Derivative Financial Instruments (Fair Value Of Derivative Instruments And Location On Financial Statements) (Details) (USD $) In Thousands | Sep. 30, 2011 | Dec. 31, 2010 |
|---|---|---|
| Derivatives, Fair Value [Line Items] | ||
| Accumulated other comprehensive income (loss) | $ (48,798) | $ (18,235) |
Designated As Hedging Instrument [Member] | Prepaid Expenses And Other Current Assets [Member] | Cash Flow [Member] | ||
| Derivatives, Fair Value [Line Items] | ||
| Fair Value of Assets | 8,658 | 10,186 |
Designated As Hedging Instrument [Member] | Other Assets [Member] | Cash Flow [Member] | ||
| Derivatives, Fair Value [Line Items] | ||
| Fair Value of Assets | 4,353 | 26,638 |
Designated As Hedging Instrument [Member] | Accrued Expenses And Other Current Liabilities [Member] | Cash Flow [Member] | ||
| Derivatives, Fair Value [Line Items] | ||
| Fair Value of Liabilities | 24,868 | 44,577 |
Designated As Hedging Instrument [Member] | Other Liabilities [Member] | Cash Flow [Member] | ||
| Derivatives, Fair Value [Line Items] | ||
| Fair Value of Liabilities | 62,272 | 19,728 |
Not Designated As Hedging Instrument [Member] | Prepaid Expenses And Other Current Assets [Member] | ||
| Derivatives, Fair Value [Line Items] | ||
| Fair Value of Assets | 1,202 | |
Not Designated As Hedging Instrument [Member] | Other Assets [Member] | ||
| Derivatives, Fair Value [Line Items] | ||
| Fair Value of Assets | ||
Not Designated As Hedging Instrument [Member] | Accrued Expenses And Other Current Liabilities [Member] | ||
| Derivatives, Fair Value [Line Items] | ||
| Fair Value of Liabilities | 12,311 | 58 |
Not Designated As Hedging Instrument [Member] | Other Liabilities [Member] | ||
| Derivatives, Fair Value [Line Items] | ||
| Fair Value of Liabilities |