Income Taxes (Schedule of Earnings Before Income Taxes and Provision for Income Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
United States	$ 7,628	$ 4,239	$ 6,842
Outside United States	(239)	(415)	48
Earnings before income taxes	7,389	3,824	6,890
Current:
Federal	1,968	1,965	2,025
State and local	603	542	553
Outside United States	1	2	22
Total current provision for income taxes	2,572	2,509	2,600
Deferred:
Federal	(893)	(1,190)	(130)
State and local	(54)	30	(34)
Total deferred provision for income taxes	(947)	(1,160)	(164)	$ (164)
Total provision for income taxes	$ 1,625	$ 1,349	$ 2,436