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, 2021	Dec. 31, 2020	Dec. 31, 2019
Change in benefit obligation:
Interest cost	$ (16)	$ (19)	$ (22)
Amounts recorded on the consolidated balance sheets:
Pension and retirement benefits asset – non current	77	21
Pension and retirement benefits liability – current	(7)	(45)
Pension and retirement benefits liability – non current	(235)	(244)
U.S. Plans | Pension Plans
Change in benefit obligation:
Benefit obligation, beginning of the period	(663)	(589)
Service cost	(19)	(17)	(17)
Interest cost	(14)	(17)	(21)
Plan participants’ contributions	0	0
Benefits paid	68	22
Actuarial (loss) gain	(6)	6
Assumption changes	64	(68)
Benefit obligation, end of the period	(570)	(663)	(589)
Change in plan assets:
Fair value of plan assets, beginning of the period	528	395
Actual return on plan assets	34	45
Benefits paid	(68)	(22)
Employer contributions	50	110
Plan participants’ contributions	0	0
Fair value of plan assets, end of the period	544	528	395
Funded Status of the plans	(26)	(135)
Amounts recorded on the consolidated balance sheets:
Pension and retirement benefits asset – non current	74	21
Pension and retirement benefits liability – current	(5)	(44)
Pension and retirement benefits liability – non current	(95)	(112)
Net amount recognized	(26)	(135)
Accumulated benefit obligation, end of the period	(524)	(601)
U.S. Plans | Other Retirement Plans
Change in benefit obligation:
Benefit obligation, beginning of the period	(48)	(42)
Service cost	(4)	(3)	(3)
Interest cost	(1)	(1)	(1)
Plan participants’ contributions	(1)	(1)
Benefits paid	2	2
Actuarial (loss) gain	(3)	2
Assumption changes	7	(5)
Benefit obligation, end of the period	(48)	(48)	(42)
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	(48)	(48)
Amounts recorded on the consolidated balance sheets:
Pension and retirement benefits asset – non current	0	0
Pension and retirement benefits liability – current	(1)	(1)
Pension and retirement benefits liability – non current	(47)	(47)
Net amount recognized	$ (48)	$ (48)