Income Taxes - Provision for (Benefit from) Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current
Federal	$ 0	$ (5)	$ (3)
State	35	21	41
Foreign	12	29	50
Current income tax provision	47	45	88
Deferred
Federal	309	(104)	41
State	78	(90)	(37)
Foreign	(9)	(123)	(107)
Deferred income tax provision (benefit)	378	(317)	(103)
Provision for (benefit from) income taxes	$ 425	$ (272)	$ (15)