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

The carrying value of off-balance sheet lending-related financial instruments (e.g., commitments and guarantees), which represents the allowance for lending-related commitments and the guarantee liability.

No definition available.

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

The contractual amount of others letters of credit supported by collateral.

No definition available.

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

Standby letters of credit and other financial guarantees and other letters of credit.

No definition available.

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

Standby letters of credit and other financial guarantees which are rated as investment-grade per company defined internal payment/performance risk groupings used for managing risk.

No definition available.

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

Standby letters of credit and other financial guarantees which are rated as noninvestment-grade per company defined internal payment/performance risk groupings used for managing risk.

No definition available.

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

The contractual amount of standby letters of credit supported by collateral.

No definition available.

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

The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=82913245&loc=d3e12069-110248

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

Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SX 210.12-09)
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690