Income Taxes (Schedule of Components of Income Tax Expense (Benefit)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Current income tax expense
U.S. federal	$ 85	$ 1	$ 502
Foreign	5	3	4
State and local	36	9	168
Total current expense	126	13	674
Deferred income tax (benefit) expense
U.S. federal	(57)	493	151
Foreign	(1)	(1)	0
State and local	(7)	61	(35)
Total deferred (benefit) expense	(65)	553	116
Other tax expense	0	61	0
Total income tax expense from continuing operations	$ 61	$ 627	$ 790