<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.26.3</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>543</ContextCount>
  <ElementCount>40</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>61</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>3</UnitCount>
  <MyReports>
    <Report instance="pft-efp27836_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="pft-efp27836_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="pft-efp27836_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>040014 - Document - Shareholder Report, Line Graph (Details) 74300185400_Putnam Emerging Markets Equity Fund_Class A_TSR Annual {Class A}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_1</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 74300185400_Putnam Emerging Markets Equity Fund_Class A_TSR Annual {Class A}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="pft-efp27836_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>040015 - Document - Shareholder Report, Average Annual Return (Details) 74300185400_Putnam Emerging Markets Equity Fund_Class A_TSR Annual {Class A}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_1</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 74300185400_Putnam Emerging Markets Equity Fund_Class A_TSR Annual {Class A}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="pft-efp27836_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>040016 - Document - Shareholder Report, Holdings (Details) 74300185400_Putnam Emerging Markets Equity Fund_Class A_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_1</Role>
      <ShortName>Shareholder Report, Holdings (Details) 74300185400_Putnam Emerging Markets Equity Fund_Class A_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="pft-efp27836_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>040018 - Document - Shareholder Report, Line Graph (Details) 74300185400_Putnam Emerging Markets Equity Fund_Class C_TSR Annual {Class C}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_2</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 74300185400_Putnam Emerging Markets Equity Fund_Class C_TSR Annual {Class C}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="pft-efp27836_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>040019 - Document - Shareholder Report, Average Annual Return (Details) 74300185400_Putnam Emerging Markets Equity Fund_Class C_TSR Annual {Class C}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_2</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 74300185400_Putnam Emerging Markets Equity Fund_Class C_TSR Annual {Class C}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="pft-efp27836_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>040020 - Document - Shareholder Report, Holdings (Details) 74300185400_Putnam Emerging Markets Equity Fund_Class C_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_2</Role>
      <ShortName>Shareholder Report, Holdings (Details) 74300185400_Putnam Emerging Markets Equity Fund_Class C_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="pft-efp27836_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>040022 - Document - Shareholder Report, Line Graph (Details) 74300185400_Putnam Emerging Markets Equity Fund_Class R_TSR Annual {Class R}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_3</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 74300185400_Putnam Emerging Markets Equity Fund_Class R_TSR Annual {Class R}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="pft-efp27836_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>040023 - Document - Shareholder Report, Average Annual Return (Details) 74300185400_Putnam Emerging Markets Equity Fund_Class R_TSR Annual {Class R}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_3</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 74300185400_Putnam Emerging Markets Equity Fund_Class R_TSR Annual {Class R}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="pft-efp27836_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>040024 - Document - Shareholder Report, Holdings (Details) 74300185400_Putnam Emerging Markets Equity Fund_Class R_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_3</Role>
      <ShortName>Shareholder Report, Holdings (Details) 74300185400_Putnam Emerging Markets Equity Fund_Class R_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="pft-efp27836_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>040026 - Document - Shareholder Report, Line Graph (Details) 74300185400_Putnam Emerging Markets Equity Fund_Class R6_TSR Annual {Class R6}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_4</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 74300185400_Putnam Emerging Markets Equity Fund_Class R6_TSR Annual {Class R6}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="pft-efp27836_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>040027 - Document - Shareholder Report, Average Annual Return (Details) 74300185400_Putnam Emerging Markets Equity Fund_Class R6_TSR Annual {Class R6}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_4</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 74300185400_Putnam Emerging Markets Equity Fund_Class R6_TSR Annual {Class R6}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="pft-efp27836_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>040028 - Document - Shareholder Report, Holdings (Details) 74300185400_Putnam Emerging Markets Equity Fund_Class R6_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_4</Role>
      <ShortName>Shareholder Report, Holdings (Details) 74300185400_Putnam Emerging Markets Equity Fund_Class R6_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="pft-efp27836_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>040030 - Document - Shareholder Report, Line Graph (Details) 74300185400_Putnam Emerging Markets Equity Fund_Class Y_TSR Annual {Class Y}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_5</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 74300185400_Putnam Emerging Markets Equity Fund_Class Y_TSR Annual {Class Y}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="pft-efp27836_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>040031 - Document - Shareholder Report, Average Annual Return (Details) 74300185400_Putnam Emerging Markets Equity Fund_Class Y_TSR Annual {Class Y}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_5</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 74300185400_Putnam Emerging Markets Equity Fund_Class Y_TSR Annual {Class Y}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="pft-efp27836_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>040032 - Document - Shareholder Report, Holdings (Details) 74300185400_Putnam Emerging Markets Equity Fund_Class Y_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_5</Role>
      <ShortName>Shareholder Report, Holdings (Details) 74300185400_Putnam Emerging Markets Equity Fund_Class Y_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="pft-efp27836_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>040034 - Document - Shareholder Report, Line Graph (Details) 74200180200_Putnam Global Technology Fund_Class A_TSR Annual {Class A}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_6</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 74200180200_Putnam Global Technology Fund_Class A_TSR Annual {Class A}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="pft-efp27836_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>040035 - Document - Shareholder Report, Average Annual Return (Details) 74200180200_Putnam Global Technology Fund_Class A_TSR Annual {Class A}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_6</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 74200180200_Putnam Global Technology Fund_Class A_TSR Annual {Class A}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="pft-efp27836_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>040036 - Document - Shareholder Report, Holdings (Details) 74200180200_Putnam Global Technology Fund_Class A_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_6</Role>
