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Pension Benefit Plans and Other Postretirement Benefits - Changes in Plan Assets and Benefit Obligations Recognized in AOCI (Details) - Funded Plan - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Pension Benefit Plans | U.S.    
Changes in plan assets and benefit obligations were recognized in accumulated other comprehensive income    
Current year actuarial (gain) loss $ (136) $ 57
Amortization of actuarial loss (62) (56)
Settlement (73) (14)
Total (271) (13)
Change in accumulated other comprehensive loss (271) (13)
Pension Benefit Plans | Non-U.S. Pension Plans    
Changes in plan assets and benefit obligations were recognized in accumulated other comprehensive income    
Current year actuarial (gain) loss (13) 12
Amortization of actuarial loss (43) (12)
Settlement (1) (12)
Other adjustments (1) 2
Total (58) (10)
Translation (7) 12
Change in accumulated other comprehensive loss (65) 2
Postretirement Benefits Other Than Pensions | U.S.    
Changes in plan assets and benefit obligations were recognized in accumulated other comprehensive income    
Current year actuarial (gain) loss (4) 14
Amortization of actuarial loss (9) (5)
Amortization of prior service credit 9 12
Other adjustments   (39)
Total (4) (18)
Postretirement Benefits Other Than Pensions | Non-U.S. Pension Plans    
Changes in plan assets and benefit obligations were recognized in accumulated other comprehensive income    
Current year actuarial (gain) loss (6) 5
Total $ (6) $ 5