<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.26.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>69</ContextCount>
  <ElementCount>24</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>58</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>3</UnitCount>
  <MyReports>
    <Report instance="lmpvet-efp26878_ncsrs.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="lmpvet-efp26878_ncsrs.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="lmpvet-efp26878_ncsrs.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>040016 - Document - Shareholder Report, Holdings (Details) LMA7500_Franklin Templeton Aggressive Model Portfolio_Class I_TSR SemiAnnual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_1</Role>
      <ShortName>Shareholder Report, Holdings (Details) LMA7500_Franklin Templeton Aggressive Model Portfolio_Class I_TSR SemiAnnual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="lmpvet-efp26878_ncsrs.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>040020 - Document - Shareholder Report, Holdings (Details) LMA7500_Franklin Templeton Aggressive Model Portfolio_Class II_TSR SemiAnnual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_2</Role>
      <ShortName>Shareholder Report, Holdings (Details) LMA7500_Franklin Templeton Aggressive Model Portfolio_Class II_TSR SemiAnnual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="lmpvet-efp26878_ncsrs.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>040024 - Document - Shareholder Report, Holdings (Details) LMA7600_Franklin Templeton Moderately Aggressive Model Portfolio_Class I_TSR SemiAnnual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_3</Role>
      <ShortName>Shareholder Report, Holdings (Details) LMA7600_Franklin Templeton Moderately Aggressive Model Portfolio_Class I_TSR SemiAnnual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="lmpvet-efp26878_ncsrs.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>040028 - Document - Shareholder Report, Holdings (Details) LMA7600_Franklin Templeton Moderately Aggressive Model Portfolio_Class II_TSR SemiAnnual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_4</Role>
      <ShortName>Shareholder Report, Holdings (Details) LMA7600_Franklin Templeton Moderately Aggressive Model Portfolio_Class II_TSR SemiAnnual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="lmpvet-efp26878_ncsrs.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>040032 - Document - Shareholder Report, Holdings (Details) LMA7700_Franklin Templeton Moderate Model Portfolio_Class I_TSR SemiAnnual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_5</Role>
      <ShortName>Shareholder Report, Holdings (Details) LMA7700_Franklin Templeton Moderate Model Portfolio_Class I_TSR SemiAnnual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="lmpvet-efp26878_ncsrs.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>040036 - Document - Shareholder Report, Holdings (Details) LMA7700_Franklin Templeton Moderate Model Portfolio_Class II_TSR SemiAnnual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_6</Role>
      <ShortName>Shareholder Report, Holdings (Details) LMA7700_Franklin Templeton Moderate Model Portfolio_Class II_TSR SemiAnnual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="lmpvet-efp26878_ncsrs.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>040040 - Document - Shareholder Report, Holdings (Details) LMA7800_Franklin Templeton Moderately Conservative Model Portfolio_Class I_TSR SemiAnnual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_7</Role>
      <ShortName>Shareholder Report, Holdings (Details) LMA7800_Franklin Templeton Moderately Conservative Model Portfolio_Class I_TSR SemiAnnual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="lmpvet-efp26878_ncsrs.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>040044 - Document - Shareholder Report, Holdings (Details) LMA7800_Franklin Templeton Moderately Conservative Model Portfolio_Class II_TSR SemiAnnual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_8</Role>
      <ShortName>Shareholder Report, Holdings (Details) LMA7800_Franklin Templeton Moderately Conservative Model Portfolio_Class II_TSR SemiAnnual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="lmpvet-efp26878_ncsrs.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>040048 - Document - Shareholder Report, Holdings (Details) LMA7900_Franklin Templeton Conservative Model Portfolio_Class I_TSR SemiAnnual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_9</Role>
      <ShortName>Shareholder Report, Holdings (Details) LMA7900_Franklin Templeton Conservative Model Portfolio_Class I_TSR SemiAnnual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="lmpvet-efp26878_ncsrs.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>040052 - Document - Shareholder Report, Holdings (Details) LMA7900_Franklin Templeton Conservative Model Portfolio_Class II_TSR SemiAnnual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_10</Role>
      <ShortName>Shareholder Report, Holdings (Details) LMA7900_Franklin Templeton Conservative Model Portfolio_Class II_TSR SemiAnnual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>12</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-CSRS" isDefinitelyNotFs="true" isNcsr="true" isOEF="true" isRRorOEF="true" isUsgaap="true" original="lmpvet-efp26878_ncsrs.htm">lmpvet-efp26878_ncsrs.htm</File>
    <File>tsr-20260630.xsd</File>
    <File>tsr-20260630_def.xml</File>
    <File>tsr-20260630_lab.xml</File>
    <File>tsr-20260630_pre.xml</File>
  </InputFiles>
  <SupplementalFiles>
    <File>img074c11e33.jpg</File>
    <File>img091f1ae81.gif</File>
    <File>img1988_202405161833219.jpg</File>
    <File>img372fc1702.gif</File>
    <File>img448_202405131411777.jpg</File>
    <File>img450_202407221332340.jpg</File>
    <File>ts7715img003.jpg</File>
    <File>ts7716img003.jpg</File>
    <File>ts7836img003.jpg</File>
    <File>ts7841img003.jpg</File>
    <File>ts7846img003.jpg</File>
    <File>ts7850img003.jpg</File>
    <File>ts7856img003.jpg</File>
    <File>ts7857img003.jpg</File>
    <File>ts7858img003.jpg</File>
    <File>ts7864img003.jpg</File>
  </SupplementalFiles>
  <BaseTaxonomies>
    <BaseTaxonomy items="20">http://fasb.org/us-gaap/2026</BaseTaxonomy>
    <BaseTaxonomy items="26">http://xbrl.sec.gov/dei/2026</BaseTaxonomy>
    <BaseTaxonomy items="188">http://xbrl.sec.gov/oef/2026</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>false</HasCalculationLinkbase>
</FilingSummary>
