Income Taxes - Unrecognized Tax Benefits (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Taxes
Balance beginning	$ 64	$ 37	$ 40
Additions based on tax positions related to the current year	5	22	5
Additions based on tax positions of prior years		18
Accrued interest	1	3	2
Settlements		(12)
Lapse of statute of limitations	(6)	(4)	(10)
Balance ending	64	$ 64	$ 37
Net unrecognized tax benefits that would impact effective tax rate	$ 53