Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements and Derivatives - Derivatives Measured at Fair Value and Disclosed by Balance Sheet Location (Details)

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Fair Value Measurements and Derivatives - Derivatives Measured at Fair Value and Disclosed by Balance Sheet Location (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Derivatives, Fair Value [Line Items]    
Derivative assets, fair value $ 155,835 $ 68,113
Derivative liabilities, fair value 222,405 172,557
Designated as Hedging Instrument    
Derivatives, Fair Value [Line Items]    
Derivative assets, fair value 120,504 53,801
Derivative liabilities, fair value 222,405 172,557
Not Designated as Hedging Instrument    
Derivatives, Fair Value [Line Items]    
Derivative assets, fair value 35,889 14,312
Fuel contracts | Designated as Hedging Instrument | Prepaid expenses and other assets    
Derivatives, Fair Value [Line Items]    
Derivative assets, fair value 81,704 29,349
Fuel contracts | Designated as Hedging Instrument | Other long-term assets    
Derivatives, Fair Value [Line Items]    
Derivative assets, fair value 36,764 19,554
Fuel contracts | Not Designated as Hedging Instrument | Prepaid expenses and other assets    
Derivatives, Fair Value [Line Items]    
Derivative assets, fair value 26,743 10,836
Fuel contracts | Not Designated as Hedging Instrument | Other long-term assets    
Derivatives, Fair Value [Line Items]    
Derivative assets, fair value 9,146 3,476
Foreign currency contracts | Designated as Hedging Instrument | Prepaid expenses and other assets    
Derivatives, Fair Value [Line Items]    
Derivative assets, fair value 1,478 4,898
Foreign currency contracts | Designated as Hedging Instrument | Accrued expenses and other liabilities    
Derivatives, Fair Value [Line Items]    
Derivative assets, fair value 558  
Derivative liabilities, fair value 134,845 98,592
Foreign currency contracts | Designated as Hedging Instrument | Other long-term liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities, fair value 87,560 73,496
Interest rate contracts | Designated as Hedging Instrument | Accrued expenses and other liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities, fair value   469
Total derivatives    
Derivatives, Fair Value [Line Items]    
Derivative assets, fair value 156,393 68,113
Derivative liabilities, fair value $ 222,405 $ 172,557