<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.26.3</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>484</ContextCount>
  <ElementCount>66</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>103</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>2</UnitCount>
  <MyReports>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>010000 - Disclosure - Form N-1A Cover</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/rr/role/N1aCover</Role>
      <ShortName>Form N-1A Cover</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>010004 - Disclosure - Investment Strategy</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/rr/role/InvestmentStrategy</Role>
      <ShortName>Investment Strategy</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>1010000 - Disclosure - Fundamental Data Science Large Core ETF N-1A Cover</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/10/role/N1aCover</Role>
      <ShortName>Fundamental Data Science Large Core ETF N-1A Cover</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>1010002 - Disclosure - Fundamental Data Science Large Core ETF Investment Objectives and Goals</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/10/role/RiskReturn</Role>
      <ShortName>Fundamental Data Science Large Core ETF Investment Objectives and Goals</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>1010003 - Disclosure - Fundamental Data Science Large Core ETF Fees and Expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/10/role/FeesAndExpenses</Role>
      <ShortName>Fundamental Data Science Large Core ETF Fees and Expenses</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>1010004 - Disclosure - Fundamental Data Science Large Core ETF Investment Strategy</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/10/role/InvestmentStrategy</Role>
      <ShortName>Fundamental Data Science Large Core ETF Investment Strategy</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>1010005 - Disclosure - Fundamental Data Science Large Core ETF Investment Risks</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/10/role/InvestmentRisks</Role>
      <ShortName>Fundamental Data Science Large Core ETF Investment Risks</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>1010006 - Disclosure - Fundamental Data Science Large Core ETF Performance Management</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/10/role/PerformanceManagement</Role>
      <ShortName>Fundamental Data Science Large Core ETF Performance Management</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>1020020 - Disclosure - Fundamental Data Science Large Core ETF Annual Fund Operating Expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/10/role/OperatingExpensesData</Role>
      <ShortName>Fundamental Data Science Large Core ETF Annual Fund Operating Expenses</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>1020030 - Disclosure - Fundamental Data Science Large Core ETF Expense Example</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/10/role/ExpenseExample</Role>
      <ShortName>Fundamental Data Science Large Core ETF Expense Example</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>1020050 - Disclosure - Fundamental Data Science Large Core ETF Annual Total Returns</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/10/role/BarChartData</Role>
      <ShortName>Fundamental Data Science Large Core ETF Annual Total Returns</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>1020060 - Disclosure - Fundamental Data Science Large Core ETF Average Annual Total Returns</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/10/role/PerformanceTableData</Role>
      <ShortName>Fundamental Data Science Large Core ETF Average Annual Total Returns</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>110000 - Disclosure - Equity Focus ETF N-1A Cover</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/1/role/N1aCover</Role>
      <ShortName>Equity Focus ETF N-1A Cover</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>110002 - Disclosure - Equity Focus ETF Investment Objectives and Goals</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/1/role/RiskReturn</Role>
      <ShortName>Equity Focus ETF Investment Objectives and Goals</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>110003 - Disclosure - Equity Focus ETF Fees and Expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/1/role/FeesAndExpenses</Role>
      <ShortName>Equity Focus ETF Fees and Expenses</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>110004 - Disclosure - Equity Focus ETF Investment Strategy</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/1/role/InvestmentStrategy</Role>
      <ShortName>Equity Focus ETF Investment Strategy</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>110005 - Disclosure - Equity Focus ETF Investment Risks</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/1/role/InvestmentRisks</Role>
      <ShortName>Equity Focus ETF Investment Risks</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>110006 - Disclosure - Equity Focus ETF Performance Management</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/1/role/PerformanceManagement</Role>
      <ShortName>Equity Focus ETF Performance Management</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>1110000 - Disclosure - Fundamental Data Science Mid Core ETF N-1A Cover</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/11/role/N1aCover</Role>
      <ShortName>Fundamental Data Science Mid Core ETF N-1A Cover</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>1110002 - Disclosure - Fundamental Data Science Mid Core ETF Investment Objectives and Goals</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/11/role/RiskReturn</Role>
      <ShortName>Fundamental Data Science Mid Core ETF Investment Objectives and Goals</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>1110003 - Disclosure - Fundamental Data Science Mid Core ETF Fees and Expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/11/role/FeesAndExpenses</Role>
      <ShortName>Fundamental Data Science Mid Core ETF Fees and Expenses</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>1110004 - Disclosure - Fundamental Data Science Mid Core ETF Investment Strategy</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/11/role/InvestmentStrategy</Role>
      <ShortName>Fundamental Data Science Mid Core ETF Investment Strategy</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>1110005 - Disclosure - Fundamental Data Science Mid Core ETF Investment Risks</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/11/role/InvestmentRisks</Role>
      <ShortName>Fundamental Data Science Mid Core ETF Investment Risks</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>1110006 - Disclosure - Fundamental Data Science Mid Core ETF Performance Management</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/11/role/PerformanceManagement</Role>
