Restructuring Costs - Schedule of Accrued Restructuring Costs Activity (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Restructuring Reserve [Roll Forward]
Beginning balance	$ 10
Restructuring costs, net	5	$ 5
Payments	(7)
Ending balance	8
Severance and termination costs
Restructuring Reserve [Roll Forward]
Beginning balance	8
Restructuring costs, net	4
Payments	(5)
Ending balance	7
Contract termination and other costs
Restructuring Reserve [Roll Forward]
Beginning balance	2
Restructuring costs, net	1
Payments	(2)
Ending balance	$ 1