<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.24.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>478</ContextCount>
  <ElementCount>519</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>192</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>12</UnitCount>
  <MyReports>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>100000 - Document - Cover</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/Cover</Role>
      <ShortName>Cover</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>100010 - Statement - Consolidated Statements of Financial Position</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/StatementsOfFinancialPosition</Role>
      <ShortName>Consolidated Statements of Financial Position</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>100020 - Statement - Consolidated Statements of Loss and Comprehensive Loss</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/StatementsOfLossAndComprehensiveLoss</Role>
      <ShortName>Consolidated Statements of Loss and Comprehensive Loss</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>100030 - Statement - Consolidated Statements of Changes in Equity</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/StatementsOfChangesInEquity</Role>
      <ShortName>Consolidated Statements of Changes in Equity</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>100040 - Statement - Consolidated Statements of Cash Flows</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/StatementsOfCashFlows</Role>
      <ShortName>Consolidated Statements of Cash Flows</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>100050 - Disclosure - Corporate Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/CorporateInformation</Role>
      <ShortName>Corporate Information</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>100060 - Disclosure - Basis of Preparation and Material Accounting Policies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureBasisOfPreparationAndMaterialAccountingPolicies</Role>
      <ShortName>Basis of Preparation and Material Accounting Policies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>100070 - Disclosure - Acquisition of Ely, Golden Valley and Abitibi</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureAcquisitionOfElyGoldenValleyAndAbitibi</Role>
      <ShortName>Acquisition of Ely, Golden Valley and Abitibi</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>100090 - Disclosure - Short-term investments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/Short-termInvestments</Role>
      <ShortName>Short-term investments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>100110 - Disclosure - Royalty and Other Mineral Interests</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureRoyaltyAndOtherMineralInterests1</Role>
      <ShortName>Royalty and Other Mineral Interests</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>100130 - Disclosure - Long-term investments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/Long-termInvestments</Role>
      <ShortName>Long-term investments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>100140 - Disclosure - Investment in associate</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureInvestmentInAssociate</Role>
      <ShortName>Investment in associate</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>100150 - Disclosure - Gold-linked Loan</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureGoldlinkedLoan</Role>
      <ShortName>Gold-linked Loan</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>100160 - Disclosure - Derivative liabilities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureDerivativeLiabilities1</Role>
      <ShortName>Derivative liabilities</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>100170 - Disclosure - Bank loan</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureBankLoan</Role>
      <ShortName>Bank loan</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>100180 - Disclosure - Convertible Debentures</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureConvertibleDebentures</Role>
      <ShortName>Convertible Debentures</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>100190 - Disclosure - Embedded Derivatives</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureEmbeddedDerivatives</Role>
      <ShortName>Embedded Derivatives</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>100200 - Disclosure - Income taxes</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureIncomeTaxes</Role>
      <ShortName>Income taxes</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>100210 - Disclosure - Issued capital</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureIssuedCapital1</Role>
      <ShortName>Issued capital</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>100220 - Disclosure - Revenue</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureRevenue</Role>
      <ShortName>Revenue</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>100230 - Disclosure - General and administrative expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureGeneralAndAdministrativeExpenses</Role>
      <ShortName>General and administrative expenses</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>100240 - Disclosure - Interest expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureInterestExpenses</Role>
      <ShortName>Interest expenses</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>100250 - Disclosure - Financial instruments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureFinancialInstruments</Role>
      <ShortName>Financial instruments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>100260 - Disclosure - Related party transactions</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureRelatedPartyTransactions1</Role>
      <ShortName>Related party transactions</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>100270 - Disclosure - Operating segments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureOperatingSegments</Role>
      <ShortName>Operating segments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>100280 - Disclosure - Subsequent events</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureSubsequentEvents</Role>
      <ShortName>Subsequent events</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>100290 - Disclosure - Basis of Preparation and Material Accounting Policies (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureBasisOfPreparationAndMaterialAccountingPoliciesPolicies</Role>
