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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 | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Interest rate swaps | $ (248) | $ (603) | $ (725) | $ (1,324)
Depreciation and amortization expenses | (435) | (410) | (1,265) | (1,190)
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 | (2) | 8 | (1) | 36
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 | 6 | 11 | 18 | 36
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) | (17) | (17)
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 | $ (2) | $ 3 | $ (2) | $ 17

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