Income Taxes - Components of Income Tax Expense/(Benefit) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Current income tax expense/(benefit)
U.S. federal	$ 5,606	$ 2,865	$ 5,759
Non-U.S.	2,992	2,718	2,705
U.S. state and local	2,630	1,897	1,793
Total current income tax expense/(benefit)	11,228	7,480	10,257
Deferred income tax expense/(benefit)
U.S. federal	(2,004)	3,460	(2,776)
Non-U.S.	(154)	(101)	(126)
U.S. state and local	(580)	389	(671)
Total deferred income tax expense/(benefit)	(2,738)	3,748	(3,573)
Total income tax expense	8,490	11,228	6,684
Components of income tax expense/(benefit), supplemental information
Tax expense (benefits) recorded as a result of tax audit resolutions	(331)	69	(72)
Increase (decrease) to income tax allocated directly to equity	$ (4,500)	$ 2,000	$ (827)