      <ShortName>Basis of Preparation and Material Accounting Policies (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://goldroyalty.com/20231231/taxonomy/role/DisclosureBasisOfPreparationAndMaterialAccountingPolicies</ParentRole>
      <Position>27</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>100300 - Disclosure - Basis of Preparation and Material Accounting Policies (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureBasisOfPreparationAndMaterialAccountingPoliciesTables</Role>
      <ShortName>Basis of Preparation and Material Accounting Policies (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://goldroyalty.com/20231231/taxonomy/role/DisclosureBasisOfPreparationAndMaterialAccountingPolicies</ParentRole>
      <Position>28</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>100310 - Disclosure - Acquisition of Ely, Golden Valley and Abitibi (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureAcquisitionOfElyGoldenValleyAndAbitibiTables</Role>
      <ShortName>Acquisition of Ely, Golden Valley and Abitibi (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://goldroyalty.com/20231231/taxonomy/role/DisclosureAcquisitionOfElyGoldenValleyAndAbitibi</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>100320 - Disclosure - Short-term investments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/Short-termInvestmentsTables</Role>
      <ShortName>Short-term investments (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://goldroyalty.com/20231231/taxonomy/role/Short-termInvestments</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>100330 - Disclosure - Royalty and other mineral interests (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureRoyaltyAndOtherMineralInterestsTables</Role>
      <ShortName>Royalty and other mineral interests (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <Position>31</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>100340 - Disclosure - Investment in associate (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureInvestmentInAssociateTables</Role>
      <ShortName>Investment in associate (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://goldroyalty.com/20231231/taxonomy/role/DisclosureInvestmentInAssociate</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>100350 - Disclosure - Gold-linked Loan (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureGoldlinkedLoanTables</Role>
      <ShortName>Gold-linked Loan (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://goldroyalty.com/20231231/taxonomy/role/DisclosureGoldlinkedLoan</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>100360 - Disclosure - Derivative liabilities (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureDerivativeLiabilitiesTables</Role>
      <ShortName>Derivative liabilities (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://goldroyalty.com/20231231/taxonomy/role/DisclosureDerivativeLiabilities1</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>100370 - Disclosure - Bank loan (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureBankLoanTables</Role>
      <ShortName>Bank loan (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://goldroyalty.com/20231231/taxonomy/role/DisclosureBankLoan</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>100380 - Disclosure - Convertible debentures (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureConvertibleDebenturesTables</Role>
      <ShortName>Convertible debentures (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <Position>36</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>100390 - Disclosure - Embedded Derivatives (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureEmbeddedDerivativesTables</Role>
      <ShortName>Embedded Derivatives (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://goldroyalty.com/20231231/taxonomy/role/DisclosureEmbeddedDerivatives</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>100400 - Disclosure - Income taxes (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureIncomeTaxesTables</Role>
      <ShortName>Income taxes (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://goldroyalty.com/20231231/taxonomy/role/DisclosureIncomeTaxes</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>100410 - Disclosure - Issued capital (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureIssuedCapitalTables</Role>
      <ShortName>Issued capital (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://goldroyalty.com/20231231/taxonomy/role/DisclosureIssuedCapital1</ParentRole>
      <Position>39</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>100420 - Disclosure - Revenue (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureRevenueTables</Role>
      <ShortName>Revenue (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://goldroyalty.com/20231231/taxonomy/role/DisclosureRevenue</ParentRole>
      <Position>40</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>100430 - Disclosure - General and Administrative Expenses (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureGeneralAndAdministrativeExpensesTables</Role>
      <ShortName>General and Administrative Expenses (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <Position>41</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>100440 - Disclosure - Interest expenses (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureInterestExpensesTables</Role>
      <ShortName>Interest expenses (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://goldroyalty.com/20231231/taxonomy/role/DisclosureInterestExpenses</ParentRole>
      <Position>42</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>100450 - Disclosure - Financial instruments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureFinancialInstrumentsTables</Role>
      <ShortName>Financial instruments (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://goldroyalty.com/20231231/taxonomy/role/DisclosureFinancialInstruments</ParentRole>
      <Position>43</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>100460 - Disclosure - Related party transactions (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureRelatedPartyTransactionsTables</Role>
      <ShortName>Related party transactions (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://goldroyalty.com/20231231/taxonomy/role/DisclosureRelatedPartyTransactions1</ParentRole>
      <Position>44</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>100470 - Disclosure - Operating segment (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureOperatingSegmentTables</Role>
