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Employee Benefit Plans - Schedule of Components of Net Periodic Benefit Cost (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Other Benefits    
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]    
Service cost $ 0 $ 0
Interest cost 1 1
Expected return on plan assets
Amortization of prior service credit (9) (10)
Recognized net actuarial loss (1) 0
Settlements
Net periodic benefit cost (9) (9)
United States | Pension Benefits    
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]    
Service cost 13 16
Interest cost 19 12
Expected return on plan assets (15) (13)
Amortization of prior service credit 0 0
Recognized net actuarial loss 3 6
Settlements 4 4
Net periodic benefit cost 24 25
Int'l. | Pension Benefits    
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]    
Service cost 10 13
Interest cost 28 21
Expected return on plan assets (37) (34)
Amortization of prior service credit 0 0
Recognized net actuarial loss 17 2
Settlements 0 0
Net periodic benefit cost $ 18 $ 2