Unrealized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Jan. 01, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Unrecognized tax benefit — Permanent tax positions	$ 5	$ 5
Reductions for tax positions of prior years	(1)	(5)	$ 0
Tax credit carryforwards	(4)	(4)
Payable for interest related to unrecognized tax benefits	0	0	0		$ (1)
Unrecognized Tax Benefits, Interest on Income Taxes Expense	0	0	1
Unrecognized Tax Benefits, Income Tax Penalties Expense	0	0	0
Additions based on tax positions related to the current year	1	1	1
Unrecognized tax benefit — Temporary tax positions	0	0
Balance at Dec. 31	5	$ 5	$ 9	$ 8
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	$ 5