Name:	jpm_DerivativeGainLossOnDerivativeNetRealEstateMortgagesRelatedAndOtherAdjustments
Namespace Prefix:	jpm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Fees And Commissions, Mortgage Banking And Related, All Other

No definition available.

Name:	jpm_FeesAndCommissionsMortgageBankingAndRelatedAllOther
Namespace Prefix:	jpm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Combination of: 1) The noninterest income derived from mortgage banking activities (fees and commissions), including fees earned from servicing third-party assets. 2) The adjustment to the carrying value of the rights retained or purchased to service mortgages. These adjustments are made when the estimate of the fair value is changed. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

No definition available.

Name:	jpm_MortgageFeesAndRelatedIncome
Namespace Prefix:	jpm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Mortgage production revenue.

No definition available.

Name:	jpm_MortgageProductionRevenue
Namespace Prefix:	jpm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Net Production Revenue

No definition available.

Name:	jpm_NetProductionRevenueAbstract
Namespace Prefix:	jpm_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Operating Revenue Abstract.

No definition available.

Name:	jpm_OperatingRevenueAbstract
Namespace Prefix:	jpm_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Total net operating revenue related to real estate mortgage servicing activity.

No definition available.

Name:	jpm_OperatingRevenueNetRealEstateMortgages
Namespace Prefix:	jpm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Operating revenue related to real estate mortgage servicing activity, representing the net increase or decrease in fair value as a result of changes in servicing asset fair value due to collection/realization of expected cash flows.

No definition available.

Name:	jpm_OperatingRevenueRealEstateMortgagesChangesInFairValueOfMortgageServicingRightsChangesDueToCollectionRealizationOfExpectedCashFlows
Namespace Prefix:	jpm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Income from servicing real estate mortgages held by others. Also include any premiums received in lieu of regular servicing fees on such loans only as earned over the life of the loans. May also be net of any related impairment of fair value of capitalized service costs.

No definition available.

Name:	jpm_OperatingRevenueServicingFeesNetRealEstateMortgages
Namespace Prefix:	jpm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Risk management Abstract.

No definition available.

Name:	jpm_RiskManagementAbstract
Namespace Prefix:	jpm_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Risk management revenue related to real estate mortgage servicing activity, representing the net increase or decrease in fair value as a result of changes in estimated future prepayments due to changes in market interest rates, and the difference between actual and expected prepayments.

No definition available.

Name:	jpm_RiskManagementRevenueChangesInFairValueOfMortgageServicingRightsChangesInMarketInterestRatesAndOther
Namespace Prefix:	jpm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Risk management revenue related to real estate mortgage servicing activity, representing the net increase or decrease in fair value as a result of changes in other inputs, assumptions, or model used to calculate the fair value of servicing assets.

No definition available.

Name:	jpm_RiskManagementRevenueChangesInFairValueOfMortgageServicingRightsResultingFromChangesInOtherValuationInputsOrChangesInAssumptions
Namespace Prefix:	jpm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Total net risk management revenue related to real estate mortgage servicing activity.

No definition available.

Name:	jpm_RiskManagementRevenueNetRealEstateMortgages
Namespace Prefix:	jpm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Total net servicing revenue related to real estate mortgage activity.

No definition available.