<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.26.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>617</ContextCount>
  <ElementCount>368</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>140</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>4</UnitCount>
  <MyReports>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>0000001 - Document - Cover</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/Cover</Role>
      <ShortName>Cover</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>9952151 - Statement - CONDENSED CONSOLIDATED INCOME STATEMENT (UNAUDITED)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/CONDENSEDCONSOLIDATEDINCOMESTATEMENTUNAUDITED</Role>
      <ShortName>CONDENSED CONSOLIDATED INCOME STATEMENT (UNAUDITED)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>9952152 - Statement - CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (UNAUDITED)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/CONDENSEDCONSOLIDATEDSTATEMENTOFCOMPREHENSIVEINCOMEUNAUDITED</Role>
      <ShortName>CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (UNAUDITED)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>9952153 - Statement - CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (UNAUDITED) (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/CONDENSEDCONSOLIDATEDSTATEMENTOFCOMPREHENSIVEINCOMEUNAUDITEDParenthetical</Role>
      <ShortName>CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (UNAUDITED) (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>9952154 - Statement - CONDENSED CONSOLIDATED BALANCE SHEET (UNAUDITED)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETUNAUDITED</Role>
      <ShortName>CONDENSED CONSOLIDATED BALANCE SHEET (UNAUDITED)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>9952155 - Statement - CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN EQUITY (UNAUDITED)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/CONDENSEDCONSOLIDATEDSTATEMENTOFCHANGESINEQUITYUNAUDITED</Role>
      <ShortName>CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN EQUITY (UNAUDITED)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>9952156 - Statement - CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN EQUITY (UNAUDITED) (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/CONDENSEDCONSOLIDATEDSTATEMENTOFCHANGESINEQUITYUNAUDITEDParenthetical</Role>
      <ShortName>CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN EQUITY (UNAUDITED) (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>9952157 - Statement - CONDENSED CONSOLIDATED CASH FLOW STATEMENT (UNAUDITED)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/CONDENSEDCONSOLIDATEDCASHFLOWSTATEMENTUNAUDITED</Role>
      <ShortName>CONDENSED CONSOLIDATED CASH FLOW STATEMENT (UNAUDITED)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>9952158 - Statement - CONDENSED CONSOLIDATED CASH FLOW STATEMENT (UNAUDITED) (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/CONDENSEDCONSOLIDATEDCASHFLOWSTATEMENTUNAUDITEDParenthetical</Role>
      <ShortName>CONDENSED CONSOLIDATED CASH FLOW STATEMENT (UNAUDITED) (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>9952161 - Disclosure - Basis of preparation and accounting policies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/Basisofpreparationandaccountingpolicies</Role>
      <ShortName>Basis of preparation and accounting policies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>9952162 - Disclosure - Critical accounting judgements and key sources of estimation uncertainty</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/Criticalaccountingjudgementsandkeysourcesofestimationuncertainty</Role>
      <ShortName>Critical accounting judgements and key sources of estimation uncertainty</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>9952163 - Disclosure - Segmental analysis</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/Segmentalanalysis</Role>
      <ShortName>Segmental analysis</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>9952164 - Disclosure - Net fee and commission income</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/Netfeeandcommissionincome</Role>
      <ShortName>Net fee and commission income</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>9952165 - Disclosure - Insurance business</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/Insurancebusiness</Role>
      <ShortName>Insurance business</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>9952166 - Disclosure - Operating expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/Operatingexpenses</Role>
      <ShortName>Operating expenses</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>9952167 - Disclosure - Retirement benefit obligations</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/Retirementbenefitobligations</Role>
      <ShortName>Retirement benefit obligations</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>9952168 - Disclosure - Impairment</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/Impairment</Role>
      <ShortName>Impairment</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>9952169 - Disclosure - Tax</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/Tax</Role>
      <ShortName>Tax</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>9952170 - Disclosure - Fair values of financial assets and liabilities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/Fairvaluesoffinancialassetsandliabilities</Role>
      <ShortName>Fair values of financial assets and liabilities</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>9952171 - Disclosure - Derivative financial instruments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/Derivativefinancialinstruments</Role>
      <ShortName>Derivative financial instruments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>9952172 - Disclosure - Allowance for expected credit losses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/Allowanceforexpectedcreditlosses</Role>
