Consolidated Statements of Income (Unaudited) (USD $) In Millions, except Per Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Revenue
Investment banking fees	$ 1,052	$ 1,476	$ 4,778	$ 4,358
Principal transactions	1,370	2,341	9,255	8,979
Lending-and deposit-related fees	1,643	1,563	4,838	4,795
Asset management, administration and commissions	3,448	3,188	10,757	9,802
Securities gains	607	102	1,546	1,712
Mortgage fees and related income	1,380	707	1,996	2,253
Credit card income	1,666	1,477	4,799	4,333
Other income	780	468	2,236	1,465
Noninterest revenue	11,946	11,322	40,205	37,697
Interest income	15,160	15,606	46,239	48,170
Interest expense	3,343	3,104	10,681	9,271
Net interest income	11,817	12,502	35,558	38,899
Total net revenue	23,763	23,824	75,763	76,596
Provision for credit losses	2,411	3,223	5,390	13,596
Noninterest expense
Compensation expense	6,908	6,661	22,740	21,553
Occupancy expense	935	884	2,848	2,636
Technology, communications and equipment expense	1,248	1,184	3,665	3,486
Professional and outside services	1,860	1,718	5,461	4,978
Marketing	926	651	2,329	1,862
Other expense	3,445	3,082	10,687	9,942
Amortization of intangibles	212	218	641	696
Total noninterest expense	15,534	14,398	48,371	45,153
Income before income tax expense	5,818	6,203	22,002	17,847
Income tax expense	1,556	1,785	6,754	5,308
Net income	4,262	4,418	15,248	12,539
Net income applicable to common stockholders	3,936	4,019	14,141	11,353
Net income per common share data
Basic earnings per share	$ 1.02	$ 1.02	$ 3.60	$ 2.86
Diluted earnings per share	$ 1.02	$ 1.01	$ 3.57	$ 2.84
Weighted-average basic shares	3,859.6	3,954.3	3,933.2	3,969.4
Weighted-average diluted shares	3,872.2	3,971.9	3,956.5	3,990.7
Cash dividends declared per common share	$ 0.25	$ 0.05	$ 0.75	$ 0.15
Other-than-temporary impairment losses included in securities gains
Total other-than-temporary impairment losses	0	0	(27)	(94)
Losses recorded in/(reclassified from) other comprehensive income	(15)	0	(31)	(6)
Total credit losses recognized in income	$ (15)	$ 0	$ (58)	$ (100)