Income Taxes - Components of Income Tax Expense/(Benefit) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Current income tax expense/(benefit)
U.S. federal	$ 3,109	$ 7,091	$ 8,973
U.S. state and local	2,559	2,762	3,266
Non-U.S.	4,268	4,753	4,355
Total current income tax expense	9,936	14,606	16,594
Deferred income tax expense/(benefit)
U.S. federal	4,447	1,771	(3,475)
U.S. state and local	906	161	(1,094)
Non-U.S.	258	72	35
Total deferred income tax expense/(benefit)	5,611	2,004	(4,534)
Total income tax expense	15,547	16,610	12,060
Components of income tax expense/(benefit), supplemental information
Tax benefits recorded as a result of tax audit resolutions	$ 629	$ 314	$ 68