      <ShortName>Allowance for expected credit losses</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>9952173 - Disclosure - Debt securities in issue</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/Debtsecuritiesinissue</Role>
      <ShortName>Debt securities in issue</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>9952174 - Disclosure - Provisions</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/Provisions</Role>
      <ShortName>Provisions</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>9952175 - Disclosure - Subordinated liabilities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/Subordinatedliabilities</Role>
      <ShortName>Subordinated liabilities</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>9952176 - Disclosure - Earnings per share</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/Earningspershare</Role>
      <ShortName>Earnings per share</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>9952177 - Disclosure - Dividends on ordinary shares and buyback</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/Dividendsonordinarysharesandbuyback</Role>
      <ShortName>Dividends on ordinary shares and buyback</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>9952178 - Disclosure - Contingent liabilities, commitments and guarantees</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/Contingentliabilitiescommitmentsandguarantees</Role>
      <ShortName>Contingent liabilities, commitments and guarantees</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>27</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>9955511 - Disclosure - Basis of preparation and accounting policies (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/BasisofpreparationandaccountingpoliciesPolicies</Role>
      <ShortName>Basis of preparation and accounting policies (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>28</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>9955512 - Disclosure - Segmental analysis (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/SegmentalanalysisTables</Role>
      <ShortName>Segmental analysis (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.lloydsbankinggroup.com/role/Segmentalanalysis</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>9955513 - Disclosure - Net fee and commission income (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/NetfeeandcommissionincomeTables</Role>
      <ShortName>Net fee and commission income (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.lloydsbankinggroup.com/role/Netfeeandcommissionincome</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>9955514 - Disclosure - Insurance business (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/InsurancebusinessTables</Role>
      <ShortName>Insurance business (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.lloydsbankinggroup.com/role/Insurancebusiness</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>9955515 - Disclosure - Operating expenses (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/OperatingexpensesTables</Role>
      <ShortName>Operating expenses (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.lloydsbankinggroup.com/role/Operatingexpenses</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>9955516 - Disclosure - Retirement benefit obligations (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/RetirementbenefitobligationsTables</Role>
      <ShortName>Retirement benefit obligations (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.lloydsbankinggroup.com/role/Retirementbenefitobligations</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>9955517 - Disclosure - Impairment (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/ImpairmentTables</Role>
      <ShortName>Impairment (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.lloydsbankinggroup.com/role/Impairment</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>9955518 - Disclosure - Tax (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/TaxTables</Role>
      <ShortName>Tax (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.lloydsbankinggroup.com/role/Tax</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>9955519 - Disclosure - Fair values of financial assets and liabilities (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/FairvaluesoffinancialassetsandliabilitiesTables</Role>
      <ShortName>Fair values of financial assets and liabilities (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.lloydsbankinggroup.com/role/Fairvaluesoffinancialassetsandliabilities</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>9955520 - Disclosure - Derivative financial instruments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/DerivativefinancialinstrumentsTables</Role>
      <ShortName>Derivative financial instruments (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.lloydsbankinggroup.com/role/Derivativefinancialinstruments</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>9955521 - Disclosure - Allowance for expected credit losses (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/AllowanceforexpectedcreditlossesTables</Role>
      <ShortName>Allowance for expected credit losses (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.lloydsbankinggroup.com/role/Allowanceforexpectedcreditlosses</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>9955522 - Disclosure - Debt securities in issue (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/DebtsecuritiesinissueTables</Role>
      <ShortName>Debt securities in issue (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.lloydsbankinggroup.com/role/Debtsecuritiesinissue</ParentRole>
      <Position>39</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>9955523 - Disclosure - Provisions (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/ProvisionsTables</Role>
