<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.26.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>2344</ContextCount>
  <ElementCount>45</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>676</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>3</UnitCount>
  <MyReports>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>030000 - Disclosure - Form N-CSR Cover</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/oef/role/NcsrCover</Role>
      <ShortName>Form N-CSR Cover</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>030001 - Disclosure - Shareholder Report</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/oef/role/ShareholderReport</Role>
      <ShortName>Shareholder Report</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>040014 - Document - Shareholder Report, Line Graph (Details) 1014012_Franklin Emerging Market Core Dividend Tilt Index ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_1</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014012_Franklin Emerging Market Core Dividend Tilt Index ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>040015 - Document - Shareholder Report, Average Annual Return (Details) 1014012_Franklin Emerging Market Core Dividend Tilt Index ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_1</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014012_Franklin Emerging Market Core Dividend Tilt Index ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>040016 - Document - Shareholder Report, Holdings (Details) 1014012_Franklin Emerging Market Core Dividend Tilt Index ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_1</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014012_Franklin Emerging Market Core Dividend Tilt Index ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>040018 - Document - Shareholder Report, Line Graph (Details) 1014011_Franklin International Core Dividend Tilt Index ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_2</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014011_Franklin International Core Dividend Tilt Index ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>040019 - Document - Shareholder Report, Average Annual Return (Details) 1014011_Franklin International Core Dividend Tilt Index ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_2</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014011_Franklin International Core Dividend Tilt Index ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>040020 - Document - Shareholder Report, Holdings (Details) 1014011_Franklin International Core Dividend Tilt Index ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_2</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014011_Franklin International Core Dividend Tilt Index ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>040022 - Document - Shareholder Report, Line Graph (Details) 1014073_Franklin International Dividend Booster Index ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_3</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014073_Franklin International Dividend Booster Index ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>040023 - Document - Shareholder Report, Average Annual Return (Details) 1014073_Franklin International Dividend Booster Index ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_3</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014073_Franklin International Dividend Booster Index ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>040024 - Document - Shareholder Report, Holdings (Details) 1014073_Franklin International Dividend Booster Index ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_3</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014073_Franklin International Dividend Booster Index ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>040026 - Document - Shareholder Report, Line Graph (Details) 1014014_Franklin U.S. Core Dividend Tilt Index ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_4</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014014_Franklin U.S. Core Dividend Tilt Index ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>040027 - Document - Shareholder Report, Average Annual Return (Details) 1014014_Franklin U.S. Core Dividend Tilt Index ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_4</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014014_Franklin U.S. Core Dividend Tilt Index ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>040028 - Document - Shareholder Report, Holdings (Details) 1014014_Franklin U.S. Core Dividend Tilt Index ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_4</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014014_Franklin U.S. Core Dividend Tilt Index ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>040030 - Document - Shareholder Report, Line Graph (Details) 1014072_Franklin U.S. Dividend Booster Index ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_5</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014072_Franklin U.S. Dividend Booster Index ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>040031 - Document - Shareholder Report, Average Annual Return (Details) 1014072_Franklin U.S. Dividend Booster Index ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_5</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014072_Franklin U.S. Dividend Booster Index ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>040032 - Document - Shareholder Report, Holdings (Details) 1014072_Franklin U.S. Dividend Booster Index ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_5</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014072_Franklin U.S. Dividend Booster Index ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>040034 - Document - Shareholder Report, Line Graph (Details) 1014019_Franklin U.S. Large Cap Multifactor Index ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_6</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014019_Franklin U.S. Large Cap Multifactor Index ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>040035 - Document - Shareholder Report, Average Annual Return (Details) 1014019_Franklin U.S. Large Cap Multifactor Index ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_6</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014019_Franklin U.S. Large Cap Multifactor Index ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>040036 - Document - Shareholder Report, Holdings (Details) 1014019_Franklin U.S. Large Cap Multifactor Index ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_6</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014019_Franklin U.S. Large Cap Multifactor Index ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>040038 - Document - Shareholder Report, Line Graph (Details) 1014018_Franklin U.S. Mid Cap Multifactor Index ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_7</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014018_Franklin U.S. Mid Cap Multifactor Index ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>040039 - Document - Shareholder Report, Average Annual Return (Details) 1014018_Franklin U.S. Mid Cap Multifactor Index ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_7</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014018_Franklin U.S. Mid Cap Multifactor Index ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>040040 - Document - Shareholder Report, Holdings (Details) 1014018_Franklin U.S. Mid Cap Multifactor Index ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_7</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014018_Franklin U.S. Mid Cap Multifactor Index ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>040042 - Document - Shareholder Report, Line Graph (Details) 1014017_Franklin U.S. Small Cap Multifactor Index ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_8</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014017_Franklin U.S. Small Cap Multifactor Index ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>040043 - Document - Shareholder Report, Average Annual Return (Details) 1014017_Franklin U.S. Small Cap Multifactor Index ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_8</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014017_Franklin U.S. Small Cap Multifactor Index ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>040044 - Document - Shareholder Report, Holdings (Details) 1014017_Franklin U.S. Small Cap