DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES (Balance Sheet Location) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Derivatives, Fair Value [Line Items]
Fair value, derivative asset	$ 39,305	$ 21,032
Fair value, derivative liability	(2,731)	(2,433)
Other current assets
Derivatives, Fair Value [Line Items]
Fair value, derivative asset	2,578	2,884
Other assets
Derivatives, Fair Value [Line Items]
Fair value, derivative asset	36,727	18,148
Other current liabilities
Derivatives, Fair Value [Line Items]
Fair value, derivative liability	(2,067)	(345)
Other non-current liabilities
Derivatives, Fair Value [Line Items]
Fair value, derivative liability	(664)	(2,088)
Designated as Hedging Instrument | Cash Flow Hedging | Foreign currency exchange contracts | Other current assets
Derivatives, Fair Value [Line Items]
Fair value, derivative asset	5	2,286
Designated as Hedging Instrument | Cash Flow Hedging | Foreign currency exchange contracts | Other assets
Derivatives, Fair Value [Line Items]
Fair value, derivative asset	0	538
Designated as Hedging Instrument | Cash Flow Hedging | Foreign currency exchange contracts | Other current liabilities
Derivatives, Fair Value [Line Items]
Fair value, derivative liability	(1,951)	(37)
Designated as Hedging Instrument | Cash Flow Hedging | Foreign currency exchange contracts | Other non-current liabilities
Derivatives, Fair Value [Line Items]
Fair value, derivative liability	(664)	0
Designated as Hedging Instrument | Cash Flow Hedging | Foreign currency option contracts | Other current assets
Derivatives, Fair Value [Line Items]
Fair value, derivative asset	81	389
Designated as Hedging Instrument | Cash Flow Hedging | Foreign currency option contracts | Other assets
Derivatives, Fair Value [Line Items]
Fair value, derivative asset	0	137
Designated as Hedging Instrument | Cash Flow Hedging | Foreign currency option contracts | Other current liabilities
Derivatives, Fair Value [Line Items]
Fair value, derivative liability	(116)	(119)
Designated as Hedging Instrument | Cash Flow Hedging | Foreign currency option contracts | Other non-current liabilities
Derivatives, Fair Value [Line Items]
Fair value, derivative liability	0	(55)
Designated as Hedging Instrument | Cash Flow Hedging | Interest rate swaps | Other assets
Derivatives, Fair Value [Line Items]
Fair value, derivative asset	36,727	17,473
Designated as Hedging Instrument | Cash Flow Hedging | Interest rate swaps | Other non-current liabilities
Derivatives, Fair Value [Line Items]
Fair value, derivative liability	0	(2,033)
Not Designated as Hedging Instrument | Foreign currency exchange contracts | Other current assets
Derivatives, Fair Value [Line Items]
Fair value, derivative asset	2,492	209
Not Designated as Hedging Instrument | Foreign currency exchange contracts | Other current liabilities
Derivatives, Fair Value [Line Items]
Fair value, derivative liability	$ 0	$ (189)