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Employee Retirement Benefits - Schedule of Reconciliation of Benefit Obligations and Plan Assets (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Pension      
Change in Projected Benefit Obligations      
Benefit obligations at beginning of year $ 137 $ 134  
Interest cost 7 7 $ 5
Plan settlements (7) 0  
Benefits paid 0 (7)  
Actuarial (gain) loss (4) 3  
Benefit obligations at end of year 133 137 134
Change in Fair Value of Plan Assets      
Fair value of plan assets at beginning of year 119 113  
Actual return on plan assets 2 9  
Employer contribution 4 4 0
Plan settlements (7) 0  
Benefits paid 0 (7)  
Fair value of plan assets at end of year 118 119 113
Funded Status (15) (18)  
Accumulated benefit obligations 133 137  
Postretirement      
Change in Projected Benefit Obligations      
Benefit obligations at beginning of year 1 1  
Interest cost 0 0  
Plan settlements 0 0  
Benefits paid 0 0  
Actuarial (gain) loss 0 0  
Benefit obligations at end of year 1 1 1
Change in Fair Value of Plan Assets      
Fair value of plan assets at beginning of year 0 0  
Actual return on plan assets 0 0  
Employer contribution 0 0  
Plan settlements 0 0  
Benefits paid 0 0  
Fair value of plan assets at end of year 0 0 $ 0
Funded Status $ (1) $ (1)