Multifactor Index ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_8</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014017_Franklin U.S. Small Cap Multifactor Index ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>040046 - Document - Shareholder Report, Line Graph (Details) 1014047_Franklin Disruptive Commerce ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_9</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014047_Franklin Disruptive Commerce ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>27</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>040047 - Document - Shareholder Report, Average Annual Return (Details) 1014047_Franklin Disruptive Commerce ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_9</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014047_Franklin Disruptive Commerce ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>28</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>040048 - Document - Shareholder Report, Holdings (Details) 1014047_Franklin Disruptive Commerce ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_9</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014047_Franklin Disruptive Commerce ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>29</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>040050 - Document - Shareholder Report, Line Graph (Details) 9046792_Franklin Dividend Growth ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_10</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 9046792_Franklin Dividend Growth ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>30</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>040051 - Document - Shareholder Report, Average Annual Return (Details) 9046792_Franklin Dividend Growth ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_10</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 9046792_Franklin Dividend Growth ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>31</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>040052 - Document - Shareholder Report, Holdings (Details) 9046792_Franklin Dividend Growth ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_10</Role>
      <ShortName>Shareholder Report, Holdings (Details) 9046792_Franklin Dividend Growth ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>32</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>040054 - Document - Shareholder Report, Line Graph (Details) 1014020_Franklin Dynamic Municipal Bond ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_11</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014020_Franklin Dynamic Municipal Bond ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>33</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>040055 - Document - Shareholder Report, Average Annual Return (Details) 1014020_Franklin Dynamic Municipal Bond ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_11</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014020_Franklin Dynamic Municipal Bond ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>34</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>040056 - Document - Shareholder Report, Holdings (Details) 1014020_Franklin Dynamic Municipal Bond ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_11</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014020_Franklin Dynamic Municipal Bond ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>35</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>040058 - Document - Shareholder Report, Line Graph (Details) 1014052_Franklin Exponential Data ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_12</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014052_Franklin Exponential Data ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>36</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>040059 - Document - Shareholder Report, Average Annual Return (Details) 1014052_Franklin Exponential Data ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_12</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014052_Franklin Exponential Data ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>37</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>040060 - Document - Shareholder Report, Holdings (Details) 1014052_Franklin Exponential Data ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_12</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014052_Franklin Exponential Data ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>38</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>040062 - Document - Shareholder Report, Line Graph (Details) 1014058_Franklin Focused Growth ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_13</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014058_Franklin Focused Growth ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>39</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>040063 - Document - Shareholder Report, Average Annual Return (Details) 1014058_Franklin Focused Growth ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_13</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014058_Franklin Focused Growth ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>40</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>040064 - Document - Shareholder Report, Holdings (Details) 1014058_Franklin Focused Growth ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_13</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014058_Franklin Focused Growth ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>41</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>040066 - Document - Shareholder Report, Line Graph (Details) 1014048_Franklin Genomic Advancements ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_14</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014048_Franklin Genomic Advancements ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>42</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>040067 - Document - Shareholder Report, Average Annual Return (Details) 1014048_Franklin Genomic Advancements ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_14</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014048_Franklin Genomic Advancements ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>43</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>040068 - Document - Shareholder Report, Holdings (Details) 1014048_Franklin Genomic Advancements ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_14</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014048_Franklin Genomic Advancements ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>44</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>040070 - Document - Shareholder Report, Line Graph (Details) 1014042_Franklin High Yield Corporate ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_15</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014042_Franklin High Yield Corporate ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>45</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>040071 - Document - Shareholder Report, Average Annual Return (Details) 1014042_Franklin High Yield Corporate ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_15</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014042_Franklin High Yield Corporate ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>46</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>040072 - Document - Shareholder Report, Holdings (Details) 1014042_Franklin High Yield Corporate ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_15</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014042_Franklin High Yield Corporate ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>47</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>040074 - Document - Shareholder Report, Line Graph (Details) 1014016_Franklin Income Equity Focus ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_16</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014016_Franklin Income Equity Focus ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>48</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>040075 - Document - Shareholder Report, Average Annual Return (Details) 1014016_Franklin Income Equity Focus ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_16</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014016_Franklin Income Equity Focus ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>49</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>040076 - Document - Shareholder Report, Holdings (Details) 1014016_Franklin Income Equity Focus ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_16</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014016_Franklin Income Equity Focus ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>50</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>040078 - Document - Shareholder Report, Line Graph (Details) 1014056_Franklin Income Focus ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_17</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014056_Franklin Income Focus ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>51</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>040079 - Document - Shareholder Report, Average Annual Return (Details) 1014056_Franklin Income Focus ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_17</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014056_Franklin Income Focus ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>52</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>040080 - Document - Shareholder Report, Holdings (Details) 1014056_Franklin Income Focus ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_17</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014056_Franklin Income Focus ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>53</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>040082 - Document - Shareholder Report, Line Graph (Details) 1014049_Franklin Intelligent Machines ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_18</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014049_Franklin Intelligent Machines ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>54</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>040083 - Document - Shareholder Report, Average Annual Return (Details) 1014049_Franklin Intelligent Machines ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_18</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014049_Franklin Intelligent Machines ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>55</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>040084 - Document - Shareholder Report, Holdings (Details) 1014049_Franklin Intelligent Machines ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_18</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014049_Franklin Intelligent Machines ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>56</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>040086 - Document - Shareholder Report, Line Graph (Details) 1014040_Franklin International Aggregate Bond ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_19</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014040_Franklin International Aggregate Bond ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>57</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>040087 - Document - Shareholder Report, Average Annual Return (Details) 1014040_Franklin International Aggregate Bond ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_19</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014040_Franklin International Aggregate Bond ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>58</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>040088 - Document - Shareholder Report, Holdings (Details) 1014040_Franklin International Aggregate Bond ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_19</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014040_Franklin International Aggregate Bond ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>59</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>040090 - Document - Shareholder Report, Line Graph (Details) 1014015_Franklin Investment Grade Corporate ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_20</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014015_Franklin Investment Grade Corporate ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>60</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>040091 - Document - Shareholder Report, Average Annual Return (Details) 1014015_Franklin Investment Grade Corporate ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_20</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014015_Franklin Investment Grade Corporate ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>61</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>040092 - Document - Shareholder Report, Holdings (Details) 1014015_Franklin Investment Grade Corporate ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_20</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014015_Franklin Investment Grade Corporate ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>62</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>040094 - Document - Shareholder Report, Line Graph (Details) 9046789_Franklin Multisector Income ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_21</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 9046789_Franklin Multisector Income ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>63</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>040095 - Document - Shareholder Report, Average Annual Return (Details) 9046789_Franklin Multisector Income ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_21</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 9046789_Franklin Multisector Income ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>64</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>040096 - Document - Shareholder Report, Holdings (Details) 9046789_Franklin Multisector Income ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_21</Role>
      <ShortName>Shareholder Report, Holdings (Details) 9046789_Franklin Multisector Income ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>65</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>040098 - Document - Shareholder Report, Line Graph (Details) 1014021_Franklin Municipal Green Bond ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_22</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014021_Franklin Municipal Green Bond ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>66</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>040099 - Document - Shareholder Report, Average Annual Return (Details) 1014021_Franklin Municipal Green Bond ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_22</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014021_Franklin Municipal Green Bond ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>67</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>040100 - Document - Shareholder Report, Holdings (Details) 1014021_Franklin Municipal Green Bond ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_22</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014021_Franklin Municipal Green Bond ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>68</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>040102 - Document - Shareholder Report, Line Graph (Details) 1014041_Franklin Senior Loan ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_23</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014041_Franklin Senior Loan ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>69</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R70.htm</HtmlFileName>
      <LongName>040103 - Document - Shareholder Report, Average Annual Return (Details) 1014041_Franklin Senior Loan ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_23</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014041_Franklin Senior Loan ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>70</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R71.htm</HtmlFileName>
      <LongName>040104 - Document - Shareholder Report, Holdings (Details) 1014041_Franklin Senior Loan ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_23</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014041_Franklin Senior Loan ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>71</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R72.htm</HtmlFileName>
      <LongName>040106 - Document - Shareholder Report, Line Graph (Details) 1014045_Franklin Systematic Style Premia ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_24</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014045_Franklin Systematic Style Premia ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>72</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R73.htm</HtmlFileName>
