<?xml version="1.0" encoding="utf-8"?>
<FilingSummary xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <Version>2.2.0.25</Version>
  <ReportType />
  <MyReports>
    <Report>
      <IsDefault>true</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>00101 - Document - Document And Entity Information {Elements}</LongName>
      <ShortName>Document And Entity Information</ShortName>
      <Role>http://www.tiff.org/role/DocumentDocumentandEntityInformation</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R1.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>01102 - Document - Risk/Return Summary {Unlabeled} (TIFF Multi-Asset Fund)</LongName>
      <ShortName>Risk/Return Summary  (TIFF Multi-Asset Fund)</ShortName>
      <Role>http://www.tiff.org/role/RiskReturn_S000006387Member</Role>
      <ContainEmbeddedReports>true</ContainEmbeddedReports>
      <XmlFileName>R2.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>040000 - Disclosure - Risk/Return Detail Data {Elements}</LongName>
      <ShortName>Risk/Return Detail Data</ShortName>
      <Role>http://xbrl.sec.gov/rr/role/RiskReturnDetailData</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R9.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>06110 - Document - Risk/Return Summary {Unlabeled} (TIFF International Equity Fund)</LongName>
      <ShortName>Risk/Return Summary  (TIFF International Equity Fund)</ShortName>
      <Role>http://www.tiff.org/role/RiskReturn_S000006386Member</Role>
      <ContainEmbeddedReports>true</ContainEmbeddedReports>
      <XmlFileName>R10.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>06117 - Disclosure - Risk/Return Detail Data {Elements} (TIFF International Equity Fund)</LongName>
      <ShortName>Risk/Return Detail Data  (TIFF International Equity Fund)</ShortName>
      <Role>http://www.tiff.org/role/RiskReturnDetailData_S000006386Member</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R17.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>06118 - Document - Risk/Return Summary {Unlabeled} (TIFF US Equity Fund)</LongName>
      <ShortName>Risk/Return Summary  (TIFF US Equity Fund)</ShortName>
      <Role>http://www.tiff.org/role/RiskReturn_S000006389Member</Role>
      <ContainEmbeddedReports>true</ContainEmbeddedReports>
      <XmlFileName>R18.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>06125 - Disclosure - Risk/Return Detail Data {Elements} (TIFF US Equity Fund)</LongName>
      <ShortName>Risk/Return Detail Data  (TIFF US Equity Fund)</ShortName>
      <Role>http://www.tiff.org/role/RiskReturnDetailData_S000006389Member</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R25.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>06126 - Document - Risk/Return Summary {Unlabeled} (TIFF Short-Term Fund)</LongName>
      <ShortName>Risk/Return Summary  (TIFF Short-Term Fund)</ShortName>
      <Role>http://www.tiff.org/role/RiskReturn_S000006388Member</Role>
      <ContainEmbeddedReports>true</ContainEmbeddedReports>
      <XmlFileName>R26.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Sheet</ReportType>
      <LongName>06132 - Disclosure - Risk/Return Detail Data {Elements} (TIFF Short-Term Fund)</LongName>
      <ShortName>Risk/Return Detail Data  (TIFF Short-Term Fund)</ShortName>
      <Role>http://www.tiff.org/role/RiskReturnDetailData_S000006388Member</Role>
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName>R32.xml</XmlFileName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <ReportType>Book</ReportType>
      <LongName>All Reports</LongName>
      <ShortName>All Reports</ShortName>
      <Role />
      <ContainEmbeddedReports>false</ContainEmbeddedReports>
      <XmlFileName />
    </Report>
  </MyReports>
  <EntityCount>1</EntityCount>
  <ContextCount>20</ContextCount>
  <SegmentCount>19</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <UnitCount>2</UnitCount>
  <ElementCount>80</ElementCount>
  <FootnotesReported>true</FootnotesReported>
  <TuplesReported>false</TuplesReported>
  <ContextSummary>
    <ContextSummary>
      <ContextName>eol_0001144204-11-025107_STD_1_20110429_0_396770x-9994210_396840x-9994206</ContextName>
      <ElementCount>36</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>eol_0001144204-11-025107_STD_1_20110429_0_396770x-9994210_429423x-9994214</ContextName>
      <ElementCount>30</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>eol_0001144204-11-025107_STD_1_20110429_0_396770x-9994210_429555x-9998778</ContextName>
      <ElementCount>6</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>eol_0001144204-11-025107_STD_1_20110429_0_396770x-9994207_396840x-9994203</ContextName>
      <ElementCount>36</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>eol_0001144204-11-025107_STD_1_20110429_0_396770x-9994209_429555x-9998693</ContextName>
      <ElementCount>6</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>eol_0001144204-11-025107_STD_1_20110429_0_396770x-9994207_396840x-9994203_429423x-9994211</ContextName>
      <ElementCount>6</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>eol_0001144204-11-025107_STD_1_20110429_0_396770x-9994207_429423x-9994211</ContextName>
      <ElementCount>30</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>eol_0001144204-11-025107_STD_1_20110429_0_396770x-9994210_396840x-9994206_429423x-9994214</ContextName>
      <ElementCount>6</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>eol_0001144204-11-025107_STD_1_20110429_0_396770x-9994208_429423x-9994212</ContextName>
      <ElementCount>25</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>eol_0001144204-11-025107_STD_1_20110429_0_396770x-9994208_429555x-9998691</ContextName>
      <ElementCount>6</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>eol_0001144204-11-025107_STD_1_20110429_0_396770x-9994207_429555x-9998689</ContextName>
      <ElementCount>6</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>eol_0001144204-11-025107_STD_1_20110429_0_396770x-9994208_429555x-9998690</ContextName>
      <ElementCount>6</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>eol_0001144204-11-025107_STD_1_20110429_0_396770x-9994209_429555x-9998692</ContextName>
      <ElementCount>6</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>eol_0001144204-11-025107_STD_1_20110429_0_396770x-9994208_396840x-9994204</ContextName>
      <ElementCount>32</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>eol_0001144204-11-025107_STD_1_20110429_0_396770x-9994209_396840x-9994205_429423x-9994213</ContextName>
      <ElementCount>6</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>eol_0001144204-11-025107_STD_1_20110429_0_396770x-9994209_429555x-9998694</ContextName>
      <ElementCount>6</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>eol_0001144204-11-025107_STD_1_20110429_0</ContextName>
      <ElementCount>8</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>eol_0001144204-11-025107_STD_1_20110429_0_396770x-9994209_396840x-9994205</ContextName>
      <ElementCount>35</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>eol_0001144204-11-025107_STD_1_20110429_0_396770x-9994209_429423x-9994213</ContextName>
      <ElementCount>30</ElementCount>
    </ContextSummary>
    <ContextSummary>
      <ContextName>eol_0001144204-11-025107_STD_1_20110429_0_396770x-9994208_396840x-9994204_429423x-9994212</ContextName>
      <ElementCount>6</ElementCount>
    </ContextSummary>
  </ContextSummary>
  <BaseTaxonomies />
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
