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Pension And Other Retirement Benefits - Summary of Changes in Benefit Obligations and Fair Value of Plan Assets for Post-Retirement Plans (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Change in benefit obligation:      
Interest cost $ (26) $ (26) $ (17)
Amounts recorded on the consolidated balance sheets:      
Pension and retirement benefits asset – non current 60 41  
Pension and retirement benefits liability – current (11) (15)  
Pension and retirement benefits liability – non current (195) (190)  
U.S. | Pension Plans      
Change in benefit obligation:      
Benefit obligation, beginning of the period (484) (462)  
Service cost (10) (11) (14)
Interest cost (22) (22) (15)
Plan participants’ contributions 0 0  
Benefits paid 24 30  
Actuarial (loss) gain 0 (4)  
Assumption changes 28 (15)  
Benefit obligation, end of the period (464) (484) (462)
Change in plan assets:      
Fair value of plan assets, beginning of the period 449 420  
Actual return on plan assets 24 48  
Benefits paid (24) (30)  
Employer contributions 11 11  
Plan participants’ contributions 0 0  
Fair value of plan assets, end of the period 460 449 420
Funded status of the plans (4) (35)  
Amounts recorded on the consolidated balance sheets:      
Pension and retirement benefits asset – non current 60 40  
Pension and retirement benefits liability – current (8) (13)  
Pension and retirement benefits liability – non current (56) (62)  
Net amount recognized (4) (35)  
Accumulated benefit obligation, end of the period (436) (453)  
U.S. | Other Retirement Plans      
Change in benefit obligation:      
Benefit obligation, beginning of the period (42) (39)  
Service cost (3) (3) (4)
Interest cost (2) (2) (1)
Plan participants’ contributions (2) (1)  
Benefits paid 3 2  
Actuarial (loss) gain 0 2  
Assumption changes 4 (1)  
Benefit obligation, end of the period (42) (42) (39)
Change in plan assets:      
Fair value of plan assets, beginning of the period 0 0  
Actual return on plan assets 0 0  
Benefits paid (3) (2)  
Employer contributions 1 1  
Plan participants’ contributions 2 1  
Fair value of plan assets, end of the period 0 0 $ 0
Funded status of the plans (42) (42)  
Amounts recorded on the consolidated balance sheets:      
Pension and retirement benefits asset – non current 0 0  
Pension and retirement benefits liability – current (2) (2)  
Pension and retirement benefits liability – non current (40) (40)  
Net amount recognized $ (42) $ (42)