Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Activity for unrecognized tax benefits [Roll Forward]
Balance at beginning of period	$ 72	$ 73	$ 29
Tax positions related to current year additions	1	2	43
Additions for tax positions of prior years	4	1	1
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions	0	(4)	0
Reductions due to lapse of statute of limitations on tax positions	(10)	0	0
Balance at end of period	$ 67	$ 72	$ 73