Financial Instruments (Derivative Instruments Measured At Fair Value) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012		Dec. 31, 2011
Derivatives, Fair Value [Line Items]
Total Fair Value, Derivative assets	$ 5,986	[1]	$ 15,092
Forward Currency Contracts [Member]
Derivatives, Fair Value [Line Items]
Total Fair Value, Derivative assets	5,512	[1]	14,806	[1]
Total Fair Value, Derivative liabilities	(5,313)	[2]	(5,422)	[2]
Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Total Fair Value, Derivative assets	474	[1]	286	[1]
Fair Value Of Derivatives Designated As Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Total Fair Value, Derivative assets	3,423	[1]	9,619
Fair Value Of Derivatives Designated As Hedging Instruments [Member] | Forward Currency Contracts [Member]
Derivatives, Fair Value [Line Items]
Total Fair Value, Derivative assets	2,949	[1]	9,333	[1]
Total Fair Value, Derivative liabilities	(3,114)	[2]	(3,368)	[2]
Fair Value Of Derivatives Designated As Hedging Instruments [Member] | Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Total Fair Value, Derivative assets	474	[1]	286	[1]
Fair Value Of Derivatives Not Designated As Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Total Fair Value, Derivative assets	2,563	[1]	5,473
Fair Value Of Derivatives Not Designated As Hedging Instruments [Member] | Forward Currency Contracts [Member]
Derivatives, Fair Value [Line Items]
Total Fair Value, Derivative assets	2,563	[1]	5,473	[1]
Total Fair Value, Derivative liabilities	(2,199)	[2]	(2,054)	[2]
Fair Value Of Derivatives Not Designated As Hedging Instruments [Member] | Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Total Fair Value, Derivative assets				[1]

[1] Derivative assets are recorded to Prepaid expenses and other current assets in the Consolidated Balance Sheet.

[2] Derivative liabilities are recorded as Other current liabilities in the Consolidated Balance Sheet.