Cash and securities pledged with clearing organizations for the benefit of customers.

No definition available.

Name:	jpm_CashAndSecuritiesPledgedWithClearingOrganizationsForTheBenefitOfCustomers
Namespace Prefix:	jpm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Federal law imposes a restriction which prohibits the parent entity and certain of its affilliates from borrowing from banking subsidiaries unless the loans are secured in specified amounts. This concept holds the limit for the aggregate amount of all such secured loans as a percentage of the banking subsidiary's total capital.

+ References

No definition available.

+ Details

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Namespace Prefix:	jpm_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Federal law imposes a restriction which prohibits the parent entity and certain of its affiliates from borrowing from banking subsidiaries unless the loans are secured in specified amounts. This concept holds the general limit for such a secured loan as a percentage of the banking subsidiary's total capital.

+ References

No definition available.

+ Details

Name:	jpm_FederalRestrictionOnSecuredBorrowingsFromSubsidiariesPerLoanPortionOfSubsidiaryTotalCapitalPercentage
Namespace Prefix:	jpm_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

RestrictionsOnCashAndIntercompanyFundsTransfers [Line Items]

+ References

No definition available.

+ Details

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

- References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Securities deposited in a special reserve account for the exclusive benefit of customers pursuant to SEC Regulations.

+ References

No definition available.

+ Details

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

- Definition

Amount of dividends that can be declared or paid without approval of regulatory agency.

+ References

No definition available.

+ Details

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

- Details

Name:	dei_LegalEntityAxis=jpm_BankAndBankHoldingCompanySubsidiariesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
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Restricted Cash, Other Restricted Assets and Intercompany Funds Transfers - Narrative (Details) - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2024	Jan. 01, 2025	Dec. 31, 2023
Cash and Cash Equivalents [Abstract]
Cash and securities pledged with clearing organizations for benefit of customers	$ 40.7		$ 40.5
Fair value of securities restricted in relation to customer activity	$ 26.8		$ 20.5
Restrictions on Cash and Intercompany Funds Transfers [Line Items]
Percentage of total capital loans limited to	10.00%
Percentage of total capital (limited to) for aggregate covered transactions	20.00%
Bank and Bank Holding Company Subsidiaries \| Subsequent Event
Restrictions on Cash and Intercompany Funds Transfers [Line Items]
Aggregate dividends payable		$ 15.5