      <ShortName>Operating segment (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://goldroyalty.com/20231231/taxonomy/role/DisclosureOperatingSegments</ParentRole>
      <Position>45</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>100480 - Disclosure - Summary of Gold Royalty Corp. and its Wholly-Owned Subsidiaries (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureSummaryOfGoldRoyaltyCorpAndItsWhollyownedSubsidiariesDetails</Role>
      <ShortName>Summary of Gold Royalty Corp. and its Wholly-Owned Subsidiaries (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>46</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>100490 - Disclosure - Summary of Financial Instruments At Fair Value (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureSummaryOfFinancialInstrumentsAtFairValueDetails</Role>
      <ShortName>Summary of Financial Instruments At Fair Value (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>47</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>100500 - Disclosure - Summary of Fair Value of Assets Acquired and Liabilities Assumed (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/SummaryOfFairValueOfAssetsAcquiredAndLiabilitiesAssumedDetails</Role>
      <ShortName>Summary of Fair Value of Assets Acquired and Liabilities Assumed (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>48</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>100510 - Disclosure - Summary of Fair Value of Assets Acquired and Liabilities Assumed (Details) (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/SummaryOfFairValueOfAssetsAcquiredAndLiabilitiesAssumedDetailsParenthetical</Role>
      <ShortName>Summary of Fair Value of Assets Acquired and Liabilities Assumed (Details) (Parenthetical)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>49</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>100520 - Disclosure - Acquisition of Ely, Golden Valley and Abitibi (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureAcquisitionOfElyGoldenValleyAndAbitibiDetailsNarrative</Role>
      <ShortName>Acquisition of Ely, Golden Valley and Abitibi (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://goldroyalty.com/20231231/taxonomy/role/DisclosureAcquisitionOfElyGoldenValleyAndAbitibiTables</ParentRole>
      <Position>50</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>100530 - Disclosure - Summary of Short-term investments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureSummaryOfShorttermInvestmentsDetails</Role>
      <ShortName>Summary of Short-term investments (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>51</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>100540 - Disclosure - Short-term investments (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/Short-termInvestmentsDetailsNarrative</Role>
      <ShortName>Short-term investments (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://goldroyalty.com/20231231/taxonomy/role/Short-termInvestmentsTables</ParentRole>
      <Position>52</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>100550 - Disclosure - Schedule of Royalty and Other Mineral Interests (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureScheduleOfRoyaltyAndOtherMineralInterestsDetails</Role>
      <ShortName>Schedule of Royalty and Other Mineral Interests (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>53</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>100560 - Disclosure - Royalty and Other Mineral Interests (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureRoyaltyAndOtherMineralInterestsDetailsNarrative</Role>
      <ShortName>Royalty and Other Mineral Interests (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://goldroyalty.com/20231231/taxonomy/role/DisclosureRoyaltyAndOtherMineralInterests1</ParentRole>
      <Position>54</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>100570 - Disclosure - Summary of Royalty Schedule (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureSummaryOfRoyaltyScheduleDetails</Role>
      <ShortName>Summary of Royalty Schedule (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>55</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>100580 - Disclosure - Summary of Royalty Schedule (Parenthetical) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureSummaryOfRoyaltyScheduleParentheticalDetails</Role>
      <ShortName>Summary of Royalty Schedule (Parenthetical) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>56</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>100590 - Disclosure - Summary of Selected Royalties Own by the Company (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/SummaryOfSelectedRoyaltiesOwnByCompanyDetails</Role>
      <ShortName>Summary of Selected Royalties Own by the Company (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>57</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>100600 - Disclosure - Long-term investments (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/Long-termInvestmentsDetailsNarrative</Role>
      <ShortName>Long-term investments (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://goldroyalty.com/20231231/taxonomy/role/Long-termInvestments</ParentRole>
      <Position>58</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>100610 - Disclosure - Investment in associate (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureInvestmentInAssociateDetailsNarrative</Role>
      <ShortName>Investment in associate (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://goldroyalty.com/20231231/taxonomy/role/DisclosureInvestmentInAssociateTables</ParentRole>
      <Position>59</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>100620 - Disclosure - Summary of Changes to Investment (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureSummaryOfChangesToInvestmentDetails</Role>
      <ShortName>Summary of Changes to Investment (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>60</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>100630 - Disclosure - Gold-linked Loan (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureGoldlinkedLoanDetailsNarrative</Role>
      <ShortName>Gold-linked Loan (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://goldroyalty.com/20231231/taxonomy/role/DisclosureGoldlinkedLoanTables</ParentRole>
      <Position>61</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>100640 - Disclosure - Gold-linked Loan - Summary Of Movement Of Gold-linked Loan (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureGoldlinkedLoanSummaryOfMovementOfGoldlinkedLoanDetails</Role>
