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This item represents the average yield on debt securities which are expected to mature after five through ten years of the balance sheet date and which are categorized neither as held-to-maturity nor trading securities.

No definition available.

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This item represents the average yield on debt securities which are expected to mature after one through five years of the balance sheet date and which are categorized neither as held-to-maturity nor trading securities.

No definition available.

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This item represents the average yield on debt securities which are expected to mature after ten years of the balance sheet date and which are categorized neither as held-to-maturity nor trading securities.

No definition available.

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This item represents the average yield on debt securities which are expected to mature within one year of the balance sheet date and which are categorized neither as held-to-maturity nor trading securities.

No definition available.

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Available For Sale Securities, Debt Maturities, Average Yield, Single Maturity Date [Abstract]

No definition available.

Name:	jpm_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAverageYieldAbstract
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Available-for-sale Securities and Held-to-maturity Securities Exceeding Ten Percent of Total Stockholderes' Equity, Fair Value

No definition available.

Name:	jpm_AvailableforsaleSecuritiesandHeldtomaturitySecuritiesExceedingTenPercentofTotalStockholderesEquityFairValue
Namespace Prefix:	jpm_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Available-for-sale Securities and Held-to-maturity Securities Exceeding Ten Percent of Total Stockholders' Equity, Amortized Cost Basis

No definition available.

Name:	jpm_AvailableforsaleSecuritiesandHeldtomaturitySecuritiesExceedingTenPercentofTotalStockholdersEquityAmortizedCostBasis
Namespace Prefix:	jpm_
Data Type:	xbrli:monetaryItemType
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Due period of mortgage-backed securities and collateralized mortgage obligations.

No definition available.

Name:	jpm_DuePeriodOfMortgageBackedSecuritiesAndCollateralizedMortgageObligations
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Data Type:	xbrli:durationItemType
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This item represents average yield on the total of all debt securities grouped by maturity dates, at fair value, which are categorized as held-to-maturity.

No definition available.

Name:	jpm_HeldToMaturitySecuritiesDebtMaturitiesAverageYield
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Data Type:	num:percentItemType
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This item represents the average yield on debt securities with maturities after five through ten years as of the balance sheet date and which are categorized as held-to-maturity.

No definition available.

Name:	jpm_HeldToMaturitySecuritiesDebtMaturitiesAverageYieldAfterFiveThroughTenYears
Namespace Prefix:	jpm_
Data Type:	num:percentItemType
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This item represents the average yield on debt securities with maturities expected to mature after one through five years from the balance sheet date and which are categorized as held-to-maturity.

No definition available.

Name:	jpm_HeldToMaturitySecuritiesDebtMaturitiesAverageYieldAfterOneThroughFiveYears
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Data Type:	num:percentItemType
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This item represents the average yield on debt securities with maturities due after ten years as of the balance sheet date and which are categorized as held-to-maturity.

No definition available.

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This item represents the average yield on debt securities with maturities within one year of the balance sheet date and which are categorized as held-to-maturity.

No definition available.

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Held-to-maturity Securities, Debt Maturities, Single Maturity Date, Average Yield [Abstract]

No definition available.

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Supplemental Information [Abstract]

No definition available.

Name:	jpm_SupplementalInformationAbstract
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This item represents the estimated duration, which reflects anticipated future prepayments based on a consensus of dealers in the market, on U.S. non-agency residential collateralized mortgage obligations.

No definition available.

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This item represents the estimated duration, which reflects anticipated future prepayments based on a consensus of dealers in the market, on residential collateralized mortgage obligations issued by US Government Agencies, such as the Government National Mortgage Association (GNMA or Ginnie Mae), and US Government-sponsored Enterprises, such as the Federal Home Loan Mortgage Corporation (FHLMC or Freddie Mac), Federal National Mortgage Association (FNMA or Fannie Mae), and the Federal Home Loan Bank (FHLB).

No definition available.

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This item represents the estimated duration, which reflects anticipated future prepayments based on a consensus of dealers in the market, on residential mortgage-backed securities issued by US Government Agencies, such as the Government National Mortgage Association (GNMA or Ginnie Mae), and US Government-sponsored Enterprises, such as the Federal Home Loan Mortgage Corporation (FHLMC or Freddie Mac), Federal National Mortgage Association (FNMA or Fannie Mae), and the Federal Home Loan Bank (FHLB).

No definition available.

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in next rolling fiscal year following latest fiscal year. For interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

No definition available.

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Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in next rolling fiscal year following latest fiscal year. For interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

No definition available.

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing after rolling tenth fiscal year following latest fiscal year. For interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

No definition available.

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Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing after rolling tenth fiscal year following latest fiscal year. For interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

No definition available.

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Amortized cost of investment in debt security, measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in rolling sixth through tenth fiscal year following latest fiscal year. For interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

No definition available.

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Fair value of investment in debt security, measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in rolling sixth through tenth fiscal year following latest fiscal year. For interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

No definition available.

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in next rolling fiscal year through fifth year following latest fiscal year. For interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

No definition available.

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Fair value of investment in debt security, measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in next rolling fiscal year through fifth year following latest fiscal year. For interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

No definition available.

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No definition available.

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No definition available.

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109979856&loc=d3e26610-111562

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
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-Subparagraph (aa)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563

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Amount of investment in debt security measured at amortized cost (held-to-maturity).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109979856&loc=d3e26610-111562

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
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-Paragraph 5
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-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563

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Fair value of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in next rolling fiscal year following latest fiscal year. For interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

No definition available.

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Fair value of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing after tenth rolling fiscal year following latest fiscal year. For interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

No definition available.

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Fair value of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in sixth through tenth rolling fiscal year following latest fiscal year. For interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

No definition available.

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Fair value of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in second through fifth rolling fiscal year following latest fiscal year. For interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

No definition available.

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No definition available.

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No definition available.

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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (aa)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563

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Amount of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in next rolling fiscal year following latest fiscal year. For interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

No definition available.

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Amount of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing after rolling tenth fiscal year following latest fiscal year. For interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

No definition available.

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Amount of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in sixth through tenth rolling fiscal year following latest fiscal year. For interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

No definition available.

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Amount of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in second through fifth rolling fiscal year following latest fiscal year. For interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

No definition available.

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