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Pensions Benefit Plans and Other Postretirement Benefits - U.S. Plan Assets By Hierarchy (Details) - Pension Benefit Plans. - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | ---
Minimum |  |  |
Defined Benefit Plan Disclosure |  |  |
Percentage of pension plan assets | 10.00% |  |
U.S. |  |  |
Defined Benefit Plan Disclosure |  |  |
Plan assets at fair value | $ 837 | $ 812 | $ 1,168
Non-U.S. |  |  |
Defined Benefit Plan Disclosure |  |  |
Plan assets at fair value | 564 | 547 | $ 923
Cash and cash equivalents | Non-U.S. |  |  |
Defined Benefit Plan Disclosure |  |  |
Plan assets at fair value | $ 18 | 9 |
Equity securities | U.S. |  |  |
Defined Benefit Plan Disclosure |  |  |
Percentage of pension plan assets | 35.00% |  |
Equity securities | Non-U.S. |  |  |
Defined Benefit Plan Disclosure |  |  |
Percentage of pension plan assets | 5.00% |  |
Debt securities | U.S. |  |  |
Defined Benefit Plan Disclosure |  |  |
Percentage of pension plan assets | 64.00% |  |
Debt securities | Non-U.S. |  |  |
Defined Benefit Plan Disclosure |  |  |
Plan assets at fair value | $ 22 | 29 |
Percentage of pension plan assets | 86.00% |  |
Real estate and other | U.S. |  |  |
Defined Benefit Plan Disclosure |  |  |
Percentage of pension plan assets | 1.00% |  |
Diversified funds and other | Non-U.S. |  |  |
Defined Benefit Plan Disclosure |  |  |
Plan assets at fair value | $ 23 | 21 |
Percentage of pension plan assets | 9.00% |  |
Level 1 | Non-U.S. |  |  |
Defined Benefit Plan Disclosure |  |  |
Plan assets at fair value | $ 63 | 59 |
Level 1 | Cash and cash equivalents | Non-U.S. |  |  |
Defined Benefit Plan Disclosure |  |  |
Plan assets at fair value | 18 | 9 |
Level 1 | Debt securities | Non-U.S. |  |  |
Defined Benefit Plan Disclosure |  |  |
Plan assets at fair value | 22 | 29 |
Level 1 | Diversified funds and other | Non-U.S. |  |  |
Defined Benefit Plan Disclosure |  |  |
Plan assets at fair value | 23 | 21 |
Fair Value Measured at Net Asset Value | Non-U.S. |  |  |
Defined Benefit Plan Disclosure |  |  |
Plan assets at fair value | $ 501 | $ 488 |

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