      <ShortName>Gold-linked Loan - Summary Of Movement Of Gold-linked Loan (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>62</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>100650 - Disclosure - Summary of Movement in Derivative Liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureSummaryOfMovementInDerivativeLiabilitiesDetails</Role>
      <ShortName>Summary of Movement in Derivative Liabilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>63</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>100660 - Disclosure - Derivative liabilities (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureDerivativeLiabilitiesDetailsNarrative</Role>
      <ShortName>Derivative liabilities (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://goldroyalty.com/20231231/taxonomy/role/DisclosureDerivativeLiabilitiesTables</ParentRole>
      <Position>64</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>100670 - Disclosure - Derivative liabilities - Summary of fair value of share options (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureDerivativeLiabilitiesSummaryOfFairValueOfShareOptionsDetails</Role>
      <ShortName>Derivative liabilities - Summary of fair value of share options (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>65</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>100680 - Disclosure - Bank loan (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureBankLoanDetailsNarrative</Role>
      <ShortName>Bank loan (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://goldroyalty.com/20231231/taxonomy/role/DisclosureBankLoanTables</ParentRole>
      <Position>66</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>100690 - Disclosure - Schedule of Movement of Bank Loan (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureScheduleOfMovementOfBankLoanDetails</Role>
      <ShortName>Schedule of Movement of Bank Loan (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>67</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>100700 - Disclosure - Convertible Debentures (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureConvertibleDebenturesDetailsNarrative</Role>
      <ShortName>Convertible Debentures (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://goldroyalty.com/20231231/taxonomy/role/DisclosureConvertibleDebentures</ParentRole>
      <Position>68</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>100710 - Disclosure - Schedule of Movement of Debentures (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureScheduleOfMovementOfDebenturesDetails</Role>
      <ShortName>Schedule of Movement of Debentures (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>69</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R70.htm</HtmlFileName>
      <LongName>100720 - Disclosure - Embedded Derivatives (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureEmbeddedDerivativesDetailsNarrative</Role>
      <ShortName>Embedded Derivatives (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://goldroyalty.com/20231231/taxonomy/role/DisclosureEmbeddedDerivativesTables</ParentRole>
      <Position>70</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R71.htm</HtmlFileName>
      <LongName>100730 - Disclosure - Schedule of Movement of Embedded Derivatives (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureScheduleOfMovementOfEmbeddedDerivativesDetails</Role>
      <ShortName>Schedule of Movement of Embedded Derivatives (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>71</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R72.htm</HtmlFileName>
      <LongName>100740 - Disclosure - Summary of Reconciliation of Provision for Income Taxes Computed at Combined Canadian Federal and Provincial Statutory Rate to Provision for Income Taxes (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureSummaryOfReconciliationOfProvisionForIncomeTaxesComputedAtCombinedCanadianFederalAndProvincialStatutoryRateToProvisionForIncome</Role>
      <ShortName>Summary of Reconciliation of Provision for Income Taxes Computed at Combined Canadian Federal and Provincial Statutory Rate to Provision for Income Taxes (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>72</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R73.htm</HtmlFileName>
      <LongName>100750 - Disclosure - Components of Deferred Income Tax Assets and Liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureComponentsOfDeferredIncomeTaxAssetsAndLiabilitiesDetails</Role>
      <ShortName>Components of Deferred Income Tax Assets and Liabilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>73</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R74.htm</HtmlFileName>
      <LongName>100760 - Disclosure - Summary of Deductible Temporary Differences for Which No Deferred Tax Assets Recognized (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureSummaryOfDeductibleTemporaryDifferencesForWhichNoDeferredTaxAssetsRecognizedDetails</Role>
      <ShortName>Summary of Deductible Temporary Differences for Which No Deferred Tax Assets Recognized (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>74</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R75.htm</HtmlFileName>
      <LongName>100770 - Disclosure - Income taxes (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureIncomeTaxesDetailsNarrative</Role>
      <ShortName>Income taxes (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://goldroyalty.com/20231231/taxonomy/role/DisclosureIncomeTaxesTables</ParentRole>
      <Position>75</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R76.htm</HtmlFileName>
      <LongName>100780 - Disclosure - Issued capital (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureIssuedCapitalDetailsNarrative</Role>
      <ShortName>Issued capital (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://goldroyalty.com/20231231/taxonomy/role/DisclosureIssuedCapitalTables</ParentRole>
      <Position>76</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R77.htm</HtmlFileName>
      <LongName>100790 - Disclosure - Movements of RSUs (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureMovementsOfRsusDetails</Role>
      <ShortName>Movements of RSUs (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>77</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R78.htm</HtmlFileName>
      <LongName>100800 - Disclosure - Summary of Warrants and Share Options (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureSummaryOfWarrantsAndShareOptionsDetails</Role>
