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Pension and Other Postretirement Benefits - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2025 | Sep. 30, 2025
Retirement Benefits [Abstract] |  |
Proceeds from repayment of pension contributions |  | $ 24
Pension Plan | Non U.S. |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Amount of irrevocable transfer | $ 120 |
Settlement charge | 48 |
Pension Plan | U.S. |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Amount of irrevocable transfer | 740 |
Settlement charge | $ 469 |

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