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Derivatives Measured at Fair Value and Disclosed by Balance Sheet Location (Detail) (USD $)
In Thousands, unless otherwise specified |
Dec. 31, 2013
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Dec. 31, 2012
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|---|---|---|
| Derivatives, Fair Value [Line Items] | ||
| Derivative assets, fair value | $ 27,471 | $ 32,989 |
| Derivative liabilities, fair value | 19,478 | 39,486 |
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Designated as Hedging Instrument | Fuel Swaps | Prepaid Expenses and Other Assets
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| Derivatives, Fair Value [Line Items] | ||
| Derivative assets, fair value | 5,024 | 5,955 |
| Derivative liabilities, fair value | 666 | 876 |
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Designated as Hedging Instrument | Fuel Swaps | Other long-term assets
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| Derivatives, Fair Value [Line Items] | ||
| Derivative assets, fair value | 6,869 | 3,969 |
| Derivative liabilities, fair value | 9 | 388 |
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Designated as Hedging Instrument | Fuel Swaps | Accrued expenses and other liabilities
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| Derivatives, Fair Value [Line Items] | ||
| Derivative assets, fair value | 188 | |
| Derivative liabilities, fair value | 204 | |
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Designated as Hedging Instrument | Fuel Swaps | Other long-term liabilities
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| Derivatives, Fair Value [Line Items] | ||
| Derivative assets, fair value | 391 | |
| Derivative liabilities, fair value | 42 | |
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Designated as Hedging Instrument | Fuel Collars | Prepaid Expenses and Other Assets
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| Derivatives, Fair Value [Line Items] | ||
| Derivative assets, fair value | 452 | 1,615 |
| Derivative liabilities, fair value | 195 | 530 |
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Designated as Hedging Instrument | Fuel Collars | Accrued expenses and other liabilities
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| Derivatives, Fair Value [Line Items] | ||
| Derivative assets, fair value | 51 | |
| Derivative liabilities, fair value | 69 | |
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Designated as Hedging Instrument | Fuel Collars | Other long-term liabilities
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| Derivatives, Fair Value [Line Items] | ||
| Derivative assets, fair value | 1,908 | |
| Derivative liabilities, fair value | 1,230 | |
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Designated as Hedging Instrument | Foreign Exchange Option | Accrued expenses and other liabilities
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| Derivatives, Fair Value [Line Items] | ||
| Derivative liabilities, fair value | 9,815 | 20,267 |
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Designated as Hedging Instrument | Foreign Exchange Option | Other long-term liabilities
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| Derivatives, Fair Value [Line Items] | ||
| Derivative liabilities, fair value | 16,443 | |
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Designated as Hedging Instrument | Foreign Exchange Forward | Prepaid Expenses and Other Assets
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| Derivatives, Fair Value [Line Items] | ||
| Derivative assets, fair value | 2,624 | 11,685 |
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Designated as Hedging Instrument | Foreign Exchange Forward | Accrued expenses and other liabilities
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| Derivatives, Fair Value [Line Items] | ||
| Derivative liabilities, fair value | 6,582 | |
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Designated as Hedging Instrument | Foreign Currency Collar | Prepaid Expenses and Other Assets
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| Derivatives, Fair Value [Line Items] | ||
| Derivative assets, fair value | 12,502 | |
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Designated as Hedging Instrument | Foreign Currency Collar | Other long-term assets
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| Derivatives, Fair Value [Line Items] | ||
| Derivative assets, fair value | 9,765 | |
| Derivative liabilities, fair value | 1,613 | |
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Designated as Hedging Instrument | Interest Rate Swap | Accrued expenses and other liabilities
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| Derivatives, Fair Value [Line Items] | ||
| Derivative liabilities, fair value | 1,707 | |
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Designated as Hedging Instrument | Interest Rate Swap | Other long-term liabilities
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| Derivatives, Fair Value [Line Items] | ||
| Derivative liabilities, fair value | 1,374 | |
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Not Designated as Hedging Instrument | Fuel Options | Prepaid Expenses and Other Assets
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| Derivatives, Fair Value [Line Items] | ||
| Derivative liabilities, fair value | 195 | 304 |
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Not Designated as Hedging Instrument | Fuel Options | Other long-term liabilities
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| Derivatives, Fair Value [Line Items] | ||
| Derivative liabilities, fair value | $ 1,231 |