Monetary amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12

+ Details

Name:	invest_DerivativeNotionalAmount
Namespace Prefix:	invest
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

- Definition

Commitments related to leveraged and acquisition finance activities.

+ Details

Name:	jpm_CommitmentsToExtendCreditLeveragedAndAcquisitionFinanceActivities
Namespace Prefix:	jpm
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Credit enhancements and bond and commercial paper liquidity commitments to U.S. states and municipalities, hospitals and other not-for-profit entities.

+ Details

Name:	jpm_CreditEnhancementsAndBondAndCommercialPaperLiquidityCommitmentsToUsStatesAndMunicipalitiesHospitalsAndOtherNotForProfitEntities
Namespace Prefix:	jpm
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

This element represents the payables portion of types of derivative financial instruments gualifying as guarantees which are financial instruments or other contractual arrangements with all three of the following characteristics: (a) it has (1) one or more underlyings and (2) one or more notional amounts or payment provisions or both. Those terms determine the amount of the settlement or settlements, and, in some cases, whether or not a settlement is required; (b) it requires no initial net investment or an initial net investment that is smaller than would be required for other types of contracts that would be expected to have a similar response to changes in market factors; and (c) its terms require or permit net settlement, it can readily be settled net by a means outside the contract, or it provides for delivery of an asset that puts the recipient in a position not substantially different from net settlement. Notwithstanding the above characteristics, loan commitments that relate to the origination of mortgage loans that will be held for sale shall be accounted for as derivative instruments by the issuer of the loan commitment (that is, the potential lender).

+ Details

Name:	jpm_DerivativeQualifyingAsGuaranteesPayables
Namespace Prefix:	jpm
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

This element represents the receivables portion of types of derivative financial instruments gualifying as guarantees which are financial instruments or other contractual arrangements with all three of the following characteristics: (a) it has (1) one or more underlyings and (2) one or more notional amounts or payment provisions or both. Those terms determine the amount of the settlement or settlements, and, in some cases, whether or not a settlement is required; (b) it requires no initial net investment or an initial net investment that is smaller than would be required for other types of contracts that would be expected to have a similar response to changes in market factors; and (c) its terms require or permit net settlement, it can readily be settled net by a means outside the contract, or it provides for delivery of an asset that puts the recipient in a position not substantially different from net settlement. Notwithstanding the above characteristics, loan commitments that relate to the origination of mortgage loans that will be held for sale shall be accounted for as derivative instruments by the issuer of the loan commitment (that is, the potential lender).

+ Details

Name:	jpm_DerivativeQualifyingAsGuaranteesReceivables
Namespace Prefix:	jpm
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Derivatives maximum exposure to loss.

+ Details

Name:	jpm_DerivativesMaximumExposureToLoss
Namespace Prefix:	jpm
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum potential amount of future payments (undiscounted) for derivatives qualifying as guarantees the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ Details

Name:	jpm_GuaranteeObligationsMaximumExposureDerivatives
Namespace Prefix:	jpm
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum potential amount of future payments (undiscounted) the guarantor or committed party could be required to make under the guarantee or commitment or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ Details

Name:	jpm_GuarantorObligationsAndCommitmentsMaximumExposureUndiscounted
Namespace Prefix:	jpm
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Collateral held in support of securities lending indemnification agreements.

+ Details

Name:	jpm_IndemnificationAgreementSecuritiesLendingGuaranteesCollateralHeldInSupportOf
Namespace Prefix:	jpm
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The carrying value of the related liability of loans sold with recourse.

+ Details

Name:	jpm_IndemnificationAgreementsLoanSaleAndSecuritizationLoansSoldWithRecourseCarryingValue
Namespace Prefix:	jpm
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The contractual amount (unpaid principal balance) of loans sold with recourse.

+ Details

Name:	jpm_IndemnificationAgreementsLoanSaleAndSecuritizationLoansSoldWithRecourseContractualAmount
Namespace Prefix:	jpm
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

This item represents the fair value of investments valued at net asset fair value for which there are unfunded commitments to make investments.

+ Details

Name:	jpm_InvestmentsValuedAtNetAssetValueUnfundedCommitmentsInvestmentsFairValue
Namespace Prefix:	jpm
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Wholesale off-balance sheet contractual amount of lending-related commitments net of risk participations for other letters of credit.

+ Details

Name:	jpm_OffBalanceSheetLendingRelatedCommitmentsWholesaleContractualAmountNetOfRiskParticipationsOtherLettersOfCredit
Namespace Prefix:	jpm
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Wholesale off-balance sheet contractual amount of lending-related commitments net of risk participations for other unfunded commitments to extend credit.

