Quarterly report [Sections 13 or 15(d)]

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

v3.26.1
Fair Value Measurements and Derivatives - Effects of Cash Flow Hedge Accounting on Consolidated Statements of Operations (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of Gain (Loss) Recognized in Other Comprehensive Loss $ 125,139 $ 30,825
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Expense) 1,589 (4,073)
Fuel 1,377,881 1,303,938
Depreciation and amortization 260,716 231,297
Interest expense, net (165,987) (217,872)
Other income (expense), net 40,703 (24,505)
Fuel    
Derivative Instruments, Gain (Loss) [Line Items]    
Fuel 168,926 175,014
Cash Flow Hedging    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of Gain (Loss) Recognized in Other Comprehensive Loss 125,139 30,825
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Expense) 1,589 (4,073)
Cash Flow Hedging | Fuel    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Expense) 5,007 290
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 (Expense) 705 (244)
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 (Expense) (4,123) (4,119)
Cash Flow Hedging | Fuel contracts    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of Gain (Loss) Recognized in Other Comprehensive Loss 162,316 10,672
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 (Expense) 5,007 290
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 705 (244)
Cash Flow Hedging | Foreign currency contracts    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of Gain (Loss) Recognized in Other Comprehensive Loss (37,177) 20,153
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 (Expense) $ (4,123) $ (4,119)