Derivatives (Gains (Losses) With Respect To Derivatives Not Designated As Hedging Instruments On The Consolidated Statements Of Operations) (Details) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Gains (losses) on derivatives not designated as hedging instruments	$ (3,571)	$ 12,505	$ (12,118)	$ 16,435
Forward Foreign Currency Exchange Rate Contracts [Member]
Gains (losses) on derivatives not designated as hedging instruments	(3,139)	7,133	(9,397)	12,351
Interest Rate Swaps [Member]
Gains (losses) on derivatives not designated as hedging instruments	(1)	(10)	(3)	34
Equity Swaps And Other [Member]
Gains (losses) on derivatives not designated as hedging instruments	$ (431)	$ 5,382	$ (2,718)	$ 4,050