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Pension and Other Postretirement Employee Benefit Plans (Components of Net Periodic Pension and Postretirement Benefit (Cost)) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Pension benefit plans | U.S. Pension Benefits    
Defined Benefit Plan Disclosure [Line Items]    
Service cost $ 0 $ 0
Interest cost (54) (44)
Expected return on plan assets 130 123
Amortization of prior service (cost) credit (1) (1)
Amortization of net loss (35) (46)
Curtailment and settlement gains (losses) recognized 0 0
Net periodic pension benefit (cost) 40 32
Pension benefit plans | Foreign Plan    
Defined Benefit Plan Disclosure [Line Items]    
Service cost (39) (44)
Interest cost (23) (19)
Expected return on plan assets 37 42
Amortization of prior service (cost) credit 2 1
Amortization of net loss (2) (11)
Curtailment and settlement gains (losses) recognized (7) (1)
Net periodic pension benefit (cost) (32) (32)
Other postretirement benefits    
Defined Benefit Plan Disclosure [Line Items]    
Service cost 0 0
Interest cost (3) (2)
Expected return on plan assets 0 0
Amortization of prior service (cost) credit 2 2
Amortization of net loss (1) (2)
Curtailment and settlement gains (losses) recognized 0 0
Net periodic pension benefit (cost) $ (2) $ (2)