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Changes in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Changes in Accumulated Other Comprehensive Loss |  |  |
Accumulated other comprehensive loss, Translation Adjustments, Net of Tax, Beginning Balance | $ (45) |  |
Accumulated other comprehensive loss, Post-Retirement Benefits, Net of Tax, Beginning Balance | (25) |  |
Accumulated other comprehensive loss, Beginning Balance | (70) |  |
Other comprehensive income before reclassifications, net of tax Translation Adjustments, Net of Tax | 12 |  |
Other comprehensive income before reclassifications, net of tax Post-Retirement Benefits and Other,Net of Tax | 3 |  |
Other comprehensive income before reclassifications, net of tax Total | 15 |  |
Reclassifications from accumulated other comprehensive loss to earnings, net of tax Translation Adjustments, Net of Tax | 0 |  |
Reclassifications from accumulated other comprehensive loss to earnings, net of tax Post-Retirement Benefits and Other, Net of Tax | 0 |  |
Reclassifications from accumulated other comprehensive loss to earnings, net of tax | 0 |  |
Other comprehensive income, net of tax, Translation Adjustment, Net of Tax, Total | 12 | $ (7) | $ (7)
Post-Retirement Benefits and Other, Net of Tax | 3 | 11 | 13
Other comprehensive income, net of tax | 15 | 4 | $ 6
Accumulated other comprehensive loss, Translation Adjustments, Net of Tax, Ending Balance | (33) | (45) |
Accumulated other comprehensive loss, Post-Retirement Benefits and Other, Net of Tax, Ending Balance | (22) | (25) |
Accumulated other comprehensive loss, Total, Ending Balance | $ (55) | $ (70) |

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