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Retirement and Benefit Plans - Defined Benefit Retirement Plans with Overfunded and Underfunded Status (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]      
Fair value of plan assets at January 1 $ 109    
Fair value of plan assets at December 31 102 $ 109  
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Interest cost 6 5 $ 4
Underfunded defined benefit pension plans      
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]      
Fair value of plan assets at January 1 109 152  
Actual return on assets 5 (27)  
Contributions 2 2  
Settlement (7) (11)  
Benefits paid (7) (7)  
Fair value of plan assets at December 31 102 109 152
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Projected benefit obligation at January 1 120 176  
Interest cost 6 5  
Settlement (7) (11)  
Actuarial loss (gain) 1 (43)  
Benefits paid (7) (7)  
Projected benefit obligation at December 31 113 120 $ 176
Underfunded projected benefit obligation at December 31 (11) (11)  
Accumulated benefit obligation at December 31 $ 113 $ 120