FAIR VALUE MEASUREMENTS (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Foreign Currency Derivatives
Cost Method Investments	$ 62,300	$ 600
Derivatives Not Designated as Hedging Instruments
Foreign exchange gains (losses), net of derivative activity	(13,800)	(11,800)	$ (5,500)
Derivatives Designated as Hedging Instruments
Payments for Hedge, Investing Activities	448,640	94,661	81,870
Proceeds from foreign currency contracts	453,818	14,354	3,266
Foreign Currency Contracts
Derivatives Not Designated as Hedging Instruments
Payments for Derivative Instrument Operating Activities	33,900	8,900
Proceeds for Derivative Instrument Operating Activities			4,400
Derivatives Designated as Hedging Instruments
Payments for Hedge, Investing Activities		80,300	78,600
Proceeds from foreign currency contracts	5,200
Foreign Exchange Contracts, Translation Risk | Foreign Currency Contracts
Derivatives Not Designated as Hedging Instruments
Foreign exchange gains (losses) recorded in "Foreign currency transactions and other"	(6,600)	13,700	300
Foreign Exchange Contracts, Transaction Risk | Foreign Currency Contracts
Derivatives Not Designated as Hedging Instruments
Foreign exchange gains (losses) recorded in "Foreign currency transactions and other"	(15,300)	(21,800)	$ 3,600
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments at Fair Value, Net	(300)	200
Foreign exchange derivative assets recorded in "Prepaid expenses and other current assets"	400	300
Foreign exchange derivative liabilities recorded in "Accrued expenses and other current liabilities"	$ 700	$ 100