Financial Instruments (Fair Values Of Derivative Instruments Designated As Hedging Instruments) (Details) (Designated As Hedging Instrument [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Derivatives, Fair Value [Line Items]
Total asset derivatives	$ 204	$ 880
Total liability derivatives	633	25,200
Other Assets - Current [Member] | Foreign Exchange Contracts [Member]
Derivatives, Fair Value [Line Items]
Total asset derivatives	204	880
Derivative Liabilities - Current [Member] | Foreign Exchange Contracts [Member]
Derivatives, Fair Value [Line Items]
Total liability derivatives	633	630
Derivative Liabilities - Current [Member] | Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Total liability derivatives		15,004
Other Liabilities - Noncurrent [Member] | Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Total liability derivatives		$ 9,566