      <ShortName>Fundamental Data Science Mid Core ETF Performance Management</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>1120020 - Disclosure - Fundamental Data Science Mid Core ETF Annual Fund Operating Expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/11/role/OperatingExpensesData</Role>
      <ShortName>Fundamental Data Science Mid Core ETF Annual Fund Operating Expenses</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>1120030 - Disclosure - Fundamental Data Science Mid Core ETF Expense Example</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/11/role/ExpenseExample</Role>
      <ShortName>Fundamental Data Science Mid Core ETF Expense Example</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>1120050 - Disclosure - Fundamental Data Science Mid Core ETF Annual Total Returns</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/11/role/BarChartData</Role>
      <ShortName>Fundamental Data Science Mid Core ETF Annual Total Returns</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>27</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>1120060 - Disclosure - Fundamental Data Science Mid Core ETF Average Annual Total Returns</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/11/role/PerformanceTableData</Role>
      <ShortName>Fundamental Data Science Mid Core ETF Average Annual Total Returns</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>28</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>120020 - Disclosure - Equity Focus ETF Annual Fund Operating Expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/1/role/OperatingExpensesData</Role>
      <ShortName>Equity Focus ETF Annual Fund Operating Expenses</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>29</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>120030 - Disclosure - Equity Focus ETF Expense Example</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/1/role/ExpenseExample</Role>
      <ShortName>Equity Focus ETF Expense Example</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>30</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>120050 - Disclosure - Equity Focus ETF Annual Total Returns</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/1/role/BarChartData</Role>
      <ShortName>Equity Focus ETF Annual Total Returns</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>31</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>120060 - Disclosure - Equity Focus ETF Average Annual Total Returns</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/1/role/PerformanceTableData</Role>
      <ShortName>Equity Focus ETF Average Annual Total Returns</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>32</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>1210000 - Disclosure - Fundamental Data Science Small Core ETF N-1A Cover</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/12/role/N1aCover</Role>
      <ShortName>Fundamental Data Science Small Core ETF N-1A Cover</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>33</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>1210002 - Disclosure - Fundamental Data Science Small Core ETF Investment Objectives and Goals</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/12/role/RiskReturn</Role>
      <ShortName>Fundamental Data Science Small Core ETF Investment Objectives and Goals</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>34</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>1210003 - Disclosure - Fundamental Data Science Small Core ETF Fees and Expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/12/role/FeesAndExpenses</Role>
      <ShortName>Fundamental Data Science Small Core ETF Fees and Expenses</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>35</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>1210004 - Disclosure - Fundamental Data Science Small Core ETF Investment Strategy</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/12/role/InvestmentStrategy</Role>
      <ShortName>Fundamental Data Science Small Core ETF Investment Strategy</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>36</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>1210005 - Disclosure - Fundamental Data Science Small Core ETF Investment Risks</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/12/role/InvestmentRisks</Role>
      <ShortName>Fundamental Data Science Small Core ETF Investment Risks</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>37</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>1210006 - Disclosure - Fundamental Data Science Small Core ETF Performance Management</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/12/role/PerformanceManagement</Role>
      <ShortName>Fundamental Data Science Small Core ETF Performance Management</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>38</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>1220020 - Disclosure - Fundamental Data Science Small Core ETF Annual Fund Operating Expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/12/role/OperatingExpensesData</Role>
      <ShortName>Fundamental Data Science Small Core ETF Annual Fund Operating Expenses</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>39</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>1220030 - Disclosure - Fundamental Data Science Small Core ETF Expense Example</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/12/role/ExpenseExample</Role>
      <ShortName>Fundamental Data Science Small Core ETF Expense Example</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>40</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>1220050 - Disclosure - Fundamental Data Science Small Core ETF Annual Total Returns</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/12/role/BarChartData</Role>
      <ShortName>Fundamental Data Science Small Core ETF Annual Total Returns</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>41</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>1220060 - Disclosure - Fundamental Data Science Small Core ETF Average Annual Total Returns</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/12/role/PerformanceTableData</Role>
      <ShortName>Fundamental Data Science Small Core ETF Average Annual Total Returns</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>42</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>1310000 - Disclosure - Nasdaq Equity Premium Income ETF N-1A Cover</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/13/role/N1aCover</Role>
      <ShortName>Nasdaq Equity Premium Income ETF N-1A Cover</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>43</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>1310002 - Disclosure - Nasdaq Equity Premium Income ETF Investment Objectives and Goals</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/13/role/RiskReturn</Role>