      <ShortName>Provisions (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.lloydsbankinggroup.com/role/Provisions</ParentRole>
      <Position>40</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>9955524 - Disclosure - Subordinated liabilities (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/SubordinatedliabilitiesTables</Role>
      <ShortName>Subordinated liabilities (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.lloydsbankinggroup.com/role/Subordinatedliabilities</ParentRole>
      <Position>41</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>9955525 - Disclosure - Earnings per share (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/EarningspershareTables</Role>
      <ShortName>Earnings per share (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.lloydsbankinggroup.com/role/Earningspershare</ParentRole>
      <Position>42</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>9955526 - Disclosure - Dividends on ordinary shares and buyback (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/DividendsonordinarysharesandbuybackTables</Role>
      <ShortName>Dividends on ordinary shares and buyback (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.lloydsbankinggroup.com/role/Dividendsonordinarysharesandbuyback</ParentRole>
      <Position>43</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>9955527 - Disclosure - Segmental analysis - Schedule of Operating Segments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/SegmentalanalysisScheduleofOperatingSegmentsDetails</Role>
      <ShortName>Segmental analysis - Schedule of Operating Segments (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>44</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>9955528 - Disclosure - Segmental analysis - Schedule of Reconciliation of Underlying Basis to Statutory Results (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/SegmentalanalysisScheduleofReconciliationofUnderlyingBasistoStatutoryResultsDetails</Role>
      <ShortName>Segmental analysis - Schedule of Reconciliation of Underlying Basis to Statutory Results (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>45</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>9955529 - Disclosure - Net fee and commission income (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/NetfeeandcommissionincomeDetails</Role>
      <ShortName>Net fee and commission income (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.lloydsbankinggroup.com/role/NetfeeandcommissionincomeTables</ParentRole>
      <Position>46</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>9955530 - Disclosure - Insurance business - Schedule of insurance service result (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/InsurancebusinessScheduleofinsuranceserviceresultDetails</Role>
      <ShortName>Insurance business - Schedule of insurance service result (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>47</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>9955531 - Disclosure - Insurance business - Schedule of net finance income (expense) from insurance, participating investment and reinsurance contracts (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/InsurancebusinessScheduleofnetfinanceincomeexpensefrominsuranceparticipatinginvestmentandreinsurancecontractsDetails</Role>
      <ShortName>Insurance business - Schedule of net finance income (expense) from insurance, participating investment and reinsurance contracts (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>48</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>9955532 - Disclosure - Insurance business - Reconciliation of insurance balances for liability for remaining coverage and liability for incurred claims (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/InsurancebusinessReconciliationofinsurancebalancesforliabilityforremainingcoverageandliabilityforincurredclaimsDetails</Role>
      <ShortName>Insurance business - Reconciliation of insurance balances for liability for remaining coverage and liability for incurred claims (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>49</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>9955533 - Disclosure - Operating expenses (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/OperatingexpensesDetails</Role>
      <ShortName>Operating expenses (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.lloydsbankinggroup.com/role/OperatingexpensesTables</ParentRole>
      <Position>50</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>9955534 - Disclosure - Retirement benefit obligations - Schedule of Defined Benefit Scheme Obligations (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/RetirementbenefitobligationsScheduleofDefinedBenefitSchemeObligationsDetails</Role>
      <ShortName>Retirement benefit obligations - Schedule of Defined Benefit Scheme Obligations (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>51</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>9955535 - Disclosure - Retirement benefit obligations - Schedule of Movements in Net Post-Retirement Defined Benefit Scheme Asset (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/RetirementbenefitobligationsScheduleofMovementsinNetPostRetirementDefinedBenefitSchemeAssetDetails</Role>
      <ShortName>Retirement benefit obligations - Schedule of Movements in Net Post-Retirement Defined Benefit Scheme Asset (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>52</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>9955536 - Disclosure - Retirement benefit obligations - Schedule of Charges to Income Statement (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/RetirementbenefitobligationsScheduleofChargestoIncomeStatementDetails</Role>