      <LongName>040107 - Document - Shareholder Report, Average Annual Return (Details) 1014045_Franklin Systematic Style Premia ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_24</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014045_Franklin Systematic Style Premia ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>73</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R74.htm</HtmlFileName>
      <LongName>040108 - Document - Shareholder Report, Holdings (Details) 1014045_Franklin Systematic Style Premia ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_24</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014045_Franklin Systematic Style Premia ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>74</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R75.htm</HtmlFileName>
      <LongName>040110 - Document - Shareholder Report, Line Graph (Details) 1014046_Franklin U.S. Core Bond ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_25</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014046_Franklin U.S. Core Bond ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>75</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R76.htm</HtmlFileName>
      <LongName>040111 - Document - Shareholder Report, Average Annual Return (Details) 1014046_Franklin U.S. Core Bond ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_25</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014046_Franklin U.S. Core Bond ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>76</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R77.htm</HtmlFileName>
      <LongName>040112 - Document - Shareholder Report, Holdings (Details) 1014046_Franklin U.S. Core Bond ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_25</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014046_Franklin U.S. Core Bond ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>77</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R78.htm</HtmlFileName>
      <LongName>040114 - Document - Shareholder Report, Line Graph (Details) 1014051_Franklin U.S. Treasury Bond ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_26</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014051_Franklin U.S. Treasury Bond ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>78</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R79.htm</HtmlFileName>
      <LongName>040115 - Document - Shareholder Report, Average Annual Return (Details) 1014051_Franklin U.S. Treasury Bond ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_26</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014051_Franklin U.S. Treasury Bond ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>79</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R80.htm</HtmlFileName>
      <LongName>040116 - Document - Shareholder Report, Holdings (Details) 1014051_Franklin U.S. Treasury Bond ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_26</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014051_Franklin U.S. Treasury Bond ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>80</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R81.htm</HtmlFileName>
      <LongName>040118 - Document - Shareholder Report, Line Graph (Details) 1014050_Franklin Ultra Short Bond ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_27</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014050_Franklin Ultra Short Bond ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>81</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R82.htm</HtmlFileName>
      <LongName>040119 - Document - Shareholder Report, Average Annual Return (Details) 1014050_Franklin Ultra Short Bond ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_27</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014050_Franklin Ultra Short Bond ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>82</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R83.htm</HtmlFileName>
      <LongName>040120 - Document - Shareholder Report, Holdings (Details) 1014050_Franklin Ultra Short Bond ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_27</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014050_Franklin Ultra Short Bond ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>83</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R84.htm</HtmlFileName>
      <LongName>040122 - Document - Shareholder Report, Line Graph (Details) 1014022_Franklin FTSE Asia Ex Japan ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_28</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014022_Franklin FTSE Asia Ex Japan ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>84</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R85.htm</HtmlFileName>
      <LongName>040123 - Document - Shareholder Report, Average Annual Return (Details) 1014022_Franklin FTSE Asia Ex Japan ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_28</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014022_Franklin FTSE Asia Ex Japan ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>85</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R86.htm</HtmlFileName>
      <LongName>040124 - Document - Shareholder Report, Holdings (Details) 1014022_Franklin FTSE Asia Ex Japan ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_28</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014022_Franklin FTSE Asia Ex Japan ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>86</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R87.htm</HtmlFileName>
      <LongName>040126 - Document - Shareholder Report, Line Graph (Details) 1014039_Franklin FTSE Australia ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_29</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014039_Franklin FTSE Australia ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>87</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R88.htm</HtmlFileName>
      <LongName>040127 - Document - Shareholder Report, Average Annual Return (Details) 1014039_Franklin FTSE Australia ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_29</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014039_Franklin FTSE Australia ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>88</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R89.htm</HtmlFileName>
      <LongName>040128 - Document - Shareholder Report, Holdings (Details) 1014039_Franklin FTSE Australia ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_29</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014039_Franklin FTSE Australia ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>89</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R90.htm</HtmlFileName>
      <LongName>040130 - Document - Shareholder Report, Line Graph (Details) 1014037_Franklin FTSE Brazil ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_30</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014037_Franklin FTSE Brazil ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>90</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R91.htm</HtmlFileName>
      <LongName>040131 - Document - Shareholder Report, Average Annual Return (Details) 1014037_Franklin FTSE Brazil ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_30</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014037_Franklin FTSE Brazil ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>91</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R92.htm</HtmlFileName>
      <LongName>040132 - Document - Shareholder Report, Holdings (Details) 1014037_Franklin FTSE Brazil ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_30</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014037_Franklin FTSE Brazil ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>92</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R93.htm</HtmlFileName>
      <LongName>040134 - Document - Shareholder Report, Line Graph (Details) 1014038_Franklin FTSE Canada ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_31</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014038_Franklin FTSE Canada ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>93</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R94.htm</HtmlFileName>
