1.0.0.3 false Consolidated statements of cash flows (Parenthetical) (USD $) In Billions, except Share data in Millions false 1 $ false false Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 2 0 us-gaap_StatementOfCashFlowsAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false No definition available. false 3 1 jpm_NoncashAssetsAcquired jpm false debit instant monetary The net book value of a nonmonetary asset transferred or exchanged in connection with the acquisition of a business or asset... false false false false false false false false false 1 true true 288200000000 288.2 false false The 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. false 4 1 jpm_LiabilitiesAssumedInMerger jpm false debit instant monetary The net book value of a nonmonetary asset transferred or exchanged in connection with the acquisition of a business or asset... false false false false false false false false false 1 false true 287700000000 287.7 false false The 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. false 5 1 us-gaap_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued us-gaap true na instant shares No definition available. false false false false false false false false false 1 false true 26000000 26 false false No definition available. No authoritative reference available. false 6 1 jpm_CommonStockIssuedInConnectionWithMerger jpm false credit instant monetary Common stock issued in connection with Bear Stearns Merger. false false false false false false false false false 1 false true 1200000000 1.2 false false Common stock issued in connection with Bear Stearns Merger. No authoritative reference available. false 7 1 jpm_NoncashAssetsAcquiredInAcquisition jpm false debit instant monetary The net book value of a nonmonetary asset transferred or exchanged in connection with the acquisition of a business or asset... false false false false false false false false false 1 false true 260300000000 260.3 false false The 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. false 8 1 jpm_LiabilitiesAssumedInAcquisition jpm false credit instant monetary The net book value of a nonmonetary asset transferred or exchanged in connection with the acquisition of a business or asset... false false false false false false false false false 1 true true 260100000000 260.1 false false The 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. false false 1 7 false HundredMillions Millions UnKnown false true