Financial Instruments And Risk Management (Effect Of Derivative Instruments On The Condensed Consolidated Statements Of Operations Derivatives Not Designated As Hedging Instruments) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Derivative [Line Items]
Amount of Gain or (Loss) Recognized in Earnings on Derivatives	$ 5,255	$ 11,462
Foreign Currency Forward Contracts [Member] | Other (Expense) Income, Net [Member]
Derivative [Line Items]
Amount of Gain or (Loss) Recognized in Earnings on Derivatives	5,255	11,462
Cash Conversion Feature Of Cash Convertible Notes [Member] | Other (Expense) Income, Net [Member]
Derivative [Line Items]
Amount of Gain or (Loss) Recognized in Earnings on Derivatives	(51,600)	(49,300)
Purchased Cash Convertible Note Hedge [Member] | Other (Expense) Income, Net [Member]
Derivative [Line Items]
Amount of Gain or (Loss) Recognized in Earnings on Derivatives	$ 51,600	$ 49,300