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Pension and Other Postretirement Benefits - Pension Plan Assets by Category and FV (Details) - Pension Plan - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
U.S. Plans |  |  |
Benefit plans |  |  |
Fair value of plan assets | $ 315 | $ 325 | $ 317
U.S. Plans | U.S. |  |  |
Benefit plans |  |  |
Fair value of plan assets | 14 | 24 |
U.S. Plans | International |  |  |
Benefit plans |  |  |
Fair value of plan assets | 7 | 16 |
U.S. Plans | Long bond |  |  |
Benefit plans |  |  |
Fair value of plan assets | $ 125 | $ 133 |
Fixed income securities maturity (minimum) | 10 years | 10 years |
U.S. Plans | Government bond |  |  |
Benefit plans |  |  |
Fair value of plan assets | $ 100 | $ 89 |
U.S. Plans | Other |  |  |
Benefit plans |  |  |
Fair value of plan assets | $ 63 | 57 |
Redemption notification period | 95 days |  |
U.S. Plans | Cash & Short-term Investments |  |  |
Benefit plans |  |  |
Fair value of plan assets | $ 6 | 6 |
U.S. Plans | NAV |  |  |
Benefit plans |  |  |
Fair value of plan assets | 63 | 57 |
U.S. Plans | NAV | U.S. |  |  |
Benefit plans |  |  |
Fair value of plan assets | 0 | 0 |
U.S. Plans | NAV | International |  |  |
Benefit plans |  |  |
Fair value of plan assets | 0 | 0 |
U.S. Plans | NAV | Long bond |  |  |
Benefit plans |  |  |
Fair value of plan assets | 0 | 0 |
U.S. Plans | NAV | Government bond |  |  |
Benefit plans |  |  |
Fair value of plan assets | 0 | 0 |
U.S. Plans | NAV | Other |  |  |
Benefit plans |  |  |
Fair value of plan assets | 63 | 57 |
U.S. Plans | NAV | Cash & Short-term Investments |  |  |
Benefit plans |  |  |
Fair value of plan assets | 0 | 0 |
U.S. Plans | Level 1 |  |  |
Benefit plans |  |  |
Fair value of plan assets | 0 | 0 |
U.S. Plans | Level 1 | U.S. |  |  |
Benefit plans |  |  |
Fair value of plan assets | 0 | 0 |
U.S. Plans | Level 1 | International |  |  |
Benefit plans |  |  |
Fair value of plan assets | 0 | 0 |
U.S. Plans | Level 1 | Long bond |  |  |
Benefit plans |  |  |
Fair value of plan assets | 0 | 0 |
U.S. Plans | Level 1 | Government bond |  |  |
Benefit plans |  |  |
Fair value of plan assets | 0 | 0 |
U.S. Plans | Level 1 | Other |  |  |
Benefit plans |  |  |
Fair value of plan assets | 0 | 0 |
U.S. Plans | Level 1 | Cash & Short-term Investments |  |  |
Benefit plans |  |  |
Fair value of plan assets | 0 | 0 |
U.S. Plans | Level 2 |  |  |
Benefit plans |  |  |
Fair value of plan assets | 252 | 268 |
U.S. Plans | Level 2 | U.S. |  |  |
Benefit plans |  |  |
Fair value of plan assets | 14 | 24 |
U.S. Plans | Level 2 | International |  |  |
Benefit plans |  |  |
Fair value of plan assets | 7 | 16 |
U.S. Plans | Level 2 | Long bond |  |  |
Benefit plans |  |  |
Fair value of plan assets | 125 | 133 |
U.S. Plans | Level 2 | Government bond |  |  |
Benefit plans |  |  |
Fair value of plan assets | 100 | 89 |
U.S. Plans | Level 2 | Other |  |  |
Benefit plans |  |  |
Fair value of plan assets | 0 | 0 |
U.S. Plans | Level 2 | Cash & Short-term Investments |  |  |
