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Other Assets - Schedule of Other Assets (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
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Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] |  |
Capitalized repair and maintenance costs | $ 315 | $ 230
Pension assets | 97 | 57
Deferred income taxes | 291 | 303
Miscellaneous | 94 | 87
Total other assets | $ 797 | $ 677

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