remaining contractual life (in years)	4 years 1 month 6 days
Weighted-average exercise price (in usd per share)	$ 31.61
Options Exercisable
Options exercisable (in shares) \| shares	913
Weighted-average remaining contractual life (in years)	4 years 1 month 6 days
Weighted-average exercise price (in usd per share)	$ 31.61
Exercise price range, lower limit (in usd per share)	30.01
Exercise price range, upper limit (in usd per share)	$ 40
$40.01 to $50.00
Options Outstanding
Options outstanding (in shares) \| shares	2,727
Weighted-average remaining contractual life (in years)	7 years 1 month 6 days
Weighted-average exercise price (in usd per share)	$ 44.31
Options Exercisable
Options exercisable (in shares) \| shares	1,389
Weighted-average remaining contractual life (in years)	5 years 1 month 6 days
Weighted-average exercise price (in usd per share)	$ 46.35
Exercise price range, lower limit (in usd per share)	40.01
Exercise price range, upper limit (in usd per share)	$ 50
$50.01 to $60.00
Options Outstanding
Options outstanding (in shares) \| shares	464
Weighted-average remaining contractual life (in years)	5 years 8 months 12 days
Weighted-average exercise price (in usd per share)	$ 58.30
Options Exercisable
Options exercisable (in shares) \| shares	333
Weighted-average remaining contractual life (in years)	4 years 3 months 18 days
Weighted-average exercise price (in usd per share)	$ 58.80
Exercise price range, lower limit (in usd per share)	50.01
Exercise price range, upper limit (in usd per share)	$ 60.00
$60.01 to $70.00
Options Outstanding
Options outstanding (in shares) \| shares	1,850
Weighted-average remaining contractual life (in years)	8 years
Weighted-average exercise price (in usd per share)	$ 64.70
Options Exercisable
Options exercisable (in shares) \| shares	540
Weighted-average remaining contractual life (in years)	7 years 2 months 12 days
Weighted-average exercise price (in usd per share)	$ 64.72
Exercise price range, lower limit (in usd per share)	60.01
Exercise price range, upper limit (in usd per share)	$ 70.00
$70.01 to $80.00
Options Outstanding
Options outstanding (in shares) \| shares	962
Weighted-average remaining contractual life (in years)	8 years 2 months 12 days
Weighted-average exercise price (in usd per share)	$ 74.23
Options Exercisable
Options exercisable (in shares) \| shares	228
Weighted-average remaining contractual life (in years)	7 years 9 months 18 days
Weighted-average exercise price (in usd per share)	$ 73.20
Exercise price range, lower limit (in usd per share)	70.01
Exercise price range, upper limit (in usd per share)	$ 80.00
$80.01 to $90.00
Options Outstanding
Options outstanding (in shares) \| shares	500
Weighted-average remaining contractual life (in years)	8 years 3 months 18 days
Weighted-average exercise price (in usd per share)	$ 84.31
Options Exercisable
Options exercisable (in shares) \| shares	125
Weighted-average remaining contractual life (in years)	8 years 3 months 18 days
Weighted-average exercise price (in usd per share)	$ 84.31
Exercise price range, lower limit (in usd per share)	80.01
Exercise price range, upper limit (in usd per share)	$ 90.00

STOCK-BASED COMPENSATION - SCHEDULE OF WEIGHTED AVERAGE ASSUMPTIONS (Details) - Stock Options	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award
Expected volatility	29.00%	28.00%	31.00%
Risk-free interest rate	1.20%	1.60%	1.50%
Expected term (in years)	4 years 9 months 18 days	5 years 3 months 18 days	4 years 9 months 18 days
Dividend yield	0.00%	2.00%	1.50%

STOCK-BASED COMPENSATION - SCHEDULE OF OUSTANDING UNVESTED RSUs AND PSUs (Details) shares in Thousands	12 Months Ended
	Dec. 31, 2016 $ / shares shares
RSUs
Number of Shares
Balance at beginning of the period (in shares) \| shares	650
Granted (in shares) \| shares	148
Vested (in shares) \| shares	(268)
Forfeited (in shares) \| shares	(4)
Balance at end of the period (in shares) \| shares	526
Weighted Average Grant Date Fair Value
Balance at beginning of the period (in usd per share) \| $ / shares	$ 57.76
Granted (in usd per share) \| $ / shares	46.92
Vested (in usd per share) \| $ / shares	52.41
Forfeited (in usd per share) \| $ / shares	61.68
Balance at end of the period (in usd per share) \| $ / shares	$ 57.41
Vesting period (in years)	3 years
PSUs
Number of Shares
Balance at beginning of the period (in shares) \| shares	2
Granted (in shares) \| shares	0
Vested (in shares) \| shares	(2)
Forfeited (in shares) \| shares	0
Balance at end of the period (in shares) \| shares	0
Weighted Average Grant Date Fair Value
Balance at beginning of the period (in usd per share) \| $ / shares	$ 71.39
Granted (in usd per share) \| $ / shares	0.00
Vested (in usd per share) \| $ / shares	71.39
Forfeited (in usd per share) \| $ / shares	0.00
Balance at end of the period (in usd per share) \| $ / shares	$ 0.00

SEGMENT INFORMATION - SCHEDULE OF SEGMENT REPORTING INFORMATION (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information
Revenue	$ 811,162	$ 764,102	$ 745,439	$ 819,179	$ 848,728	$ 838,561	$ 771,132	$ 772,512	$ 3,139,882	$ 3,230,933	$ 3,109,547
Operating income (loss)	112,820	$ 85,584	$ (252,446)	$ 21,417	(5,430)	$ 87,130	$ 62,769	$ 35,119	(32,625)	179,588	378,727
Adjusted EBITDA									501,219	485,790	544,076
Segment Assets	2,366,370				2,502,499				2,366,370	2,502,499
Capital expenditures									78,039	62,049	57,233
Operating Segments \| Match Group
Segment Reporting Information
Revenue									1,222,526	1,020,431	888,268
Operating income (loss)									305,908	193,556	228,567
Adjusted EBITDA									403,955	278,667	273,448
Segment Assets	509,936				330,736				509,936	330,736
Capital expenditures									48,903	29,156	21,793
Operating Segments \| HomeAdvisor
Segment Reporting Information
Revenue									498,890	361,201	283,541
Operating income (loss)									35,343	6,452	1,061
Adjusted EBITDA									48,546	18,529	17,701
Segment Assets	97,751				32,116				97,751	32,116
Capital expenditures									16,660	10,170	6,775
Operating Segments \| Video
Segment Reporting Information
Revenue									228,649	213,317	182,454
Operating income (loss)									(27,656)	(38,756)	(43,346)
Adjusted EBITDA									(21,247)	(38,384)	(39,916)
Segment Assets	230,269				90,671				230,269	90,671
Capital expenditures									2,508	2,466	1,878
Operating Segments \| Applications
Segment Reporting Information
Revenue									604,140	760,748	776,707
Operating income (loss)									109,663	175,145	178,960
Adjusted EBITDA									132,276	184,258	186,192
Segment Assets	109,019				108,997				109,019	108,997
Capital expenditures									1,196	4,681	4,220
Operating Segments \| Publishing
Segment Reporting Information
Revenue									407,313	691,686	791,549
Operating income (loss)									(334,417)	(26,692)	110,523
Adjusted EBITDA									(7,571)	87,788	150,960
Segment Assets	409,838				391,450				409,838	391,450
Capital expenditures									2,093	6,283	13,481
Operating Segments \| Other
Segment Reporting Information
Revenue									178,949	184,095	187,834
Operating income (loss)									(2,037)	(9,186)	8,108
Adjusted EBITDA									1,227	10,621	13,134
Segment Assets	0				64,550				0	64,550
Capital expenditures									2,907	3,175	2,845
Corporate
Segment Reporting Information
Operating income (loss)									(119,429)	(120,931)	(105,146)
Adjusted EBITDA									(55,967)	(55,689)	(57,443)
Segment Assets	$ 1,009,557				$ 1,483,979				1,009,557	1,483,979
Capital expenditures									3,772	6,118	6,241
Inter-segment Elimination
Segment Reporting Information
Revenue									$ (585)	$ (545)	$ (806)

