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Pensions Benefit Plans and Other Postretirement Benefits - Projected and Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets (Details) - Pension Benefit Plans - Funded Plan - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
U.S. |  |
Projected Benefit Obligation Exceeds the Fair Value of Plan Assets |  |
Projected benefit obligations | $ 1,242 | $ 1,590
Accumulated benefit obligation | 1,242 | 1,590
Fair value of plan assets | 1,168 | 1,324
Accumulated Benefit Obligations Exceeds the Fair Value of Plan Assets |  |
Projected benefit obligations | 1,242 | 1,590
Accumulated benefit obligation | 1,242 | 1,590
Fair value of plan assets | 1,168 | 1,324
Non-U.S. Pension Plans |  |
Projected Benefit Obligation Exceeds the Fair Value of Plan Assets |  |
Projected benefit obligations | 258 | 331
Accumulated benefit obligation | 240 | 309
Fair value of plan assets | 42 | 67
Accumulated Benefit Obligations Exceeds the Fair Value of Plan Assets |  |
Projected benefit obligations | 258 | 331
Accumulated benefit obligation | 240 | 309
Fair value of plan assets | $ 42 | $ 67

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