Variable Interest Entities - Resecuritizations, Multi-seller conduits (Details) - USD ($)	3 Months Ended
	Mar. 31, 2016		Mar. 31, 2015	Dec. 31, 2015
Variable Interest Entity [Line Items]
Securities transferred to agency resecuritization VIEs	$ 2,900,000,000		$ 3,900,000,000
Securities transferred to private-label re-securitization VIEs	0		472,000,000
Total assets (including notional amount of interest-only securities)	2,423,808,000,000	[1]	2,576,619,000,000	$ 2,351,698,000,000	[1]
Unfunded lending-related commitments	960,434,000,000		$ 949,166,000,000	940,395,000,000
Nonconsolidated rirm-sponsored private-label re-securitizations
Variable Interest Entity [Line Items]
Total assets (including notional amount of interest-only securities)	2,000,000,000			2,200,000,000
Re-securitization | Re-securitizations
Variable Interest Entity [Line Items]
Senior and subordinated interest in nonconsolidated agency re-securitization entities	4,200,000,000			4,600,000,000
Multi-seller conduits
Variable Interest Entity [Line Items]
Commercial paper eliminated in consolidation	18,600,000,000			15,700,000,000
Multi-seller conduits | Commercial and other
Variable Interest Entity [Line Items]
Unfunded lending-related commitments	$ 8,600,000,000			$ 5,600,000,000

[1] The following table presents information on assets and liabilities related to variable interest entities (“VIEs”) that are consolidated by the Firm at March 31, 2016, and December 31, 2015. The difference between total VIE assets and liabilities represents the Firm’s interests in those entities, which were eliminated in consolidation.(in millions)Mar 31, 2016 Dec 31, 2015Assets Trading assets$4,834 $3,736Loans66,680 75,104All other assets3,523 2,765Total assets$75,037 $81,605Liabilities Beneficial interests issued by consolidated VIEs$38,673 $41,879All other liabilities789 809Total liabilities$39,462 $42,688The 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 March 31, 2016, and December 31, 2015, the Firm provided limited program-wide credit enhancement of $2.0 billion related to its Firm-administered multi-seller conduits, which are eliminated in consolidation. For further discussion, see Note 15.