      <ShortName>Nasdaq Equity Premium Income ETF Investment Objectives and Goals</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>44</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>1310003 - Disclosure - Nasdaq Equity Premium Income ETF Fees and Expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/13/role/FeesAndExpenses</Role>
      <ShortName>Nasdaq Equity Premium Income ETF Fees and Expenses</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>45</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>1310004 - Disclosure - Nasdaq Equity Premium Income ETF Investment Strategy</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/13/role/InvestmentStrategy</Role>
      <ShortName>Nasdaq Equity Premium Income ETF Investment Strategy</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>46</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>1310005 - Disclosure - Nasdaq Equity Premium Income ETF Investment Risks</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/13/role/InvestmentRisks</Role>
      <ShortName>Nasdaq Equity Premium Income ETF Investment Risks</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>47</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>1310006 - Disclosure - Nasdaq Equity Premium Income ETF Performance Management</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/13/role/PerformanceManagement</Role>
      <ShortName>Nasdaq Equity Premium Income ETF Performance Management</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>48</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>1320020 - Disclosure - Nasdaq Equity Premium Income ETF Annual Fund Operating Expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/13/role/OperatingExpensesData</Role>
      <ShortName>Nasdaq Equity Premium Income ETF Annual Fund Operating Expenses</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>49</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>1320030 - Disclosure - Nasdaq Equity Premium Income ETF Expense Example</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/13/role/ExpenseExample</Role>
      <ShortName>Nasdaq Equity Premium Income ETF Expense Example</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>50</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>1320050 - Disclosure - Nasdaq Equity Premium Income ETF Annual Total Returns</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/13/role/BarChartData</Role>
      <ShortName>Nasdaq Equity Premium Income ETF Annual Total Returns</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>51</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>1320060 - Disclosure - Nasdaq Equity Premium Income ETF Average Annual Total Returns</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/13/role/PerformanceTableData</Role>
      <ShortName>Nasdaq Equity Premium Income ETF Average Annual Total Returns</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>52</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>1410000 - Disclosure - U.S. Research Enhanced Large Cap ETF N-1A Cover</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/14/role/N1aCover</Role>
      <ShortName>U.S. Research Enhanced Large Cap ETF N-1A Cover</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>53</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>1410002 - Disclosure - U.S. Research Enhanced Large Cap ETF Investment Objectives and Goals</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/14/role/RiskReturn</Role>
      <ShortName>U.S. Research Enhanced Large Cap ETF Investment Objectives and Goals</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>54</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>1410003 - Disclosure - U.S. Research Enhanced Large Cap ETF Fees and Expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/14/role/FeesAndExpenses</Role>
      <ShortName>U.S. Research Enhanced Large Cap ETF Fees and Expenses</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>55</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>1410004 - Disclosure - U.S. Research Enhanced Large Cap ETF Investment Strategy</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/14/role/InvestmentStrategy</Role>
      <ShortName>U.S. Research Enhanced Large Cap ETF Investment Strategy</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>56</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>1410005 - Disclosure - U.S. Research Enhanced Large Cap ETF Investment Risks</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/14/role/InvestmentRisks</Role>
      <ShortName>U.S. Research Enhanced Large Cap ETF Investment Risks</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>57</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>1410006 - Disclosure - U.S. Research Enhanced Large Cap ETF Performance Management</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/14/role/PerformanceManagement</Role>
      <ShortName>U.S. Research Enhanced Large Cap ETF Performance Management</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>58</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>1420020 - Disclosure - U.S. Research Enhanced Large Cap ETF Annual Fund Operating Expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/14/role/OperatingExpensesData</Role>
      <ShortName>U.S. Research Enhanced Large Cap ETF Annual Fund Operating Expenses</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>59</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>1420030 - Disclosure - U.S. Research Enhanced Large Cap ETF Expense Example</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/14/role/ExpenseExample</Role>
      <ShortName>U.S. Research Enhanced Large Cap ETF Expense Example</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>60</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>1510000 - Disclosure - U.S. Tech Leaders ETF N-1A Cover</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/15/role/N1aCover</Role>
      <ShortName>U.S. Tech Leaders ETF N-1A Cover</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>61</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>1510002 - Disclosure - U.S. Tech Leaders ETF Investment Objectives and Goals</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/15/role/RiskReturn</Role>
      <ShortName>U.S. Tech Leaders ETF Investment Objectives and Goals</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>62</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>1510003 - Disclosure - U.S. Tech Leaders ETF Fees and Expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/15/role/FeesAndExpenses</Role>
