SEGMENT INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Segment reporting information
Revenue	$ 740,247	$ 742,249
Operating income	71,712	84,551
Adjusted EBITDA	108,095	126,766
Reconciliation of Adjusted EBITDA to operating income (loss) for the entity's reportable segments
Non-Cash Compensation Expense	(9,613)	(12,663)
Depreciation	(14,818)	(14,016)
Amortization of Intangibles	(11,979)	(14,078)
Acquisition-related contingent consideration fair value adjustments	27	(1,458)
Operating income	71,712	84,551
Search & Applications
Segment reporting information
Revenue	398,035	397,192
Operating income	70,337	86,983
Adjusted EBITDA	82,071	97,514
Reconciliation of Adjusted EBITDA to operating income (loss) for the entity's reportable segments
Non-Cash Compensation Expense	0	(3)
Depreciation	(4,465)	(3,865)
Amortization of Intangibles	(7,269)	(6,663)
Operating income	70,337	86,983
The Match Group
Segment reporting information
Revenue	211,187	192,875
Operating income	39,803	37,359
Adjusted EBITDA	47,430	47,906
Reconciliation of Adjusted EBITDA to operating income (loss) for the entity's reportable segments
Non-Cash Compensation Expense	(17)	157
Depreciation	(5,800)	(4,706)
Amortization of Intangibles	(1,837)	(4,540)
Acquisition-related contingent consideration fair value adjustments	27	(1,458)
Operating income	39,803	37,359
Media
Segment reporting information
Revenue	36,355	44,995
Operating income	(8,566)	(7,157)
Adjusted EBITDA	(7,864)	(6,180)
Reconciliation of Adjusted EBITDA to operating income (loss) for the entity's reportable segments
Non-Cash Compensation Expense	(164)	(205)
Depreciation	(282)	(523)
Amortization of Intangibles	(256)	(249)
Operating income	(8,566)	(7,157)
eCommerce
Segment reporting information
Revenue	94,842	107,297
Operating income	(1,561)	(4,493)
Adjusted EBITDA	2,804	723
Reconciliation of Adjusted EBITDA to operating income (loss) for the entity's reportable segments
Non-Cash Compensation Expense	0	29
Depreciation	(1,748)	(2,619)
Amortization of Intangibles	(2,617)	(2,626)
Operating income	(1,561)	(4,493)
Corporate
Segment reporting information
Operating income	(28,301)	(28,141)
Adjusted EBITDA	(16,346)	(13,197)
Reconciliation of Adjusted EBITDA to operating income (loss) for the entity's reportable segments
Non-Cash Compensation Expense	(9,432)	(12,641)
Depreciation	(2,523)	(2,303)
Operating income	(28,301)	(28,141)
Total Eliminations
Segment reporting information
Revenue	$ (172)	$ (110)