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Pension and Other Postretirement Healthcare Benefits, Components of Net Periodic Pension and Postretirement Healthcare Cost (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Pensions      
Net periodic cost:      
Service cost $ 5 $ 4 $ 5
Interest cost 14 14 17
Expected return on plan assets (24) (26) (22)
Net amortization of actuarial loss 4 5 4
Settlement losses (gains) 20 0 0
Curtailment (gains) 0 0 (2)
Total net periodic cost 19 (3) 2
Other Post Retirement Benefit Plans      
Net periodic cost:      
Service cost 0 1 0
Interest cost 2 2 1
Expected return on plan assets 0 0 0
Net amortization of actuarial loss 0 1 0
Settlement losses (gains) 0 0 0
Curtailment (gains) 0 0 0
Total net periodic cost $ 2 $ 4 $ 1