+ Details

Name:	jpm_OffBalanceSheetLendingRelatedCommitmentsWholesaleContractualAmountNetOfRiskParticipationsOtherUnfundedCommitmentsToExtendCredit
Namespace Prefix:	jpm
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Wholesale off-balance sheet contractual amount of lending-related commitments net of risk participantions for standby letters of credit and other financial guarantees.

+ Details

Name:	jpm_OffBalanceSheetLendingRelatedCommitmentsWholesaleContractualAmountNetOfRiskParticipationsStandbyLettersOfCreditAndOtherFinancialGuarantees
Namespace Prefix:	jpm
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Off Balance Sheet Lending Related Financial Instruments Guarantees And Other Commitments Numeric Abstract.

+ Details

Name:	jpm_OffBalanceSheetLendingRelatedFinancialInstrumentsGuaranteesAndOtherCommitmentsNumericAbstract
Namespace Prefix:	jpm
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Collateral held relating to other letters of credit.

+ Details

Name:	jpm_OtherLettersOfCreditCollateralHeld
Namespace Prefix:	jpm
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Percentage of decline in home prices assumption.

+ Details

Name:	jpm_PercentageOfDeclineInHomePricesAssumption
Namespace Prefix:	jpm
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of decline in home prices assumption beyond firms current assumptions.

+ Details

Name:	jpm_PercentageOfDeclineInHomePricesAssumptionBeyondFirmsCurrentAssumptions
Namespace Prefix:	jpm
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Allowance for lending-related commitments for standby and other letters of credit.

+ Details

Name:	jpm_StandbyAndOtherLettersOfCreditAllowance
Namespace Prefix:	jpm
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value of standby and other letters of credit, which represents the allowance for lending-relaed commitments plus the fair value of the guarantee liability.

+ Details

Name:	jpm_StandbyAndOtherLettersOfCreditCarryingValue
Namespace Prefix:	jpm
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Collateral held relating to standby letters of credit.

+ Details

Name:	jpm_StandbyLettersOfCreditCollateralHeld
Namespace Prefix:	jpm
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Unissued standby letter of credit commitments.

+ Details

Name:	jpm_StandbyLettersOfCreditUnissuedCommitments
Namespace Prefix:	jpm
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

This item represents unfunded commitments to invest in other equity investments.

+ Details

Name:	jpm_UnfundedCommitmentsInvestmentsOtherEquityInvestments
Namespace Prefix:	jpm
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

This item represents unfunded commitments to invest in third party private equity funds.

+ Details

Name:	jpm_UnfundedCommitmentsInvestmentsPrivateEquityFundsThirdParty
Namespace Prefix:	jpm
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

This represents the amount of commitments to enter into forward starting reverse repurchase agreements and securities borrowing agreements.

+ Details

Name:	jpm_UnsettledForwardStartingReverseRepurchaseAndSecuritiesBorrowingAgreements
Namespace Prefix:	jpm
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Definition

This represents the amount of commitments to enter into reverse repurchase and securities borrowing agreements with regular way settlement periods.

+ Details

Name:	jpm_UnsettledReverseRepurchaseAndSecuritiesBorrowingAgreementsWithRegularWaySettlementPeriods
Namespace Prefix:	jpm
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 5
-Paragraph 9
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Interpretation (FIN)
-Number 45
-Paragraph 13
-Subparagraph c
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: 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=6851643&loc=d3e12069-110248

+ Details

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

- Definition

The difference between the maximum amount of estimated loss and the amount recorded as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Interpretation (FIN)
-Number 14
-Paragraph 3
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Name:	us-gaap_LossContingencyRangeOfPossibleLossPortionNotAccrued
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 09
-Article 12

