FAIR VALUE MEASUREMENTS (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Investments	$ 63,926		$ 63,926		$ 588
Derivatives Not Designated as Hedging Instruments
Foreign exchange gains (losses), net of derivative activity	3,400	$ (4,200)	(2,900)	$ (7,600)
Derivatives Designated as Hedging Instruments
Net cash inflow from foreign currency contracts			453,818	14,354
Net cash outflow on settlement of foreign currency contracts included in investing activities			448,640	94,661
Foreign Currency Contracts [Member]
Derivatives Not Designated as Hedging Instruments
Net cash outflow from settlement of derivative contracts included in operating activities			20,100	10,000
Foreign Currency Contracts [Member] | Net Investment Hedging [Member]
Derivatives Designated as Hedging Instruments
Net cash inflow from foreign currency contracts			5,200
Net cash outflow on settlement of foreign currency contracts included in investing activities				80,300
Foreign Exchange Contracts, Translation Risk [Member] | Foreign Currency Contracts [Member]
Derivatives Not Designated as Hedging Instruments
Foreign exchange gains (losses) recorded in Foreign currency transactions and other	(6,400)	8,300	(6,200)	12,500
Foreign Exchange Contracts, Transaction Risk [Member] | Foreign Currency Contracts [Member]
Derivatives Not Designated as Hedging Instruments
Foreign exchange gains (losses) recorded in Foreign currency transactions and other	13,400	$ (15,000)	(12,600)	$ (19,000)
Foreign currency derivative instruments not designated as hedging instruments at fair value, net	100		100		200
Foreign exchange derivative liabilities recorded in Accrued expenses and other current liabilities	300		300		100
Foreign exchange derivative assets recorded in Prepaid expenses and other current assets	$ 400		$ 400		$ 300