SEGMENT INFORMATION - SCHEDULE OF REVENUE AND LONG-LIVED ASSETS (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenue and Long-lived Assets by Geography
Revenue	$ 811,162	$ 764,102	$ 745,439	$ 819,179	$ 848,728	$ 838,561	$ 771,132	$ 772,512	$ 3,139,882	$ 3,230,933	$ 3,109,547
Long-lived assets (excluding goodwill and intangible assets)	306,248				302,817				306,248	302,817
United States
Revenue and Long-lived Assets by Geography
Revenue									2,318,976	2,376,035	2,146,189
Long-lived assets (excluding goodwill and intangible assets)	281,725				279,913				281,725	279,913
All Other Countries
Revenue and Long-lived Assets by Geography
Revenue									820,906	854,898	$ 963,358
Long-lived assets (excluding goodwill and intangible assets)	$ 24,523				$ 22,904				$ 24,523	$ 22,904

SEGMENT INFORMATION - SCHEDULE OF RECONCILIATION OF ADJUSTED EBITDA TO OPERATING INCOME (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting, Other Significant Reconciling Item
Operating income (loss)	$ 112,820	$ 85,584	$ (252,446)	$ 21,417	$ (5,430)	$ 87,130	$ 62,769	$ 35,119	$ (32,625)	$ 179,588	$ 378,727
Stock-based compensation expense									104,820	105,450	59,634
Depreciation									71,676	62,205	61,156
Amortization of intangibles									79,426	139,952	57,926
Acquisition-related contingent consideration fair value adjustments									2,555	(15,461)	(13,367)
Goodwill impairment									275,367	14,056	0
Adjusted EBITDA									501,219	485,790	544,076
Interest expense									(109,110)	(73,636)	(56,314)
Other income (expense), net									60,461	36,921	(52,484)
(Loss) earnings from continuing operations before income taxes									(81,274)	142,873	269,929
Income tax benefit									64,934	(29,516)	(35,372)
(Loss) earnings from continuing operations	113,928	52,340	(190,542)	7,934	(31,417)	65,026	57,885	21,863	(16,340)	113,357	234,557
Earnings from discontinued operations, net of tax									189	17	174,673
Net (loss) earnings	114,117	52,340	(190,542)	7,934	(31,389)	65,043	57,732	21,988	(16,151)	113,374	409,230
Net (earnings) loss attributable to noncontrolling interests									(25,129)	6,098	5,643
Net (loss) earnings attributable to IAC shareholders	$ 102,051	$ 43,162	(194,775)	$ 8,282	$ (31,849)	$ 65,611	$ 59,305	$ 26,405	(41,280)	119,472	414,873
Match Group
Segment Reporting, Other Significant Reconciling Item
Goodwill impairment									0	0
HomeAdvisor
Segment Reporting, Other Significant Reconciling Item
Goodwill impairment									0	0
Video
Segment Reporting, Other Significant Reconciling Item
Goodwill impairment									0	0
Applications
Segment Reporting, Other Significant Reconciling Item
Goodwill impairment									0	0
Publishing
Segment Reporting, Other Significant Reconciling Item
Goodwill impairment									275,367	0
Other
Segment Reporting, Other Significant Reconciling Item
Goodwill impairment									0	14,056
Operating Segments \| Match Group
Segment Reporting, Other Significant Reconciling Item
Operating income (loss)									305,908	193,556	228,567
Stock-based compensation expense									52,988	50,083	20,851
Depreciation									31,227	25,983	25,547
Amortization of intangibles									23,029	20,101	11,395
Acquisition-related contingent consideration fair value adjustments									(9,197)	(11,056)	(12,912)
Goodwill impairment									0	0
Adjusted EBITDA									403,955	278,667	273,448
Operating Segments \| HomeAdvisor
Segment Reporting, Other Significant Reconciling Item
Operating income (loss)									35,343	6,452	1,061
Stock-based compensation expense									1,631	1,649	558
Depreciation									8,419	6,593	6,520
Amortization of intangibles									3,153	3,835	9,562
Acquisition-related contingent consideration fair value adjustments									0	0	0
Goodwill impairment									0	0
Adjusted EBITDA									48,546	18,529	17,701
Operating Segments \| Video
Segment Reporting, Other Significant Reconciling Item
Operating income (loss)									(27,656)	(38,756)	(43,346)
Stock-based compensation expense									640	360	647
Depreciation									1,785	1,091	899
Amortization of intangibles									4,176	1,558	2,099
Acquisition-related contingent consideration fair value adjustments									(192)	(2,637)	(215)
Goodwill impairment									0	0
Adjusted EBITDA									(21,247)	(38,384)	(39,916)
Operating Segments \| Applications
Segment Reporting, Other Significant Reconciling Item
Operating income (loss)									109,663	175,145	178,960
Stock-based compensation expense									0	0	0
Depreciation									5,095	4,617	4,385
Amortization of intangibles									5,483	6,264	2,521
Acquisition-related contingent consideration fair value adjustments									12,035	(1,768)	326
Goodwill impairment									0	0
Adjusted EBITDA									132,276	184,258	186,192
Operating Segments \| Publishing
Segment Reporting, Other Significant Reconciling Item
Operating income (loss)									(334,417)	(26,692)	110,523
Stock-based compensation expense									0	0	0
Depreciation									8,531	9,577	11,856
Amortization of intangibles									42,948	104,903	28,581
Acquisition-related contingent consideration fair value adjustments									0	0	0
Goodwill impairment			$ 275,400						275,367	0
Adjusted EBITDA									(7,571)	87,788	150,960
Operating Segments \| Other
Segment Reporting, Other Significant Reconciling Item
Operating income (loss)									(2,037)	(9,186)	8,108
Stock-based compensation expense									0	0	0
Depreciation									2,718	2,460	1,824
Amortization of intangibles									637	3,291	3,768
Acquisition-related contingent consideration fair value adjustments									(91)	0	(566)
Goodwill impairment									0	14,056
Adjusted EBITDA									1,227	10,621	13,134
Corporate
Segment Reporting, Other Significant Reconciling Item
Operating income (loss)									(119,429)	(120,931)	(105,146)
Stock-based compensation expense									49,561	53,358	37,578
Depreciation									13,901	11,884	10,125
Amortization of intangibles									0	0	0
Acquisition-related contingent consideration fair value adjustments									0	0	0
Goodwill impairment									0	0
Adjusted EBITDA									$ (55,967)	$ (55,689)	$ (57,443)

