Income Taxes (Schedule of Income Tax Expense (Benefit)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Federal:
Current	$ 236	$ 230	$ 153
Deferred	(38)	27	(47)
Total Federal	198	257	106
State:
Current	52	55	38
Deferred	(5)	5	(11)
Total State	47	60	27
Total income tax expense	$ 245	$ 317	$ 133