Derivative Instruments, Hedging Activities and Fair Value (Details) (USD $)			9 Months Ended
	Dec. 31, 2012	Sep. 30, 2013 Derivatives Designated as Hedging Instruments	Sep. 30, 2013 Derivatives Designated as Hedging Instruments Minimum	Sep. 30, 2013 Derivatives Designated as Hedging Instruments Maximum	Sep. 30, 2013 Derivatives Designated as Hedging Instruments Foreign currency forward exchange contracts Other current assets	Sep. 30, 2013 Derivatives Designated as Hedging Instruments Foreign currency forward exchange contracts Other current liabilities	Sep. 30, 2013 Derivatives Designated as Hedging Instruments Cross currency interest rate swaps Other current assets	Sep. 30, 2013 Derivatives Designated as Hedging Instruments Cross currency interest rate swaps Other assets	Dec. 31, 2012 Derivatives Designated as Hedging Instruments Cross currency interest rate swaps Other assets	Sep. 30, 2013 Derivatives Designated as Hedging Instruments Cross currency interest rate swaps Other current liabilities	Sep. 30, 2013 Derivatives Designated as Hedging Instruments Cross currency interest rate swaps Noncurrent liabilities	Dec. 31, 2012 Derivatives Designated as Hedging Instruments Cross currency interest rate swaps Noncurrent liabilities	Sep. 30, 2013 Derivatives Not Designated as Hedging Instruments Foreign currency forward exchange contracts Other current assets	Dec. 31, 2012 Derivatives Not Designated as Hedging Instruments Foreign currency forward exchange contracts Other current assets	Sep. 30, 2013 Derivatives Not Designated as Hedging Instruments Foreign currency forward exchange contracts Other current liabilities	Dec. 31, 2012 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	$ (100,000)
Asset Derivatives		31,967,000			0		166,000	31,801,000	39,058,000				789,000	853,000
Liability Derivatives		$ 12,396,000				$ 18,000				$ 0	$ 12,378,000	$ 14,346,000			$ 3,001,000	$ 1,775,000