Financial Instruments And Risk Management (Derivatives Designated As Hedging Instruments Fair Values Of Derivative Instruments) (Details) (Designated as Hedging Instrument, USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Derivative [Line Items]
Asset Derivatives, Fair Value	$ 48,912	$ 29,773
Liability Derivatives, Fair Value	10,435	57,733
Other current liabilities | Interest rate swaps
Derivative [Line Items]
Liability Derivatives, Fair Value	10,435	658
Other current liabilities | Foreign currency forward contracts
Derivative [Line Items]
Liability Derivatives, Fair Value	0	57,075
Prepaid expenses and other current assets | Interest rate swaps
Derivative [Line Items]
Asset Derivatives, Fair Value	46,671	29,773
Prepaid expenses and other current assets | Foreign currency forward contracts
Derivative [Line Items]
Asset Derivatives, Fair Value	$ 2,241	$ 0