      <LongName>040135 - Document - Shareholder Report, Average Annual Return (Details) 1014038_Franklin FTSE Canada ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_31</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014038_Franklin FTSE Canada ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>94</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R95.htm</HtmlFileName>
      <LongName>040136 - Document - Shareholder Report, Holdings (Details) 1014038_Franklin FTSE Canada ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_31</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014038_Franklin FTSE Canada ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>95</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R96.htm</HtmlFileName>
      <LongName>040138 - Document - Shareholder Report, Line Graph (Details) 1014036_Franklin FTSE China ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_32</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014036_Franklin FTSE China ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>96</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R97.htm</HtmlFileName>
      <LongName>040139 - Document - Shareholder Report, Average Annual Return (Details) 1014036_Franklin FTSE China ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_32</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014036_Franklin FTSE China ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>97</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R98.htm</HtmlFileName>
      <LongName>040140 - Document - Shareholder Report, Holdings (Details) 1014036_Franklin FTSE China ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_32</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014036_Franklin FTSE China ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>98</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R99.htm</HtmlFileName>
      <LongName>040142 - Document - Shareholder Report, Line Graph (Details) 1014025_Franklin FTSE Europe ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_33</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014025_Franklin FTSE Europe ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>99</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R100.htm</HtmlFileName>
      <LongName>040143 - Document - Shareholder Report, Average Annual Return (Details) 1014025_Franklin FTSE Europe ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_33</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014025_Franklin FTSE Europe ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>100</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R101.htm</HtmlFileName>
      <LongName>040144 - Document - Shareholder Report, Holdings (Details) 1014025_Franklin FTSE Europe ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_33</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014025_Franklin FTSE Europe ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>101</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R102.htm</HtmlFileName>
      <LongName>040146 - Document - Shareholder Report, Line Graph (Details) 1014023_Franklin FTSE Eurozone ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_34</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014023_Franklin FTSE Eurozone ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>102</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R103.htm</HtmlFileName>
      <LongName>040147 - Document - Shareholder Report, Average Annual Return (Details) 1014023_Franklin FTSE Eurozone ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_34</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014023_Franklin FTSE Eurozone ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>103</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R104.htm</HtmlFileName>
      <LongName>040148 - Document - Shareholder Report, Holdings (Details) 1014023_Franklin FTSE Eurozone ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_34</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014023_Franklin FTSE Eurozone ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>104</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R105.htm</HtmlFileName>
      <LongName>040150 - Document - Shareholder Report, Line Graph (Details) 1014035_Franklin FTSE Germany ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_35</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014035_Franklin FTSE Germany ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>105</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R106.htm</HtmlFileName>
      <LongName>040151 - Document - Shareholder Report, Average Annual Return (Details) 1014035_Franklin FTSE Germany ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_35</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014035_Franklin FTSE Germany ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>106</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R107.htm</HtmlFileName>
      <LongName>040152 - Document - Shareholder Report, Holdings (Details) 1014035_Franklin FTSE Germany ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_35</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014035_Franklin FTSE Germany ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>107</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R108.htm</HtmlFileName>
      <LongName>040154 - Document - Shareholder Report, Line Graph (Details) 1014024_Franklin FTSE India ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_36</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014024_Franklin FTSE India ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>108</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R109.htm</HtmlFileName>
      <LongName>040155 - Document - Shareholder Report, Average Annual Return (Details) 1014024_Franklin FTSE India ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_36</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014024_Franklin FTSE India ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>109</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R110.htm</HtmlFileName>
      <LongName>040156 - Document - Shareholder Report, Holdings (Details) 1014024_Franklin FTSE India ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_36</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014024_Franklin FTSE India ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>110</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R111.htm</HtmlFileName>
      <LongName>040158 - Document - Shareholder Report, Line Graph (Details) 1014033_Franklin FTSE Japan ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_37</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014033_Franklin FTSE Japan ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>111</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R112.htm</HtmlFileName>
      <LongName>040159 - Document - Shareholder Report, Average Annual Return (Details) 1014033_Franklin FTSE Japan ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_37</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014033_Franklin FTSE Japan ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>112</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R113.htm</HtmlFileName>
      <LongName>040160 - Document - Shareholder Report, Holdings (Details) 1014033_Franklin FTSE Japan ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_37</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014033_Franklin FTSE Japan ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>113</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R114.htm</HtmlFileName>
      <LongName>040162 - Document - Shareholder Report, Line Graph (Details) 1014031_Franklin FTSE Japan Hedged ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_38</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014031_Franklin FTSE Japan Hedged ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>114</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R115.htm</HtmlFileName>
      <LongName>040163 - Document - Shareholder Report, Average Annual Return (Details) 1014031_Franklin FTSE Japan Hedged ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_38</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014031_Franklin FTSE Japan Hedged ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>115</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R116.htm</HtmlFileName>
