Derivative Financial Instruments and Hedging Activities - Statement of Financial Position (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Derivatives, Fair Value [Line Items]
Derivative Asset	$ 24,206	$ 21,032
Derivative Liability	(2,089)	(2,433)
Other current assets
Derivatives, Fair Value [Line Items]
Derivative Asset	369	2,884
Other assets
Derivatives, Fair Value [Line Items]
Derivative Asset	23,837	18,148
Other current liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability	(2,021)	(345)
Other non-current liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability	(68)	(2,088)
Designated as Hedging Instrument | Cash Flow Hedging | Foreign currency exchange contracts | Other current assets
Derivatives, Fair Value [Line Items]
Derivative Asset	0	2,286
Designated as Hedging Instrument | Cash Flow Hedging | Foreign currency exchange contracts | Other assets
Derivatives, Fair Value [Line Items]
Derivative Asset	0	538
Designated as Hedging Instrument | Cash Flow Hedging | Foreign currency exchange contracts | Other current liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability	(1,569)	(37)
Designated as Hedging Instrument | Cash Flow Hedging | Foreign currency option contracts | Other current assets
Derivatives, Fair Value [Line Items]
Derivative Asset	217	389
Designated as Hedging Instrument | Cash Flow Hedging | Foreign currency option contracts | Other assets
Derivatives, Fair Value [Line Items]
Derivative Asset	102	137
Designated as Hedging Instrument | Cash Flow Hedging | Foreign currency option contracts | Other current liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability	(106)	(119)
Designated as Hedging Instrument | Cash Flow Hedging | Foreign currency option contracts | Other non-current liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability	(68)	(55)
Designated as Hedging Instrument | Cash Flow Hedging | Interest rate swaps | Other assets
Derivatives, Fair Value [Line Items]
Derivative Asset	23,735	17,473
Designated as Hedging Instrument | Cash Flow Hedging | Interest rate swaps | Other non-current liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability	0	(2,033)
Not Designated as Hedging Instrument | Foreign currency exchange contracts | Other current assets
Derivatives, Fair Value [Line Items]
Derivative Asset	152	209
Not Designated as Hedging Instrument | Foreign currency exchange contracts | Other current liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability	(24)	(189)
Not Designated as Hedging Instrument | Carbon options | Other current liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability	$ (322)	$ 0