Consolidated Statements of Income (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Revenue
Investment banking fees	$ 5,808		$ 5,911		$ 6,190
Principal transactions	5,536		10,005		10,894
Lending-and deposit-related fees	6,196		6,458		6,340
Asset management, administration and commissions	13,868		14,094		13,499
Securities gains	2,110	[1]	1,593	[1]	2,965	[1]
Mortgage fees and related income	8,687		2,721		3,870
Card income	5,658		6,158		5,891
Other income	4,258		2,605		2,044
Noninterest revenue	52,121		49,545		51,693
Interest income	56,063		61,293		63,782
Interest expense	11,153		13,604		12,781
Net interest income	44,910		47,689		51,001
Total net revenue	97,031		97,234		102,694
Provision for credit losses	3,385		7,574		16,639
Noninterest expense
Compensation expense	30,585		29,037		28,124
Occupancy expense	3,925		3,895		3,681
Technology, communications and equipment expense	5,224		4,947		4,684
Professional and outside services	7,429		7,482		6,767
Marketing	2,577		3,143		2,446
Other expense	14,032		13,559		14,558
Amortization of intangibles	957		848		936
Total noninterest expense	64,729		62,911		61,196
Income before income tax expense	28,917		26,749		24,859
Income tax expense	7,633		7,773		7,489
Net income	21,284		18,976		17,370
Net income applicable to common stockholders	19,877		17,568		15,764
Per common share data - Basic earnings per share
Basic earnings per share (in dollars per share)	$ 5.22		$ 4.50		$ 3.98
Per common share data - Diluted earnings per share
Diluted earnings per share (in dollars per share)	$ 5.20		$ 4.48		$ 3.96
Weighted-average basic shares	3,809.4		3,900.4		3,956.3
Weighted-average diluted shares	3,822.2		3,920.3		3,976.9
Cash dividends declared per common share	$ 1.20		$ 1.00		$ 0.20
Other-than-temporary impairment losses included in securities gains
Total other-than-temporary impairment losses	113		27		94
Losses recorded in/(reclassified from) other comprehensive income	85		(49)		(6)
Total credit losses recognized in income	43		76		100
Credit related [Member]
Other-than-temporary impairment losses included in securities gains
Total credit losses recognized in income	28		76		100
Intent to sell [Member]
Other-than-temporary impairment losses included in securities gains
Total credit losses recognized in income	$ 15		$ 0		$ 0

[1] The following other-than-temporary impairment losses are included in securities gains for the periods presented.Year ended December 31, (in millions) 2012 2011 2010Debt securities the Firm does not intend to sell that have credit losses Total other-than-temporary impairment losses $(113) $(27) $(94)Losses recorded in/(reclassified from) other comprehensive income 85 (49) (6)Total credit losses recognized in income (28) (76) (100)Securities the Firm intends to sell (15) — —Total other-than-temporary impairment losses recognized in income $(43) $(76) $(100)