Derivative Instruments, Hedging Activities and Fair Value (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Designated as hedging instrument
Derivative contracts
Asset Derivatives	$ 1,132	$ 17,057
Liability Derivatives	$ 52	0
Designated as hedging instrument | Minimum
Derivative contracts
Period over which gains and losses are reclassified to earnings	10 years
Designated as hedging instrument | Maximum
Derivative contracts
Period over which gains and losses are reclassified to earnings	15 years
Designated as hedging instrument | Foreign currency forward exchange contracts | Other current assets
Derivative contracts
Asset Derivatives	$ 271	1,640
Designated as hedging instrument | Foreign currency forward exchange contracts | Other current liabilities
Derivative contracts
Liability Derivatives	52	0
Designated as hedging instrument | Cross currency interest rate swaps | Other assets
Derivative contracts
Asset Derivatives	861	15,417
Designated as hedging instrument | Cross currency interest rate swaps | Noncurrent liabilities
Derivative contracts
Liability Derivatives	0	0
Derivatives Not Designated as Hedging Instruments | Foreign currency forward exchange contracts | Other current assets
Derivative contracts
Asset Derivatives	1,574	4,188
Derivatives Not Designated as Hedging Instruments | Foreign currency forward exchange contracts | Other current liabilities
Derivative contracts
Liability Derivatives	$ 11,326	$ 1,738