CONSOLIDATED STATEMENT OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities:
Net earnings (loss)	$ 109,020	$ (182,608)
Adjustments to reconcile net earnings (loss) to net cash provided by operating activities:
Stock-based compensation expense	72,890	58,949
Depreciation	38,227	33,370
Amortization of intangibles	17,785	50,795
Goodwill impairment	0	275,367
Deferred income taxes	6,580	(90,902)
Acquisition-related contingent consideration fair value adjustments	4,886	10,470
Gain from the sale of businesses and investments, net	(19,663)	(13,137)
Impairment of long-term investments	4,799	2,702
Acquisition-related contingent consideration payment	(11,140)	0
Other adjustments, net	22,624	13,975
Changes in assets and liabilities, net of effects of acquisitions and dispositions:
Accounts receivable	(22,799)	47,855
Other assets	(18,492)	(20,053)
Accounts payable and other current liabilities	(2,510)	(88,150)
Income taxes payable and receivable	(59,735)	(48,028)
Deferred revenue	15,234	32,589
Net cash provided by operating activities	157,706	83,194
Cash flows from investing activities:
Acquisitions, net of cash acquired	(49,164)	(2,524)
Capital expenditures	(41,821)	(35,133)
Investments in time deposits	0	(87,500)
Proceeds from maturities of time deposits	0	87,500
Proceeds from maturities and sales of marketable debt securities	99,350	32,500
Purchases of marketable debt securities	(24,909)	(79,366)
Purchases of investments	(5,105)	(5,056)
Net proceeds from the sale of businesses and investments	119,697	103,735
Other, net	1,076	4,815
Net cash provided by investing activities	99,124	18,971
Cash flows from financing activities:
Purchase of IAC treasury stock	(56,424)	(214,635)
Proceeds from Match Group 2016 Senior Notes offering	0	400,000
Principal payment on Match Group Term Loan	0	(410,000)
Debt issuance costs for Match Group 2016 Senior Notes offering	0	(4,621)
Repurchases of IAC Senior Notes	(31,590)	(61,110)
Proceeds from the exercise of IAC stock options	48,146	10,951
Withholding taxes paid on behalf of IAC net settled stock-based awards	(49,900)	(24,048)
Proceeds from the exercise of Match Group stock options	39,403	8,671
Withholding taxes paid on behalf of Match Group net settled stock-based awards	(28,421)	(6,495)
Purchase of noncontrolling interests	(12,361)	(2,411)
Acquisition-related contingent consideration payments	(3,860)	(2,150)
Funds returned from escrow for MyHammer tender offer	10,604	0
Decrease (increase) in restricted cash related to bond redemptions	20,141	(30,002)
Other, net	(4,873)	(488)
Net cash used in financing activities	(69,135)	(336,338)
Total cash provided (used)	187,695	(234,173)
Effect of exchange rate changes on cash and cash equivalents	5,418	(1,290)
Net increase (decrease) in cash and cash equivalents	193,113	(235,463)
Cash and cash equivalents at beginning of period	1,329,187	1,481,447
Cash and cash equivalents at end of period	$ 1,522,300	$ 1,245,984