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Changes in Accumulated Other Comprehensive Loss - Schedule of Reclassifications Out of Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Interest rate swaps $ (249) $ (424)
Depreciation and amortization expenses (412) (387)
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Loss into Income | Gain (loss) on cash flow derivative hedges:    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Total reclassifications for the period 5 12
Interest rate swaps | Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Loss into Income | Gain (loss) on cash flow derivative hedges:    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Interest rate swaps 7 14
Foreign currency forward contracts | Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Loss into Income | Gain (loss) on cash flow derivative hedges:    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Depreciation and amortization expenses (6) (6)
Fuel swaps | Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Loss into Income | Gain (loss) on cash flow derivative hedges:    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Fuel $ 4 $ 4