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Changes in Accumulated Other Comprehensive (Loss) Income (Tables) | 12 Months Ended
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Dec. 31, 2023
Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) | The following table presents the changes in accumulated other comprehensive loss by component for the years ended December 31, 2023, 2022 and 2021 (in millions):
|  | Changes related to cash flow derivative hedges |  | Changes in defined benefit plans |  | Foreign currency translation adjustments |  | Accumulated other comprehensive (loss) income
Accumulated comprehensive loss at January 1, 2021 |  | $ | (651) |  |  | $ | (66) |  |  | $ | (23) |  |  | $ | (740) |
Other comprehensive (loss) income before reclassifications |  | (17) |  |  | 5 |  |  | 16 |  |  | 4 |
Amounts reclassified from accumulated other comprehensive loss |  | 21 |  |  | 4 |  |  | — |  |  | 25 |
Net current-period other comprehensive income |  | 4 |  |  | 9 |  |  | 16 |  |  | 29 |
Accumulated comprehensive loss at January 1, 2022 |  | (647) |  |  | (57) |  |  | (7) |  |  | (711) |
Other comprehensive income before reclassifications |  | 171 |  |  | 46 |  |  | 10 |  |  | 227 |
Amounts reclassified from accumulated other comprehensive loss |  | (163) |  |  | 3 |  |  | — |  |  | (160) |
Net current-period other comprehensive income |  | 8 |  |  | 49 |  |  | 10 |  |  | 67 |
Accumulated comprehensive loss at January 1, 2023 |  | (639) |  |  | (8) |  |  | 3 |  |  | (644) |
Other comprehensive income (loss) before reclassifications |  | 3 |  |  | 6 |  |  | (9) |  |  | — |
Amounts reclassified from accumulated other comprehensive loss |  | (30) |  |  | — |  |  | — |  |  | (30) |
Net current-period other comprehensive (loss) income |  | (27) |  |  | 6 |  |  | (9) |  |  | (30) |
Accumulated comprehensive loss at December 31, 2023 |  | $ | (666) |  |  | $ | (2) |  |  | $ | (6) |  |  | $ | (674) |
Reclassification out of Accumulated Other Comprehensive Income | The following table presents reclassifications out of accumulated other comprehensive loss for the years ended December 31, 2023, 2022 and 2021 (in millions):
|  | Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Loss into (Loss) Income
Details about Accumulated Other Comprehensive Loss Components |  | Year Ended December 31, 2023 |  | Year Ended December 31, 2022 |  | Year Ended December 31, 2021 |  | Affected Line Item in Statements of Comprehensive Income (Loss)
Gain (loss) on cash flow derivative hedges: |  |  |  |  |  |  |  |
Interest rate swaps |  | $ | 49 |  |  | $ | (12) |  |  | $ | (44) |  |  | Interest expense, net of interest capitalized
Foreign currency forward contracts |  | (18) |  |  | (17) |  |  | (15) |  |  | Depreciation and amortization expenses
Foreign currency forward contracts |  | (10) |  |  | (3) |  |  | (3) |  |  | Other (expense) income
Fuel swaps |  | — |  |  | — |  |  | — |  |  | Other (expense) income
Fuel swaps |  | 9 |  |  | 195 |  |  | 41 |  |  | Fuel
|  | 30 |  |  | 163 |  |  | (21) |  |  |
Amortization of defined benefit plans: |  |  |  |  |  |  |  |
Actuarial loss |  | — |  |  | (3) |  |  | (4) |  |  | Payroll and related
Total reclassifications for the period |  | $ | 30 |  |  | $ | 160 |  |  | $ | (25) |  |  |

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