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Pension and Postretirement Benefit Plans - Change in Benefit Obligation and Plan Assets and Amounts Recognized in Balance Sheet and AOCI (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Apr. 01, 2024
Change in benefit obligation |  |  |  |
Settlements, curtailments, special termination benefits and other | $ 808 |  |  |
Less: discontinued operations |  |  |  | $ (2,700)
​Amounts recognized in the Consolidated Balance Sheet as of December 31, (Millions) |  |  |  |
Non-current assets | 1,243 | $ 1,239 |  |
Accrued benefit cost |  |  |  |
Current liabilities | (75) | (71) |  |
Non-current liabilities | (1,813) | (2,156) |  |
U.S. Pension Plans |  |  |  |
Change in plan assets |  |  |  |
Company contributions | 140 | 142 |  |
Postretirement Benefits |  |  |  |
Change in benefit obligation |  |  |  |
Benefit obligation at beginning of year | 1,897 | 1,797 |  |
Transfers to Solventum | (243) | 0 |  |
Service cost | 21 | 27 | $ 42 |
Interest cost | 80 | 87 | 52 |
Participant contributions | 0 | 0 |  |
Foreign exchange rate changes | (16) | 10 |  |
Plan amendments | 0 | 0 |  |
Actuarial (gain) loss | (112) | 124 |  |
Benefit payments | (118) | (142) |  |
Settlements, curtailments, special termination benefits and other | (6) | (6) |  |
Benefit obligation at end of year | 1,503 | 1,897 | 1,797 |
Less: discontinued operations | 0 | (250) |  |
Benefit obligation - continuing operations | 1,503 | 1,647 |  |
Change in plan assets |  |  |  |
Fair value of plan assets at beginning of year | 980 | 1,017 |  |
Transfers to Solventum | (130) | 0 |  |
Actual return on plan assets | 21 | 102 |  |
Company contributions | 14 | 10 |  |
Participant contributions | 0 | 0 |  |
Foreign exchange rate changes | 0 | (1) |  |
Benefit payments | (118) | (142) |  |
Settlements, curtailments, special termination benefits and other | (6) | (6) |  |
Fair value of plan assets at end of year | 761 | 980 | 1,017 |
Less: discontinued operations | 0 | (133) |  |
Fair value of plan assets - continuing operations | 761 | 847 |  |
Funded status at end of year - continuing operations | (742) | (800) |  |
​Amounts recognized in the Consolidated Balance Sheet as of December 31, (Millions) |  |  |  |
Non-current assets | 0 | 0 |  |
Accrued benefit cost |  |  |  |
Current liabilities | (12) | (11) |  |
Non-current liabilities | (730) | (789) |  |
Ending balance - continuing operations | (742) | (800) |  |
Ending balance - discontinued operations | 0 | (117) |  |
Amounts recognized in accumulated other comprehensive income as of December 31, (Millions) |  |  |  |
Net transition obligation (asset) | 0 | 0 |  |
Net actuarial loss (gain) | 279 | 423 |  |
Prior service cost (credit) | (94) | (135) |  |
Ending balance | 185 | 288 |  |
United States | U.S. Pension Plans |  |  |  |
Change in benefit obligation |  |  |  |
Benefit obligation at beginning of year | 13,498 | 13,505 |  |
Transfers to Solventum | (1,850) | 0 |  |
Service cost | 123 | 171 | 256 |
Interest cost | 522 | 662 | 417 |
Participant contributions | 0 | 0 |  |
Foreign exchange rate changes | 0 | 0 |  |
Plan amendments | 0 | 0 |  |
Actuarial (gain) loss | (721) | 779 |  |
Benefit payments | (823) | (1,504) |  |
Settlements, curtailments, special termination benefits and other | (2,387) | (115) |  |
Benefit obligation at end of year | 8,362 | 13,498 | 13,505 |
Less: discontinued operations | 0 | (1,893) |  |
Benefit obligation - continuing operations | 8,362 | 11,605 |  |
Change in plan assets |  |  |  |
Fair value of plan assets at beginning of year | 12,348 | 12,648 |  |
Transfers to Solventum | (1,808) | 0 |  |
Actual return on plan assets | 99 | 1,144 |  |
Company contributions | 69 | 60 |  |
Participant contributions | 0 | 0 |  |
Foreign exchange rate changes | 0 | 0 |  |
Benefit payments | (823) | (1,504) |  |