      <ShortName>U.S. Tech Leaders ETF Fees and Expenses</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>63</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>1510004 - Disclosure - U.S. Tech Leaders ETF Investment Strategy</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/15/role/InvestmentStrategy</Role>
      <ShortName>U.S. Tech Leaders ETF Investment Strategy</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>64</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>1510005 - Disclosure - U.S. Tech Leaders ETF Investment Risks</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/15/role/InvestmentRisks</Role>
      <ShortName>U.S. Tech Leaders ETF Investment Risks</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>65</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>1510006 - Disclosure - U.S. Tech Leaders ETF Performance Management</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/15/role/PerformanceManagement</Role>
      <ShortName>U.S. Tech Leaders ETF Performance Management</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>66</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>1520020 - Disclosure - U.S. Tech Leaders ETF Annual Fund Operating Expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/15/role/OperatingExpensesData</Role>
      <ShortName>U.S. Tech Leaders ETF Annual Fund Operating Expenses</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>67</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>1520030 - Disclosure - U.S. Tech Leaders ETF Expense Example</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/15/role/ExpenseExample</Role>
      <ShortName>U.S. Tech Leaders ETF Expense Example</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>68</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>1520050 - Disclosure - U.S. Tech Leaders ETF Annual Total Returns</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/15/role/BarChartData</Role>
      <ShortName>U.S. Tech Leaders ETF Annual Total Returns</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>69</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R70.htm</HtmlFileName>
      <LongName>1520060 - Disclosure - U.S. Tech Leaders ETF Average Annual Total Returns</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/15/role/PerformanceTableData</Role>
      <ShortName>U.S. Tech Leaders ETF Average Annual Total Returns</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>70</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R71.htm</HtmlFileName>
      <LongName>210000 - Disclosure - Fundamental Data Science Large Growth ETF N-1A Cover</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/2/role/N1aCover</Role>
      <ShortName>Fundamental Data Science Large Growth ETF N-1A Cover</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>71</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R72.htm</HtmlFileName>
      <LongName>210002 - Disclosure - Fundamental Data Science Large Growth ETF Investment Objectives and Goals</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/2/role/RiskReturn</Role>
      <ShortName>Fundamental Data Science Large Growth ETF Investment Objectives and Goals</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>72</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R73.htm</HtmlFileName>
      <LongName>210003 - Disclosure - Fundamental Data Science Large Growth ETF Fees and Expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/2/role/FeesAndExpenses</Role>
      <ShortName>Fundamental Data Science Large Growth ETF Fees and Expenses</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>73</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R74.htm</HtmlFileName>
      <LongName>210004 - Disclosure - Fundamental Data Science Large Growth ETF Investment Strategy</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/2/role/InvestmentStrategy</Role>
      <ShortName>Fundamental Data Science Large Growth ETF Investment Strategy</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>74</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R75.htm</HtmlFileName>
      <LongName>210005 - Disclosure - Fundamental Data Science Large Growth ETF Investment Risks</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/2/role/InvestmentRisks</Role>
      <ShortName>Fundamental Data Science Large Growth ETF Investment Risks</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>75</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R76.htm</HtmlFileName>
      <LongName>210006 - Disclosure - Fundamental Data Science Large Growth ETF Performance Management</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/2/role/PerformanceManagement</Role>
      <ShortName>Fundamental Data Science Large Growth ETF Performance Management</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>76</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R77.htm</HtmlFileName>
      <LongName>220020 - Disclosure - Fundamental Data Science Large Growth ETF Annual Fund Operating Expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/2/role/OperatingExpensesData</Role>
      <ShortName>Fundamental Data Science Large Growth ETF Annual Fund Operating Expenses</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>77</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R78.htm</HtmlFileName>
      <LongName>220030 - Disclosure - Fundamental Data Science Large Growth ETF Expense Example</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/2/role/ExpenseExample</Role>
      <ShortName>Fundamental Data Science Large Growth ETF Expense Example</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>78</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R79.htm</HtmlFileName>
      <LongName>220050 - Disclosure - Fundamental Data Science Large Growth ETF Annual Total Returns</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/2/role/BarChartData</Role>
      <ShortName>Fundamental Data Science Large Growth ETF Annual Total Returns</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>79</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R80.htm</HtmlFileName>
      <LongName>220060 - Disclosure - Fundamental Data Science Large Growth ETF Average Annual Total Returns</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/2/role/PerformanceTableData</Role>
      <ShortName>Fundamental Data Science Large Growth ETF Average Annual Total Returns</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>80</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R81.htm</HtmlFileName>
      <LongName>310000 - Disclosure - Fundamental Data Science Large Value ETF N-1A Cover</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/3/role/N1aCover</Role>
      <ShortName>Fundamental Data Science Large Value ETF N-1A Cover</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>81</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R82.htm</HtmlFileName>
