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

No definition available.

Name:	jpm_HomeEquityLineOfCreditOpenEndedRevolvingPeriod
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Data Type:	xbrli:durationItemType
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Period Type:	duration

- Definition

Originated or purchased loans held-for-investment, other than PCI loans, are measured at the principal amount outstanding, net of the following: allowance for loan losses; net charge-offs; interest applied to principal (for loans accounted for on the cost recovery method); unamortized discounts and premiums; and net deferred loan fees or costs.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- 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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Balance Type:	na
Period Type:	duration

- Details

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- Details

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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

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Balance Type:
Period Type:

- Details

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Data Type:	na
Balance Type:
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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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- Details

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Period Type:

Loans - Consumer, Excluding Credit Card Loans, PCI Delinquency Statistics (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Loans and Leases Receivable Disclosure [Line Items]
Total retained loans	$ 832,792	$ 747,508	$ 724,177
Consumer, excluding credit card
Loans and Leases Receivable Disclosure [Line Items]
Total retained loans	344,355	294,979	$ 288,449
Consumer, excluding credit card \| Home equity \| Senior lien
Loans and Leases Receivable Disclosure [Line Items]
Total retained loans	$ 14,848	$ 16,367
Total 30 plus day delinquency rate	3.84%	3.89%
Consumer, excluding credit card \| Home equity \| Junior lien
Loans and Leases Receivable Disclosure [Line Items]
Total retained loans	$ 30,711	$ 36,375
Total 30 plus day delinquency rate	2.25%	2.20%
Consumer, excluding credit card \| Residential real estate - PCI \| Home equity
Loans and Leases Receivable Disclosure [Line Items]
Total retained loans	$ 14,989	$ 17,095
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	23.00%
Consumer, excluding credit card \| Residential real estate - PCI \| Home equity \| Junior lien
Loans and Leases Receivable Disclosure [Line Items]
Total retained loans	$ 11,834	$ 13,851
Total 30 plus day delinquency rate	4.35%	6.55%
Consumer, excluding credit card \| Residential real estate - PCI \| HELOCs \| Junior lien \| Within the revolving period
Loans and Leases Receivable Disclosure [Line Items]
Total retained loans	$ 5,000	$ 8,972
Total 30 plus day delinquency rate	4.10%	6.42%
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]
Total retained loans	$ 6,252	$ 4,143
Total 30 plus day delinquency rate	4.46%	6.42%
Consumer, excluding credit card \| Residential real estate - PCI \| HELOANs \| Junior lien
Loans and Leases Receivable Disclosure [Line Items]
Total retained loans	$ 582	$ 736
Total 30 plus day delinquency rate	5.33%	8.83%