Income Taxes - Schedule of Income Tax Provision (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Current portion of income tax provision:
Federal	$ (1)	$ (1)	$ (2)	$ (1)
State	(3)	(9)	(26)	(31)
Total current portion	(4)	(10)	(28)	(32)
Deferred portion of income tax provision:
Federal	(4)	(4)	(12)	(12)
State	21	(4)	13	(10)
Foreign	0	(1)	0	(1)
Total deferred portion	17	(9)	1	(23)
Total benefit from (provision for) income taxes	$ 13	$ (19)	$ (27)	$ (55)