Federal, State, and Local Taxes - Reconciliation of Gross Amounts of Tax Contingencies (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Unrecognized Tax Benefits [Roll Forward]
Uncertain tax positions at beginning of year	$ 42	$ 40	$ 39
Additions for tax positions relating to current-year operations	1	1	1
Additions for tax positions relating to prior tax years	0	2	0
Subtractions for tax positions relating to prior tax years	0	(1)	0
Uncertain tax positions at end of year	$ 43	$ 42	$ 40