Name:	jpm_LoansChargeOffCriteriaPeriodPastDue
Namespace Prefix:	jpm_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

For commercial real estate loans, the period of time for collateral values to be updated, either by obtaining a new appraisal or by performing an internal analysis, in accordance with the Firm’s policies (collateral values are generally based on appraisals from internal and external valuation sources).

No definition available.

Name:	jpm_NumberOfMonthsBeforeUpdatingCollateralValuesOnCommercialRealEstateLoans
Namespace Prefix:	jpm_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

For residential real estate loans with collateral, when it becomes likely that a borrower is either unable or unwilling to pay, the number of months the Firm waits to update the broker's price opinion of a home based on an exterior-only valuation.

No definition available.

Name:	jpm_NumberOfMonthsBeforeUpdatingExteriorOpinionOnHomeValuation
Namespace Prefix:	jpm_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

The number of months a borrower has performed under modified terms of a loan.

No definition available.

Name:	jpm_NumberOfMonthsBorrowerHasPerformedUnderModifiedTerms
Namespace Prefix:	jpm_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

For loans modified in TDRs, the number of borrower payments under the modified terms to generally be recognized as interest income on a cash basis.

No definition available.

Name:	jpm_NumberOfPaymentsUnderModifiedTermsToRecognizeInterestOnCashBasis
Namespace Prefix:	jpm_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Number of Loan Portfolio Segments

No definition available.

Name:	jpm_NumberofLoanPortfolioSegments
Namespace Prefix:	jpm_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

As part of the factors to be considered in analyzing credit statistics, the period of time the loan is past due before being charged off.

No definition available.

Name:	jpm_PeriodPastDueCreditAnalysisFactorsChargeOffCriteria
Namespace Prefix:	jpm_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=jpm_ConsumerExcludingCreditCardLoanPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=jpm_ConsumerExcludingCreditCardLoanPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_FinancingReceivablesPeriodPastDueAxis=jpm_DaysPastDue90OrMoreMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_FinancingReceivablesPeriodPastDueAxis=jpm_FinancingReceivablesGreaterthan30DaysPastDueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=jpm_ResidentialRealEstateNonModifiedCreditCardAndScoredBusinessBankingLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_FinancingReceivablesPeriodPastDueAxis=jpm_DaysPastDue180OrMoreMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=jpm_AutoStudentandModifiedCreditCardLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_FinancingReceivablesPeriodPastDueAxis=jpm_FinancingReceivablesEqualtoGreaterthan120DaysPastDueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=jpm_ResidentialRealEstateAndAutoLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_FinancingReceivablesPeriodPastDueAxis=jpm_DaysUntilChargeOffLessThan60WithNotificationOfBankruptcyFilingOrOtherEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ResidentialMortgageMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: