Income Taxes - Provision (Benefit) for Income Taxes from Continuing Operations (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Current Federal	$ 3	$ 1	$ (57)
Current State	2	1	1
Current Foreign	1	0	1
Current Income Tax Expense (Benefit), Total	6	2	(55)
Deferred Federal	13	(66)	(96)
Deferred State	5	(24)	(63)
Deferred Foreign	2	(3)	(6)
Deferred income taxes	20	(93)	(165)
Total	$ 26	$ (91)	$ (220)