Annual report pursuant to Section 13 and 15(d)

Derivatives Measured at Fair Value and Disclosed by Balance Sheet Location (Detail)

v2.4.0.8
Derivatives Measured at Fair Value and Disclosed by Balance Sheet Location (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Derivatives, Fair Value [Line Items]    
Derivative assets, fair value $ 27,471 $ 32,989
Derivative liabilities, fair value 19,478 39,486
Designated as Hedging Instrument | Fuel Swaps | Prepaid Expenses and Other Assets
   
Derivatives, Fair Value [Line Items]    
Derivative assets, fair value 5,024 5,955
Derivative liabilities, fair value 666 876
Designated as Hedging Instrument | Fuel Swaps | Other long-term assets
   
Derivatives, Fair Value [Line Items]    
Derivative assets, fair value 6,869 3,969
Derivative liabilities, fair value 9 388
Designated as Hedging Instrument | Fuel Swaps | Accrued expenses and other liabilities
   
Derivatives, Fair Value [Line Items]    
Derivative assets, fair value   188
Derivative liabilities, fair value   204
Designated as Hedging Instrument | Fuel Swaps | Other long-term liabilities
   
Derivatives, Fair Value [Line Items]    
Derivative assets, fair value   391
Derivative liabilities, fair value   42
Designated as Hedging Instrument | Fuel Collars | Prepaid Expenses and Other Assets
   
Derivatives, Fair Value [Line Items]    
Derivative assets, fair value 452 1,615
Derivative liabilities, fair value 195 530
Designated as Hedging Instrument | Fuel Collars | Accrued expenses and other liabilities
   
Derivatives, Fair Value [Line Items]    
Derivative assets, fair value   51
Derivative liabilities, fair value   69
Designated as Hedging Instrument | Fuel Collars | Other long-term liabilities
   
Derivatives, Fair Value [Line Items]    
Derivative assets, fair value   1,908
Derivative liabilities, fair value   1,230
Designated as Hedging Instrument | Foreign Exchange Option | Accrued expenses and other liabilities
   
Derivatives, Fair Value [Line Items]    
Derivative liabilities, fair value 9,815 20,267
Designated as Hedging Instrument | Foreign Exchange Option | Other long-term liabilities
   
Derivatives, Fair Value [Line Items]    
Derivative liabilities, fair value   16,443
Designated as Hedging Instrument | Foreign Exchange Forward | Prepaid Expenses and Other Assets
   
Derivatives, Fair Value [Line Items]    
Derivative assets, fair value 2,624 11,685
Designated as Hedging Instrument | Foreign Exchange Forward | Accrued expenses and other liabilities
   
Derivatives, Fair Value [Line Items]    
Derivative liabilities, fair value 6,582  
Designated as Hedging Instrument | Foreign Currency Collar | Prepaid Expenses and Other Assets
   
Derivatives, Fair Value [Line Items]    
Derivative assets, fair value 12,502  
Designated as Hedging Instrument | Foreign Currency Collar | Other long-term assets
   
Derivatives, Fair Value [Line Items]    
Derivative assets, fair value   9,765
Derivative liabilities, fair value   1,613
Designated as Hedging Instrument | Interest Rate Swap | Accrued expenses and other liabilities
   
Derivatives, Fair Value [Line Items]    
Derivative liabilities, fair value 1,707  
Designated as Hedging Instrument | Interest Rate Swap | Other long-term liabilities
   
Derivatives, Fair Value [Line Items]    
Derivative liabilities, fair value 1,374  
Not Designated as Hedging Instrument | Fuel Options | Prepaid Expenses and Other Assets
   
Derivatives, Fair Value [Line Items]    
Derivative liabilities, fair value 195 304
Not Designated as Hedging Instrument | Fuel Options | Other long-term liabilities
   
Derivatives, Fair Value [Line Items]    
Derivative liabilities, fair value   $ 1,231