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, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Derivative Instruments Gain Loss [Line Items]        
Amount of Gain (Loss) Recognized in Other Comprehensive Income $ 1,157 $ (4,577) $ 48,410 $ (23,052)
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income 3,150 (2,547) 6,483 7,327
Fuel 1,454,755 1,383,610 2,842,178 2,664,028
Depreciation and amortization 222,405 197,115 445,334 391,905
Other income (expense), net 1,896 (8,043) 20,033 (16,998)
Fuel        
Derivative Instruments Gain Loss [Line Items]        
Fuel 174,964 164,242 372,698 359,110
Cash Flow Hedging        
Derivative Instruments Gain Loss [Line Items]        
Amount of Gain (Loss) Recognized in Other Comprehensive Income 1,157 (4,577) 48,410 (23,052)
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income 3,150 (2,547) 6,483 7,327
Cash Flow Hedging | Fuel        
Derivative Instruments Gain Loss [Line Items]        
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income 6,838 572 13,415 13,169
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 (4,120) (2,813) (8,239) (5,499)
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 432 (306) 1,307 (343)
Cash Flow Hedging | Fuel contracts        
Derivative Instruments Gain Loss [Line Items]        
Amount of Gain (Loss) Recognized in Other Comprehensive Income 1,035 (12,055) 48,288 (41,070)
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     13,415 13,169
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 (expense) as a result that a forecasted transaction is no longer probable of occurring     1,307 (343)
Cash Flow Hedging | Foreign currency contracts        
Derivative Instruments Gain Loss [Line Items]        
Amount of Gain (Loss) Recognized in Other Comprehensive Income 122 7,478 122 18,018
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     $ (8,239) $ (5,499)
Designated as Hedging Instrument | Fuel contracts | Fuel        
Derivative Instruments Gain Loss [Line Items]        
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income 6,838 572    
Designated as Hedging Instrument | 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 (expense) as a result that a forecasted transaction is no longer probable of occurring 432 (306)    
Designated as Hedging Instrument | 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 $ (4,120) $ (2,813)