Shares and Stockholders' Equity (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Deferred compensation plan mark to market adjustment	$ (2)	$ 7	$ 2	$ 7
Preferred stock shares issued	40,000		40,000		40,000
9.250% Fixed Rate Reset Non-Cumulative Preferred Stock, Series C [Member]
Preferred stock shares issued	20,000		20,000		20,000
9.000% Non-Cumulative Preferred Stock, Series D [Member]
Preferred stock shares issued	20,000		20,000		20,000