      <LongName>310002 - Disclosure - Fundamental Data Science Large Value ETF Investment Objectives and Goals</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/3/role/RiskReturn</Role>
      <ShortName>Fundamental Data Science Large Value ETF Investment Objectives and Goals</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>82</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R83.htm</HtmlFileName>
      <LongName>310003 - Disclosure - Fundamental Data Science Large Value ETF Fees and Expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/3/role/FeesAndExpenses</Role>
      <ShortName>Fundamental Data Science Large Value ETF Fees and Expenses</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>83</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R84.htm</HtmlFileName>
      <LongName>310004 - Disclosure - Fundamental Data Science Large Value ETF Investment Strategy</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/3/role/InvestmentStrategy</Role>
      <ShortName>Fundamental Data Science Large Value ETF Investment Strategy</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>84</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R85.htm</HtmlFileName>
      <LongName>310005 - Disclosure - Fundamental Data Science Large Value ETF Investment Risks</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/3/role/InvestmentRisks</Role>
      <ShortName>Fundamental Data Science Large Value ETF Investment Risks</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>85</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R86.htm</HtmlFileName>
      <LongName>310006 - Disclosure - Fundamental Data Science Large Value ETF Performance Management</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/3/role/PerformanceManagement</Role>
      <ShortName>Fundamental Data Science Large Value ETF Performance Management</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>86</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R87.htm</HtmlFileName>
      <LongName>320020 - Disclosure - Fundamental Data Science Large Value ETF Annual Fund Operating Expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/3/role/OperatingExpensesData</Role>
      <ShortName>Fundamental Data Science Large Value ETF Annual Fund Operating Expenses</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>87</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R88.htm</HtmlFileName>
      <LongName>320030 - Disclosure - Fundamental Data Science Large Value ETF Expense Example</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/3/role/ExpenseExample</Role>
      <ShortName>Fundamental Data Science Large Value ETF Expense Example</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>88</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R89.htm</HtmlFileName>
      <LongName>320050 - Disclosure - Fundamental Data Science Large Value ETF Annual Total Returns</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/3/role/BarChartData</Role>
      <ShortName>Fundamental Data Science Large Value ETF Annual Total Returns</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>89</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R90.htm</HtmlFileName>
      <LongName>320060 - Disclosure - Fundamental Data Science Large Value ETF Average Annual Total Returns</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/3/role/PerformanceTableData</Role>
      <ShortName>Fundamental Data Science Large Value ETF Average Annual Total Returns</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>90</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R91.htm</HtmlFileName>
      <LongName>410000 - Disclosure - Preferred and Income Securities ETF N-1A Cover</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/4/role/N1aCover</Role>
      <ShortName>Preferred and Income Securities ETF N-1A Cover</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>91</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R92.htm</HtmlFileName>
      <LongName>410002 - Disclosure - Preferred and Income Securities ETF Investment Objectives and Goals</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/4/role/RiskReturn</Role>
      <ShortName>Preferred and Income Securities ETF Investment Objectives and Goals</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>92</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R93.htm</HtmlFileName>
      <LongName>410003 - Disclosure - Preferred and Income Securities ETF Fees and Expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/4/role/FeesAndExpenses</Role>
      <ShortName>Preferred and Income Securities ETF Fees and Expenses</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>93</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R94.htm</HtmlFileName>
      <LongName>410004 - Disclosure - Preferred and Income Securities ETF Investment Strategy</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/4/role/InvestmentStrategy</Role>
      <ShortName>Preferred and Income Securities ETF Investment Strategy</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>94</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R95.htm</HtmlFileName>
      <LongName>410005 - Disclosure - Preferred and Income Securities ETF Investment Risks</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/4/role/InvestmentRisks</Role>
      <ShortName>Preferred and Income Securities ETF Investment Risks</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>95</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R96.htm</HtmlFileName>
      <LongName>410006 - Disclosure - Preferred and Income Securities ETF Performance Management</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/4/role/PerformanceManagement</Role>
      <ShortName>Preferred and Income Securities ETF Performance Management</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>96</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R97.htm</HtmlFileName>
      <LongName>420020 - Disclosure - Preferred and Income Securities ETF Annual Fund Operating Expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/4/role/OperatingExpensesData</Role>
      <ShortName>Preferred and Income Securities ETF Annual Fund Operating Expenses</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>97</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R98.htm</HtmlFileName>
      <LongName>420030 - Disclosure - Preferred and Income Securities ETF Expense Example</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/4/role/ExpenseExample</Role>
      <ShortName>Preferred and Income Securities ETF Expense Example</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>98</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R99.htm</HtmlFileName>
      <LongName>420050 - Disclosure - Preferred and Income Securities ETF Annual Total Returns</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/4/role/BarChartData</Role>
      <ShortName>Preferred and Income Securities ETF Annual Total Returns</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>99</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R100.htm</HtmlFileName>
      <LongName>420060 - Disclosure - Preferred and Income Securities ETF Average Annual Total Returns</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/4/role/PerformanceTableData</Role>
      <ShortName>Preferred and Income Securities ETF Average Annual Total Returns</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>100</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R101.htm</HtmlFileName>
      <LongName>510000 - Disclosure - Small and Mid Cap Enhanced Equity ETF N-1A Cover</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/5/role/N1aCover</Role>
      <ShortName>Small and Mid Cap Enhanced Equity ETF N-1A Cover</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>101</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R102.htm</HtmlFileName>
      <LongName>510002 - Disclosure - Small and Mid Cap Enhanced Equity ETF Investment Objectives and Goals</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/5/role/RiskReturn</Role>
      <ShortName>Small and Mid Cap Enhanced Equity ETF Investment Objectives and Goals</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>102</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R103.htm</HtmlFileName>
      <LongName>510003 - Disclosure - Small and Mid Cap Enhanced Equity ETF Fees and Expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/5/role/FeesAndExpenses</Role>
      <ShortName>Small and Mid Cap Enhanced Equity ETF Fees and Expenses</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>103</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R104.htm</HtmlFileName>
      <LongName>510004 - Disclosure - Small and Mid Cap Enhanced Equity ETF Investment Strategy</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/5/role/InvestmentStrategy</Role>
      <ShortName>Small and Mid Cap Enhanced Equity ETF Investment Strategy</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>104</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R105.htm</HtmlFileName>
      <LongName>510005 - Disclosure - Small and Mid Cap Enhanced Equity ETF Investment Risks</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/5/role/InvestmentRisks</Role>
      <ShortName>Small and Mid Cap Enhanced Equity ETF Investment Risks</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>105</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R106.htm</HtmlFileName>
      <LongName>510006 - Disclosure - Small and Mid Cap Enhanced Equity ETF Performance Management</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/5/role/PerformanceManagement</Role>
      <ShortName>Small and Mid Cap Enhanced Equity ETF Performance Management</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>106</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R107.htm</HtmlFileName>
      <LongName>520020 - Disclosure - Small and Mid Cap Enhanced Equity ETF Annual Fund Operating Expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/5/role/OperatingExpensesData</Role>
      <ShortName>Small and Mid Cap Enhanced Equity ETF Annual Fund Operating Expenses</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>107</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R108.htm</HtmlFileName>
      <LongName>520030 - Disclosure - Small and Mid Cap Enhanced Equity ETF Expense Example</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/5/role/ExpenseExample</Role>
      <ShortName>Small and Mid Cap Enhanced Equity ETF Expense Example</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>108</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R109.htm</HtmlFileName>
      <LongName>520050 - Disclosure - Small and Mid Cap Enhanced Equity ETF Annual Total Returns</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/5/role/BarChartData</Role>
      <ShortName>Small and Mid Cap Enhanced Equity ETF Annual Total Returns</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>109</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R110.htm</HtmlFileName>
      <LongName>520060 - Disclosure - Small and Mid Cap Enhanced Equity ETF Average Annual Total Returns</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/5/role/PerformanceTableData</Role>
      <ShortName>Small and Mid Cap Enhanced Equity ETF Average Annual Total Returns</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>110</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R111.htm</HtmlFileName>
      <LongName>610000 - Disclosure - Active Growth ETF N-1A Cover</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/6/role/N1aCover</Role>
      <ShortName>Active Growth ETF N-1A Cover</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>111</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R112.htm</HtmlFileName>
      <LongName>610002 - Disclosure - Active Growth ETF Investment Objectives and Goals</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/6/role/RiskReturn</Role>
      <ShortName>Active Growth ETF Investment Objectives and Goals</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>112</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R113.htm</HtmlFileName>
      <LongName>610003 - Disclosure - Active Growth ETF Fees and Expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/6/role/FeesAndExpenses</Role>
      <ShortName>Active Growth ETF Fees and Expenses</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>113</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R114.htm</HtmlFileName>
      <LongName>610004 - Disclosure - Active Growth ETF Investment Strategy</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/6/role/InvestmentStrategy</Role>
      <ShortName>Active Growth ETF Investment Strategy</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>114</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R115.htm</HtmlFileName>
      <LongName>610005 - Disclosure - Active Growth ETF Investment Risks</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/6/role/InvestmentRisks</Role>
      <ShortName>Active Growth ETF Investment Risks</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>115</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R116.htm</HtmlFileName>
      <LongName>610006 - Disclosure - Active Growth ETF Performance Management</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/6/role/PerformanceManagement</Role>
      <ShortName>Active Growth ETF Performance Management</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>116</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R117.htm</HtmlFileName>
      <LongName>620020 - Disclosure - Active Growth ETF Annual Fund Operating Expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/6/role/OperatingExpensesData</Role>
