Derivative Instruments, Hedging Activities and Fair Value (Details) (USD $) In Thousands, unless otherwise specified					9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014 Derivatives Designated as Hedging Instruments	Dec. 31, 2013 Derivatives Designated as Hedging Instruments	Sep. 30, 2014 Derivatives Designated as Hedging Instruments Minimum	Sep. 30, 2014 Derivatives Designated as Hedging Instruments Maximum	Sep. 30, 2014 Derivatives Designated as Hedging Instruments Foreign currency forward exchange contracts Other current assets	Dec. 31, 2013 Derivatives Designated as Hedging Instruments Foreign currency forward exchange contracts Other current assets	Sep. 30, 2014 Derivatives Designated as Hedging Instruments Foreign currency forward exchange contracts Other current liabilities	Dec. 31, 2013 Derivatives Designated as Hedging Instruments Foreign currency forward exchange contracts Other current liabilities	Sep. 30, 2014 Derivatives Designated as Hedging Instruments Cross currency interest rate swaps Other assets	Dec. 31, 2013 Derivatives Designated as Hedging Instruments Cross currency interest rate swaps Other assets	Sep. 30, 2014 Derivatives Designated as Hedging Instruments Cross currency interest rate swaps Noncurrent liabilities	Dec. 31, 2013 Derivatives Designated as Hedging Instruments Cross currency interest rate swaps Noncurrent liabilities	Sep. 30, 2014 Derivatives Not Designated as Hedging Instruments Foreign currency forward exchange contracts Other current assets	Dec. 31, 2013 Derivatives Not Designated as Hedging Instruments Foreign currency forward exchange contracts Other current assets	Sep. 30, 2014 Derivatives Not Designated as Hedging Instruments Foreign currency forward exchange contracts Other current liabilities	Dec. 31, 2013 Derivatives Not Designated as Hedging Instruments Foreign currency forward exchange contracts Other current liabilities
Derivative contracts
Period over which gains and losses are reclassified to earnings					10 years	15 years
Derivatives subject to enforceable master netting arrangements, net liability	$ (100)	$ (100)
Asset Derivatives			41,941	26,041			136	40			41,805	26,001			392	1,216
Liability Derivatives			$ 11,460	$ 13,427					$ 0	$ 17			$ 11,460	$ 13,410			$ 2,812	$ 3,267