SEGMENT INFORMATION - SCHEDULE OF RECONCILIATION OF SEGMENT ASSETS TO TOTAL ASSETS (Details) - USD ($)	Dec. 31, 2016	Oct. 01, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting, Asset Reconciling Item
Segment Assets	$ 2,366,370,000		$ 2,502,499,000
Goodwill	1,924,052,000		2,245,364,000	$ 1,754,926,000
Indefinite-Lived Intangible Assets	320,645,000		380,137,000
Definite-Lived Intangible Assets	34,806,000		60,691,000
TOTAL ASSETS	4,645,873,000		5,188,691,000
Match Group
Segment Reporting, Asset Reconciling Item
Goodwill	1,280,960,000		1,293,109,000	791,474,000
HomeAdvisor
Segment Reporting, Asset Reconciling Item
Goodwill	170,611,000		150,251,000	151,321,000
Video
Segment Reporting, Asset Reconciling Item
Goodwill	25,239,000		15,590,000	15,590,000
Applications
Segment Reporting, Asset Reconciling Item
Goodwill	447,242,000		447,242,000	0
Publishing
Segment Reporting, Asset Reconciling Item
Goodwill	0		277,192,000	0
Other
Segment Reporting, Asset Reconciling Item
Goodwill	0		61,980,000	$ 21,719,000
Operating Segments \| Match Group
Segment Reporting, Asset Reconciling Item
Segment Assets	509,936,000		330,736,000
Goodwill	1,280,960,000		1,293,109,000
Indefinite-Lived Intangible Assets	238,361,000		243,697,000
Definite-Lived Intangible Assets	10,809,000		32,711,000
TOTAL ASSETS	2,040,066,000		1,900,253,000
Operating Segments \| HomeAdvisor
Segment Reporting, Asset Reconciling Item
Segment Assets	97,751,000		32,116,000
Goodwill	170,611,000		150,251,000
Indefinite-Lived Intangible Assets	4,884,000		600,000
Definite-Lived Intangible Assets	5,908,000		5,727,000
TOTAL ASSETS	279,154,000		188,694,000
Operating Segments \| Video
Segment Reporting, Asset Reconciling Item
Segment Assets	230,269,000		90,671,000
Goodwill	25,239,000		15,590,000
Indefinite-Lived Intangible Assets	1,800,000		1,800,000
Definite-Lived Intangible Assets	4,167,000		3,343,000
TOTAL ASSETS	261,475,000		111,404,000
Operating Segments \| Applications
Segment Reporting, Asset Reconciling Item
Segment Assets	109,019,000		108,997,000
Goodwill	447,242,000		447,242,000
Indefinite-Lived Intangible Assets	60,600,000		60,600,000
Definite-Lived Intangible Assets	2,481,000		7,964,000
TOTAL ASSETS	619,342,000		624,803,000
Operating Segments \| Publishing
Segment Reporting, Asset Reconciling Item
Segment Assets	409,838,000		391,450,000
Goodwill	0	$ 0	277,192,000
Indefinite-Lived Intangible Assets	15,000,000		59,805,000
Definite-Lived Intangible Assets	11,441,000		7,849,000
TOTAL ASSETS	436,279,000		736,296,000
Operating Segments \| Other
Segment Reporting, Asset Reconciling Item
Segment Assets	0		64,550,000
Goodwill	0		61,980,000
Indefinite-Lived Intangible Assets	0		13,635,000
Definite-Lived Intangible Assets	0		3,097,000
TOTAL ASSETS	0		143,262,000
Corporate
Segment Reporting, Asset Reconciling Item
Segment Assets	1,009,557,000		1,483,979,000
Goodwill	0		0
Indefinite-Lived Intangible Assets	0		0
Definite-Lived Intangible Assets	0		0
TOTAL ASSETS	$ 1,009,557,000		$ 1,483,979,000

COMMITMENTS - SCHEDULE OF FUTURE MINIMUM PAYMENTS UNDER OPERATING LEASE AGREEMENTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Future Minimum Payments Under Operating Lease Agreements
2017	$ 31,834
2018	31,661
2019	24,316
2020	18,523
2021	13,239
Thereafter	189,070
Total	308,643
Expenses charged to operations under operating lease agreements	$ 49,300	$ 39,400	$ 41,200
Period of most significant operating leases (in years)	77 years
Percentage of most significant operating leases	57.00%

COMMITMENTS - SCHEDULE OF COMMERCIAL COMMITMENTS OUTSTANDING (Details) $ in Thousands	Dec. 31, 2016 USD ($)
Other Commitments
Less Than 1 Year	$ 11,349
1-3 Years	10,063
3-5 Years	0
More Than 5 Years	1,437
Total Amounts Committed	22,849
Purchase obligations
Other Commitments
Less Than 1 Year	10,581
1-3 Years	10,000
3-5 Years	0
More Than 5 Years	0
Total Amounts Committed	20,581
Letters of credit and surety bonds
Other Commitments
Less Than 1 Year	768
1-3 Years	63
3-5 Years	0
More Than 5 Years	1,437
Total Amounts Committed	$ 2,268

SUPPLEMENTAL CASH FLOW INFORMATION - SCHEDULE OF SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION (Details) - USD ($) $ in Thousands		12 Months Ended
	Nov. 16, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Supplemental Cash Flow Information [Abstract]
Fair value of contingent consideration liabilities		$ 200	$ 27,400	$ 8,800
Cash paid (received) during the year for:
Interest		107,360	51,666	54,027
Income tax payments		69,103	70,762	63,521
Income tax refunds		$ (23,877)	$ (5,619)	$ (10,477)
Senior Notes \| Debt Conversion, Private Exchange Offer upon IPO \| 2012 Senior Notes
Debt Instrument
Debt instrument exchanged amount, original debt	$ 445,300
Senior Notes \| Debt Conversion, Private Exchange Offer upon IPO \| Match Group Senior Notes \| Match Group
Debt Instrument
Debt instrument exchanged amount, new debt	$ 445,200

RELATED PARTY TRANSACTIONS (Details) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2016 USD ($) aircraft shares	Dec. 31, 2015 USD ($)	Dec. 31, 2013 USD ($)
Match Group \| Employee Matters Agreement
Related Party Transaction [Line Items]
Shares received from related party pursuant to employee matters agreement (in shares) \| shares	1.0
Shares received from related party as reimbursement for exercise and settlement of equity awards denominated in shares of subsidiary (in shares) \| shares	0.5
Shares received from related party as reimbursement for exercise and vesting of equity awards denominated in shares of parent (in shares) \| shares	0.4
Match Group \| Services Agreement
Related Party Transaction [Line Items]
Payments received from related parties	$ 11.8	$ 0.7
Match Group \| Tax Sharing Agreement
Related Party Transaction [Line Items]
Amounts due to related party	9.0
Payments received from related parties	$ 19.9
Other Affiliates
Related Party Transaction [Line Items]
Ownership interest held by each of the Company and Expedia in aircraft (as a percent)	50.00%
Number of aircraft operated \| aircraft	2
IAC's total purchase price and refurbish costs in aircraft			$ 25.0
Percentage of total purchase price and refurbish costs paid in related party transaction			50.00%
Ownership interest held by each of the Company and Expedia in an entity employing aircraft flight crew (as a percent)	50.00%

BENEFIT PLANS (Details) - USD ($) $ in Millions	12 Months Ended
BENEFIT PLANS (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract]
Employee contribution limit per calendar year (as a percent of pre-tax earnings)	50.00%
Employer contribution limit per calendar year (as a percent of compensation)	3.00%
Employer contribution per dollar employee contributes up to contribution limit	50.00%
United States
Defined Contribution Plan Disclosure
Defined contribution plan contributions	$ 10.0	$ 9.1	$ 7.5
All Other Countries
Defined Contribution Plan Disclosure
Defined contribution plan contributions	$ 2.1	$ 2.5	$ 2.5

CONSOLIDATED FINANCIAL STATEMENT DETAILS - SCHEDULE OF OTHER CURRENT ASSETS (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Other current assets:
Income taxes receivable	$ 41,352	$ 26,793
Production costs	39,763	24,804
Prepaid expenses	37,665	40,091
Capitalized downloadable search toolbar costs, net	28,737	27,929
Other	56,551	54,669
Other current assets	$ 204,068	$ 174,286