      <ShortName>Active Growth ETF Annual Fund Operating Expenses</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>117</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R118.htm</HtmlFileName>
      <LongName>620030 - Disclosure - Active Growth ETF Expense Example</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/6/role/ExpenseExample</Role>
      <ShortName>Active Growth ETF Expense Example</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>118</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R119.htm</HtmlFileName>
      <LongName>620050 - Disclosure - Active Growth ETF Annual Total Returns</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/6/role/BarChartData</Role>
      <ShortName>Active Growth ETF Annual Total Returns</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>119</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R120.htm</HtmlFileName>
      <LongName>620060 - Disclosure - Active Growth ETF Average Annual Total Returns</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/6/role/PerformanceTableData</Role>
      <ShortName>Active Growth ETF Average Annual Total Returns</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>120</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R121.htm</HtmlFileName>
      <LongName>710000 - Disclosure - Active Small Cap Value ETF N-1A Cover</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/7/role/N1aCover</Role>
      <ShortName>Active Small Cap Value ETF N-1A Cover</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>121</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R122.htm</HtmlFileName>
      <LongName>710002 - Disclosure - Active Small Cap Value ETF Investment Objectives and Goals</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/7/role/RiskReturn</Role>
      <ShortName>Active Small Cap Value ETF Investment Objectives and Goals</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>122</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R123.htm</HtmlFileName>
      <LongName>710003 - Disclosure - Active Small Cap Value ETF Fees and Expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/7/role/FeesAndExpenses</Role>
      <ShortName>Active Small Cap Value ETF Fees and Expenses</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>123</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R124.htm</HtmlFileName>
      <LongName>710004 - Disclosure - Active Small Cap Value ETF Investment Strategy</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/7/role/InvestmentStrategy</Role>
      <ShortName>Active Small Cap Value ETF Investment Strategy</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>124</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R125.htm</HtmlFileName>
      <LongName>710005 - Disclosure - Active Small Cap Value ETF Investment Risks</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/7/role/InvestmentRisks</Role>
      <ShortName>Active Small Cap Value ETF Investment Risks</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>125</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R126.htm</HtmlFileName>
      <LongName>710006 - Disclosure - Active Small Cap Value ETF Performance Management</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/7/role/PerformanceManagement</Role>
      <ShortName>Active Small Cap Value ETF Performance Management</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>126</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R127.htm</HtmlFileName>
      <LongName>720020 - Disclosure - Active Small Cap Value ETF Annual Fund Operating Expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/7/role/OperatingExpensesData</Role>
      <ShortName>Active Small Cap Value ETF Annual Fund Operating Expenses</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>127</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R128.htm</HtmlFileName>
      <LongName>720030 - Disclosure - Active Small Cap Value ETF Expense Example</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/7/role/ExpenseExample</Role>
      <ShortName>Active Small Cap Value ETF Expense Example</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>128</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R129.htm</HtmlFileName>
      <LongName>720050 - Disclosure - Active Small Cap Value ETF Annual Total Returns</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/7/role/BarChartData</Role>
      <ShortName>Active Small Cap Value ETF Annual Total Returns</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>129</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R130.htm</HtmlFileName>
      <LongName>720060 - Disclosure - Active Small Cap Value ETF Average Annual Total Returns</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/7/role/PerformanceTableData</Role>
      <ShortName>Active Small Cap Value ETF Average Annual Total Returns</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>130</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R131.htm</HtmlFileName>
      <LongName>810000 - Disclosure - Active Value ETF N-1A Cover</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/8/role/N1aCover</Role>
      <ShortName>Active Value ETF N-1A Cover</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>131</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R132.htm</HtmlFileName>
      <LongName>810002 - Disclosure - Active Value ETF Investment Objectives and Goals</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/8/role/RiskReturn</Role>
      <ShortName>Active Value ETF Investment Objectives and Goals</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>132</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R133.htm</HtmlFileName>
      <LongName>810003 - Disclosure - Active Value ETF Fees and Expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/8/role/FeesAndExpenses</Role>
      <ShortName>Active Value ETF Fees and Expenses</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>133</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R134.htm</HtmlFileName>
      <LongName>810004 - Disclosure - Active Value ETF Investment Strategy</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/8/role/InvestmentStrategy</Role>
      <ShortName>Active Value ETF Investment Strategy</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>134</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R135.htm</HtmlFileName>
      <LongName>810005 - Disclosure - Active Value ETF Investment Risks</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/8/role/InvestmentRisks</Role>
      <ShortName>Active Value ETF Investment Risks</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>135</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R136.htm</HtmlFileName>
      <LongName>810006 - Disclosure - Active Value ETF Performance Management</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/8/role/PerformanceManagement</Role>