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e24092-122690

+ Details

Name:	us-gaap_ValuationAllowancesAndReservesBalance
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Off-Balance Sheet Lending-Related Financial Instruments, Guarantees and Other Commitments - Supplemental Information (Details Textuals) (USD $)	6 Months Ended	12 Months Ended
	Jun. 30, 2011	Dec. 31, 2010	Jun. 30, 2010	Dec. 31, 2009
Off-balance sheet lending related-financial instruments, guarantees and other commitments (Numeric) [Abstract]
Unissued standly letters of credit commitments	$ 41,900,000,000	$ 41,600,000,000
Unfunded commitments to third-party private equity funds	876,000,000	1,000,000,000
Unfunded commitments for other equity investments	1,500,000,000	1,400,000,000
Investments that are generally fair valued at net asset value	815,000,000	1,000,000,000
Commitments related to leveraged and acquisition finance activities	7,100,000,000	5,900,000,000
Notional amount on stable value contracts	26,200,000,000	25,900,000,000
Maximum exposure to loss on derivatives	2,800,000,000	2,700,000,000
Unsettled reverse repurchase and securities borrowing agreements with regular way settlement periods	14,000,000,000	14,400,000,000
Unsettled forward starting reverse repurchase and securities borrowing agreements	45,600,000,000	25,500,000,000
Allowance for lending-related commitments	626,000,000	717,000,000	912,000,000	939,000,000
Percentage of decline in home prices assumption	45.00%
Percentage of decline in home prices assumption beyond the Firm's current assumptions	11.00%
Standby Letters of Credit, and Other Financial Guarantees [Member] \| Other Unfunded Commitments to Extend Credit
Off-balance sheet lending related-financial instruments, guarantees and other commitments (Numeric) [Abstract]
Credit enhancements and bond and commercial paper liquidity commitments	46,400,000,000	43,400,000,000
Other Guarantees and Commitments \| Letters of Credit Hedged By Derivative Transactions
Off-balance sheet lending related-financial instruments, guarantees and other commitments (Numeric) [Abstract]
Contractual amount	3,800,000,000	3,800,000,000
Other Unfunded Commitments to Extend Credit
Off-balance sheet lending related-financial instruments, guarantees and other commitments (Numeric) [Abstract]
Contractual amount net of risk participations for other unfunded commitments to extend credit	608,000,000	542,000,000
Securities Lending Indemnifications [Member]
Off-balance sheet lending related-financial instruments, guarantees and other commitments (Numeric) [Abstract]
Collateral held in support of securities lending indemnification agreements	207,900,000,000	185,000,000,000
Contractual amount	205,411,000,000	181,717,000,000
Derivative Qualifying as Guarantees [Member]
Off-balance sheet lending related-financial instruments, guarantees and other commitments (Numeric) [Abstract]
Derivatives qualifying as guarantees payables	420,000,000	390,000,000
Derivatives qualifying as guarantees receivables	99,000,000	96,000,000
Notional value of the derivatives deemed to be guarantees	84,100,000,000	87,800,000,000
Contractual amount	84,089,000,000	87,768,000,000
Other Guarantees and Commitments
Off-balance sheet lending related-financial instruments, guarantees and other commitments (Numeric) [Abstract]
Contractual amount	6,177,000,000	6,492,000,000
Standby Letters of Credit, and Other Financial Guarantees [Member]
Off-balance sheet lending related-financial instruments, guarantees and other commitments (Numeric) [Abstract]
Contractual amount net of risk participations for standby letters of credit and other financial guarantees	22,300,000,000	22,400,000,000
Collateral held relating to standby letters of credit	39,335,000,000	37,815,000,000
Allowance for lending-related commitments	314,000,000	345,000,000
Other letters of credit
Off-balance sheet lending related-financial instruments, guarantees and other commitments (Numeric) [Abstract]
Contractual amount net of risk participations for other letters of credit	1,400,000,000	1,100,000,000
Collateral held relating to other letters of credit	1,748,000,000	2,127,000,000
Allowance for lending-related commitments	2,000,000	2,000,000
Standby and Other Letters of Credit [Member]
Off-balance sheet lending related-financial instruments, guarantees and other commitments (Numeric) [Abstract]
Standby and other letters of credit carrying values	688,000,000	707,000,000
Standby and other letters of credit allowance for lending-related commitments	316,000,000	347,000,000
Standby and other letters of credit fair value of the guarantee liability	372,000,000	360,000,000
Loans Sold With Recourse [Member]
Off-balance sheet lending related-financial instruments, guarantees and other commitments (Numeric) [Abstract]
Unpaid principal balance of loans sold with recourse	10,600,000,000	11,000,000,000
Carrying value	141,000,000	153,000,000
Allowance for lending-related commitments	141,000,000	153,000,000
Contractual amount	10,624,000,000	10,982,000,000
Minimum [Member] \| Mortgage Repurchase Liability [Member]
Off-balance sheet lending related-financial instruments, guarantees and other commitments (Numeric) [Abstract]
Loss Contingency Range of Possible Loss Portion, Minimum	0
Maximum [Member] \| Mortgage Repurchase Liability [Member]
Off-balance sheet lending related-financial instruments, guarantees and other commitments (Numeric) [Abstract]
Loss Contingency Range of Possible Loss Portion, Minimum	2,200,000,000
Mortgage Repurchase Liability [Member]
Off-balance sheet lending related-financial instruments, guarantees and other commitments (Numeric) [Abstract]
Allowance for lending-related commitments	$ 3,631,000,000	$ 3,285,000,000