CONSOLIDATED FINANCIAL STATEMENT DETAILS - SCHEDULE OF PROPERTY AND EQUIPMENT, NET (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Property and equipment, net:
Property and equipment, gross	$ 618,082	$ 587,311
Accumulated depreciation and amortization	(311,834)	(284,494)
Property and equipment, net	306,248	302,817
Buildings and leasehold improvements
Property and equipment, net:
Property and equipment, gross	247,451	235,545
Computer equipment and capitalized software
Property and equipment, net:
Property and equipment, gross	259,464	239,309
Furniture and other equipment
Property and equipment, net:
Property and equipment, gross	93,002	88,664
Projects in progress
Property and equipment, net:
Property and equipment, gross	13,048	18,676
Land
Property and equipment, net:
Property and equipment, gross	$ 5,117	$ 5,117

CONSOLIDATED FINANCIAL STATEMENT DETAILS - SCHEDULE OF ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Accrued expenses and other current liabilities:
Accrued employee compensation and benefits	$ 106,301	$ 104,481
Accrued advertising expense	68,916	87,064
Other	169,693	191,706
Accrued expenses and other current liabilities	$ 344,910	$ 383,251

CONSOLIDATED FINANCIAL STATEMENT DETAILS - SCHEDULE OF REVENUE (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenue:
Service revenue									$ 2,967,474	$ 3,077,080	$ 2,957,735
Product revenue									172,408	153,853	151,812
Revenue	$ 811,162	$ 764,102	$ 745,439	$ 819,179	$ 848,728	$ 838,561	$ 771,132	$ 772,512	$ 3,139,882	$ 3,230,933	$ 3,109,547

CONSOLIDATED FINANCIAL STATEMENT DETAILS - SCHEDULE OF COST OF REVENUE (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cost of revenue:
Cost of service revenue									$ 617,058	$ 652,137	$ 734,222
Cost of product revenue									138,672	126,024	125,982
Cost of revenue	$ 212,468	$ 179,131	$ 170,397	$ 193,734	$ 214,084	$ 199,377	$ 177,963	$ 186,737	$ 755,730	$ 778,161	$ 860,204

CONSOLIDATED FINANCIAL STATEMENT DETAILS - SCHEDULE OF OTHER (EXPENSE) INCOME, NET (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Other income (expense), net:
Other income (expense), net	$ 60,461	$ 36,921	$ (52,484)

CONSOLIDATED FINANCIAL STATEMENT DETAILS (Details) - USD ($)					3 Months Ended		12 Months Ended
	Dec. 30, 2016	Dec. 08, 2016	Jun. 01, 2016	Mar. 31, 2016	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Additional consolidated financial statement details
Goodwill impairment							$ 275,367,000	$ 14,056,000	$ 0
IAC
Additional consolidated financial statement details
Goodwill impairment							0	0
Term Loan \| Match Group, Inc. \| Match Group Term Loan due November 16, 2022
Additional consolidated financial statement details
Repayment of debt		$ 40,000,000	$ 400,000,000	$ 10,000,000			440,000,000
Other Income (Expense)
Additional consolidated financial statement details
Foreign currency exchange gains							34,300,000	5,400,000
Interest income							5,100,000	4,300,000	4,400,000
Gain on sale of marketable securities							3,600,000
Write-off of proportionate share of original issue discount and deferred financing costs							12,100,000
Other-than-temporary impairment on cost method investments							10,000,000	6,700,000	66,600,000
Gain on real estate transaction								34,300,000
Other-than-temporary impairment on equity method investments									4,200,000
Gain on sale of long-term investments									3,600,000
Other Income (Expense) \| Senior Notes \| IAC
Additional consolidated financial statement details
Loss on redemption and repurchase of 2012 and 2013 Senior Notes							3,600,000
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| PriceRunner
Additional consolidated financial statement details
Gain (loss) on sale of business						$ 11,900,000
Disposal group, revenue							7,100,000	32,300,000
Disposal group, operating income (loss)							2,200,000	9,700,000
Disposal group, adjusted EBITDA (loss)							2,600,000	13,000,000
Amortization of intangible assets							300,000	2,900,000
Depreciation							100,000	400,000
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| PriceRunner \| Other Income (Expense)
Additional consolidated financial statement details
Gain (loss) on sale of business							12,000,000
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| ASKfm
Additional consolidated financial statement details
Disposal group, revenue							3,000,000	10,900,000
Disposal group, operating income (loss)							(4,900,000)	(9,100,000)
Disposal group, adjusted EBITDA (loss)							3,900,000	(6,100,000)
Amortization of intangible assets							500,000	2,000,000
Depreciation							500,000	1,100,000
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| ASKfm \| Other Income (Expense)
Additional consolidated financial statement details
Gain (loss) on sale of business							(3,800,000)
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| ShoeBuy
Additional consolidated financial statement details
Gain (loss) on sale of business	$ 37,500,000				$ 37,500,000
Disposal group, revenue							171,800,000	151,800,000
Disposal group, operating income (loss)							(4,200,000)	(18,900,000)
Disposal group, adjusted EBITDA (loss)							(1,300,000)	(2,400,000)
Amortization of intangible assets							300,000	400,000
Depreciation							2,700,000	2,000,000
Goodwill impairment								$ 14,100,000
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| ShoeBuy \| Other Income (Expense)
Additional consolidated financial statement details
Gain (loss) on sale of business							$ 37,500,000
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Urbanspoon \| Other Income (Expense)
Additional consolidated financial statement details
Gain (loss) on sale of business									$ 19,400,000

RESTRUCTURING CHARGES - SCHEDULE OF RESTRUCTURING CHARGES (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($)
Publishing and Applications Segments
Lease termination costs	$ 8,272
Severance	9,993
Charges incurred	18,265
Cost of revenue
Publishing and Applications Segments
Charges incurred	10,117
Selling and marketing expense
Publishing and Applications Segments
Charges incurred	3,673
General and administrative expense
Publishing and Applications Segments
Charges incurred	2,526
Product development expense
Publishing and Applications Segments
Charges incurred	1,949
Publishing
Publishing and Applications Segments
Lease termination costs	8,172
Severance	7,461
Charges incurred	15,633
Payments made	(5,388)
Restructuring reserve accrual	10,245
Publishing \| Cost of revenue
Publishing and Applications Segments
Charges incurred	9,186
Publishing \| Selling and marketing expense
Publishing and Applications Segments
Charges incurred	3,080
Publishing \| General and administrative expense
Publishing and Applications Segments
Charges incurred	2,175
Publishing \| Product development expense
Publishing and Applications Segments
Charges incurred	1,192
Applications
Publishing and Applications Segments
Lease termination costs	100
Severance	2,532
Charges incurred	2,632
Payments made	(1,933)
Restructuring reserve accrual	699
Applications \| Cost of revenue
Publishing and Applications Segments
Charges incurred	931
Applications \| Selling and marketing expense
Publishing and Applications Segments
Charges incurred	593
Applications \| General and administrative expense
Publishing and Applications Segments
Charges incurred	351
Applications \| Product development expense
Publishing and Applications Segments
Charges incurred	757
Lease Termination Costs \| Publishing
Publishing and Applications Segments
Charges incurred	8,172
Payments made	(314)
Restructuring reserve accrual	7,858
Lease Termination Costs \| Applications
Publishing and Applications Segments
Charges incurred	100
Payments made	0
Restructuring reserve accrual	100
Severance \| Publishing
Publishing and Applications Segments
Charges incurred	7,461
Payments made	(5,074)
Restructuring reserve accrual	2,387
Severance \| Applications
Publishing and Applications Segments
Charges incurred	2,532
Payments made	(1,933)
Restructuring reserve accrual	$ 599