      <LongName>040164 - Document - Shareholder Report, Holdings (Details) 1014031_Franklin FTSE Japan Hedged ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_38</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014031_Franklin FTSE Japan Hedged ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>116</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R117.htm</HtmlFileName>
      <LongName>040166 - Document - Shareholder Report, Line Graph (Details) 1014044_Franklin FTSE Latin America ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_39</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014044_Franklin FTSE Latin America ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>117</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R118.htm</HtmlFileName>
      <LongName>040167 - Document - Shareholder Report, Average Annual Return (Details) 1014044_Franklin FTSE Latin America ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_39</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014044_Franklin FTSE Latin America ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>118</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R119.htm</HtmlFileName>
      <LongName>040168 - Document - Shareholder Report, Holdings (Details) 1014044_Franklin FTSE Latin America ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_39</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014044_Franklin FTSE Latin America ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>119</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R120.htm</HtmlFileName>
      <LongName>040170 - Document - Shareholder Report, Line Graph (Details) 1014030_Franklin FTSE Mexico ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_40</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014030_Franklin FTSE Mexico ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>120</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R121.htm</HtmlFileName>
      <LongName>040171 - Document - Shareholder Report, Average Annual Return (Details) 1014030_Franklin FTSE Mexico ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_40</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014030_Franklin FTSE Mexico ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>121</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R122.htm</HtmlFileName>
      <LongName>040172 - Document - Shareholder Report, Holdings (Details) 1014030_Franklin FTSE Mexico ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_40</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014030_Franklin FTSE Mexico ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>122</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R123.htm</HtmlFileName>
      <LongName>040174 - Document - Shareholder Report, Line Graph (Details) 1014043_Franklin FTSE Saudi Arabia ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_41</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014043_Franklin FTSE Saudi Arabia ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>123</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R124.htm</HtmlFileName>
      <LongName>040175 - Document - Shareholder Report, Average Annual Return (Details) 1014043_Franklin FTSE Saudi Arabia ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_41</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014043_Franklin FTSE Saudi Arabia ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>124</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R125.htm</HtmlFileName>
      <LongName>040176 - Document - Shareholder Report, Holdings (Details) 1014043_Franklin FTSE Saudi Arabia ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_41</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014043_Franklin FTSE Saudi Arabia ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>125</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R126.htm</HtmlFileName>
      <LongName>040178 - Document - Shareholder Report, Line Graph (Details) 1014029_Franklin FTSE South Korea ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_42</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014029_Franklin FTSE South Korea ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>126</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R127.htm</HtmlFileName>
      <LongName>040179 - Document - Shareholder Report, Average Annual Return (Details) 1014029_Franklin FTSE South Korea ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_42</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014029_Franklin FTSE South Korea ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>127</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R128.htm</HtmlFileName>
      <LongName>040180 - Document - Shareholder Report, Holdings (Details) 1014029_Franklin FTSE South Korea ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_42</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014029_Franklin FTSE South Korea ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>128</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R129.htm</HtmlFileName>
      <LongName>040182 - Document - Shareholder Report, Line Graph (Details) 1014028_Franklin FTSE Switzerland ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_43</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014028_Franklin FTSE Switzerland ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>129</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R130.htm</HtmlFileName>
      <LongName>040183 - Document - Shareholder Report, Average Annual Return (Details) 1014028_Franklin FTSE Switzerland ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_43</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014028_Franklin FTSE Switzerland ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>130</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R131.htm</HtmlFileName>
      <LongName>040184 - Document - Shareholder Report, Holdings (Details) 1014028_Franklin FTSE Switzerland ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_43</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014028_Franklin FTSE Switzerland ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>131</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R132.htm</HtmlFileName>
      <LongName>040186 - Document - Shareholder Report, Line Graph (Details) 1014027_Franklin FTSE Taiwan ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_44</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014027_Franklin FTSE Taiwan ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>132</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R133.htm</HtmlFileName>
      <LongName>040187 - Document - Shareholder Report, Average Annual Return (Details) 1014027_Franklin FTSE Taiwan ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_44</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014027_Franklin FTSE Taiwan ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>133</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R134.htm</HtmlFileName>
      <LongName>040188 - Document - Shareholder Report, Holdings (Details) 1014027_Franklin FTSE Taiwan ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_44</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014027_Franklin FTSE Taiwan ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>134</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R135.htm</HtmlFileName>
      <LongName>040190 - Document - Shareholder Report, Line Graph (Details) 1014026_Franklin FTSE United Kingdom ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_45</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014026_Franklin FTSE United Kingdom ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>135</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R136.htm</HtmlFileName>
      <LongName>040191 - Document - Shareholder Report, Average Annual Return (Details) 1014026_Franklin FTSE United Kingdom ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_45</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014026_Franklin FTSE United Kingdom ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>136</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R137.htm</HtmlFileName>
      <LongName>040192 - Document - Shareholder Report, Holdings (Details) 1014026_Franklin FTSE United Kingdom ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_45</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014026_Franklin FTSE United Kingdom ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>137</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R138.htm</HtmlFileName>
