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Pension and Postretirement Benefit Plans - Pension Asset Fair Values (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | --- | ---
Levels 1, 2 and 3 | International |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | $ 5,397 | $ 6,341 |
Defined Benefit Plan Assets, Excluding Reconciling Items | Level 1 | International |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 485 | 490 |
Defined Benefit Plan Assets, Excluding Reconciling Items | Level 2 | International |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 3,808 | 4,149 |
Defined Benefit Plan Assets, Excluding Reconciling Items | Level 3 | International |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 507 | 588 |
Defined Benefit Plan Assets, Excluding Reconciling Items | Investments Measured at Net Asset Value | International |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 851 | 1,315 |
Defined Benefit Plan Assets, Excluding Reconciling Items | Levels 1, 2 and 3 | International |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 5,651 | 6,542 |
Equities | Level 1 | International |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 231 | 226 |
Equities | Level 2 | International |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 437 | 513 |
Equities | Level 3 | International |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 1 | 1 |
Equities | Investments Measured at Net Asset Value | International |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 2 | 45 |
Equities | Levels 1, 2 and 3 | International |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 671 | 785 |
Fixed income | Level 1 | International |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 150 | 148 |
Fixed income | Level 2 | International |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 3,248 | 3,501 |
Fixed income | Level 3 | International |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 2 | 2 |
Fixed income | Investments Measured at Net Asset Value | International |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 1 | 719 |
Fixed income | Levels 1, 2 and 3 | International |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 3,401 | 4,370 |
Private equity | Level 1 | International |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 0 | 0 |
Private equity | Level 2 | International |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 21 | 58 |
Private equity | Level 3 | International |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 1 | 2 |
Private equity | Investments Measured at Net Asset Value | International |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 736 | 361 |
Private equity | Levels 1, 2 and 3 | International |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 758 | 421 |
Absolute return | Level 1 | International |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 5 | 10 |
Absolute return | Level 2 | International |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 44 | 1 |
Absolute return | Level 3 | International |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 503 | 583 |
Absolute return | Investments Measured at Net Asset Value | International |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 112 | 189 |
Absolute return | Levels 1, 2 and 3 | International |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 664 | 783 |
Cash and cash equivalents | Level 1 | International |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 99 | 106 |
Cash and cash equivalents | Level 2 | International |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 58 | 76 |
Cash and cash equivalents | Level 3 | International |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 0 | 0 |
Cash and cash equivalents | Investments Measured at Net Asset Value | International |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 0 | 1 |
Cash and cash equivalents | Levels 1, 2 and 3 | International |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 157 | 183 |
Other items to reconcile to fair value of plan assets | Levels 1, 2 and 3 | International |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | (254) | (201) |
U.S. Pension Plans | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 7,498 | 12,348 | $ 12,648
U.S. Pension Plans | International |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 5,397 | 6,341 | 5,891
U.S. Pension Plans | Levels 1, 2 and 3 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 7,498 | 12,348 |
U.S. Pension Plans | Defined Benefit Plan Assets, Excluding Reconciling Items | Level 1 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 2,583 | 2,407 |
U.S. Pension Plans | Defined Benefit Plan Assets, Excluding Reconciling Items | Level 2 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 2,795 | 6,511 |
U.S. Pension Plans | Defined Benefit Plan Assets, Excluding Reconciling Items | Level 3 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 13 | 0 |
U.S. Pension Plans | Defined Benefit Plan Assets, Excluding Reconciling Items | Investments Measured at Net Asset Value | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 2,354 | 3,867 |
U.S. Pension Plans | Defined Benefit Plan Assets, Excluding Reconciling Items | Levels 1, 2 and 3 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 7,745 | 12,785 |
U.S. Pension Plans | Equities | Level 1 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 1,318 | 1,246 |
U.S. Pension Plans | Equities | Level 2 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 0 | 0 |
U.S. Pension Plans | Equities | Level 3 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 0 | 0 |
U.S. Pension Plans | Equities | Investments Measured at Net Asset Value | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 0 | 174 |
U.S. Pension Plans | Equities | Levels 1, 2 and 3 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 1,318 | 1,420 |
U.S. Pension Plans | Fixed income | Level 1 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 1,227 | 1,153 |
U.S. Pension Plans | Fixed income | Level 2 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 2,774 | 6,428 |
U.S. Pension Plans | Fixed income | Level 3 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 0 | 0 |
U.S. Pension Plans | Fixed income | Investments Measured at Net Asset Value | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 0 | 16 |
U.S. Pension Plans | Fixed income | Levels 1, 2 and 3 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 4,001 | 7,597 |