RESTRUCTURING CHARGES - SCHEDULE OF MATCH GROUP RESTRUCTURING CHARGES (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) location	Dec. 31, 2015 USD ($)
Restructuring Reserve
Charges incurred	$ 18,265
Cost of revenue
Restructuring Reserve
Charges incurred	10,117
Selling and marketing expense
Restructuring Reserve
Charges incurred	3,673
General and administrative expense
Restructuring Reserve
Charges incurred	2,526
Product development expense
Restructuring Reserve
Charges incurred	$ 1,949
Match Group
Restructuring Cost and Reserve
Number of locations prior to European consolidation \| location	7
Number of locations after European consolidation \| location	3
Restructuring Reserve
Restructuring reserve accrual, beginning of period	$ 3,577	$ 1,728
Charges incurred	4,921	16,767
Payments made	(7,248)	(14,918)
Restructuring reserve accrual, end of period	1,250	3,577
Match Group \| Cost of revenue
Restructuring Reserve
Charges incurred	566	2,947
Match Group \| Selling and marketing expense
Restructuring Reserve
Charges incurred	560	1,678
Match Group \| General and administrative expense
Restructuring Reserve
Charges incurred	1,647	8,160
Match Group \| Product development expense
Restructuring Reserve
Charges incurred	2,148	3,982
Severance \| Match Group
Restructuring Reserve
Restructuring reserve accrual, beginning of period	3,013	795
Charges incurred	345	8,350
Payments made	(2,404)	(6,132)
Restructuring reserve accrual, end of period	954	3,013
Professional Fees & Other \| Match Group
Restructuring Reserve
Restructuring reserve accrual, beginning of period	564	933
Charges incurred	4,576	8,417
Payments made	(4,844)	(8,786)
Restructuring reserve accrual, end of period	$ 296	$ 564

GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION - CONDENSED BALANCE SHEET (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Condensed Balance Sheet
Cash and cash equivalents	$ 1,329,187	$ 1,481,447	$ 990,405	$ 1,100,444
Marketable securities	89,342	39,200
Accounts receivable, net	220,138	250,077
Other current assets	204,068	174,286
Intercompany receivables	0	0
Property and equipment, net	306,248	302,817
Goodwill	1,924,052	2,245,364	1,754,926
Intangible assets, net	355,451	440,828
Investment in subsidiaries	0	0
Other non-current assets	217,387	254,672
TOTAL ASSETS	4,645,873	5,188,691
Current portion of long-term debt	20,000	40,000
Accounts payable, trade	62,863	86,883
Other current liabilities	630,525	641,663
Long-term debt, net of current portion	1,582,484	1,726,954
Income taxes payable	33,528	33,692
Intercompany liabilities	0	0
Other long-term liabilities	272,976	413,283
Redeemable noncontrolling interests	32,827	30,391
Total IAC shareholders' equity	1,869,222	1,804,526
Noncontrolling interests	141,448	411,299
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	4,645,873	5,188,691
Eliminations
Condensed Balance Sheet
Cash and cash equivalents	0	0
Marketable securities	0	0
Accounts receivable, net	0	0
Other current assets	0	0
Intercompany receivables	(1,782,865)	(1,600,470)
Property and equipment, net	0	0
Goodwill	0	0
Intangible assets, net	0	0
Investment in subsidiaries	(4,217,372)	(3,595,366)
Other non-current assets	(115,473)	(14,992)
TOTAL ASSETS	(6,115,710)	(5,210,828)
Current portion of long-term debt	0	0
Accounts payable, trade	0	0
Other current liabilities	0	0
Long-term debt, net of current portion	0	0
Income taxes payable	(216)	0
Intercompany liabilities	(1,782,865)	(1,600,470)
Other long-term liabilities	(115,257)	(14,992)
Redeemable noncontrolling interests	0	0
Total IAC shareholders' equity	(4,217,372)	(3,595,366)
Noncontrolling interests	0	0
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	(6,115,710)	(5,210,828)
IAC
Condensed Balance Sheet
Cash and cash equivalents	552,699	1,073,053	762,231	780,651
Marketable securities	89,342	27,578
Accounts receivable, net	0	33
Other current assets	71,152	30,813
Intercompany receivables	0	0
Property and equipment, net	4,350	4,432
Goodwill	0	0
Intangible assets, net	0	0
Investment in subsidiaries	3,659,570	3,128,765
Other non-current assets	52,228	84,368
TOTAL ASSETS	4,429,341	4,349,042
Current portion of long-term debt	20,000	0
Accounts payable, trade	2,697	4,711
Other current liabilities	42,159	62,833
Long-term debt, net of current portion	405,991	550,083
Income taxes payable	0	152
Intercompany liabilities	1,782,865	1,600,470
Other long-term liabilities	306,407	326,267
Redeemable noncontrolling interests	0	0
Total IAC shareholders' equity	1,869,222	1,804,526
Noncontrolling interests	0	0
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	4,429,341	4,349,042
Guarantor Subsidiaries
Condensed Balance Sheet
Cash and cash equivalents	0	0	0	0
Marketable securities	0	0
Accounts receivable, net	90,807	115,280
Other current assets	30,515	46,128
Intercompany receivables	735,108	637,324
Property and equipment, net	178,806	198,890
Goodwill	521,740	776,569
Intangible assets, net	83,179	135,817
Investment in subsidiaries	557,802	466,601
Other non-current assets	111,037	11,258
TOTAL ASSETS	2,308,994	2,387,867
Current portion of long-term debt	0	0
Accounts payable, trade	38,283	42,104
Other current liabilities	120,279	140,077
Long-term debt, net of current portion	0	0
Income taxes payable	3,470	3,435
Intercompany liabilities	0	0
Other long-term liabilities	22,714	18,160
Redeemable noncontrolling interests	0	0
Total IAC shareholders' equity	2,124,248	2,184,091
Noncontrolling interests	0	0
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	2,308,994	2,387,867
Non-Guarantor Subsidiaries
Condensed Balance Sheet
Cash and cash equivalents	776,488	408,394	$ 228,174	$ 319,793
Marketable securities	0	11,622
Accounts receivable, net	129,331	134,764
Other current assets	102,401	97,345
Intercompany receivables	1,047,757	963,146
Property and equipment, net	123,092	99,495
Goodwill	1,402,312	1,468,795
Intangible assets, net	272,272	305,011
Investment in subsidiaries	0	0
Other non-current assets	169,595	174,038
TOTAL ASSETS	4,023,248	3,662,610
Current portion of long-term debt	0	40,000
Accounts payable, trade	21,883	40,068
Other current liabilities	468,087	438,753
Long-term debt, net of current portion	1,176,493	1,176,871
Income taxes payable	30,274	30,105
Intercompany liabilities	0	0
Other long-term liabilities	59,112	83,848
Redeemable noncontrolling interests	32,827	30,391
Total IAC shareholders' equity	2,093,124	1,411,275
Noncontrolling interests	141,448	411,299
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 4,023,248	$ 3,662,610

GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION - CONDENSED STATEMENT OF OPERATIONS (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Condensed Statements of Operations
Revenue	$ 811,162	$ 764,102	$ 745,439	$ 819,179	$ 848,728	$ 838,561	$ 771,132	$ 772,512	$ 3,139,882	$ 3,230,933	$ 3,109,547
Operating Costs and Expenses [Abstract]
Cost of revenue (exclusive of depreciation shown separately below)	212,468	179,131	170,397	193,734	214,084	199,377	177,963	186,737	755,730	778,161	860,204
Selling and marketing expense									1,245,263	1,345,576	1,147,409
General and administrative expense									547,160	525,629	443,610
Product development expense									197,885	185,766	160,515
Depreciation									71,676	62,205	61,156
Amortization of intangibles									79,426	139,952	57,926
Goodwill impairment									275,367	14,056	0
Total operating costs and expenses									3,172,507	3,051,345	2,730,820
Operating (loss) income	112,820	85,584	(252,446)	21,417	(5,430)	87,130	62,769	35,119	(32,625)	179,588	378,727
Equity in earnings (losses) of unconsolidated affiliates									0	0	0
Interest expense									(109,110)	(73,636)	(56,314)
Other income (expense), net									60,461	36,921	(52,484)
(Loss) earnings from continuing operations before income taxes									(81,274)	142,873	269,929
Income tax benefit (provision)									64,934	(29,516)	(35,372)
(Loss) earnings from continuing operations	113,928	52,340	(190,542)	7,934	(31,417)	65,026	57,885	21,863	(16,340)	113,357	234,557
Less: earnings from discontinued operations, net of tax									189	17	174,673
Net (loss) earnings	114,117	52,340	(190,542)	7,934	(31,389)	65,043	57,732	21,988	(16,151)	113,374	409,230
Net (earnings) loss attributable to noncontrolling interests									(25,129)	6,098	5,643
Net (loss) earnings attributable to IAC shareholders	$ 102,051	$ 43,162	$ (194,775)	$ 8,282	$ (31,849)	$ 65,611	$ 59,305	$ 26,405	(41,280)	119,472	414,873
Comprehensive income attributable to IAC shareholders									(76,431)	55,069	340,219
Eliminations
Condensed Statements of Operations
Revenue									(13,211)	(10,009)	(11,839)
Operating Costs and Expenses [Abstract]
Cost of revenue (exclusive of depreciation shown separately below)									(412)	(1,190)	(2,753)
Selling and marketing expense									(12,929)	(8,860)	(8,303)
General and administrative expense									130	41	45
Product development expense									0	0	(828)
Depreciation									0	0	0
Amortization of intangibles									0	0	0
Goodwill impairment									0	0
Total operating costs and expenses									(13,211)	(10,009)	(11,839)
Operating (loss) income									0	0	0
Equity in earnings (losses) of unconsolidated affiliates									(25,963)	(233,229)	(261,083)
Interest expense									0	0	0
Other income (expense), net									0	0	0
(Loss) earnings from continuing operations before income taxes									(25,963)	(233,229)	(261,083)
Income tax benefit (provision)									0	0	0
(Loss) earnings from continuing operations									(25,963)	(233,229)	(261,083)
Less: earnings from discontinued operations, net of tax									(9)	12	(570)
Net (loss) earnings									(25,972)	(233,217)	(261,653)
Net (earnings) loss attributable to noncontrolling interests									0	0	0
Net (loss) earnings attributable to IAC shareholders									(25,972)	(233,217)	(261,653)
Comprehensive income attributable to IAC shareholders									1,523	(163,912)	(181,947)
IAC
Condensed Statements of Operations
Revenue									0	0	0
Operating Costs and Expenses [Abstract]
Cost of revenue (exclusive of depreciation shown separately below)									859	720	998
Selling and marketing expense									2,353	3,210	2,138
General and administrative expense									89,583	93,090	105,221
Product development expense									4,807	4,311	6,496
Depreciation									1,610	1,918	1,426
Amortization of intangibles									0	0	0
Goodwill impairment									0	0
Total operating costs and expenses									99,212	103,249	116,279
Operating (loss) income									(99,212)	(103,249)	(116,279)
Equity in earnings (losses) of unconsolidated affiliates									49,536	215,092	257,714
Interest expense									(26,876)	(49,405)	(51,988)
Other income (expense), net									(2,059)	(3,201)	(1,444)
(Loss) earnings from continuing operations before income taxes									(78,611)	59,237	88,003
Income tax benefit (provision)									37,142	60,218	152,197
(Loss) earnings from continuing operations									(41,469)	119,455	240,200
Less: earnings from discontinued operations, net of tax									189	17	174,673
Net (loss) earnings									(41,280)	119,472	414,873
Net (earnings) loss attributable to noncontrolling interests									0	0	0
Net (loss) earnings attributable to IAC shareholders									(41,280)	119,472	414,873
Comprehensive income attributable to IAC shareholders									(76,431)	55,069	340,219
Guarantor Subsidiaries
Condensed Statements of Operations
Revenue									1,381,525	1,635,345	1,637,345
Operating Costs and Expenses [Abstract]
Cost of revenue (exclusive of depreciation shown separately below)									302,293	334,931	414,255
Selling and marketing expense									689,933	819,354	696,173
General and administrative expense									163,315	157,013	127,122
Product development expense									82,071	85,582	76,482
Depreciation									31,366	27,276	25,670
Amortization of intangibles									41,157	102,622	31,863
Goodwill impairment									253,245	14,056
Total operating costs and expenses									1,563,380	1,540,834	1,371,565
Operating (loss) income									(181,855)	94,511	265,780
Equity in earnings (losses) of unconsolidated affiliates									(23,573)	18,137	3,369
Interest expense									0	(6,130)	(4,187)
Other income (expense), net									10,040	27,903	6,381
(Loss) earnings from continuing operations before income taxes									(195,388)	134,421	271,343
Income tax benefit (provision)									60,504	(47,280)	(104,606)
(Loss) earnings from continuing operations									(134,884)	87,141	166,737
Less: earnings from discontinued operations, net of tax									0	0	0
Net (loss) earnings									(134,884)	87,141	166,737
Net (earnings) loss attributable to noncontrolling interests									0	0	0
Net (loss) earnings attributable to IAC shareholders									(134,884)	87,141	166,737
Comprehensive income attributable to IAC shareholders									(115,899)	83,664	158,538
Non-Guarantor Subsidiaries
Condensed Statements of Operations
Revenue									1,771,568	1,605,597	1,484,041
Operating Costs and Expenses [Abstract]
Cost of revenue (exclusive of depreciation shown separately below)									452,990	443,700	447,704
Selling and marketing expense									565,906	531,872	457,401
General and administrative expense									294,132	275,485	211,222
Product development expense									111,007	95,873	78,365
Depreciation									38,700	33,011	34,060
Amortization of intangibles									38,269	37,330	26,063
Goodwill impairment									22,122	0
Total operating costs and expenses									1,523,126	1,417,271	1,254,815
Operating (loss) income									248,442	188,326	229,226
Equity in earnings (losses) of unconsolidated affiliates									0	0	0
Interest expense									(82,234)	(18,101)	(139)
Other income (expense), net									52,480	12,219	(57,421)
(Loss) earnings from continuing operations before income taxes									218,688	182,444	171,666
Income tax benefit (provision)									(32,712)	(42,454)	(82,963)
(Loss) earnings from continuing operations									185,976	139,990	88,703
Less: earnings from discontinued operations, net of tax									9	(12)	570
Net (loss) earnings									185,985	139,978	89,273
Net (earnings) loss attributable to noncontrolling interests									(25,129)	6,098	5,643
Net (loss) earnings attributable to IAC shareholders									160,856	146,076	94,916
Comprehensive income attributable to IAC shareholders									$ 114,376	$ 80,248	$ 23,409

GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION - CONDENSED STATEMENT OF CASH FLOWS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Condensed Statement of Cash Flows
Net cash (used in) provided by operating activities attributable to continuing operations	$ 292,377	$ 349,405	$ 424,048
Cash flows from investing activities attributable to continuing operations:
Acquisitions, net of cash acquired	(18,403)	(617,402)	(259,391)
Capital expenditures	(78,039)	(62,049)	(57,233)
Investments in time deposits	(87,500)	0	0
Proceeds from maturities of time deposits	87,500	0	0
Proceeds from maturities and sales of marketable debt securities	252,369	218,462	21,644
Purchases of marketable debt securities	(313,943)	(93,134)	(175,826)
Purchases of investments	(12,565)	(34,470)	(24,334)
Net proceeds from the sale of businesses, investments and assets	172,228	9,413	58,388
Intercompany	0
Other, net	11,215	(3,541)	(3,042)
Net cash provided by (used in) investing activities attributable to continuing operations	12,862	(582,721)	(439,794)
Cash flows from financing activities attributable to continuing operations:
Principal payments on Match Group Term Loan	(450,000)	0	0
Borrowings under Match Group Term Loan	0	788,000	0
Proceeds from Match Group 2016 Senior Notes offering	400,000	0	0
Principal payments on IAC debt, including redemptions and repurchases of Senior Notes	(126,409)	(80,000)	0
Debt issuance costs	(7,811)	(19,050)	(383)
Fees and expenses related to note exchange	0	(6,954)	0
Proceeds from Match Group initial public offering, net of fees and expenses	0	428,789	0
Purchase of treasury stock	(308,948)	(200,000)	0
Dividends	0	(113,196)	(97,338)
Issuance of IAC common stock pursuant to stock-based awards, net of withholding taxes	(895)	(38,418)	1,609
Issuance of Match Group common stock pursuant to stock- based awards, net of withholding taxes	9,548	0	0
Repurchase of stock-based awards	0	(23,431)	0
Excess tax benefits from stock-based awards	51,764	56,418	44,957
Purchase of noncontrolling interests	(2,740)	(32,207)	(33,165)
Acquisition-related contingent consideration payments	(2,180)	(5,750)	(8,109)
Funds held in escrow for MyHammer tender offer	(10,548)	0	0
Intercompany	0	0	0
Other, net	(2,846)	(19,393)	11,449
Net cash (used in) provided by financing activities attributable to continuing operations	(451,065)	734,808	(80,980)
Total cash (used in) provided by continuing operations	(145,826)	501,492	(96,726)
Total cash used in discontinued operations	0	(152)	(145)
Effect of exchange rate changes on cash and cash equivalents	(6,434)	(10,298)	(13,168)
Net (decrease) increase in cash and cash equivalents	(152,260)	491,042	(110,039)
Cash and cash equivalents at beginning of period	1,481,447	990,405	1,100,444
Cash and cash equivalents at end of period	1,329,187	1,481,447	990,405
Eliminations
Condensed Statement of Cash Flows
Net cash (used in) provided by operating activities attributable to continuing operations	0
Cash flows from investing activities attributable to continuing operations:
Acquisitions, net of cash acquired	0
Capital expenditures	0
Investments in time deposits	0
Proceeds from maturities of time deposits	0
Proceeds from maturities and sales of marketable debt securities	0
Purchases of marketable debt securities	0
Purchases of investments	0
Net proceeds from the sale of businesses, investments and assets	0
Intercompany	215,711
Other, net	0
Net cash provided by (used in) investing activities attributable to continuing operations	215,711
Cash flows from financing activities attributable to continuing operations:
Principal payments on Match Group Term Loan	0
Proceeds from Match Group 2016 Senior Notes offering	0
Principal payments on IAC debt, including redemptions and repurchases of Senior Notes	0
Debt issuance costs	0
Purchase of treasury stock	0
Issuance of IAC common stock pursuant to stock-based awards, net of withholding taxes	0
Issuance of Match Group common stock pursuant to stock- based awards, net of withholding taxes	0
Excess tax benefits from stock-based awards	0
Purchase of noncontrolling interests	0
Acquisition-related contingent consideration payments	0
Funds held in escrow for MyHammer tender offer	0
Intercompany	(215,711)
Other, net	0
Net cash (used in) provided by financing activities attributable to continuing operations	(215,711)
Total cash (used in) provided by continuing operations	0
Effect of exchange rate changes on cash and cash equivalents	0
Net (decrease) increase in cash and cash equivalents	0
Cash and cash equivalents at beginning of period	0
Cash and cash equivalents at end of period	0	0
IAC
Condensed Statement of Cash Flows
Net cash (used in) provided by operating activities attributable to continuing operations	(84,770)	(139,227)	(109,745)
Cash flows from investing activities attributable to continuing operations:
Acquisitions, net of cash acquired	0	0	0
Capital expenditures	(479)	(1,332)	(1,843)
Investments in time deposits	0
Proceeds from maturities of time deposits	0
Proceeds from maturities and sales of marketable debt securities	252,369	218,462	21,644
Purchases of marketable debt securities	(313,943)	(93,134)	(175,826)
Purchases of investments	0	(6,978)	(4,800)
Net proceeds from the sale of businesses, investments and assets	73,843	1,277	0
Intercompany	(215,711)
Other, net	126	3,613	(2,000)
Net cash provided by (used in) investing activities attributable to continuing operations	(203,795)	121,908	(162,825)
Cash flows from financing activities attributable to continuing operations:
Principal payments on Match Group Term Loan	0
Borrowings under Match Group Term Loan		0
Proceeds from Match Group 2016 Senior Notes offering	0
Principal payments on IAC debt, including redemptions and repurchases of Senior Notes	(126,409)	0
Debt issuance costs	0	(1,876)	(383)
Fees and expenses related to note exchange		0
Proceeds from Match Group initial public offering, net of fees and expenses		0
Purchase of treasury stock	(308,948)	(200,000)
Dividends		(113,196)	(97,338)
Issuance of IAC common stock pursuant to stock-based awards, net of withholding taxes	(895)	(38,418)	1,609
Issuance of Match Group common stock pursuant to stock- based awards, net of withholding taxes	0
Excess tax benefits from stock-based awards	22,084	18,034	29,186
Purchase of noncontrolling interests	(1,400)	0	0
Acquisition-related contingent consideration payments	0	0	0
Funds held in escrow for MyHammer tender offer	0
Intercompany	184,233	683,571	321,192
Other, net	(454)	(19,834)	0
Net cash (used in) provided by financing activities attributable to continuing operations	(231,789)	328,281	254,266
Total cash (used in) provided by continuing operations	(520,354)	310,962	(18,304)
Total cash used in discontinued operations		(140)	(116)
Effect of exchange rate changes on cash and cash equivalents	0	0	0
Net (decrease) increase in cash and cash equivalents	(520,354)	310,822	(18,420)
Cash and cash equivalents at beginning of period	1,073,053	762,231	780,651
Cash and cash equivalents at end of period	552,699	1,073,053	762,231
Guarantor Subsidiaries
Condensed Statement of Cash Flows
Net cash (used in) provided by operating activities attributable to continuing operations	203,563	258,582	329,671
Cash flows from investing activities attributable to continuing operations:
Acquisitions, net of cash acquired	0	(6,078)	(97,463)
Capital expenditures	(19,317)	(21,905)	(26,640)
Investments in time deposits	0
Proceeds from maturities of time deposits	0
Proceeds from maturities and sales of marketable debt securities	0	0	0
Purchases of marketable debt securities	0	0	0
Purchases of investments	0	0	(2,087)
Net proceeds from the sale of businesses, investments and assets	1,779	0	0
Intercompany	0
Other, net	643	385	11
Net cash provided by (used in) investing activities attributable to continuing operations	(16,895)	(27,598)	(126,179)
Cash flows from financing activities attributable to continuing operations:
Principal payments on Match Group Term Loan	0
Borrowings under Match Group Term Loan		0
Proceeds from Match Group 2016 Senior Notes offering	0
Principal payments on IAC debt, including redemptions and repurchases of Senior Notes	0	(80,000)
Debt issuance costs	0	0	0
Fees and expenses related to note exchange		0
Proceeds from Match Group initial public offering, net of fees and expenses		0
Purchase of treasury stock	0	0
Dividends		0	0
Issuance of IAC common stock pursuant to stock-based awards, net of withholding taxes	0	0	0
Issuance of Match Group common stock pursuant to stock- based awards, net of withholding taxes	0
Repurchase of stock-based awards		0
Excess tax benefits from stock-based awards	0	0	0
Purchase of noncontrolling interests	0	0	0
Acquisition-related contingent consideration payments	(351)	(240)	(406)
Funds held in escrow for MyHammer tender offer	0
Intercompany	(184,233)	(150,744)	(201,802)
Other, net	(2,084)	0	(1,310)
Net cash (used in) provided by financing activities attributable to continuing operations	(186,668)	(230,984)	(203,518)
Total cash (used in) provided by continuing operations	0		(26)
Total cash used in discontinued operations		0	0
Effect of exchange rate changes on cash and cash equivalents	0	0	26
Net (decrease) increase in cash and cash equivalents	0	0	0
Cash and cash equivalents at beginning of period	0	0	0
Cash and cash equivalents at end of period	0	0	0
Non-Guarantor Subsidiaries
Condensed Statement of Cash Flows
Net cash (used in) provided by operating activities attributable to continuing operations	173,584	230,050	204,122
Cash flows from investing activities attributable to continuing operations:
Acquisitions, net of cash acquired	(18,403)	(611,324)	(161,928)
Capital expenditures	(58,243)	(38,812)	(28,750)
Investments in time deposits	(87,500)
Proceeds from maturities of time deposits	87,500
Proceeds from maturities and sales of marketable debt securities	0	0	0
Purchases of marketable debt securities	0	0	0
Purchases of investments	(12,565)	(27,492)	(17,447)
Net proceeds from the sale of businesses, investments and assets	96,606	8,136	58,388
Intercompany	0
Other, net	10,446	(7,539)	(1,053)
Net cash provided by (used in) investing activities attributable to continuing operations	17,841	(677,031)	(150,790)
Cash flows from financing activities attributable to continuing operations:
Principal payments on Match Group Term Loan	(450,000)
Borrowings under Match Group Term Loan		788,000
Proceeds from Match Group 2016 Senior Notes offering	400,000
Principal payments on IAC debt, including redemptions and repurchases of Senior Notes	0	0
Debt issuance costs	(7,811)	(17,174)	0
Fees and expenses related to note exchange		(6,954)
Proceeds from Match Group initial public offering, net of fees and expenses		428,789
Purchase of treasury stock	0	0
Dividends		0	0
Issuance of IAC common stock pursuant to stock-based awards, net of withholding taxes	0	0	0
Issuance of Match Group common stock pursuant to stock- based awards, net of withholding taxes	9,548
Repurchase of stock-based awards		(23,431)
Excess tax benefits from stock-based awards	29,680	38,384	15,771
Purchase of noncontrolling interests	(1,340)	(32,207)	(33,165)
Acquisition-related contingent consideration payments	(1,829)	(5,510)	(7,703)
Funds held in escrow for MyHammer tender offer	(10,548)
Intercompany	215,711	(532,827)	(119,390)
Other, net	(308)	441	12,759
Net cash (used in) provided by financing activities attributable to continuing operations	183,103	637,511	(131,728)
Total cash (used in) provided by continuing operations	374,528	190,530	(78,396)
Total cash used in discontinued operations		(12)	(29)
Effect of exchange rate changes on cash and cash equivalents	(6,434)	(10,298)	(13,194)
Net (decrease) increase in cash and cash equivalents	368,094	180,220	(91,619)
Cash and cash equivalents at beginning of period	408,394	228,174	319,793
Cash and cash equivalents at end of period	$ 776,488	$ 408,394	$ 228,174

