Income Taxes - Components of Income (Loss) Before Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
United States - Income (Loss) Before Income Taxes	$ 143	$ (1,509)	$ (338)
Foreign - Income (Loss) Before Income Taxes	1,347	(1,341)	559
Income (Loss) Before Income Taxes	$ 1,490	$ (2,850)	$ 221