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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