In general, the period of time that home equity lines of credit are open-ended revolving loans.

No definition available.

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Namespace Prefix:	jpm_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

This item represents the percentage of loans 30 plus days past due as compared to total retained loans.

+ References

No definition available.

+ Details

Name:	jpm_PercentageOfLoansThirtyPlusDaysPastDueToTotalRetainedLoans
Namespace Prefix:	jpm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The percentage of the financing receivables that consists of senior liens.

+ References

No definition available.

+ Details

Name:	jpm_PercentageOfSeniorLiensToTotalFinancingReceivables
Namespace Prefix:	jpm_
Data Type:	num: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

No definition available.

+ Details

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

- Definition

Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=65884687&loc=d3e4428-111522

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5074-111524

+ Details

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

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=jpm_ConsumerExcludingCreditCardLoanPortfolioSegmentMember
Namespace Prefix:
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Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=jpm_HomeEquityLoanandHomeEquityLineofCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LienCategoryAxis=us-gaap_JuniorLienMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_HomeEquityLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ReceivablesAcquiredWithDeterioratedCreditQualityAxis=us-gaap_ReceivablesAcquiredWithDeterioratedCreditQualityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LienCategoryAxis=us-gaap_SeniorLienMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_HomeEquityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=jpm_NonRevolvingCreditFacilityMember
Namespace Prefix:
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Period Type:

Loans - Consumer, Excluding Credit Card Loans, PCI Delinquency Statistics (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 889,907	$ 832,792	$ 747,508
Consumer, excluding credit card
Loans and Leases Receivable Disclosure [Line Items]
Loans	364,406	344,355	$ 294,979
Consumer, excluding credit card \| Home equity
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 39,063	$ 45,559
Total 30 plus day delinquency rate	2.87%	2.77%
Consumer, excluding credit card \| Home equity \| Junior lien
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 25,437	$ 30,711
Total 30 plus day delinquency rate	2.32%	2.25%
Consumer, excluding credit card \| HELOANs \| Junior lien
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 1,861	$ 2,409
Total 30 plus day delinquency rate	2.85%	3.03%
Consumer, excluding credit card \| Residential real estate - PCI \| Home equity
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 12,902	$ 14,989
Consumer, excluding credit card \| Residential real estate - PCI \| Home equity \| Senior lien
Loans and Leases Receivable Disclosure [Line Items]
Percentage of senior liens to total financing receivables	24.00%
Consumer, excluding credit card \| Residential real estate - PCI \| Home equity \| Junior lien
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 10,043	$ 11,834
Total 30 plus day delinquency rate	4.01%	4.35%
Consumer, excluding credit card \| Residential real estate - PCI \| HELOCs \| Junior lien \| Within the revolving period
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 2,126	$ 5,000
Total 30 plus day delinquency rate	3.67%	4.10%
Open-ended revolving period	10 years
Consumer, excluding credit card \| Residential real estate - PCI \| HELOCs \| Junior lien \| Beyond the revolving period
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 7,452	$ 6,252
Total 30 plus day delinquency rate	4.03%	4.46%
Consumer, excluding credit card \| Residential real estate - PCI \| HELOANs \| Junior lien
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 465	$ 582
Total 30 plus day delinquency rate	5.38%	5.33%