      <ShortName>Retirement benefit obligations - Schedule of Charges to Income Statement (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>53</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>9955537 - Disclosure - Retirement benefit obligations - Schedule of Principal Assumptions Used in Valuations (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/RetirementbenefitobligationsScheduleofPrincipalAssumptionsUsedinValuationsDetails</Role>
      <ShortName>Retirement benefit obligations - Schedule of Principal Assumptions Used in Valuations (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>54</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>9955538 - Disclosure - Impairment - Schedule of Impairment (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/ImpairmentScheduleofImpairmentDetails</Role>
      <ShortName>Impairment - Schedule of Impairment (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>55</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>9955539 - Disclosure - Impairment - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/ImpairmentNarrativeDetails</Role>
      <ShortName>Impairment - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>56</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>9955540 - Disclosure - Tax - Schedule of relationship between tax expense and accounting profit (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/TaxScheduleofrelationshipbetweentaxexpenseandaccountingprofitDetails</Role>
      <ShortName>Tax - Schedule of relationship between tax expense and accounting profit (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>57</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>9955541 - Disclosure - Tax - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/TaxNarrativeDetails</Role>
      <ShortName>Tax - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>58</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>9955542 - Disclosure - Fair values of financial assets and liabilities - Schedule of Financial Assets Carried at Fair Value by Valuation Hierarchy (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/FairvaluesoffinancialassetsandliabilitiesScheduleofFinancialAssetsCarriedatFairValuebyValuationHierarchyDetails</Role>
      <ShortName>Fair values of financial assets and liabilities - Schedule of Financial Assets Carried at Fair Value by Valuation Hierarchy (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>59</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>9955543 - Disclosure - Fair values of financial assets and liabilities - Schedule of Financial Liabilities Carried at Fair Value by Valuation Hierarchy (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/FairvaluesoffinancialassetsandliabilitiesScheduleofFinancialLiabilitiesCarriedatFairValuebyValuationHierarchyDetails</Role>
      <ShortName>Fair values of financial assets and liabilities - Schedule of Financial Liabilities Carried at Fair Value by Valuation Hierarchy (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>60</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>9955544 - Disclosure - Fair values of financial assets and liabilities- Schedule of Movements in Level 3 Financial Assets Portfolio (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/FairvaluesoffinancialassetsandliabilitiesScheduleofMovementsinLevel3FinancialAssetsPortfolioDetails</Role>
      <ShortName>Fair values of financial assets and liabilities- Schedule of Movements in Level 3 Financial Assets Portfolio (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>61</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>9955545 - Disclosure - Fair values of financial assets and liabilities - Schedule of Movements in Level 3 Financial Liabilities Portfolio (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/FairvaluesoffinancialassetsandliabilitiesScheduleofMovementsinLevel3FinancialLiabilitiesPortfolioDetails</Role>
      <ShortName>Fair values of financial assets and liabilities - Schedule of Movements in Level 3 Financial Liabilities Portfolio (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>62</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>9955546 - Disclosure - Fair values of financial assets and liabilities - Schedule of Significant Unobservable Inputs Used in Fair Value Measurement (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/FairvaluesoffinancialassetsandliabilitiesScheduleofSignificantUnobservableInputsUsedinFairValueMeasurementDetails</Role>
      <ShortName>Fair values of financial assets and liabilities - Schedule of Significant Unobservable Inputs Used in Fair Value Measurement (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>63</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>9955547 - Disclosure - Fair values of financial assets and liabilities - Schedule of Sensitivity of Level 3 Valuations (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/FairvaluesoffinancialassetsandliabilitiesScheduleofSensitivityofLevel3ValuationsDetails</Role>
      <ShortName>Fair values of financial assets and liabilities - Schedule of Sensitivity of Level 3 Valuations (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>64</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>9955548 - Disclosure - Fair values of financial assets and liabilities - Schedule of Carrying Values and Fair Values of Financial Assets and Liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/FairvaluesoffinancialassetsandliabilitiesScheduleofCarryingValuesandFairValuesofFinancialAssetsandLiabilitiesDetails</Role>
      <ShortName>Fair values of financial assets and liabilities - Schedule of Carrying Values and Fair Values of Financial Assets and Liabilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>65</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>9955549 - Disclosure - Derivative financial instruments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/DerivativefinancialinstrumentsDetails</Role>