      <ShortName>Active Value ETF Performance Management</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>136</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R137.htm</HtmlFileName>
      <LongName>820020 - Disclosure - Active Value ETF Annual Fund Operating Expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/8/role/OperatingExpensesData</Role>
      <ShortName>Active Value ETF Annual Fund Operating Expenses</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>137</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R138.htm</HtmlFileName>
      <LongName>820030 - Disclosure - Active Value ETF Expense Example</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/8/role/ExpenseExample</Role>
      <ShortName>Active Value ETF Expense Example</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>138</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R139.htm</HtmlFileName>
      <LongName>820050 - Disclosure - Active Value ETF Annual Total Returns</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/8/role/BarChartData</Role>
      <ShortName>Active Value ETF Annual Total Returns</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>139</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R140.htm</HtmlFileName>
      <LongName>820060 - Disclosure - Active Value ETF Average Annual Total Returns</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/8/role/PerformanceTableData</Role>
      <ShortName>Active Value ETF Average Annual Total Returns</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>140</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R141.htm</HtmlFileName>
      <LongName>910000 - Disclosure - Equity Premium Income ETF N-1A Cover</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/9/role/N1aCover</Role>
      <ShortName>Equity Premium Income ETF N-1A Cover</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>141</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R142.htm</HtmlFileName>
      <LongName>910002 - Disclosure - Equity Premium Income ETF Investment Objectives and Goals</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/9/role/RiskReturn</Role>
      <ShortName>Equity Premium Income ETF Investment Objectives and Goals</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>142</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R143.htm</HtmlFileName>
      <LongName>910003 - Disclosure - Equity Premium Income ETF Fees and Expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/9/role/FeesAndExpenses</Role>
      <ShortName>Equity Premium Income ETF Fees and Expenses</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>143</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R144.htm</HtmlFileName>
      <LongName>910004 - Disclosure - Equity Premium Income ETF Investment Strategy</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/9/role/InvestmentStrategy</Role>
      <ShortName>Equity Premium Income ETF Investment Strategy</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>144</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R145.htm</HtmlFileName>
      <LongName>910005 - Disclosure - Equity Premium Income ETF Investment Risks</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/9/role/InvestmentRisks</Role>
      <ShortName>Equity Premium Income ETF Investment Risks</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>145</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R146.htm</HtmlFileName>
      <LongName>910006 - Disclosure - Equity Premium Income ETF Performance Management</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/9/role/PerformanceManagement</Role>
      <ShortName>Equity Premium Income ETF Performance Management</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>146</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R147.htm</HtmlFileName>
      <LongName>920020 - Disclosure - Equity Premium Income ETF Annual Fund Operating Expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/9/role/OperatingExpensesData</Role>
      <ShortName>Equity Premium Income ETF Annual Fund Operating Expenses</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>147</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R148.htm</HtmlFileName>
      <LongName>920030 - Disclosure - Equity Premium Income ETF Expense Example</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/9/role/ExpenseExample</Role>
      <ShortName>Equity Premium Income ETF Expense Example</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>148</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R149.htm</HtmlFileName>
      <LongName>920050 - Disclosure - Equity Premium Income ETF Annual Total Returns</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/9/role/BarChartData</Role>
      <ShortName>Equity Premium Income ETF Annual Total Returns</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>149</Position>
    </Report>
    <Report instance="d379738d485bpos.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R150.htm</HtmlFileName>
      <LongName>920060 - Disclosure - Equity Premium Income ETF Average Annual Total Returns</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.jpmorganfunds.com/9/role/PerformanceTableData</Role>
      <ShortName>Equity Premium Income ETF Average Annual Total Returns</ShortName>
      <MenuCategory>Risk/Return</MenuCategory>
      <Position>150</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File doctype="485BPOS" isN1a="true" isOEF="true" isRRorOEF="true" isUsgaap="true" original="d379738d485bpos.htm">d379738d485bpos.htm</File>
    <File>jpeft-20260630.xsd</File>
  </InputFiles>
  <SupplementalFiles>
    <File>g379738agetf_6.jpg</File>
    <File>g379738ascvetf_3.jpg</File>
    <File>g379738avetf_6.jpg</File>
    <File>g379738efetf_6.jpg</File>
    <File>g379738epietf_7.jpg</File>
    <File>g379738fdslcetf_2.jpg</File>
    <File>g379738fdslgetf_3.jpg</File>
    <File>g379738fdslvetf_4.jpg</File>
    <File>g379738fdsmcetf_2.jpg</File>
    <File>g379738fdsscetf_2.jpg</File>
    <File>g379738fsc_proslogo.gif</File>
    <File>g379738logo_back.gif</File>
    <File>g379738logo_front.gif</File>
    <File>g379738meeifr2_24.jpg</File>
    <File>g379738nepietf_5.jpg</File>
    <File>g379738pisetf_4.jpg</File>
    <File>g379738ustletf_3.jpg</File>
    <File>g560441blendedpolicygraphic.gif</File>
    <File>g560441egan_jones.gif</File>
    <File>g560441eganj_proxy.gif</File>
  </SupplementalFiles>
  <BaseTaxonomies>
    <BaseTaxonomy items="6">http://xbrl.sec.gov/dei/2026</BaseTaxonomy>
    <BaseTaxonomy items="42">http://xbrl.sec.gov/fnd/2026</BaseTaxonomy>
    <BaseTaxonomy items="1113">http://xbrl.sec.gov/oef/2026</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>false</HasPresentationLinkbase>
  <HasCalculationLinkbase>false</HasCalculationLinkbase>
</FilingSummary>
