Aggregate notional 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

-Section 13

-Sentence Column B

+ Details

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Namespace Prefix:	invest_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

- Definition

This element represents the payables portion of types of derivative financial instruments qualifying 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).

+ References

No definition available.

+ 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 qualifying 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).

+ References

No definition available.

+ Details

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

- Definition

Derivatives maximum exposure to loss.

+ References

No definition available.

+ Details

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

- Definition

Derivatives Qualifying as Guarantees [Abstract]

+ References

No definition available.

+ Details

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

- Definition

The contractual amount of off-balance sheet lending-related financial instruments (e.g., commitments and guarantees), which represents the maximum possible credit risk should the counterparty draw upon the commitment or the entity be required to fulfill its obligation under the guarantee, and the counterparty subsequently fail to perform according to the terms of the contract.

+ References

No definition available.

+ Details

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

- Definition

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

+ References

No definition available.

+ Details

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

- Definition

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

+ References

No definition available.

+ 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-related commitments plus the fair value of the guarantee liability.

+ References

No definition available.

+ Details

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

- Definition

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

+ References

No definition available.

+ Details

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

- Definition

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.

+ References

No definition available.

+ Details

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

- Definition

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.

+ References

No definition available.

+ Details

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

- Definition

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

+ References

No definition available.

+ Details

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

- 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 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

Maximum potential amount of future payments (undiscounted) 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.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph (b)(1)

-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248

+ Details

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Balance Type:	credit
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 FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 09

-Article 12

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Balance Type:	credit
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Off-balance sheet lending-related financial instruments, guarantees and other commitments - Standby Letters of Credit and Other Financial Guarantees (Details) - USD ($) $ in Millions	Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2013
Standby letters of credit and other financial guarantees and other letters of credit [Abstract]
Total lending-related commitments	$ 940,786		$ 950,997	$ 1,057,204
Allowance for lending-related commitments	184	$ 231	275	$ 391	$ 436	$ 681
Derivatives qualifying as guarantees
Notional amount on stable value contracts	52,018,000		63,662,000
Standby and Other Letters of Credit
Standby letters of credit and other financial guarantees and other letters of credit [Abstract]
Carrying values of standby and other letters of credit	775		789
Allowance for lending-related commitments	335		235
Guarantee liability and corresponding asset	440		554
Standby letters of credit and other financial guarantees
Standby letters of credit and other financial guarantees and other letters of credit [Abstract]
Investment-grade	60,841		66,856
Noninvestment-grade	24,427		23,018
Total lending-related commitments	85,268		89,874
Allowance for lending-related commitments	334		234
Commitments with collateral	36,148		39,726
Other letters of credit
Standby letters of credit and other financial guarantees and other letters of credit [Abstract]
Investment-grade	3,362		3,476
Noninvestment-grade	645		855
Total lending-related commitments	4,007		4,331
Allowance for lending-related commitments	1		1
Commitments with collateral	1,126		1,509
Derivatives qualifying as guarantees
Standby letters of credit and other financial guarantees and other letters of credit [Abstract]
Guarantee liability and corresponding asset	258		80
Derivatives qualifying as guarantees
Total notional value of derivatives the Firm deems guarantees	52,189		53,589
Notional amount on stable value contracts	28,200		27,500
Maximum exposure to loss	3,000		2,900
Derivative qualifying as guarantees payables	279		102
Derivative qualifying as guarantees receivables	$ 21		$ 22