Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements and Derivatives - Effects of Cash Flow Hedge Accounting on Consolidated Statements of Operations (Details)

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Fair Value Measurements and Derivatives - Effects of Cash Flow Hedge Accounting on Consolidated Statements of Operations (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Derivative Instruments Gain Loss [Line Items]        
Fuel $ 1,073,316 $ 249,727 $ 1,808,729 $ 450,582
Depreciation and amortization 181,587 174,262 360,663 344,578
Interest expense, net 144,377 137,259 472,062 961,700
Other income (expense), net 30,991 25,501 69,111 52,744
Fuel        
Derivative Instruments Gain Loss [Line Items]        
Fuel 181,189 54,090 316,698 96,693
Cash Flow Hedging        
Derivative Instruments Gain Loss [Line Items]        
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income 36,075 (13,542) 43,577 (35,380)
Cash Flow Hedging | Fuel        
Derivative Instruments Gain Loss [Line Items]        
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income 37,342 (8,652) 46,151 (16,823)
Cash Flow Hedging | Depreciation and amortization        
Derivative Instruments Gain Loss [Line Items]        
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (1,267) (1,266) (2,534) (2,533)
Cash Flow Hedging | Interest expense, net        
Derivative Instruments Gain Loss [Line Items]        
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income   (2,086) (40) (4,296)
Cash Flow Hedging | Other income (expense), net        
Derivative Instruments Gain Loss [Line Items]        
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income   (1,538)   (11,728)
Cash Flow Hedging | Fuel contracts        
Derivative Instruments Gain Loss [Line Items]        
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income 37,342 (8,652)    
Cash Flow Hedging | Fuel contracts | Fuel        
Derivative Instruments Gain Loss [Line Items]        
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income     46,151 (16,823)
Cash Flow Hedging | Fuel contracts | Other income (expense), net        
Derivative Instruments Gain Loss [Line Items]        
Amount of gain (loss) reclassified from accumulated other comprehensive income (loss) into income as a result that a forecasted transaction is no longer probable of occurring   (1,538)   (11,728)
Cash Flow Hedging | Foreign currency contracts        
Derivative Instruments Gain Loss [Line Items]        
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income $ (1,267) (1,266)    
Cash Flow Hedging | Foreign currency contracts | Depreciation and amortization        
Derivative Instruments Gain Loss [Line Items]        
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income     (2,534) (2,533)
Cash Flow Hedging | Interest rate contracts        
Derivative Instruments Gain Loss [Line Items]        
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income   $ (2,086)    
Cash Flow Hedging | Interest rate contracts | Interest expense, net        
Derivative Instruments Gain Loss [Line Items]        
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income     $ (40) $ (4,296)