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Pension And Other Postretirement Employee Benefit Plans (PBO) (Details) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
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Pension benefit plans | U.S. Pension Benefits |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Projected benefit obligation | $ 2,532 | $ 2,718
Fair value of plan assets | 2,303 | 2,125
Pension benefit plans | Non-U.S. Pension Benefits |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Projected benefit obligation | 1,125 | 1,366
Fair value of plan assets | 357 | 441
Other postretirement benefits |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Projected benefit obligation | 135 | 148
Fair value of plan assets | $ 0 | $ 0

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