Consolidated Statements of Income (Unaudited) - USD ($) shares in Millions, $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenue
Investment banking fees		$ 3,470	$ 2,850	$ 6,440	$ 4,716
Principal transactions		4,076	7,621	10,576	10,558
Lending- and deposit-related fees		1,760	1,431	3,447	3,137
Asset management, administration and commissions		5,194	4,266	10,223	8,806
Investment securities gains/(losses)		(155)	26	(141)	259
Mortgage fees and related income		551	917	1,255	1,237
Card income		1,647	974	2,997	1,969
Other income	[1]	1,195	1,137	2,318	2,387
Noninterest revenue		17,738	19,222	37,115	33,069
Interest income		14,094	16,112	28,365	35,273
Interest expense		1,353	2,259	2,735	6,981
Net interest income		12,741	13,853	25,630	28,292
Total net revenue		30,479	33,075	62,745	61,361
Provision for credit losses		(2,285)	10,473	(6,441)	18,758
Noninterest expense
Compensation expense		9,814	9,509	20,415	18,404
Occupancy expense		1,090	1,080	2,205	2,146
Technology, communications and equipment expense		2,488	2,590	5,007	5,168
Professional and outside services		2,385	1,999	4,588	4,027
Marketing		626	481	1,377	1,281
Other expense		1,264	1,283	2,800	2,707
Total noninterest expense		17,667	16,942	36,392	33,733
Income before income tax expense		15,097	5,660	32,794	8,870
Income tax expense	[1]	3,149	973	6,546	1,318
Net income		11,948	4,687	26,248	7,552
Net income applicable to common stockholders		$ 11,496	$ 4,265	$ 25,346	$ 6,698
Net income per common share data
Basic earnings per share (in dollars per share)		$ 3.79	$ 1.39	$ 8.30	$ 2.17
Diluted earnings per share (in dollars per share)		$ 3.78	$ 1.38	$ 8.28	$ 2.17
Weighted-average basic shares (in shares)		3,036.6	3,076.3	3,054.9	3,086.1
Weighted-average diluted shares (in shares)		3,041.9	3,081.0	3,060.3	3,090.8

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