QUARTERLY RESULTS (UNAUDITED) (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended								12 Months Ended
	Dec. 30, 2016	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Revenue		$ 811,162	$ 764,102	$ 745,439	$ 819,179	$ 848,728	$ 838,561	$ 771,132	$ 772,512	$ 3,139,882	$ 3,230,933	$ 3,109,547
Cost of revenue		212,468	179,131	170,397	193,734	214,084	199,377	177,963	186,737	755,730	778,161	860,204
Operating income (loss)		112,820	85,584	(252,446)	21,417	(5,430)	87,130	62,769	35,119	(32,625)	179,588	378,727
Earnings (loss) from continuing operations		113,928	52,340	(190,542)	7,934	(31,417)	65,026	57,885	21,863	(16,340)	113,357	234,557
Net earnings (loss)		114,117	52,340	(190,542)	7,934	(31,389)	65,043	57,732	21,988	(16,151)	113,374	409,230
Net earnings (loss) attributable to IAC shareholders		$ 102,051	$ 43,162	$ (194,775)	$ 8,282	$ (31,849)	$ 65,611	$ 59,305	$ 26,405	$ (41,280)	$ 119,472	$ 414,873
Per share information attributable to IAC shareholders:
Basic earnings (loss) per share from continuing operations (in usd per share)		$ 1.29	$ 0.54	$ (2.45)	$ 0.10	$ (0.38)	$ 0.79	$ 0.72	$ 0.31	$ (0.52)	$ 1.44	$ 2.88
Diluted earnings (loss) per share from continuing operations (in usd per share)		1.18	0.49	(2.45)	0.09	(0.38)	0.74	0.68	0.30	(0.52)	1.33	2.71
Basic earnings (loss) per share (in usd per share)		1.29	0.54	(2.45)	0.10	(0.38)	0.79	0.72	0.32	(0.52)	1.44	4.98
Diluted earnings (loss) per share (in usd per share)		$ 1.18	$ 0.49	$ (2.45)	$ 0.09	$ (0.38)	$ 0.74	$ 0.68	$ 0.30	$ (0.52)	$ 1.33	$ 4.68
Additional consolidated financial statement details
Goodwill impairment charges, net of tax				$ 183,500		$ 14,100
Write-down of indefinite-lived intangible assets, net of tax				$ 7,200		$ 55,300
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| PriceRunner
Additional consolidated financial statement details
Gain on sale of business					$ 11,900
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| ShoeBuy
Additional consolidated financial statement details
Gain on sale of business	$ 37,500	$ 37,500

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Allowance for doubtful accounts and revenue reserves
Movement in Valuation Allowances and Reserves
Balance at beginning of period	$ 16,528	$ 12,437	$ 8,540
Charges to earnings	19,070	17,912	15,226
Charges to other accounts	(695)	(536)	(116)
Deductions	(18,498)	(13,285)	(11,213)
Balance at end of period	16,405	16,528	12,437
Sales returns accrual
Movement in Valuation Allowances and Reserves
Balance at beginning of period	828	1,119	1,208
Charges to earnings	14,998	17,569	19,743
Charges to other accounts	(962)	0	0
Deductions	(14,784)	(17,860)	(19,832)
Balance at end of period	80	828	1,119
Deferred tax valuation allowance
Movement in Valuation Allowances and Reserves
Balance at beginning of period	90,482	98,350	62,353
Charges to earnings	(837)	(6,072)	35,119
Charges to other accounts	(1,475)	(1,796)	878
Deductions	0	0	0
Balance at end of period	88,170	90,482	98,350
Other reserves
Movement in Valuation Allowances and Reserves
Balance at beginning of period	2,801	2,204	2,518
Balance at end of period	$ 2,822	$ 2,801	$ 2,204