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Pension and Other Benefit Programs - Benefit Obligations and Fair Value of Plan Assets (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Change in benefit obligation:      
Benefit obligation at beginning of year $ 644 $ 647  
Interest cost 29 30 $ 17
Actuarial (gain)/loss (28) 14  
Benefits paid (47) (47)  
Benefit obligation at year end 598 644 647
Change in plan assets:      
Fair value of plan assets at beginning of year 694 687  
Actual return on plan assets 6 54  
Benefits paid (47) (47)  
Fair value of plan assets at end of year 653 694 $ 687
Funded status 55 50  
Accumulated benefit obligation 598 644  
Amounts recognized in the accompanying consolidated balance sheets:      
Accrued employee benefits (170) (193)  
Other non-current assets      
Amounts recognized in the accompanying consolidated balance sheets:      
Other non-current assets $ 55 $ 50