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
Income Tax Disclosure [Abstract]
Current Tax Provision, Federal	$ 213	$ 1,724	$ 387
Current Tax Provision, State	70	216	238
Current Tax Provision, Foreign	575	513	427
Current Income Tax Expense Benefit	858	2,453	1,052
Future Tax Provision, Federal	(411)	(1,399)	(26)
Future Tax Provision, State	(53)	(166)	41
Future Tax Provision, Foreign	62	(98)	(103)
Deferred income tax benefit	(402)	(1,663)	(88)
Effective income tax rate	$ 456	$ 790	$ 964