Income Taxes (Components of Income Tax Expense (Benefit)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Federal:
Current	$ 579	$ (2,400)	$ (346)
Deferred	2,206	6,872	858
Total federal income tax	2,785	4,472	512
State and local:
Current	21	289	338
Deferred	912	648	272
Total state and local income tax	933	937	610
Foreign:
Current	106	(66)	14
Deferred	(44)	52	32
Total foreign income tax	62	(14)	46
Total	$ 3,780	$ 5,395	$ 1,168