SEGMENT INFORMATION (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Revenue and long-lived assets by geography
Revenue	$ 740,247	$ 742,249
Long-lived assets (excluding goodwill and intangible assets)	291,111		293,964
United States
Revenue and long-lived assets by geography
Revenue	504,403	514,614
Long-lived assets (excluding goodwill and intangible assets)	269,057		271,916
All Other Countries [Member]
Revenue and long-lived assets by geography
Revenue	235,844	227,635
Long-lived assets (excluding goodwill and intangible assets)	$ 22,054		$ 22,048