Financial Instruments And Risk Management (Derivatives Not Designated As Hedging Instruments Fair Values Of Derivative Instruments) (Details) (Not Designated as Hedging Instruments, USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Derivative [Line Items]
Asset Derivatives, Fair Value	$ 527,820	$ 463,802
Liability Derivatives, Fair Value	526,892	471,760
Prepaid expenses and other current assets | Foreign currency forward contracts
Derivative [Line Items]
Asset Derivatives, Fair Value	3,020	3,802
Other assets | Purchased cash convertible note hedge
Derivative [Line Items]
Asset Derivatives, Fair Value	524,800	460,000
Other current liabilities | Foreign currency forward contracts
Derivative [Line Items]
Liability Derivatives, Fair Value	2,092	11,760
Long-term debt | Cash conversion feature of Cash Convertible Notes
Derivative [Line Items]
Liability Derivatives, Fair Value	$ 524,800	$ 460,000