Benefit plans |  |  |
Fair value of plan assets | 6 | 6 |
Non-U.S. Plans |  |  |
Benefit plans |  |  |
Fair value of plan assets | 174 | 200 | $ 189
Non-U.S. Plans | U.S. |  |  |
Benefit plans |  |  |
Fair value of plan assets | 10 | 10 |
Non-U.S. Plans | International |  |  |
Benefit plans |  |  |
Fair value of plan assets | 5 | 6 |
Non-U.S. Plans | Government bond |  |  |
Benefit plans |  |  |
Fair value of plan assets | 73 | 78 |
Non-U.S. Plans | Corporate bond |  |  |
Benefit plans |  |  |
Fair value of plan assets | 74 | 79 |
Non-U.S. Plans | Other |  |  |
Benefit plans |  |  |
Fair value of plan assets | 10 | 25 |
Non-U.S. Plans | Cash & Short-term Investments |  |  |
Benefit plans |  |  |
Fair value of plan assets | 2 | 2 |
Non-U.S. Plans | NAV |  |  |
Benefit plans |  |  |
Fair value of plan assets | 0 | 0 |
Non-U.S. Plans | NAV | U.S. |  |  |
Benefit plans |  |  |
Fair value of plan assets | 0 | 0 |
Non-U.S. Plans | NAV | International |  |  |
Benefit plans |  |  |
Fair value of plan assets | 0 | 0 |
Non-U.S. Plans | NAV | Government bond |  |  |
Benefit plans |  |  |
Fair value of plan assets | 0 | 0 |
Non-U.S. Plans | NAV | Corporate bond |  |  |
Benefit plans |  |  |
Fair value of plan assets | 0 | 0 |
Non-U.S. Plans | NAV | Other |  |  |
Benefit plans |  |  |
Fair value of plan assets | 0 | 0 |
Non-U.S. Plans | NAV | Cash & Short-term Investments |  |  |
Benefit plans |  |  |
Fair value of plan assets | 0 | 0 |
Non-U.S. Plans | Level 1 |  |  |
Benefit plans |  |  |
Fair value of plan assets | 2 | 2 |
Non-U.S. Plans | Level 1 | U.S. |  |  |
Benefit plans |  |  |
Fair value of plan assets | 0 | 0 |
Non-U.S. Plans | Level 1 | International |  |  |
Benefit plans |  |  |
Fair value of plan assets | 0 | 0 |
Non-U.S. Plans | Level 1 | Government bond |  |  |
Benefit plans |  |  |
Fair value of plan assets | 0 | 0 |
Non-U.S. Plans | Level 1 | Corporate bond |  |  |
Benefit plans |  |  |
Fair value of plan assets | 0 | 0 |
Non-U.S. Plans | Level 1 | Other |  |  |
Benefit plans |  |  |
Fair value of plan assets | 0 | 0 |
Non-U.S. Plans | Level 1 | Cash & Short-term Investments |  |  |
Benefit plans |  |  |
Fair value of plan assets | 2 | 2 |
Non-U.S. Plans | Level 2 |  |  |
Benefit plans |  |  |
Fair value of plan assets | 172 | 198 |
Non-U.S. Plans | Level 2 | U.S. |  |  |
Benefit plans |  |  |
Fair value of plan assets | 10 | 10 |
Non-U.S. Plans | Level 2 | International |  |  |
Benefit plans |  |  |
Fair value of plan assets | 5 | 6 |
Non-U.S. Plans | Level 2 | Government bond |  |  |
Benefit plans |  |  |
Fair value of plan assets | 73 | 78 |
Non-U.S. Plans | Level 2 | Corporate bond |  |  |
Benefit plans |  |  |
Fair value of plan assets | 74 | 79 |
Non-U.S. Plans | Level 2 | Other |  |  |
Benefit plans |  |  |
Fair value of plan assets | 10 | 25 |
Non-U.S. Plans | Level 2 | Cash & Short-term Investments |  |  |
Benefit plans |  |  |
Fair value of plan assets | $ 0 | $ 0 |

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