      <LongName>040194 - Document - Shareholder Report, Line Graph (Details) 1014053_BrandywineGLOBAL-Dynamic US Large Cap Value ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_46</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014053_BrandywineGLOBAL-Dynamic US Large Cap Value ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>138</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R139.htm</HtmlFileName>
      <LongName>040195 - Document - Shareholder Report, Average Annual Return (Details) 1014053_BrandywineGLOBAL-Dynamic US Large Cap Value ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_46</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014053_BrandywineGLOBAL-Dynamic US Large Cap Value ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>139</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R140.htm</HtmlFileName>
      <LongName>040196 - Document - Shareholder Report, Holdings (Details) 1014053_BrandywineGLOBAL-Dynamic US Large Cap Value ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_46</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014053_BrandywineGLOBAL-Dynamic US Large Cap Value ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>140</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R141.htm</HtmlFileName>
      <LongName>040198 - Document - Shareholder Report, Line Graph (Details) 1014059_BrandywineGLOBAL - U.S. Fixed Income ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_47</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014059_BrandywineGLOBAL - U.S. Fixed Income ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>141</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R142.htm</HtmlFileName>
      <LongName>040199 - Document - Shareholder Report, Average Annual Return (Details) 1014059_BrandywineGLOBAL - U.S. Fixed Income ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_47</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014059_BrandywineGLOBAL - U.S. Fixed Income ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>142</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R143.htm</HtmlFileName>
      <LongName>040200 - Document - Shareholder Report, Holdings (Details) 1014059_BrandywineGLOBAL - U.S. Fixed Income ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_47</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014059_BrandywineGLOBAL - U.S. Fixed Income ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>143</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R144.htm</HtmlFileName>
      <LongName>040202 - Document - Shareholder Report, Line Graph (Details) 1014032_Franklin FTSE Russia ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_48</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014032_Franklin FTSE Russia ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>144</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R145.htm</HtmlFileName>
      <LongName>040203 - Document - Shareholder Report, Average Annual Return (Details) 1014032_Franklin FTSE Russia ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_48</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014032_Franklin FTSE Russia ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>145</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R146.htm</HtmlFileName>
      <LongName>040204 - Document - Shareholder Report, Holdings (Details) 1014032_Franklin FTSE Russia ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_48</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014032_Franklin FTSE Russia ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>146</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R147.htm</HtmlFileName>
      <LongName>040206 - Document - Shareholder Report, Line Graph (Details) 374408_Franklin Small Cap Enhanced ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_49</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 374408_Franklin Small Cap Enhanced ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>147</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R148.htm</HtmlFileName>
      <LongName>040207 - Document - Shareholder Report, Average Annual Return (Details) 374408_Franklin Small Cap Enhanced ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_49</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 374408_Franklin Small Cap Enhanced ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>148</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R149.htm</HtmlFileName>
      <LongName>040208 - Document - Shareholder Report, Holdings (Details) 374408_Franklin Small Cap Enhanced ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_49</Role>
      <ShortName>Shareholder Report, Holdings (Details) 374408_Franklin Small Cap Enhanced ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>149</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R150.htm</HtmlFileName>
      <LongName>040210 - Document - Shareholder Report, Line Graph (Details) 1014013_Franklin U.S. Equity Index ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_50</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014013_Franklin U.S. Equity Index ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>150</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R151.htm</HtmlFileName>
      <LongName>040211 - Document - Shareholder Report, Average Annual Return (Details) 1014013_Franklin U.S. Equity Index ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_50</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014013_Franklin U.S. Equity Index ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>151</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R152.htm</HtmlFileName>
      <LongName>040212 - Document - Shareholder Report, Holdings (Details) 1014013_Franklin U.S. Equity Index ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_50</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014013_Franklin U.S. Equity Index ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>152</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R153.htm</HtmlFileName>
      <LongName>040214 - Document - Shareholder Report, Line Graph (Details) 9046791_Putnam International Stock ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_51</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 9046791_Putnam International Stock ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>153</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R154.htm</HtmlFileName>
      <LongName>040215 - Document - Shareholder Report, Average Annual Return (Details) 9046791_Putnam International Stock ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_51</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 9046791_Putnam International Stock ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>154</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R155.htm</HtmlFileName>
      <LongName>040216 - Document - Shareholder Report, Holdings (Details) 9046791_Putnam International Stock ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_51</Role>
      <ShortName>Shareholder Report, Holdings (Details) 9046791_Putnam International Stock ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>155</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R156.htm</HtmlFileName>
      <LongName>040218 - Document - Shareholder Report, Line Graph (Details) 374417_Templeton Emerging Markets Debt ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_52</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 374417_Templeton Emerging Markets Debt ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>156</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R157.htm</HtmlFileName>
      <LongName>040219 - Document - Shareholder Report, Average Annual Return (Details) 374417_Templeton Emerging Markets Debt ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_52</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 374417_Templeton Emerging Markets Debt ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>157</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R158.htm</HtmlFileName>
      <LongName>040220 - Document - Shareholder Report, Holdings (Details) 374417_Templeton Emerging Markets Debt ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_52</Role>
