Name:	jpm_FairValueOptionBeneficialInterestsIssuedByConsolidatedVIEsChangesInFairValue
Namespace Prefix:	jpm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Changes in fair value related to debt and equity trading securities for which the fair value election was made.

No definition available.

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

Changes in fair value related to deposits for which the fair value election was made.

No definition available.

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

Changes in fair value related to federal funds purchased and securities loaned or sold under repurchase agreements for which the fair value election was made.

No definition available.

Name:	jpm_FairValueOptionFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchaseChangesInFairValue
Namespace Prefix:	jpm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Changes in fair value related to federal funds sold and securities purchased under resale agreements for which the fair value election was made.

No definition available.

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

Other Changes In Fair Value of loans for which the fair value election was made.

No definition available.

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

This item represents the estimated amount of gains or losses included in earnings during the period attributable to changes in instrument-specific credit risk arising from loans reported as trading assets.

No definition available.

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

Other changes in fair value of loans reported as trading assets for which the fair value election was made.

No definition available.

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

Changes In the fair value of long term debt related to factors other than instrument-specific credit risk.

No definition available.

Name:	jpm_FairValueOptionLongTermDebtOtherChangesInFairValue
Namespace Prefix:	jpm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

This item represents the changes in fair value for other assets for which the fair value election was made that are not otherwise specified in the taxonomy.

No definition available.

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

Changes in fair value related to other borrowed funds for which the fair value election was made.

No definition available.

Name:	jpm_FairValueOptionOtherBorrowedFundsChangesInFairValue
Namespace Prefix:	jpm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Changes in fair value related to other liabilities not otherwise specified in the taxonomy for which the fair value election was made.

No definition available.

Name:	jpm_FairValueOptionOtherLiabilitiesChangesInFairValue
Namespace Prefix:	jpm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Changes in fair value related to securities borrowed for which the fair value election was made.

No definition available.

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

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

Trading liabilities, change in fair value.

No definition available.

Name:	jpm_TradingLiabilitiesChangeInFairValue
Namespace Prefix:	jpm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 30

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612

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

This item represents the estimated amount of gains and losses from fair value changes included in earnings that are attributable to changes in the instrument-specific credit risk of liabilities with fair values that have been significantly affected during the reporting period by changes in the instrument-specific credit risk.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 30

-Subparagraph (d)(1)

-URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612

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

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

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

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

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

Name:	jpm_ValuationAdjustmentsToFairValueOfFinancialInstrumentsAxis=jpm_DebitValuationAdjustmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_OtherIncomeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: