<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xml:lang="en-US"
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:dei="http://xbrl.sec.gov/dei/2026"
  xmlns:ffd="http://xbrl.sec.gov/ffd/2026"
  xmlns:iso4217="http://www.xbrl.org/2003/iso4217"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:xbrldi="http://xbrl.org/2006/xbrldi"
  xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef
      xlink:href="https://xbrl.sec.gov/ffd/2026/ffd-2026.xsd"
      xlink:type="simple"/>
    <context id="c-1">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001371285</identifier>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-12-31</endDate>
        </period>
    </context>
    <context id="c-2">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001371285</identifier>
            <segment>
                <xbrldi:typedMember dimension="ffd:OfferingAxis">
                    <dei:lineNo>1</dei:lineNo>
                </xbrldi:typedMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-12-31</endDate>
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    </context>
    <unit id="shares">
        <measure>shares</measure>
    </unit>
    <unit id="usd">
        <measure>iso4217:USD</measure>
    </unit>
    <dei:EntityCentralIndexKey contextRef="c-1" id="f-1">0001371285</dei:EntityCentralIndexKey>
    <ffd:FormTp contextRef="c-1" id="f-2">S-3</ffd:FormTp>
    <ffd:SubmissnTp contextRef="c-1" id="f-3">S-3ASR</ffd:SubmissnTp>
    <ffd:FeeExhibitTp contextRef="c-1" id="f-4">EX-FILING FEES</ffd:FeeExhibitTp>
    <dei:EntityRegistrantName contextRef="c-1" id="f-5">TRUPANION, INC</dei:EntityRegistrantName>
    <ffd:OffsetTableNa contextRef="c-1" id="f-6">N/A</ffd:OffsetTableNa>
    <ffd:CombinedProspectusTableNa contextRef="c-1" id="f-7">N/A</ffd:CombinedProspectusTableNa>
    <ffd:OfferingSctyTp contextRef="c-2" id="f-8">Equity</ffd:OfferingSctyTp>
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    <ffd:Rule415a6Flg contextRef="c-2" id="f-10">true</ffd:Rule415a6Flg>
    <ffd:AmtSctiesRegd contextRef="c-2" decimals="0" id="f-11" unitRef="shares">3636364</ffd:AmtSctiesRegd>
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    <ffd:CfwdFormTp contextRef="c-2" id="f-13">S-3</ffd:CfwdFormTp>
    <ffd:CfwdPrrFileNb contextRef="c-2" id="f-14">333-275851</ffd:CfwdPrrFileNb>
    <ffd:CfwdPrrFctvDt contextRef="c-2" id="f-15">2023-12-01</ffd:CfwdPrrFctvDt>
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    <ffd:NetFeeAmt contextRef="c-1" decimals="2" id="f-18" unitRef="usd">0.00</ffd:NetFeeAmt>
    <ffd:TtlFeeAmt contextRef="c-1" decimals="2" id="f-19" unitRef="usd">0.00</ffd:TtlFeeAmt>
    <ffd:TtlPrevslyPdAmt contextRef="c-1" decimals="2" id="f-20" unitRef="usd">0.00</ffd:TtlPrevslyPdAmt>
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