Income Taxes - Reconciliation of Beginning and Ending Amount of Gross Unrecognized Tax Benefits, Excluding Interest and Penalties (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Balance at beginning of year	$ 43	$ 47	$ 44
Increases for tax positions taken during prior years	35	0	1
Increases for tax positions taken during the current year	9	2	6
Reductions related to expiration of statutes of limitations and audit settlements	(4)	(6)	(4)
Balance at end of year	$ 83	$ 43	$ 47