      <ShortName>Shareholder Report, Holdings (Details) 374417_Templeton Emerging Markets Debt ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>158</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R159.htm</HtmlFileName>
      <LongName>040222 - Document - Shareholder Report, Line Graph (Details) 9046793_Templeton International Insights ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_53</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 9046793_Templeton International Insights ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>159</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R160.htm</HtmlFileName>
      <LongName>040223 - Document - Shareholder Report, Average Annual Return (Details) 9046793_Templeton International Insights ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_53</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 9046793_Templeton International Insights ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>160</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R161.htm</HtmlFileName>
      <LongName>040224 - Document - Shareholder Report, Holdings (Details) 9046793_Templeton International Insights ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_53</Role>
      <ShortName>Shareholder Report, Holdings (Details) 9046793_Templeton International Insights ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>161</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R162.htm</HtmlFileName>
      <LongName>040226 - Document - Shareholder Report, Line Graph (Details) 1014057_Western Asset Bond ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_54</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 1014057_Western Asset Bond ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>162</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R163.htm</HtmlFileName>
      <LongName>040227 - Document - Shareholder Report, Average Annual Return (Details) 1014057_Western Asset Bond ETF_Single Class_TSR Annual {Single Class}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_54</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 1014057_Western Asset Bond ETF_Single Class_TSR Annual {Single Class}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>163</Position>
    </Report>
    <Report instance="ftetft-efp24612_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R164.htm</HtmlFileName>
      <LongName>040228 - Document - Shareholder Report, Holdings (Details) 1014057_Western Asset Bond ETF_Single Class_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_54</Role>
      <ShortName>Shareholder Report, Holdings (Details) 1014057_Western Asset Bond ETF_Single Class_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>164</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="N-CSR" isDefinitelyNotFs="true" isNcsr="true" isOEF="true" isRRorOEF="true" isUsgaap="true" original="ftetft-efp24612_ncsr.htm">ftetft-efp24612_ncsr.htm</File>
    <File>tsr-20260331.xsd</File>
    <File>tsr-20260331_def.xml</File>
    <File>tsr-20260331_lab.xml</File>
    <File>tsr-20260331_pre.xml</File>
  </InputFiles>
  <SupplementalFiles>
    <File>img043c07da2.gif</File>
    <File>img09a2c3071.gif</File>
    <File>img0e9dc59d3.jpg</File>
    <File>img11746_202406031205768.jpg</File>
    <File>img1867b5033.jpg</File>
    <File>img1988_202405161833219.jpg</File>
    <File>img1a80656d1.gif</File>
    <File>img1f5586be1.gif</File>
    <File>img28355ff71.gif</File>
    <File>img298c48881.gif</File>
    <File>img31be92b23.jpg</File>
    <File>img32ac86141.gif</File>
    <File>img357a25563.jpg</File>
    <File>img3a5908a12.gif</File>
    <File>img411319_202509231542383.jpg</File>
    <File>img448_202405131411777.jpg</File>
    <File>img450_202407221332340.jpg</File>
    <File>img456_202405131420813.jpg</File>
    <File>img4cc9e66e2.gif</File>
    <File>img4ed578e32.gif</File>
    <File>img50a867d31.gif</File>
    <File>img54a5ca8c3.jpg</File>
    <File>img54dbfe253.jpg</File>
    <File>img5b2189a01.gif</File>
    <File>img628d0e5f2.gif</File>
    <File>img641160022.gif</File>
    <File>img7ad546113.jpg</File>
    <File>img891026373.jpg</File>
    <File>img894b45213.jpg</File>
    <File>img93ba27b02.gif</File>
    <File>img93f1cb902.gif</File>
    <File>imgb24b12e01.gif</File>
    <File>imgbd32edf72.gif</File>
    <File>imgcd0b059b2.gif</File>
    <File>imgd7eca5bc3.jpg</File>
    <File>imgd95617792.gif</File>
    <File>imgdd9a03023.jpg</File>
    <File>imge4a9cde91.gif</File>
    <File>imgf66a6a011.gif</File>
    <File>ts7059img004.jpg</File>
    <File>ts7059img005.jpg</File>
    <File>ts7060img003.jpg</File>
    <File>ts7060img004.jpg</File>
    <File>ts7061img003.jpg</File>
    <File>ts7061img004.jpg</File>
    <File>ts7062img003.jpg</File>
    <File>ts7062img004.jpg</File>
    <File>ts7063img003.jpg</File>
    <File>ts7063img004.jpg</File>
    <File>ts7064img003.jpg</File>
    <File>ts7064img004.jpg</File>
    <File>ts7065img003.jpg</File>
    <File>ts7065img004.jpg</File>
    <File>ts7066img003.jpg</File>
    <File>ts7066img004.jpg</File>
    <File>ts7067img003.jpg</File>
    <File>ts7067img004.jpg</File>
    <File>ts7068img003.jpg</File>
    <File>ts7068img004.jpg</File>
    <File>ts7069img003.jpg</File>
    <File>ts7069img004.jpg</File>
    <File>ts7070img003.jpg</File>
    <File>ts7070img004.jpg</File>
    <File>ts7071img003.jpg</File>
    <File>ts7071img004.jpg</File>
    <File>ts7072img003.jpg</File>
    <File>ts7072img004.jpg</File>
    <File>ts7073img003.jpg</File>
    <File>ts7073img004.jpg</File>
    <File>ts7074img003.jpg</File>
    <File>ts7074img004.jpg</File>
    <File>ts7075img003.jpg</File>
    <File>ts7075img004.jpg</File>
    <File>ts7076img003.jpg</File>
    <File>ts7076img004.jpg</File>
    <File>ts7077img003.jpg</File>
    <File>ts7077img004.jpg</File>
    <File>ts7078img003.jpg</File>
    <File>ts7078img004.jpg</File>
    <File>ts7079img003.jpg</File>
    <File>ts7079img004.jpg</File>
    <File>ts7080img003.jpg</File>
    <File>ts7080img004.jpg</File>
    <File>ts7081img003.jpg</File>
    <File>ts7081img004.jpg</File>
    <File>ts7082img003.jpg</File>
    <File>ts7082img004.jpg</File>
    <File>ts7083img003.jpg</File>
    <File>ts7083img004.jpg</File>
    <File>ts7084img003.jpg</File>
    <File>ts7084img004.jpg</File>
    <File>ts7085img003.jpg</File>
    <File>ts7085img004.jpg</File>
    <File>ts7086img003.jpg</File>
    <File>ts7086img004.jpg</File>
    <File>ts7087img003.jpg</File>
    <File>ts7087img004.jpg</File>
    <File>ts7088img003.jpg</File>
    <File>ts7088img004.jpg</File>
    <File>ts7089img003.jpg</File>
    <File>ts7089img004.jpg</File>
    <File>ts7095img003.jpg</File>
    <File>ts7095img004.jpg</File>
    <File>ts7098img003.jpg</File>
    <File>ts7098img004.jpg</File>
    <File>ts7101img003.jpg</File>
    <File>ts7101img004.jpg</File>
    <File>ts7103img003.jpg</File>
    <File>ts7103img004.jpg</File>
    <File>ts7106img003.jpg</File>
    <File>ts7106img004.jpg</File>
    <File>ts7108img003.jpg</File>
    <File>ts7108img004.jpg</File>
    <File>ts7111img003.jpg</File>
    <File>ts7111img004.jpg</File>
    <File>ts7113img003.jpg</File>
    <File>ts7113img004.jpg</File>
    <File>ts7116img003.jpg</File>
    <File>ts7116img004.jpg</File>
    <File>ts7118img003.jpg</File>
    <File>ts7118img004.jpg</File>
    <File>ts7121img003.jpg</File>
    <File>ts7121img004.jpg</File>
    <File>ts7123img003.jpg</File>
    <File>ts7123img004.jpg</File>
    <File>ts7125img003.jpg</File>
    <File>ts7125img004.jpg</File>
    <File>ts7128img004.jpg</File>
    <File>ts7128img005.jpg</File>
    <File>ts7130img004.jpg</File>
    <File>ts7130img005.jpg</File>
    <File>ts7133img003.jpg</File>
    <File>ts7133img004.jpg</File>
    <File>ts7135img003.jpg</File>
    <File>ts7135img004.jpg</File>
    <File>ts7137img003.jpg</File>
    <File>ts7137img004.jpg</File>
    <File>ts7140img003.jpg</File>
    <File>ts7140img004.jpg</File>
    <File>ts7142img003.jpg</File>
    <File>ts7142img004.jpg</File>
    <File>ts7145img004.jpg</File>
    <File>ts7145img005.jpg</File>
    <File>ts7147img003.jpg</File>
    <File>ts7147img004.jpg</File>
    <File>ts7150img003.jpg</File>
    <File>ts7150img004.jpg</File>
  </SupplementalFiles>
  <BaseTaxonomies>
    <BaseTaxonomy items="108">http://fasb.org/us-gaap/2025</BaseTaxonomy>
    <BaseTaxonomy items="167">http://xbrl.sec.gov/dei/2025</BaseTaxonomy>
    <BaseTaxonomy items="3827">http://xbrl.sec.gov/oef/2025</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>false</HasCalculationLinkbase>
</FilingSummary>
