Income Taxes - Components of Income Tax Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Current tax expense (benefit):
Federal	$ 1	$ 2	$ (6)
Foreign	9	4	1
State	5	5	(3)
Total current tax expense (benefit)	15	11	(8)
Deferred tax expense (benefit):
Federal	38	(50)	8
State	4	(12)	(5)
Total deferred tax expense (benefit)	42	(62)	3
Total income tax expense (benefit)	$ 57	$ (51)	$ (5)