Derivative Financial Instruments (Location And Amounts Of Pre-Tax Gains (Losses) On Cash Flow Hedge Derivatives Financial Instruments) (Details) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Derivative Instruments, Gain (Loss) [Line Items]
Increase (decrease) in Derivative Gains (Losses) Recognized in Accumulated Other Comprehensive Income (Loss) (effective portion)	$ (130,402)	$ 39,995	$ (69,300)	$ 29,337
Net Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (effective portion)	6,978	8,364	33,097	27,259
Foreign Exchange Forward Contracts [Member] | Cash Flow Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Increase (decrease) in Derivative Gains (Losses) Recognized in Accumulated Other Comprehensive Income (Loss) (effective portion)	(130,402)	39,995	(69,300)	29,337
Cash Flow Hedges [Member] | Cost Of Revenues [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (effective portion)	5,756	6,858	27,282	22,990
Cash Flow Hedges [Member] | Selling, General And Administrative Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (effective portion)	$ 1,222	$ 1,506	$ 5,815	$ 4,269