Financial Instruments And Risk Management (Effect Of Derivative Instruments On The Consolidated Statements Of Operations Derivatives Not Designated As Hedging Instruments) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in Earnings on Derivatives	$ 20,740	$ (29,215)	$ (20,158)
Foreign Currency Forward Contracts [Member] | Other Income (Expense), Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in Earnings on Derivatives	20,740	(29,215)	(20,158)
Cash Conversion Feature Of Cash Convertible Notes [Member] | Other Income (Expense), Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in Earnings on Derivatives	12,400	(61,800)	(174,850)
Purchased Cash Convertible Note Hedge [Member] | Other Income (Expense), Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in Earnings on Derivatives	$ (12,400)	$ 61,800	$ 174,850