Settlements, curtailments, special termination benefits and other | (2,387) | 0 |  |
Fair value of plan assets at end of year | 7,498 | 12,348 | 12,648 |
Less: discontinued operations | 0 | (1,837) |  |
Fair value of plan assets - continuing operations | 7,498 | 10,511 |  |
Funded status at end of year - continuing operations | (864) | (1,094) |  |
​Amounts recognized in the Consolidated Balance Sheet as of December 31, (Millions) |  |  |  |
Non-current assets | 0 | 0 |  |
Accrued benefit cost |  |  |  |
Current liabilities | (50) | (49) |  |
Non-current liabilities | (814) | (1,045) |  |
Ending balance - continuing operations | (864) | (1,094) |  |
Ending balance - discontinued operations | 0 | (56) |  |
Amounts recognized in accumulated other comprehensive income as of December 31, (Millions) |  |  |  |
Net transition obligation (asset) | 0 | 0 |  |
Net actuarial loss (gain) | 2,922 | 4,809 |  |
Prior service cost (credit) | 0 | (17) |  |
Ending balance | 2,922 | 4,792 |  |
Accumulated benefit obligation | 8,094 | 13,073 |  |
Plans with accumulated benefit obligation in excess of plan assets |  |  |  |
Accumulated benefit obligation | 8,094 | 13,073 |  |
Fair value of plan assets | 7,498 | 12,348 |  |
Plans with projected benefit obligation in excess of plan assets |  |  |  |
Projected benefit obligation | 8,362 | 13,498 |  |
Fair value of plan assets | 7,498 | 12,348 |  |
International | U.S. Pension Plans |  |  |  |
Change in benefit obligation |  |  |  |
Benefit obligation at beginning of year | 5,571 | 5,072 |  |
Transfers to Solventum | (615) | 0 |  |
Service cost | 63 | 76 | 128 |
Interest cost | 200 | 225 | 125 |
Participant contributions | 7 | 9 |  |
Foreign exchange rate changes | (284) | 208 |  |
Plan amendments | 0 | (1) |  |
Actuarial (gain) loss | (198) | 298 |  |
Benefit payments | (249) | (258) |  |
Settlements, curtailments, special termination benefits and other | (59) | (58) |  |
Benefit obligation at end of year | 4,436 | 5,571 | 5,072 |
Less: discontinued operations | 0 | (620) |  |
Benefit obligation - continuing operations | 4,436 | 4,951 |  |
Change in plan assets |  |  |  |
Fair value of plan assets at beginning of year | 6,341 | 5,891 |  |
Transfers to Solventum | (455) | 0 |  |
Actual return on plan assets | 38 | 426 |  |
Company contributions | 71 | 82 |  |
Participant contributions | 7 | 9 |  |
Foreign exchange rate changes | (299) | 241 |  |
Benefit payments | (249) | (258) |  |
Settlements, curtailments, special termination benefits and other | (57) | (50) |  |
Fair value of plan assets at end of year | 5,397 | 6,341 | $ 5,891 |
Less: discontinued operations | 0 | (484) |  |
Fair value of plan assets - continuing operations | 5,397 | 5,857 |  |
Funded status at end of year - continuing operations | 961 | 906 |  |
​Amounts recognized in the Consolidated Balance Sheet as of December 31, (Millions) |  |  |  |
Non-current assets | 1,243 | 1,239 |  |
Accrued benefit cost |  |  |  |
Current liabilities | (13) | (11) |  |
Non-current liabilities | (269) | (322) |  |
Ending balance - continuing operations | 961 | 906 |  |
Ending balance - discontinued operations | 0 | (136) |  |
Amounts recognized in accumulated other comprehensive income as of December 31, (Millions) |  |  |  |
Net transition obligation (asset) | 0 | 3 |  |
Net actuarial loss (gain) | 347 | 316 |  |
Prior service cost (credit) | 7 | 9 |  |
Ending balance | 354 | 328 |  |
Accumulated benefit obligation | 4,289 | 5,275 |  |
Plans with accumulated benefit obligation in excess of plan assets |  |  |  |
Accumulated benefit obligation | 655 | 1,145 |  |
Fair value of plan assets | 405 | 761 |  |
Plans with projected benefit obligation in excess of plan assets |  |  |  |
Projected benefit obligation | 695 | 1,272 |  |
Fair value of plan assets | $ 416 | $ 793 |  |

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