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Supplemental Financial Information - Accrued Liabilities (Details) - USD ($) $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2024 | Dec. 31, 2023
Accrued Liabilities, Current [Abstract] |  |
Voluntary Separation Program | $ 64 | $ 65
Profitsharing and savings plans | 63 | 141
Vacation pay | 578 | 516
Health | 183 | 163
Workers compensation | 141 | 133
Property and income taxes | 70 | 63
Interest | 34 | 34
Bonus and incentive pay | 186 | 2,022
Reinsurance payable | 282 | 190
Other | 269 | 279
Accrued liabilities | 1,870 | $ 3,606
Payment of bonus and incentive pay as a ratification of the labor contract agreement | $ 1,900 |

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