Income Taxes (Schedule of Earnings Before Income Taxes and Provision for Income Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
United States	$ 10,971	$ 7,628	$ 4,239
Outside United States	(43)	(239)	(415)
Earnings before income taxes	10,928	7,389	3,824
Current:
Federal	2,346	1,968	1,965
State and local	681	603	542
Outside United States	1	1	2
Total current provision for income taxes	3,028	2,572	2,509
Deferred:
Federal	(133)	(893)	(1,190)
State and local	(97)	(54)	30
Total deferred provision for income taxes	(230)	(947)	(1,160)	$ (1,160)
Total provision for income taxes	$ 2,798	$ 1,625	$ 1,349