<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:dei="http://xbrl.sec.gov/dei/2026"
  xmlns:ffd="http://xbrl.sec.gov/ffd/2026"
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      xlink:href="https://xbrl.sec.gov/ffd/2026/ffd-2026.xsd"
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    <context id="rc">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001649373</identifier>
        </entity>
        <period>
            <startDate>2026-09-08</startDate>
            <endDate>2026-09-08</endDate>
        </period>
    </context>
    <context id="offrl_1">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001649373</identifier>
            <segment>
                <xbrldi:typedMember dimension="ffd:OfferingAxis">
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        <period>
            <startDate>2026-09-08</startDate>
            <endDate>2026-09-08</endDate>
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    <context id="offrl_2">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001649373</identifier>
            <segment>
                <xbrldi:typedMember dimension="ffd:OfferingAxis">
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        </entity>
        <period>
            <startDate>2026-09-08</startDate>
            <endDate>2026-09-08</endDate>
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    </context>
    <unit id="USD">
        <measure>iso4217:USD</measure>
    </unit>
    <unit id="pure">
        <measure>pure</measure>
    </unit>
    <unit id="Shares">
        <measure>shares</measure>
    </unit>
    <ffd:FormTp contextRef="rc" id="ixv-369">F-3</ffd:FormTp>
    <ffd:SubmissnTp contextRef="rc" id="ixv-370">424B5</ffd:SubmissnTp>
    <ffd:FeeExhibitTp contextRef="rc" id="ixv-371">EX-FILING FEES</ffd:FeeExhibitTp>
    <ffd:RegnFileNb contextRef="rc" id="ixv-372">333-280673</ffd:RegnFileNb>
    <dei:EntityCentralIndexKey contextRef="rc" id="ixv-373">0001649373</dei:EntityCentralIndexKey>
    <dei:EntityRegistrantName contextRef="rc" id="ixv-374">SANTANDER UK GROUP HOLDINGS PLC</dei:EntityRegistrantName>
    <ffd:OfferingTableNa contextRef="rc" id="hiddenrcOfferingTableNa" xsi:nil="true"/>
    <ffd:OffsetTableNa contextRef="rc" id="hiddenrcOffsetTableNa">N/A</ffd:OffsetTableNa>
    <ffd:CombinedProspectusTableNa contextRef="rc" id="hiddenrcCombinedProspectusTableNa">N/A</ffd:CombinedProspectusTableNa>
    <ffd:FormTp contextRef="rc" id="ixv-411">F-3</ffd:FormTp>
    <dei:EntityRegistrantName contextRef="rc" id="ixv-412">SANTANDER UK GROUP HOLDINGS PLC</dei:EntityRegistrantName>
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    <ffd:OfferingSctyTp contextRef="offrl_1" id="ixv-414">Debt</ffd:OfferingSctyTp>
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    <ffd:Rule457rFlg contextRef="offrl_1" id="ixv-416">true</ffd:Rule457rFlg>
    <ffd:AmtSctiesRegd
      contextRef="offrl_1"
      decimals="0"
      id="ixv-417"
      unitRef="Shares">1000000000</ffd:AmtSctiesRegd>
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      contextRef="offrl_1"
      decimals="2"
      id="ixv-418"
      unitRef="USD">1000000000.00</ffd:MaxAggtOfferingPric>
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      contextRef="offrl_1"
      decimals="7"
      id="ixv-419"
      unitRef="pure">0.0001381</ffd:FeeRate>
    <ffd:FeeAmt
      contextRef="offrl_1"
      decimals="2"
      id="ixv-420"
      unitRef="USD">138100.00</ffd:FeeAmt>
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    <ffd:OfferingSctyTp contextRef="offrl_2" id="ixv-422">Debt</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="offrl_2" id="ixv-423">5.314% Fixed Rate/Floating Rate Notes due 2030 </ffd:OfferingSctyTitl>
    <ffd:Rule457rFlg contextRef="offrl_2" id="ixv-424">true</ffd:Rule457rFlg>
    <ffd:AmtSctiesRegd
      contextRef="offrl_2"
      decimals="0"
      id="ixv-425"
      unitRef="Shares">1500000000</ffd:AmtSctiesRegd>
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      contextRef="offrl_2"
      decimals="2"
      id="ixv-426"
      unitRef="USD">1500000000.00</ffd:MaxAggtOfferingPric>
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      contextRef="offrl_2"
      decimals="7"
      id="ixv-427"
      unitRef="pure">0.0001381</ffd:FeeRate>
    <ffd:FeeAmt
      contextRef="offrl_2"
      decimals="2"
      id="ixv-428"
      unitRef="USD">207150.00</ffd:FeeAmt>
    <ffd:TtlOfferingAmt contextRef="rc" decimals="2" id="ixv-429" unitRef="USD">2500000000.00</ffd:TtlOfferingAmt>
    <ffd:TtlFeeAmt contextRef="rc" decimals="2" id="ixv-430" unitRef="USD">345250.00</ffd:TtlFeeAmt>
    <ffd:TtlPrevslyPdAmt contextRef="rc" decimals="2" id="ixv-431" unitRef="USD">0.00</ffd:TtlPrevslyPdAmt>
    <ffd:TtlOffsetAmt contextRef="rc" decimals="2" id="ixv-432" unitRef="USD">0.00</ffd:TtlOffsetAmt>
    <ffd:NetFeeAmt contextRef="rc" decimals="2" id="ixv-433" unitRef="USD">345250.00</ffd:NetFeeAmt>
    <ffd:OfferingNote contextRef="offrl_1" id="ixv-434">The filing fee paid with this filing pursuant to Rule 457(r) under the Securities Act of 1933, as amended (the "Securities Act"), was originally deferred in accordance with Rule 456(b) under the Securities Act.</ffd:OfferingNote>
    <ffd:OfferingNote contextRef="offrl_2" id="ixv-435">See Offering Note 1</ffd:OfferingNote>
    <ffd:NrrtvMaxAggtOfferingPric contextRef="rc" decimals="2" id="ixv-436" unitRef="USD">2500000000.00</ffd:NrrtvMaxAggtOfferingPric>
    <ffd:FnlPrspctsFlg contextRef="rc" id="ixv-437">true</ffd:FnlPrspctsFlg>
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