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, 2023	Dec. 31, 2022	Dec. 31, 2021
Change in benefit obligation:
Interest cost	$ (26)	$ (17)	$ (16)
Amounts recorded on the consolidated balance sheets:
Pension and retirement benefits asset – non current	41	40
Pension and retirement benefits liability – current	(15)	(7)
Pension and retirement benefits liability – non current	(190)	(189)
U.S. | Pension Plans
Change in benefit obligation:
Benefit obligation, beginning of the period	(462)	(570)
Service cost	(11)	(14)	(19)
Interest cost	(22)	(15)	(14)
Plan participants’ contributions	0	0
Benefits paid	30	20
Actuarial (loss) gain	(4)	1
Assumption changes	(15)	116
Benefit obligation, end of the period	(484)	(462)	(570)
Change in plan assets:
Fair value of plan assets, beginning of the period	420	544
Actual return on plan assets	48	(111)
Benefits paid	(30)	(20)
Employer contributions	11	7
Plan participants’ contributions	0	0
Fair value of plan assets, end of the period	449	420	544
Funded status of the plans	(35)	(42)
Amounts recorded on the consolidated balance sheets:
Pension and retirement benefits asset – non current	40	39
Pension and retirement benefits liability – current	(13)	(5)
Pension and retirement benefits liability – non current	(62)	(76)
Net amount recognized	(35)	(42)
Accumulated benefit obligation, end of the period	(453)	(432)
U.S. | Other Retirement Plans
Change in benefit obligation:
Benefit obligation, beginning of the period	(39)	(48)
Service cost	(3)	(4)	(4)
Interest cost	(2)	(1)	(1)
Plan participants’ contributions	(1)	(1)
Benefits paid	2	2
Actuarial (loss) gain	2	0
Assumption changes	(1)	13
Benefit obligation, end of the period	(42)	(39)	(48)
Change in plan assets:
Fair value of plan assets, beginning of the period	0	0
Actual return on plan assets	0	0
Benefits paid	(2)	(2)
Employer contributions	1	1
Plan participants’ contributions	1	1
Fair value of plan assets, end of the period	0	0	$ 0
Funded status of the plans	(42)	(39)
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)	(37)
Net amount recognized	$ (42)	$ (39)