DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES (Balance Sheet Location) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Derivatives, Fair Value [Line Items]
Fair value, derivative asset	$ 4,808	$ 24,206
Fair value, derivative liability	(12,461)	(2,089)
Other current assets
Derivatives, Fair Value [Line Items]
Fair value, derivative asset	427	369
Other assets
Derivatives, Fair Value [Line Items]
Fair value, derivative asset	4,381	23,837
Other current liabilities
Derivatives, Fair Value [Line Items]
Fair value, derivative liability	(1,122)	(2,021)
Other non-current liabilities
Derivatives, Fair Value [Line Items]
Fair value, derivative liability	(11,339)	(68)
Designated as Hedging Instrument | Derivatives designated as cash flow hedges: | Foreign currency exchange contracts | Other current assets
Derivatives, Fair Value [Line Items]
Fair value, derivative asset	304	0
Designated as Hedging Instrument | Derivatives designated as cash flow hedges: | Foreign currency exchange contracts | Other assets
Derivatives, Fair Value [Line Items]
Fair value, derivative asset	159	0
Designated as Hedging Instrument | Derivatives designated as cash flow hedges: | Foreign currency exchange contracts | Other current liabilities
Derivatives, Fair Value [Line Items]
Fair value, derivative liability	(1,083)	(1,569)
Designated as Hedging Instrument | Derivatives designated as cash flow hedges: | Foreign currency exchange contracts | Other non-current liabilities
Derivatives, Fair Value [Line Items]
Fair value, derivative liability	(50)	0
Designated as Hedging Instrument | Derivatives designated as cash flow hedges: | Foreign currency option contracts | Other current assets
Derivatives, Fair Value [Line Items]
Fair value, derivative asset	123	217
Designated as Hedging Instrument | Derivatives designated as cash flow hedges: | Foreign currency option contracts | Other assets
Derivatives, Fair Value [Line Items]
Fair value, derivative asset	63	102
Designated as Hedging Instrument | Derivatives designated as cash flow hedges: | Foreign currency option contracts | Other current liabilities
Derivatives, Fair Value [Line Items]
Fair value, derivative liability	(37)	(106)
Designated as Hedging Instrument | Derivatives designated as cash flow hedges: | Foreign currency option contracts | Other non-current liabilities
Derivatives, Fair Value [Line Items]
Fair value, derivative liability	(33)	(68)
Designated as Hedging Instrument | Derivatives designated as cash flow hedges: | Interest rate swaps | Other assets
Derivatives, Fair Value [Line Items]
Fair value, derivative asset	4,159	23,735
Designated as Hedging Instrument | Derivatives designated as cash flow hedges: | Interest rate swaps | Other non-current liabilities
Derivatives, Fair Value [Line Items]
Fair value, derivative liability	(11,256)	0
Derivatives not designated as hedging instruments: | Foreign currency exchange contracts | Other current assets
Derivatives, Fair Value [Line Items]
Fair value, derivative asset	0	152
Derivatives not designated as hedging instruments: | Foreign currency exchange contracts | Other current liabilities
Derivatives, Fair Value [Line Items]
Fair value, derivative liability	0	(24)
Derivatives not designated as hedging instruments: | Carbon options | Other current liabilities
Derivatives, Fair Value [Line Items]
Fair value, derivative liability	$ (2)	$ (322)