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Supplemental Financial Information - Accrued Liabilities (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Accrued Liabilities, Current [Abstract] |  |
Voluntary Separation Program | $ 72 | $ 92
Profitsharing and savings plans | 167 | 262
Vacation pay | 484 | 451
Health | 261 | 152
Workers compensation | 164 | 141
Property and income taxes | 37 | 65
Interest | 45 | 46
Deferred supplier payments | 0 | 80
Contract labor and non-contract incentive accruals | 563 | 150
Other | 250 | 185
Accrued liabilities | $ 2,043 | $ 1,624

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