Postretirement Benefits - Summary Of Company Costs Related To U.S. And Non-U.S. Defined Contribution Plans (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Defined Contribution Plan | ||||
| Costs related to defined contribution plans | $ 120 | $ 220 | $ 684 | $ 632 |
| U.S. Plans | ||||
| Defined Contribution Plan | ||||
| Costs related to defined contribution plans | 82 | 185 | 571 | 529 |
| Non-U.S. Plans | ||||
| Defined Contribution Plan | ||||
| Costs related to defined contribution plans | $ 38 | $ 35 | $ 113 | $ 103 |