Parent Company - balance sheets (Details1) (USD $)	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010	Dec. 31, 2009
Assets
Cash and due from banks	$ 53,723,000,000		$ 59,602,000,000		$ 27,567,000,000	$ 26,206,000,000
Trading assets	450,028,000,000		443,963,000,000
Available-for-sale securities	371,145,000,000		364,781,000,000
Total loans	733,796,000,000		723,720,000,000
Other assets, at fair value	101,775,000,000		104,131,000,000
Total assets(a)	2,359,141,000,000	[1]	2,265,792,000,000	[1]	2,117,605,000,000
Liabilities and stockholders equity
Long-term debt	249,024,000,000		256,775,000,000
Total liabilities(a)	2,155,072,000,000	[1]	2,082,219,000,000	[1]
Total stockholders' equity	204,069,000,000		183,573,000,000
Total liabilities and stockholders’ equity	2,359,141,000,000		2,265,792,000,000
Parent company condensed financial statements supplemental information
Long-term debt maturity, 2013	31,336,000,000
Long-term debt maturity, 2014	35,800,000,000
Long-term debt maturity, 2015	32,000,000,000
Long-term debt maturity, 2016	28,000,000,000
Long-term debt maturity, 2017	33,600,000,000
JPMorgan Chase & Co.
Assets
Cash and due from banks	216,000,000		132,000,000		96,000,000	102,000,000
Deposits with banking subsidiaries	75,521,000,000		91,622,000,000
Trading assets	8,128,000,000		18,485,000,000
Available-for-sale securities	3,541,000,000		3,657,000,000
Total loans	2,101,000,000		1,880,000,000
Advances To and Receviables From Subsidiaries, Bank and Bank Holding Companies	39,773,000,000		39,888,000,000
Advances To and Receviables From Subsidiaries, Nonbanking Companies	86,904,000,000		83,138,000,000
Investments in Subsidiaries, Bank and Bank Holding Companies	170,276,000,000		157,160,000,000
Investments in Subsidiaries, Nonbanking Companies	45,305,000,000		42,231,000,000
Goodwill and other intangibles	1,018,000,000		1,027,000,000
Other assets, at fair value	16,481,000,000		15,506,000,000
Total assets(a)	449,264,000,000		454,726,000,000
Liabilities and stockholders equity
Borrowings from, and payables to, subsidiaries and affiliates	16,744,000,000		30,231,000,000
Other borrowed funds, primarily commercial paper	62,010,000,000		59,891,000,000
Other Liabilities	8,208,000,000		7,653,000,000
Long-term debt	158,233,000,000		173,378,000,000
Total liabilities(a)	245,195,000,000		271,153,000,000
Total stockholders' equity	204,069,000,000		183,573,000,000
Total liabilities and stockholders’ equity	449,264,000,000		454,726,000,000
Parent company condensed financial statements supplemental information
Long-term debt maturity, 2013	19,346,000,000
Long-term debt maturity, 2014	25,100,000,000
Long-term debt maturity, 2015	21,600,000,000
Long-term debt maturity, 2016	17,500,000,000
Long-term debt maturity, 2017	$ 17,300,000,000

[1] The following table presents information on assets and liabilities related to VIEs that are consolidated by the Firm at December 31, 2012 and 2011. The difference between total VIE assets and liabilities represents the Firm’s interests in those entities, which were eliminated in consolidation.December 31, (in millions)2012 2011Assets Trading assets$11,966 $12,079Loans82,723 86,754All other assets2,090 2,638Total assets$96,779 $101,471Liabilities Beneficial interests issued by consolidated variable interest entities$63,191 $65,977All other liabilities1,244 1,487Total liabilities$64,435 $67,464The assets of the consolidated VIEs are used to settle the liabilities of those entities. The holders of the beneficial interests do not have recourse to the general credit of JPMorgan Chase. At both December 31, 2012 and 2011, the Firm provided limited program-wide credit enhancement of $3.1 billion related to its Firm-administered multi-seller conduits, which are eliminated in consolidation. For further discussion, see Note 16 on pages 280–291 of this Annual Report.