Name:	jpm_LoansAndLeasesReceivableImpairedTroubledDebtRestructuringsNotHavingYetMadeSixPayments
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Loans that are repurchased from US government agencies, such as the Government National Mortgage Association (GNMA or Ginnie Mae), and modified subsequent to repurchase. These loans are excluded from loans accounted for as troubled debt restructurings.

No definition available.

Name:	jpm_ModifiedLoansRepurchasedFromUSGovernmentAgenciesExcludedFromTroubledDebtRestructurings
Namespace Prefix:	jpm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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

As part of the factors to be considered in analyzing credit statstics, 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

This item represents the estimated weighted average default rate for modified loans.

No definition available.

Name:	jpm_RateOfDefaultForModifiedLoansEstimatedWeightedAverage
Namespace Prefix:	jpm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5212-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 17

-URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5258-111524

Name:	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

Name:	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Amount of interest income recognized on a cash-basis method of accounting that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

Name:	us-gaap_ImpairedFinancingReceivableInterestIncomeCashBasisMethod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 14A

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953550-111524

Name:	us-gaap_ImpairedFinancingReceivableRecordedInvestment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

Name:	us-gaap_ImpairedFinancingReceivableRecordedInvestmentAbstract
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Data Type:	xbrli:stringItemType
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Amount of allowance for credit losses related to recorded investment.

Name:	us-gaap_ImpairedFinancingReceivableRelatedAllowance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.

Name:	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount of investment in impaired financing receivables for which there is no related allowance for credit losses.

Name:	us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount of investment in impaired financing receivables for which there is a related allowance for credit losses.

Name:	us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Name:	jpm_PortfolioSegmentAxis=jpm_ConsumerExcludingCreditCardLoanPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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

Name:	jpm_FinancingReceivableModificationStatusAxis=jpm_PermanentModificationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	jpm_ImpactOfRegulatoryGuidanceAxis=jpm_RegulatoryGuidanceRegardingChapter7LoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	jpm_FinancingReceivableByDelinquencyStatusAxis=jpm_NonaccrualMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ResidentialPrimeFinancingReceivableMember
Namespace Prefix:
Data Type:	na
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Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ResidentialSubprimeFinancingReceivableMember
Namespace Prefix:
Data Type:	na
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Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=jpm_ResidentialRealEstateExcludingPurchasedCreditImpairedMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	jpm_FinancingReceivableByDelinquencyStatusAxis=jpm_CurrentAndLessThan90DaysPastDueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
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Data Type:	na
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