Parent Company - Condensed Statements of Income and Comprehensive Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Non-interest revenues
Total non-interest revenues	$ 54,865	$ 50,406	$ 47,381
Interest income	25,598	23,795	19,983
Interest expense	8,234	8,252	6,849
Total revenues net of interest expense	72,229	65,949	60,515
Expenses
Salaries and employee benefits	9,016	8,198	8,067
Other	6,987	6,364	6,807
Total expenses	53,178	47,869	45,079
Income tax benefit	2,962	2,766	2,139
Net income	10,833	10,129	8,374
Net unrealized pension and other postretirement benefits, net of tax	(28)	25	37
Comprehensive income	10,951	9,806	8,512
Parent Company
Non-interest revenues
Other	375	390	407
Total non-interest revenues	375	390	407
Interest income	1,814	1,858	1,558
Interest expense	2,031	1,869	1,436
Total revenues net of interest expense	158	379	529
Expenses
Salaries and employee benefits	512	474	487
Other	427	385	408
Total expenses	939	859	895
Loss before income tax and equity in net income of subsidiaries	(781)	(480)	(366)
Income tax benefit	(203)	(126)	(163)
Equity in net income of subsidiaries and affiliates	11,411	10,483	8,577
Net income	10,833	10,129	8,374
Net unrealized pension and other postretirement benefits, net of tax	(16)	41	5
Other comprehensive income (loss), net	134	(364)	133
Comprehensive income	$ 10,951	$ 9,806	$ 8,512