Income Taxes (Schedule of Components of Income Tax Expense (Benefit)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current income tax expense (benefit)
U.S. federal	$ 502	$ 0	$ (2)
Foreign	4	6	4
State and local	168	80	65
Total current expense	674	86	67
Deferred income tax expense (benefit)
U.S. federal	151	280	178
Foreign	0	1	2
State and local	(35)	(39)	(1)
Total deferred expense	116	242	179
Total income tax expense from continuing operations	$ 790	$ 328	$ 246