Variable Interest Entities - Consolidated VIE Assets and Liabilities (Details) - USD ($) $ in Millions		Jun. 30, 2015		Dec. 31, 2014		Jun. 30, 2014
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Trading assets		$ 377,870		$ 398,988
Loans		791,247		757,336
Other assets, at fair value		101,469		102,597
Total assets		2,449,599	[1]	2,572,773	[1]	$ 2,519,995
Beneficial interests issued by consolidated VIEs		50,002		52,362
Total liabilities	[1]	2,208,394		2,341,046
Variable Interest Entity, Primary Beneficiary
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Loans		67,100		68,900
Other assets, at fair value		2,300		1,800
Total assets		74,600		79,800
Beneficial interests issued by consolidated VIEs		50,000		52,400
All other liabilities		900		900
Total liabilities		50,900		53,300
Variable Interest Entity, Primary Beneficiary | Long-term beneficial interests
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Beneficial interests issued by consolidated VIEs		34,500		35,400
Variable Interest Entity, Primary Beneficiary | Long-term beneficial interests maturities under 1 year
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Beneficial interests issued by consolidated VIEs		6,800
Variable Interest Entity, Primary Beneficiary | Long-term beneficial interests maturities between 1 and 5 years
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Beneficial interests issued by consolidated VIEs		23,100
Variable Interest Entity, Primary Beneficiary | Long-term beneficial interests maturities over 5 years
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Beneficial interests issued by consolidated VIEs		4,600
Variable Interest Entity, Primary Beneficiary | Debt and equity securities
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Trading assets		5,200		9,100
Variable Interest Entity, Primary Beneficiary | Firm-sponsored credit card trusts
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Loans		47,900		48,300
Other assets, at fair value		700		700
Total assets		48,600		49,000
Beneficial interests issued by consolidated VIEs		31,200		31,200
All other liabilities		0		0
Total liabilities		31,200		31,200
Variable Interest Entity, Primary Beneficiary | Firm-sponsored credit card trusts | Debt and equity securities
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Trading assets		0		0
Variable Interest Entity, Primary Beneficiary | Firm-administered multi-seller conduits
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Loans		16,500		17,700
Other assets, at fair value		0		100
Total assets		16,500		17,800
Beneficial interests issued by consolidated VIEs		13,000		12,000
All other liabilities		0		0
Total liabilities		13,000		12,000
Variable Interest Entity, Primary Beneficiary | Firm-administered multi-seller conduits | Debt and equity securities
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Trading assets		0		0
Variable Interest Entity, Primary Beneficiary | Municipal bond vehicles
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Loans		0		0
Other assets, at fair value		0		0
Total assets		2,600		5,300
Beneficial interests issued by consolidated VIEs		2,500		4,900
All other liabilities		0		0
Total liabilities		2,500		4,900
Variable Interest Entity, Primary Beneficiary | Municipal bond vehicles | Debt and equity securities
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Trading assets		2,600		5,300
Variable Interest Entity, Primary Beneficiary | Mortgage securitization entities
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Loans		700		700
Other assets, at fair value		0		0
Total assets		2,900		4,000
Beneficial interests issued by consolidated VIEs		1,200		2,100
All other liabilities		700		800
Total liabilities		1,900		2,900
Variable Interest Entity, Primary Beneficiary | Mortgage securitization entities | Debt and equity securities
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Trading assets		2,200		3,300
Variable Interest Entity, Primary Beneficiary | Student loan securitization entities
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Loans		2,000		2,200
Other assets, at fair value		100		0
Total assets		2,200		2,400
Beneficial interests issued by consolidated VIEs		2,000		2,100
All other liabilities		0		0
Total liabilities		2,000		2,100
Variable Interest Entity, Primary Beneficiary | Student loan securitization entities | Debt and equity securities
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Trading assets		100		200
Variable Interest Entity, Primary Beneficiary | Other
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Loans		0		0
Other assets, at fair value		1,500		1,000
Total assets		1,800		1,300
Beneficial interests issued by consolidated VIEs		100		100
All other liabilities		200		100
Total liabilities		300		200
Variable Interest Entity, Primary Beneficiary | Other | Debt and equity securities
Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract]
Trading assets		$ 300		$ 300

[1] The following table presents information on assets and liabilities related to VIEs that are consolidated by the Firm at June 30, 2015, and December 31, 2014. The difference between total VIE assets and liabilities represents the Firm’s interests in those entities, which were eliminated in consolidation.(in millions)Jun 30, 2015 Dec 31, 2014Assets Trading assets$5,168 $9,090Loans67,116 68,880All other assets2,274 1,815Total assets$74,558 $79,785Liabilities Beneficial interests issued by consolidated variable interest entities$50,002 $52,362All other liabilities868 949Total liabilities$50,870 $53,311The 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 June 30, 2015, and December 31, 2014, 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.