SEGMENT INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Segment reporting information
Revenue	$ 782,231	$ 756,872	$ 2,278,793	$ 2,298,532
Operating income	100,953	122,004	268,355	313,251
Reconciliation of Adjusted EBITDA to operating income (loss) for the entity's reportable segments
Adjusted EBITDA	134,588	163,522	384,115	448,226
Non-Cash Compensation Expense	(17,332)	(14,365)	(43,497)	(38,848)
Depreciation	(14,133)	(13,489)	(44,208)	(44,541)
Amortization of Intangibles	(16,451)	(13,032)	(41,836)	(45,247)
Acquisition-related contingent consideration fair value adjustments	14,281	(632)	13,781	(6,339)
Operating income	100,953	122,004	268,355	313,251
Search & Applications
Segment reporting information
Revenue	394,659	407,291	1,188,410	1,231,932
Operating income	80,384	87,756	228,492	264,085
Reconciliation of Adjusted EBITDA to operating income (loss) for the entity's reportable segments
Adjusted EBITDA	93,127	98,512	266,456	298,446
Non-Cash Compensation Expense	0	0	0	(3)
Depreciation	(3,596)	(3,865)	(13,143)	(14,143)
Amortization of Intangibles	(9,147)	(6,891)	(24,821)	(20,215)
Acquisition-related contingent consideration fair value adjustments	0	0	0	0
Operating income	80,384	87,756	228,492	264,085
The Match Group
Segment reporting information
Revenue	230,198	205,196	655,699	596,058
Operating income	66,393	60,164	167,394	150,652
Reconciliation of Adjusted EBITDA to operating income (loss) for the entity's reportable segments
Adjusted EBITDA	61,371	69,328	178,169	184,919
Non-Cash Compensation Expense	(145)	(336)	(332)	(542)
Depreciation	(5,794)	(5,043)	(17,183)	(14,587)
Amortization of Intangibles	(3,320)	(3,153)	(6,841)	(12,799)
Acquisition-related contingent consideration fair value adjustments	14,281	(632)	13,581	(6,339)
Operating income	66,393	60,164	167,394	150,652
Media
Segment reporting information
Revenue	49,895	50,299	122,906	152,789
Operating income	(8,723)	(5,558)	(27,083)	(14,748)
Reconciliation of Adjusted EBITDA to operating income (loss) for the entity's reportable segments
Adjusted EBITDA	(7,702)	(4,541)	(24,477)	(11,724)
Non-Cash Compensation Expense	(161)	(219)	(486)	(637)
Depreciation	(225)	(526)	(731)	(1,573)
Amortization of Intangibles	(635)	(272)	(1,589)	(814)
Acquisition-related contingent consideration fair value adjustments	0	0	200	0
Operating income	(8,723)	(5,558)	(27,083)	(14,748)
eCommerce
Segment reporting information
Revenue	107,825	94,438	312,616	318,326
Operating income	(1,585)	9,285	(3,138)	189
Reconciliation of Adjusted EBITDA to operating income (loss) for the entity's reportable segments
Adjusted EBITDA	3,865	13,649	11,192	18,839
Non-Cash Compensation Expense	(138)	0	(138)	29
Depreciation	(1,963)	(1,648)	(5,607)	(7,260)
Amortization of Intangibles	(3,349)	(2,716)	(8,585)	(11,419)
Acquisition-related contingent consideration fair value adjustments	0	0	0	0
Operating income	(1,585)	9,285	(3,138)	189
Corporate
Segment reporting information
Operating income	(35,516)	(29,643)	(97,310)	(86,927)
Reconciliation of Adjusted EBITDA to operating income (loss) for the entity's reportable segments
Adjusted EBITDA	(16,073)	(13,426)	(47,225)	(42,254)
Non-Cash Compensation Expense	(16,888)	(13,810)	(42,541)	(37,695)
Depreciation	(2,555)	(2,407)	(7,544)	(6,978)
Amortization of Intangibles	0	0	0	0
Acquisition-related contingent consideration fair value adjustments	0
Operating income	(35,516)	(29,643)	(97,310)	(86,927)
Total Eliminations
Segment reporting information
Revenue	$ (346)	$ (352)	$ (838)	$ (573)