1.0.0.3falseConsolidated statements of cash flows (Parenthetical) (USD $)In Billions, except Share data in Millionsfalse1$falsefalseSharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso4217020us-gaap_StatementOfCashFlowsAbstractus-gaaptruenadurationstringNo definition available.falsefalsefalsefalsefalsetruefalsefalsefalse1falsefalse00falsefalseNo definition available.false31jpm_NoncashAssetsAcquiredjpmfalsedebitinstantmonetaryThe net book value of a nonmonetary asset transferred or exchanged in connection with the acquisition of a business or asset...falsefalsefalsefalsefalsefalsefalsefalsefalse1truetrue288200000000288.2falsefalseThe net book value of a nonmonetary asset transferred or exchanged in connection with the acquisition of a business or asset in a noncash transaction. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transacation not resulting in cash receipts or cash payments in the period. Nonmonetary assets and liabilities are assets and liabilities that will not result in cash receipts or cash payments in the future.No authoritative reference available.false41jpm_LiabilitiesAssumedInMergerjpmfalsedebitinstantmonetaryThe net book value of a nonmonetary asset transferred or exchanged in connection with the acquisition of a business or asset...falsefalsefalsefalsefalsefalsefalsefalsefalse1falsetrue287700000000287.7falsefalseThe net book value of a nonmonetary asset transferred or exchanged in connection with the acquisition of a business or asset in a noncash transaction. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transacation not resulting in cash receipts or cash payments in the period. Nonmonetary assets and liabilities are assets and liabilities that will not result in cash receipts or cash payments in the future.No authoritative reference available.false51us-gaap_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssuedus-gaaptruenainstantsharesNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalse1falsetrue2600000026falsefalseNo definition available.No authoritative reference available.false61jpm_CommonStockIssuedInConnectionWithMergerjpmfalsecreditinstantmonetaryCommon stock issued in connection with Bear Stearns Merger.falsefalsefalsefalsefalsefalsefalsefalsefalse1falsetrue12000000001.2falsefalseCommon stock issued in connection with Bear Stearns Merger.No authoritative reference available.false71jpm_NoncashAssetsAcquiredInAcquisitionjpmfalsedebitinstantmonetaryThe net book value of a nonmonetary asset transferred or exchanged in connection with the acquisition of a business or asset...falsefalsefalsefalsefalsefalsefalsefalsefalse1falsetrue260300000000260.3falsefalseThe net book value of a nonmonetary asset transferred or exchanged in connection with the acquisition of a business or asset in a noncash transaction. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transacation not resulting in cash receipts or cash payments in the period. Nonmonetary assets and liabilities are assets and liabilities that will not result in cash receipts or cash payments in the future.No authoritative reference available.false81jpm_LiabilitiesAssumedInAcquisitionjpmfalsecreditinstantmonetaryThe net book value of a nonmonetary asset transferred or exchanged in connection with the acquisition of a business or asset...falsefalsefalsefalsefalsefalsefalsefalsefalse1truetrue260100000000260.1falsefalseThe net book value of a nonmonetary asset transferred or exchanged in connection with the acquisition of a business or asset in a noncash transaction. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers that portion of the transacation not resulting in cash receipts or cash payments in the period. Nonmonetary assets and liabilities are assets and liabilities that will not result in cash receipts or cash payments in the future.No authoritative reference available.falsefalse17falseHundredMillionsMillionsUnKnownfalsetrue