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Commitments and Contingencies - Schedule of Personal Injury Liability Activity (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Loss Contingency Accrual [Roll Forward] |  |  |
Current portion, ending balance at December 31 | $ 319 | $ 307 |
Personal Injury |  |  |
Loss Contingency Accrual [Roll Forward] |  |  |
Beginning balance | 383 | 361 | $ 325
Current year accruals | 121 | 112 | 107
Changes in estimates for prior years | (14) | 89 | 55
Payments | (111) | (179) | (126)
Ending balance at December 31 | 379 | 383 | 361
Current portion, ending balance at December 31 | $ 106 | $ 113 | $ 84

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