SEGMENT INFORMATION (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Revenue and long-lived assets by geography
Revenue	$ 782,231	$ 756,872	$ 2,278,793	$ 2,298,532
Long-lived assets (excluding goodwill and intangible assets)	300,955		300,955		293,964
United States
Revenue and long-lived assets by geography
Revenue	544,486	527,675	1,560,751	1,594,169
Long-lived assets (excluding goodwill and intangible assets)	280,133		280,133		271,916
All Other Countries [Member]
Revenue and long-lived assets by geography
Revenue	237,745	229,197	718,042	704,363
Long-lived assets (excluding goodwill and intangible assets)	$ 20,822		$ 20,822		$ 22,048