Income Taxes - Schedule of Reconciliation of Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Reconciliation of Unrecognized Tax Benefits
Balance at beginning of year	$ 7	$ 7
Additions for tax positions related to the current year	11	0
Additions for tax positions related to prior years	0	3
Settlements for tax positions	0	(2)
Lapse of statutes	(1)	(1)
Balance at end of year	$ 17	$ 7