Consolidated Statements of Income (Unaudited) - USD ($) shares in Millions, $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenue
Investment banking fees		$ 3,282	$ 2,187	$ 9,722	$ 6,903
Principal transactions		3,546	4,142	14,122	14,700
Lending- and deposit-related fees		1,801	1,647	5,248	4,784
Asset management, administration and commissions		5,257	4,470	15,480	13,276
Investment securities gains/(losses)		(256)	473	(397)	732
Mortgage fees and related income		600	1,087	1,855	2,324
Card income		1,005	1,169	4,002	3,138
Other income	[1]	1,332	1,067	3,650	3,454
Noninterest revenue		16,567	16,242	53,682	49,311
Interest income		14,480	14,700	42,845	49,973
Interest expense		1,400	1,687	4,135	8,668
Net interest income		13,080	13,013	38,710	41,305
Total net revenue		29,647	29,255	92,392	90,616
Provision for credit losses		(1,527)	611	(7,968)	19,369
Noninterest expense
Compensation expense		9,087	8,630	29,502	27,034
Occupancy expense		1,109	1,142	3,314	3,288
Technology, communications and equipment expense		2,473	2,564	7,480	7,732
Professional and outside services		2,523	2,178	7,111	6,205
Marketing		712	470	2,089	1,751
Other expense		1,159	1,891	3,959	4,598
Total noninterest expense		17,063	16,875	53,455	50,608
Income before income tax expense		14,111	11,769	46,905	20,639
Income tax expense	[1]	2,424	2,326	8,970	3,644
Net income		11,687	9,443	37,935	16,995
Net income applicable to common stockholders		$ 11,229	$ 9,015	$ 36,576	$ 15,712
Net income per common share data
Basic earnings per share (in dollars per share)		$ 3.74	$ 2.93	$ 12.05	$ 5.10
Diluted earnings per share (in dollars per share)		$ 3.74	$ 2.92	$ 12.02	$ 5.09
Weighted-average basic shares (in shares)		2,999.9	3,077.8	3,036.4	3,083.3
Weighted-average diluted shares (in shares)		3,005.1	3,082.8	3,041.7	3,088.1

[1] Prior-period amounts have been revised to conform with the current presentation. Refer to Note 1 for further information.