U.S. Pension Plans | Private equity | Level 1 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 0 | 0 |
U.S. Pension Plans | Private equity | Level 2 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 0 | 0 |
U.S. Pension Plans | Private equity | Level 3 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 13 | 0 |
U.S. Pension Plans | Private equity | Investments Measured at Net Asset Value | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 1,179 | 1,622 |
U.S. Pension Plans | Private equity | Levels 1, 2 and 3 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 1,192 | 1,622 |
U.S. Pension Plans | Absolute return | Level 1 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 0 | 1 |
U.S. Pension Plans | Absolute return | Level 2 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 7 | 83 |
U.S. Pension Plans | Absolute return | Level 3 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 0 | 0 |
U.S. Pension Plans | Absolute return | Investments Measured at Net Asset Value | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 899 | 1,314 |
U.S. Pension Plans | Absolute return | Levels 1, 2 and 3 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 906 | 1,398 |
U.S. Pension Plans | Cash and cash equivalents | Level 1 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 38 | 7 |
U.S. Pension Plans | Cash and cash equivalents | Level 2 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 14 | 0 |
U.S. Pension Plans | Cash and cash equivalents | Level 3 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 0 | 0 |
U.S. Pension Plans | Cash and cash equivalents | Investments Measured at Net Asset Value | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 276 | 741 |
U.S. Pension Plans | Cash and cash equivalents | Levels 1, 2 and 3 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 328 | 748 |
U.S. Pension Plans | Other items to reconcile to fair value of plan assets | Levels 1, 2 and 3 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | (247) | (437) |
Postretirement Benefits |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 761 | 980 | $ 1,017
Postretirement Benefits | Levels 1, 2 and 3 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 761 | 980 |
Postretirement Benefits | Defined Benefit Plan Assets, Excluding Reconciling Items | Level 1 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 258 | 245 |
Postretirement Benefits | Defined Benefit Plan Assets, Excluding Reconciling Items | Level 2 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 310 | 508 |
Postretirement Benefits | Defined Benefit Plan Assets, Excluding Reconciling Items | Level 3 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 1 | 0 |
Postretirement Benefits | Defined Benefit Plan Assets, Excluding Reconciling Items | Investments Measured at Net Asset Value | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 216 | 256 |
Postretirement Benefits | Defined Benefit Plan Assets, Excluding Reconciling Items | Levels 1, 2 and 3 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 785 | 1,009 |
Postretirement Benefits | Equities | Level 1 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 122 | 118 |
Postretirement Benefits | Equities | Level 2 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 0 | 0 |
Postretirement Benefits | Equities | Level 3 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 0 | 0 |
Postretirement Benefits | Equities | Investments Measured at Net Asset Value | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 0 | 11 |
Postretirement Benefits | Equities | Levels 1, 2 and 3 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 122 | 129 |
Postretirement Benefits | Fixed income | Level 1 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 129 | 92 |
Postretirement Benefits | Fixed income | Level 2 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 305 | 503 |
Postretirement Benefits | Fixed income | Level 3 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 0 | 0 |
Postretirement Benefits | Fixed income | Investments Measured at Net Asset Value | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 0 | 1 |
Postretirement Benefits | Fixed income | Levels 1, 2 and 3 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 434 | 596 |
Postretirement Benefits | Private equity | Level 1 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 0 | 0 |
Postretirement Benefits | Private equity | Level 2 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 0 | 0 |
Postretirement Benefits | Private equity | Level 3 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 1 | 0 |
Postretirement Benefits | Private equity | Investments Measured at Net Asset Value | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 110 | 108 |
Postretirement Benefits | Private equity | Levels 1, 2 and 3 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 111 | 108 |
Postretirement Benefits | Absolute return | Level 1 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 0 | 0 |
Postretirement Benefits | Absolute return | Level 2 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 4 | 5 |
Postretirement Benefits | Absolute return | Level 3 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 0 | 0 |
Postretirement Benefits | Absolute return | Investments Measured at Net Asset Value | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 80 | 87 |
Postretirement Benefits | Absolute return | Levels 1, 2 and 3 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 84 | 92 |
Postretirement Benefits | Cash and cash equivalents | Level 1 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 7 | 35 |
Postretirement Benefits | Cash and cash equivalents | Level 2 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 1 | 0 |
Postretirement Benefits | Cash and cash equivalents | Level 3 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 0 | 0 |
Postretirement Benefits | Cash and cash equivalents | Investments Measured at Net Asset Value | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 26 | 49 |
Postretirement Benefits | Cash and cash equivalents | Levels 1, 2 and 3 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | 34 | 84 |
Postretirement Benefits | Other items to reconcile to fair value of plan assets | Levels 1, 2 and 3 | United States |  |  |
Benefit Plan Information |  |  |
Fair value of plan assets | $ (24) | $ (29) |

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