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Pensions and Other Postretirement Benefits (Additional Information) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2021
Pension |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total | $ (8) | $ 9 | $ (27) | $ 29 |
Other Postretirement Benefits |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total | (3) | (3) | (7) | (10) |
Foreign Plan | Minimum [Member] |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |
Expected employer mandatory contributions | 5 |  | 5 |  |
Foreign Plan | Maximum [Member] |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |
Expected employer mandatory contributions | 10 |  | 10 |  |
Mandatory Contribution | Foreign Plan |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |
Contributions to defined benefit pension plans | $ 1 | $ 2 | $ 3 | $ 7 |
Scenario, Forecast |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total |  |  |  |  | $ 45
Scenario, Forecast | Pension |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total |  |  |  |  | 35
Scenario, Forecast | Other Postretirement Benefits |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total |  |  |  |  | $ 10

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