      <ShortName>Derivative financial instruments (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.lloydsbankinggroup.com/role/DerivativefinancialinstrumentsTables</ParentRole>
      <Position>66</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>9955550 - Disclosure - Allowance for expected credit losses - Schedule of impairment allowances (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/AllowanceforexpectedcreditlossesScheduleofimpairmentallowancesDetails</Role>
      <ShortName>Allowance for expected credit losses - Schedule of impairment allowances (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>67</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>9955551 - Disclosure - Allowance for expected credit losses - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/AllowanceforexpectedcreditlossesNarrativeDetails</Role>
      <ShortName>Allowance for expected credit losses - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>68</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>9955552 - Disclosure - Allowance for expected credit losses - Disclosure of Generation of Multiple Economic Assumptions by Quarter and by Year (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/AllowanceforexpectedcreditlossesDisclosureofGenerationofMultipleEconomicAssumptionsbyQuarterandbyYearDetails</Role>
      <ShortName>Allowance for expected credit losses - Disclosure of Generation of Multiple Economic Assumptions by Quarter and by Year (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>69</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R70.htm</HtmlFileName>
      <LongName>9955553 - Disclosure - Allowance for expected credit losses - Disclosure of movement in expected credit loss allowance (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/AllowanceforexpectedcreditlossesDisclosureofmovementinexpectedcreditlossallowanceDetails</Role>
      <ShortName>Allowance for expected credit losses - Disclosure of movement in expected credit loss allowance (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>70</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R71.htm</HtmlFileName>
      <LongName>9955554 - Disclosure - Debt securities in issue - Schedule of Debt Securities in Issue (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/DebtsecuritiesinissueScheduleofDebtSecuritiesinIssueDetails</Role>
      <ShortName>Debt securities in issue - Schedule of Debt Securities in Issue (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>71</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R72.htm</HtmlFileName>
      <LongName>9955555 - Disclosure - Debt securities in issue - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/DebtsecuritiesinissueNarrativeDetails</Role>
      <ShortName>Debt securities in issue - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>72</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R73.htm</HtmlFileName>
      <LongName>9955556 - Disclosure - Provisions - Schedule of Provisions and Liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/ProvisionsScheduleofProvisionsandLiabilitiesDetails</Role>
      <ShortName>Provisions - Schedule of Provisions and Liabilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>73</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R74.htm</HtmlFileName>
      <LongName>9955557 - Disclosure - Provisions - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/ProvisionsNarrativeDetails</Role>
      <ShortName>Provisions - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>74</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R75.htm</HtmlFileName>
      <LongName>9955558 - Disclosure - Subordinated liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/SubordinatedliabilitiesDetails</Role>
      <ShortName>Subordinated liabilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.lloydsbankinggroup.com/role/SubordinatedliabilitiesTables</ParentRole>
      <Position>75</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R76.htm</HtmlFileName>
      <LongName>9955559 - Disclosure - Earnings per share (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/EarningspershareDetails</Role>
      <ShortName>Earnings per share (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.lloydsbankinggroup.com/role/EarningspershareTables</ParentRole>
      <Position>76</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R77.htm</HtmlFileName>
      <LongName>9955560 - Disclosure - Dividends on ordinary shares and buyback (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/DividendsonordinarysharesandbuybackDetails</Role>
      <ShortName>Dividends on ordinary shares and buyback (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.lloydsbankinggroup.com/role/DividendsonordinarysharesandbuybackTables</ParentRole>
      <Position>77</Position>
    </Report>
    <Report instance="lyg-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R78.htm</HtmlFileName>
      <LongName>9955561 - Disclosure - Contingent liabilities, commitments and guarantees (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lloydsbankinggroup.com/role/ContingentliabilitiescommitmentsandguaranteesDetails</Role>
      <ShortName>Contingent liabilities, commitments and guarantees (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.lloydsbankinggroup.com/role/Contingentliabilitiescommitmentsandguarantees</ParentRole>
      <Position>78</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="6-K" isDefinitelyFs="true" isIfrs="true" original="lyg-20260630.htm">lyg-20260630.htm</File>
    <File>lyg-20260630.xsd</File>
    <File>lyg-20260630_cal.xml</File>
    <File>lyg-20260630_def.xml</File>
    <File>lyg-20260630_lab.xml</File>
    <File>lyg-20260630_pre.xml</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy items="1">http://fasb.org/srt/2025</BaseTaxonomy>
    <BaseTaxonomy items="8">http://xbrl.sec.gov/dei/2025</BaseTaxonomy>
    <BaseTaxonomy items="1821">https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
