<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.22.4</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>66</ContextCount>
  <ElementCount>80</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>37</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>2</UnitCount>
  <MyReports>
    <Report instance="f24407d0.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>000000 - Document - Document and Entity Information {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.vanguard.com/role/DocumentDocumentandEntityInformationElements</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory></MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="f24407d0.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>000019 - Disclosure - Risk/Return Detail Data {Elements} - Vanguard LifeStrategy Income Fund (Retail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.vanguard.com/role/DisclosureRiskReturnDetailDataElementsVanguardLifeStrategyIncomeFundRetail</Role>
      <ShortName>Risk/Return Detail Data- Vanguard LifeStrategy Income Fund (Retail)</ShortName>
      <MenuCategory></MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="f24407d0.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>000029 - Disclosure - Risk/Return Detail Data {Elements} - Vanguard LifeStrategy Conservative Growth Fund (Retail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.vanguard.com/role/DisclosureRiskReturnDetailDataElementsVanguardLifeStrategyConservativeGrowthFundRetail</Role>
      <ShortName>Risk/Return Detail Data- Vanguard LifeStrategy Conservative Growth Fund (Retail)</ShortName>
      <MenuCategory></MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="f24407d0.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>000039 - Disclosure - Risk/Return Detail Data {Elements} - Vanguard LifeStrategy Moderate Growth Fund (Retail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.vanguard.com/role/DisclosureRiskReturnDetailDataElementsVanguardLifeStrategyModerateGrowthFundRetail</Role>
      <ShortName>Risk/Return Detail Data- Vanguard LifeStrategy Moderate Growth Fund (Retail)</ShortName>
      <MenuCategory></MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="f24407d0.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>000049 - Disclosure - Risk/Return Detail Data {Elements} - Vanguard LifeStrategy Growth Fund (Retail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.vanguard.com/role/DisclosureRiskReturnDetailDataElementsVanguardLifeStrategyGrowthFundRetail</Role>
      <ShortName>Risk/Return Detail Data- Vanguard LifeStrategy Growth Fund (Retail)</ShortName>
      <MenuCategory></MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="f24407d0.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>000059 - Disclosure - Risk/Return Detail Data {Elements} - Vanguard STAR Fund (Retail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.vanguard.com/role/DisclosureRiskReturnDetailDataElementsVanguardSTARFundRetail</Role>
      <ShortName>Risk/Return Detail Data- Vanguard STAR Fund (Retail)</ShortName>
      <MenuCategory></MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="f24407d0.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>000069 - Disclosure - Risk/Return Detail Data {Elements} - Vanguard Total International Stock Index Fund (Investor)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.vanguard.com/role/DisclosureRiskReturnDetailDataElementsVanguardTotalInternationalStockIndexFundInvestor</Role>
      <ShortName>Risk/Return Detail Data- Vanguard Total International Stock Index Fund (Investor)</ShortName>
      <MenuCategory></MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="f24407d0.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>000079 - Disclosure - Risk/Return Detail Data {Elements} - Vanguard Total International Stock Index Fund (Admiral)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.vanguard.com/role/DisclosureRiskReturnDetailDataElementsVanguardTotalInternationalStockIndexFundAdmiral</Role>
      <ShortName>Risk/Return Detail Data- Vanguard Total International Stock Index Fund (Admiral)</ShortName>
      <MenuCategory></MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="f24407d0.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>000089 - Disclosure - Risk/Return Detail Data {Elements} - Vanguard Total International Stock Index Fund (ETF)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.vanguard.com/role/DisclosureRiskReturnDetailDataElementsVanguardTotalInternationalStockIndexFundETF</Role>
      <ShortName>Risk/Return Detail Data- Vanguard Total International Stock Index Fund (ETF)</ShortName>
      <MenuCategory></MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="f24407d0.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>000099 - Disclosure - Risk/Return Detail Data {Elements} - Vanguard Total International Stock Index Fund (Institutional)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.vanguard.com/role/DisclosureRiskReturnDetailDataElementsVanguardTotalInternationalStockIndexFundInstitutional</Role>
      <ShortName>Risk/Return Detail Data- Vanguard Total International Stock Index Fund (Institutional)</ShortName>
      <MenuCategory></MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="f24407d0.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>000109 - Disclosure - Risk/Return Detail Data {Elements} - Vanguard Total International Stock Index Fund (Institutional Select)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.vanguard.com/role/DisclosureRiskReturnDetailDataElementsVanguardTotalInternationalStockIndexFundInstitutionalSelect</Role>
      <ShortName>Risk/Return Detail Data- Vanguard Total International Stock Index Fund (Institutional Select)</ShortName>
      <MenuCategory></MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="f24407d0.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>040000 - Disclosure - Risk/Return Detail Data {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/rr/role/RiskReturnDetailData</Role>
      <ShortName>Risk/Return Detail Data</ShortName>
      <MenuCategory></MenuCategory>
      <Position>12</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <Logs>
    <Log type="Warning">[ix-0514-Hidden-Fact-Eligible-For-Transform] WARN: 7 fact(s) appearing in ix:hidden were eligible for transformation: rr:PortfolioTurnoverRate, rr:ProspectusDate -  f24407d0.htm 10, 12, 13, 14, 15, 16, 17</Log>
  </Logs>
  <InputFiles>
    <File doctype="485BPOS" original="f24407d0.htm">f24407d0.htm</File>
    <File>f24407d1.htm</File>
    <File>f24407d2.htm</File>
    <File>f24407d3.htm</File>
    <File>f24407d4.htm</File>
    <File>f24407d5.htm</File>
    <File>star-20230224.xsd</File>
    <File>star-20230224_cal.xml</File>
    <File>star-20230224_def.xml</File>
    <File>star-20230224_lab.xml</File>
    <File>star-20230224_pre.xml</File>
  </InputFiles>
  <SupplementalFiles>
    <File>flag.gif</File>
    <File>lcg088_9.jpg</File>
    <File>lg088_9.jpg</File>
    <File>li088_9.jpg</File>
    <File>lmg088_10.jpg</File>
    <File>s56_9.jpg</File>
    <File>tis113_8.jpg</File>
    <File>tis1869_9.jpg</File>
    <File>tis3369_9.jpg</File>
    <File>tis569_4.jpg</File>
    <File>tisii1969_7.jpg</File>
    <File>vanguard_2.jpg</File>
  </SupplementalFiles>
  <BaseTaxonomies>
    <BaseTaxonomy items="8">http://xbrl.sec.gov/dei/2021</BaseTaxonomy>
    <BaseTaxonomy items="774">http://xbrl.sec.gov/rr/2021</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
