Consolidated Statements of Income (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenue
Investment banking fees	$ 2,168	$ 1,846	$ 3,904	$ 3,726
Principal transactions	3,782	3,137	7,734	6,719
Lending- and deposit-related fees	1,495	1,482	2,972	2,930
Asset management, administration and commissions	4,304	4,047	8,613	7,924
Investment securities losses	(80)	(34)	(325)	(37)
Mortgage fees and related income	324	404	789	810
Card income	1,020	1,167	2,295	2,081
Other income	1,255	1,474	2,881	2,245
Noninterest revenue	14,268	13,523	28,863	26,398
Interest income	18,869	15,650	36,564	30,692
Interest expense	5,384	3,442	9,767	6,420
Net interest income	13,485	12,208	26,797	24,272
Total net revenue	27,753	25,731	55,660	50,670
Provision for credit losses	1,210	1,215	2,375	2,530
Noninterest expense
Compensation expense	8,338	7,757	17,200	16,013
Occupancy expense	981	912	1,869	1,873
Technology, communications and equipment expense	2,168	1,871	4,222	3,705
Professional and outside services	2,126	1,899	4,247	3,691
Marketing	798	756	1,598	1,469
Other expense	1,560	1,572	2,915	3,299
Total noninterest expense	15,971	14,767	32,051	30,050
Income before income tax expense	10,572	9,749	21,234	18,090
Income tax expense	2,256	2,720	4,206	4,613
Net income	8,316	7,029	17,028	13,477
Net income applicable to common stockholders	$ 7,880	$ 6,555	$ 16,119	$ 12,531
Net income per common share data
Basic earnings per share (in dollars per share)	$ 2.31	$ 1.83	$ 4.69	$ 3.49
Diluted earnings per share (in dollars per share)	$ 2.29	$ 1.82	$ 4.66	$ 3.47
Weighted-average basic shares (in shares)	3,415.2	3,574.1	3,436.7	3,587.9
Weighted-average diluted shares (in shares)	3,434.7	3,599.0	3,457.1	3,614.7
Cash dividends declared per common share (in dollars per share)	$ 0.56	$ 0.50	$ 1.12	$ 1.00