<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.22.4</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>67</ContextCount>
  <ElementCount>75</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>54</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>2</UnitCount>
  <MyReports>
    <Report instance="d484806d497.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>000000 - Document - Document and Entity Information {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/role/DocumentDocumentandEntityInformationElements</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory></MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="d484806d497.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>000019 - Disclosure - Risk/Return Detail Data {Elements} - JPMorgan Equity Income Fund (R2 R3 R4 R5 R6 Shares)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/role/DisclosureRiskReturnDetailDataElementsJPMorganEquityIncomeFundR2R3R4R5R6Shares</Role>
      <ShortName>Risk/Return Detail Data- JPMorgan Equity Income Fund (R2 R3 R4 R5 R6 Shares)</ShortName>
      <MenuCategory></MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="d484806d497.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>000029 - Disclosure - Risk/Return Detail Data {Elements} - JPMorgan Equity Index Fund (R6 Shares)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/role/DisclosureRiskReturnDetailDataElementsJPMorganEquityIndexFundR6Shares</Role>
      <ShortName>Risk/Return Detail Data- JPMorgan Equity Index Fund (R6 Shares)</ShortName>
      <MenuCategory></MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="d484806d497.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>000039 - Disclosure - Risk/Return Detail Data {Elements} - JPMorgan Large Cap Growth Fund (R2 R3 R4 R5 R6 Shares)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/role/DisclosureRiskReturnDetailDataElementsJPMorganLargeCapGrowthFundR2R3R4R5R6Shares</Role>
      <ShortName>Risk/Return Detail Data- JPMorgan Large Cap Growth Fund (R2 R3 R4 R5 R6 Shares)</ShortName>
      <MenuCategory></MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="d484806d497.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>000049 - Disclosure - Risk/Return Detail Data {Elements} - JPMorgan Large Cap Value Fund (R2 R3 R4 R5 R6 Shares)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/role/DisclosureRiskReturnDetailDataElementsJPMorganLargeCapValueFundR2R3R4R5R6Shares</Role>
      <ShortName>Risk/Return Detail Data- JPMorgan Large Cap Value Fund (R2 R3 R4 R5 R6 Shares)</ShortName>
      <MenuCategory></MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="d484806d497.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>000059 - Disclosure - Risk/Return Detail Data {Elements} - JPMorgan Mid Cap Growth Fund (R2 R3 R4 R5 R6 Shares)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/role/DisclosureRiskReturnDetailDataElementsJPMorganMidCapGrowthFundR2R3R4R5R6Shares</Role>
      <ShortName>Risk/Return Detail Data- JPMorgan Mid Cap Growth Fund (R2 R3 R4 R5 R6 Shares)</ShortName>
      <MenuCategory></MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="d484806d497.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>000069 - Disclosure - Risk/Return Detail Data {Elements} - JPMorgan Small Cap Growth Fund (R2 R3 R4 R5 R6 Shares)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/role/DisclosureRiskReturnDetailDataElementsJPMorganSmallCapGrowthFundR2R3R4R5R6Shares</Role>
      <ShortName>Risk/Return Detail Data- JPMorgan Small Cap Growth Fund (R2 R3 R4 R5 R6 Shares)</ShortName>
      <MenuCategory></MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="d484806d497.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>000079 - Disclosure - Risk/Return Detail Data {Elements} - JPMorgan Small Cap Value Fund (R2 R3 R4 R5 R6 Shares)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/role/DisclosureRiskReturnDetailDataElementsJPMorganSmallCapValueFundR2R3R4R5R6Shares</Role>
      <ShortName>Risk/Return Detail Data- JPMorgan Small Cap Value Fund (R2 R3 R4 R5 R6 Shares)</ShortName>
      <MenuCategory></MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="d484806d497.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>000089 - Disclosure - Risk/Return Detail Data {Elements} - JPMorgan SMID Cap Equity Fund (R3 R4 R6 Shares)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/role/DisclosureRiskReturnDetailDataElementsJPMorganSMIDCapEquityFundR3R4R6Shares</Role>
      <ShortName>Risk/Return Detail Data- JPMorgan SMID Cap Equity Fund (R3 R4 R6 Shares)</ShortName>
      <MenuCategory></MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="d484806d497.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>040000 - Disclosure - Risk/Return Detail Data {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/rr/role/RiskReturnDetailData</Role>
      <ShortName>Risk/Return Detail Data</ShortName>
      <MenuCategory></MenuCategory>
      <Position>10</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <Logs>
    <Log type="Warning">[ix-0514-Hidden-Fact-Eligible-For-Transform] WARN: 34 fact(s) appearing in ix:hidden were eligible for transformation: rr:Component1OtherExpensesOverAssets, rr:Component2OtherExpensesOverAssets, rr:DistributionAndService12b1FeesOverAssets, rr:ExpensesOverAssets, rr:ManagementFeesOverAssets, rr:OtherExpensesOverAssets, rr:ProspectusDate -  d484806d497.htm 9</Log>
  </Logs>
  <InputFiles>
    <File doctype="497" original="d484806d497.htm">d484806d497.htm</File>
    <File>jpmt2-20230310.xsd</File>
    <File>jpmt2-20230310_cal.xml</File>
    <File>jpmt2-20230310_def.xml</File>
    <File>jpmt2-20230310_lab.xml</File>
    <File>jpmt2-20230310_pre.xml</File>
  </InputFiles>
  <SupplementalFiles>
    <File>g484806divfl.jpg</File>
    <File>g484806effr6.jpg</File>
    <File>g484806eifr5.jpg</File>
    <File>g484806epir5r6.jpg</File>
    <File>g484806eqifi.jpg</File>
    <File>g484806fsc_proslogo.gif</File>
    <File>g484806gafr5.jpg</File>
    <File>g484806gaifr5.jpg</File>
    <File>g484806hefr5.jpg</File>
    <File>g484806igfr5.jpg</File>
    <File>g484806imcfr6.jpg</File>
    <File>g484806ivfr5.jpg</File>
    <File>g484806lcgfr5.jpg</File>
    <File>g484806lcvfr5.jpg</File>
    <File>g484806logo_back.gif</File>
    <File>g484806logo_front.gif</File>
    <File>g484806mcefr6.jpg</File>
    <File>g484806mcgfr2.jpg</File>
    <File>g484806mcvfr2.jpg</File>
    <File>g484806scbfir6.jpg</File>
    <File>g484806sccfr5.jpg</File>
    <File>g484806scefr5.jpg</File>
    <File>g484806scgfr2.jpg</File>
    <File>g484806scvfr6.jpg</File>
    <File>g484806usefr5.jpg</File>
    <File>g484806uslccpfr5.jpg</File>
    <File>g484806usreefr6.jpg</File>
    <File>g484806usscfr6.jpg</File>
    <File>g484806usslf.jpg</File>
    <File>g484806vafr.jpg</File>
  </SupplementalFiles>
  <BaseTaxonomies>
    <BaseTaxonomy items="8">http://xbrl.sec.gov/dei/2021</BaseTaxonomy>
    <BaseTaxonomy items="979">http://xbrl.sec.gov/rr/2021</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