      <ShortName>Shareholder Report, Holdings (Details) 74200180200_Putnam Global Technology Fund_Class A_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="pft-efp27836_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>040038 - Document - Shareholder Report, Line Graph (Details) 74200180200_Putnam Global Technology Fund_Class C_TSR Annual {Class C}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_7</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 74200180200_Putnam Global Technology Fund_Class C_TSR Annual {Class C}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="pft-efp27836_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>040039 - Document - Shareholder Report, Average Annual Return (Details) 74200180200_Putnam Global Technology Fund_Class C_TSR Annual {Class C}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_7</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 74200180200_Putnam Global Technology Fund_Class C_TSR Annual {Class C}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="pft-efp27836_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>040040 - Document - Shareholder Report, Holdings (Details) 74200180200_Putnam Global Technology Fund_Class C_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_7</Role>
      <ShortName>Shareholder Report, Holdings (Details) 74200180200_Putnam Global Technology Fund_Class C_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="pft-efp27836_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>040042 - Document - Shareholder Report, Line Graph (Details) 74200180200_Putnam Global Technology Fund_Class R_TSR Annual {Class R}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_8</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 74200180200_Putnam Global Technology Fund_Class R_TSR Annual {Class R}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="pft-efp27836_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>040043 - Document - Shareholder Report, Average Annual Return (Details) 74200180200_Putnam Global Technology Fund_Class R_TSR Annual {Class R}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_8</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 74200180200_Putnam Global Technology Fund_Class R_TSR Annual {Class R}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="pft-efp27836_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>040044 - Document - Shareholder Report, Holdings (Details) 74200180200_Putnam Global Technology Fund_Class R_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_8</Role>
      <ShortName>Shareholder Report, Holdings (Details) 74200180200_Putnam Global Technology Fund_Class R_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="pft-efp27836_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>040046 - Document - Shareholder Report, Line Graph (Details) 74200180200_Putnam Global Technology Fund_Class R6_TSR Annual {Class R6}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_9</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 74200180200_Putnam Global Technology Fund_Class R6_TSR Annual {Class R6}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>27</Position>
    </Report>
    <Report instance="pft-efp27836_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>040047 - Document - Shareholder Report, Average Annual Return (Details) 74200180200_Putnam Global Technology Fund_Class R6_TSR Annual {Class R6}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_9</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 74200180200_Putnam Global Technology Fund_Class R6_TSR Annual {Class R6}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>28</Position>
    </Report>
    <Report instance="pft-efp27836_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>040048 - Document - Shareholder Report, Holdings (Details) 74200180200_Putnam Global Technology Fund_Class R6_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_9</Role>
      <ShortName>Shareholder Report, Holdings (Details) 74200180200_Putnam Global Technology Fund_Class R6_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>29</Position>
    </Report>
    <Report instance="pft-efp27836_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>040050 - Document - Shareholder Report, Line Graph (Details) 74200180200_Putnam Global Technology Fund_Class Y_TSR Annual {Class Y}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportLineGraphDetails_10</Role>
      <ShortName>Shareholder Report, Line Graph (Details) 74200180200_Putnam Global Technology Fund_Class Y_TSR Annual {Class Y}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>30</Position>
    </Report>
    <Report instance="pft-efp27836_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>040051 - Document - Shareholder Report, Average Annual Return (Details) 74200180200_Putnam Global Technology Fund_Class Y_TSR Annual {Class Y}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportAverageAnnualReturnDetails_10</Role>
      <ShortName>Shareholder Report, Average Annual Return (Details) 74200180200_Putnam Global Technology Fund_Class Y_TSR Annual {Class Y}</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>31</Position>
    </Report>
    <Report instance="pft-efp27836_ncsr.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>040052 - Document - Shareholder Report, Holdings (Details) 74200180200_Putnam Global Technology Fund_Class Y_TSR Annual {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://tsr/role/ShareholderReportHoldingsDetails_10</Role>
      <ShortName>Shareholder Report, Holdings (Details) 74200180200_Putnam Global Technology Fund_Class Y_TSR Annual</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>32</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="pft-efp27836_ncsr.htm">pft-efp27836_ncsr.htm</File>
    <File>tsr-20260831.xsd</File>
    <File>tsr-20260831_def.xml</File>
    <File>tsr-20260831_lab.xml</File>
    <File>tsr-20260831_pre.xml</File>
  </InputFiles>
  <SupplementalFiles>
    <File>img11308_202405310907293.jpg</File>
    <File>img2195_202408190904545.jpg</File>
    <File>img2199_202405220716489.jpg</File>
    <File>img333186_202505270927280.jpg</File>
    <File>ts8388img004.jpg</File>
    <File>ts8388img005.jpg</File>
    <File>ts8389img004.jpg</File>
    <File>ts8389img005.jpg</File>
    <File>ts8390img004.jpg</File>
    <File>ts8390img005.jpg</File>
    <File>ts8391img004.jpg</File>
    <File>ts8391img005.jpg</File>
    <File>ts8392img004.jpg</File>
    <File>ts8392img005.jpg</File>
    <File>ts8534img004.jpg</File>
    <File>ts8534img005.jpg</File>
    <File>ts8535img004.jpg</File>
    <File>ts8535img005.jpg</File>
    <File>ts8536img004.jpg</File>
    <File>ts8536img005.jpg</File>
    <File>ts8537img004.jpg</File>
    <File>ts8537img005.jpg</File>
    <File>ts8538img004.jpg</File>
    <File>ts8538img005.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="866">http://xbrl.sec.gov/oef/2026</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>false</HasCalculationLinkbase>
</FilingSummary>
