Income Taxes - Components of Income Tax Expense from Continuing Operations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Current:
Federal	$ (1)	$ 0	$ (10)
State and local	1	0	0
Current income tax expense (benefit)	0	0	(10)
Deferred:
Federal	41	(7)	(32)
State and local	2	(1)	(1)
Foreign	0	0	1
Deferred income taxes	43	(8)	(32)
Total income tax expense (benefit)	$ 43	$ (8)	$ (42)