Percentage of recorded investment in retained loans that have estimated refreshed FICO scores of less than 660.

No definition available.

Name:	jpm_PercentageOfLoansWithFicoScoresLessThan660ToTotalRetainedLoans
Namespace Prefix:	jpm_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage of recorded investment in retained loans that have estimated refreshed FICO scores equal or greater than 660.

+ References

No definition available.

+ Details

Name:	jpm_PercentageOfLoansWithFicoScoresOf660OrGreaterToTotalRetainedLoans
Namespace Prefix:	jpm_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage Of Loans With No FICO Score Available

+ References

No definition available.

+ Details

Name:	jpm_PercentageOfLoansWithNoFICOScoreAvailable
Namespace Prefix:	jpm_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 20
-Name Accounting Standards Codification
-Section 40
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481628/310-20-40-7

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481990/310-10-45-2

+ Details

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

- Definition

Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-5

+ Details

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

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CreditCardReceivablesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=stpr_CA
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=stpr_TX
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=stpr_NY
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=stpr_FL
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=stpr_IL
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=stpr_NJ
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=stpr_CO
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=stpr_OH
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=stpr_PA
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=stpr_AZ
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=jpm_OtherGeographicalAreasMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Loans - Credit Card Loan Portfolio, Other Credit Quality Indicators (Details) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024	Jun. 30, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	$ 1,345,473	$ 1,299,590	$ 1,273,047
Credit card
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	$ 232,943	$ 232,860
Percentage of portfolio based on carrying value with estimated refreshed FICO scores, Equal to or greater than 660	84.70%	85.50%
Percentage of portfolio based on carrying value with estimated refreshed FICO scores, Less than 660	15.20%	14.30%
Percentage of portfolio based on carrying value with estimated refreshed FICO scores, No FICO available	0.10%	0.20%
Credit card \| California
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	$ 36,331	$ 36,385
Credit card \| Texas
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	24,568	24,423
Credit card \| New York
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	18,551	18,525
Credit card \| Florida
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	17,300	17,236
Credit card \| Illinois
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	12,509	12,442
Credit card \| New Jersey
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	9,652	9,644
Credit card \| Colorado
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	7,082	6,962
Credit card \| Ohio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	6,924	6,976
Credit card \| Pennsylvania
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	6,490	6,558
Credit card \| Arizona
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	5,814	5,796
Credit card \| All other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total retained loans	$ 87,722	$ 87,913