Derivative Financial Instruments (Summary Of Gains / Losses Recognized In Accumulated Other Comprehensive Income (Loss)) (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] | ||||||||||||
| Amount of Gain (Loss) recognized in OCI on Derivatives (Effective Portion) | $ (72,060) | $ 10,466 | ||||||||||
| Amount of Gain (Loss) reclassified from Accumulated OCI into Statement of Income (Effective Portion) | (68) | (19,713) | (25,413) | (55,635) | ||||||||
| Amount of Gain (Loss) recognized in income on Derivative (Ineffective Portion and Amount excluded from Effectiveness Testing) | ||||||||||||
| Amount of (Gain) Loss recognized in Income on Derivatives | 9,613 | (1,924) | 9,610 | (8,477) | ||||||||
Foreign Exchange Contract Previously Designated As Cash Flow Hedges [Member] | Forward Foreign Exchange Contracts [Member] | Foreign Exchange (Gains) Losses, Net [Member] | ||||||||||||
| Derivative Instruments, Gain (Loss) [Line Items] | ||||||||||||
| Amount of (Gain) Loss recognized in Income on Derivatives | 0 | [1] | 0 | [1] | 0 | [1] | (234) | [1] | ||||
Foreign Exchange Contract Previously Designated As Cash Flow Hedges [Member] | Foreign Exchange (Gains) Losses, Net [Member] | ||||||||||||
| Derivative Instruments, Gain (Loss) [Line Items] | ||||||||||||
| Amount of (Gain) Loss recognized in Income on Derivatives | 0 | 0 | 0 | (234) | ||||||||
Revenue [Member] | ||||||||||||
| Derivative Instruments, Gain (Loss) [Line Items] | ||||||||||||
| Amount of Gain (Loss) reclassified from Accumulated OCI into Statement of Income (Effective Portion) | (3,070) | (1,142) | (7,307) | (3,183) | ||||||||
Cost Of Revenue [Member] | ||||||||||||
| Derivative Instruments, Gain (Loss) [Line Items] | ||||||||||||
| Amount of Gain (Loss) reclassified from Accumulated OCI into Statement of Income (Effective Portion) | 2,390 | (15,285) | (15,067) | (42,049) | ||||||||
Selling, General And Administrative Expenses [Member] | ||||||||||||
| Derivative Instruments, Gain (Loss) [Line Items] | ||||||||||||
| Amount of Gain (Loss) reclassified from Accumulated OCI into Statement of Income (Effective Portion) | 612 | (3,286) | (3,039) | (10,403) | ||||||||
Forward Foreign Exchange Contracts [Member] | Foreign Exchange (Gains) Losses, Net [Member] | ||||||||||||
| Derivative Instruments, Gain (Loss) [Line Items] | ||||||||||||
| Amount of (Gain) Loss recognized in Income on Derivatives | 9,613 | [2] | (1,924) | [2] | 9,610 | [2] | (8,243) | [2] | ||||
Forward Foreign Exchange Contracts [Member] | ||||||||||||
| Derivative Instruments, Gain (Loss) [Line Items] | ||||||||||||
| Amount of Gain (Loss) recognized in OCI on Derivatives (Effective Portion) | (72,060) | 10,466 | ||||||||||
Foreign Exchange (Gains) Losses, Net [Member] | ||||||||||||
| Derivative Instruments, Gain (Loss) [Line Items] | ||||||||||||
| Amount of Gain (Loss) recognized in income on Derivative (Ineffective Portion and Amount excluded from Effectiveness Testing) | ||||||||||||
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