Consolidated Balance Sheets (Unaudited) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Assets
Cash and due from banks	$ 29,214	$ 53,723
Deposits with banks	311,318	121,814
Federal funds sold and securities purchased under resale agreements (included $25,306 and $24,258 at fair value)	252,507	296,296
Securities borrowed (included $5,295 and $10,177 at fair value)	117,158	119,017
Trading assets (included assets pledged of $121,085 and $108,784)	401,470	450,028
Securities (included $354,719 and $371,145 at fair value and assets pledged of $72,724 and $71,167)	354,725	371,152
Loans (included $1,923 and $2,555 at fair value)	725,586	733,796
Allowance for loan losses	(19,384)	(21,936)
Loans, net of allowance for loan losses	706,202	711,860
Accrued interest and accounts receivable	81,562	60,933
Premises and equipment	14,574	14,519
Goodwill	48,057	48,175
Mortgage servicing rights	9,335	7,614
Other intangible assets	1,951	2,235
Other assets (included $15,661 and $16,458 at fair value and assets pledged of $1,826 and $1,127)	111,421	101,775
Total assets	2,439,494	2,359,141
Liabilities
Deposits (included $5,838 and $5,733 at fair value)	1,202,950	1,193,593
Federal funds purchased and securities loaned or sold under repurchase agreements (included $4,661 and $4,388 at fair value)	258,962	240,103
Commercial paper	56,631	55,367
Other borrowed funds (included $12,572 and $11,591 at fair value)	30,385	26,636
Trading liabilities	148,593	131,918
Accounts payable and other liabilities (included $32 and $36 at fair value)	211,432	195,240
Beneficial interests issued by consolidated variable interest entities (included $1,043 and $1,170 at fair value)	55,090	63,191
Long-term debt (included $29,220 and $30,788 at fair value)	266,212	249,024
Total liabilities	2,230,255	2,155,072
Stockholders' equity
Preferred stock ($1 par value; authorized 200,000,000 shares; issued 1,145,750 and 905,750 shares)	11,458	9,058
Common stock ($1 par value; authorized 9,000,000,000 shares; issued 4,104,933,895 shares)	4,105	4,105
Capital surplus	93,416	94,604
Retained earnings	114,216	104,223
Accumulated other comprehensive income/(loss)	136	4,102
Shares held in RSU Trust, at cost (476,731 and 479,126 shares)	(21)	(21)
Treasury stock, at cost (335,916,201 and 300,981,690 shares)	(14,071)	(12,002)
Total stockholders’ equity	209,239	204,069
Total liabilities and stockholders’ equity	2,439,494	2,359,141
Assets and liabilities related to VIEs that are consolidated by the Firm
Assets
Trading assets (included assets pledged of $121,085 and $108,784)	9,232	11,966
Loans (included $1,923 and $2,555 at fair value)	72,342	82,723
Other assets (included $15,661 and $16,458 at fair value and assets pledged of $1,826 and $1,127)	2,224	2,090
Total assets	83,798	96,779
Liabilities
Beneficial interests issued by consolidated variable interest entities (included $1,043 and $1,170 at fair value)	55,090	63,191
Other liabilities	1,105	1,244
Total liabilities	$ 56,195	$ 64,435