      <ShortName>Summary of Warrants and Share Options (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>78</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R79.htm</HtmlFileName>
      <LongName>100810 - Disclosure - Summary of Share Options Activities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureSummaryOfShareOptionsActivitiesDetails</Role>
      <ShortName>Summary of Share Options Activities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>79</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R80.htm</HtmlFileName>
      <LongName>100820 - Disclosure - Summary of Fair Value Assumptions (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureSummaryOfFairValueAssumptionsDetails</Role>
      <ShortName>Summary of Fair Value Assumptions (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>80</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R81.htm</HtmlFileName>
      <LongName>100830 - Disclosure - Summary of Range of Options Outstanding and Exercisable (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureSummaryOfRangeOfOptionsOutstandingAndExercisableDetails</Role>
      <ShortName>Summary of Range of Options Outstanding and Exercisable (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>81</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R82.htm</HtmlFileName>
      <LongName>100840 - Disclosure - Schedule of Revenue (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureScheduleOfRevenueDetails</Role>
      <ShortName>Schedule of Revenue (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>82</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R83.htm</HtmlFileName>
      <LongName>100850 - Disclosure - Revenue (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureRevenueDetailsNarrative</Role>
      <ShortName>Revenue (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://goldroyalty.com/20231231/taxonomy/role/DisclosureRevenueTables</ParentRole>
      <Position>83</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R84.htm</HtmlFileName>
      <LongName>100860 - Disclosure - Schedule of General and Administrative Expenses (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureScheduleOfGeneralAndAdministrativeExpensesDetails</Role>
      <ShortName>Schedule of General and Administrative Expenses (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>84</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R85.htm</HtmlFileName>
      <LongName>100870 - Disclosure - General and Administrative Expenses (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureGeneralAndAdministrativeExpensesDetailsNarrative</Role>
      <ShortName>General and Administrative Expenses (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://goldroyalty.com/20231231/taxonomy/role/DisclosureGeneralAndAdministrativeExpensesTables</ParentRole>
      <Position>85</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R86.htm</HtmlFileName>
      <LongName>100880 - Disclosure - Interest expense - Schedule of Interest expense (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureInterestExpenseScheduleOfInterestExpenseDetails</Role>
      <ShortName>Interest expense - Schedule of Interest expense (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>86</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R87.htm</HtmlFileName>
      <LongName>100890 - Disclosure - Financial Instruments - Summary of Financial Assets and Financial Liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureFinancialInstrumentsSummaryOfFinancialAssetsAndFinancialLiabilitiesDetails</Role>
      <ShortName>Financial Instruments - Summary of Financial Assets and Financial Liabilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>87</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R88.htm</HtmlFileName>
      <LongName>100900 - Disclosure - Financial instruments (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureFinancialInstrumentsDetailsNarrative</Role>
      <ShortName>Financial instruments (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://goldroyalty.com/20231231/taxonomy/role/DisclosureFinancialInstrumentsTables</ParentRole>
      <Position>88</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R89.htm</HtmlFileName>
      <LongName>100910 - Disclosure - Related party transactions (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureRelatedPartyTransactionsDetailsNarrative</Role>
      <ShortName>Related party transactions (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://goldroyalty.com/20231231/taxonomy/role/DisclosureRelatedPartyTransactionsTables</ParentRole>
      <Position>89</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R90.htm</HtmlFileName>
      <LongName>100920 - Disclosure - Related party transactions - Summary of Key Management Transactions (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureRelatedPartyTransactionsSummaryOfKeyManagementTransactionsDetails</Role>
      <ShortName>Related party transactions - Summary of Key Management Transactions (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>90</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R91.htm</HtmlFileName>
      <LongName>100930 - Disclosure - Operating segment - Summary of Non-current Assets by Geographical Areas (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/DisclosureOperatingSegmentSummaryOfNoncurrentAssetsByGeographicalAreasDetails</Role>
      <ShortName>Operating segment - Summary of Non-current Assets by Geographical Areas (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>91</Position>
    </Report>
    <Report instance="groy-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R92.htm</HtmlFileName>
      <LongName>100940 - Disclosure - Subsequent Events (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://goldroyalty.com/20231231/taxonomy/role/SubsequentEventsDetailsNarrative</Role>
      <ShortName>Subsequent Events (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>92</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="20-F" isDefinitelyFs="true" isIfrs="true" isUsgaap="true" original="groy-20231231.htm">groy-20231231.htm</File>
    <File>groy-20231231.xsd</File>
  </InputFiles>
  <SupplementalFiles>
    <File>img119055478_0.jpg</File>
    <File>img119055478_1.jpg</File>
    <File>img119055478_2.jpg</File>
    <File>img119055478_3.jpg</File>
    <File>img119055478_4.jpg</File>
    <File>img119055478_5.jpg</File>
  </SupplementalFiles>
  <BaseTaxonomies>
    <BaseTaxonomy items="1">http://fasb.org/us-gaap/2023</BaseTaxonomy>
    <BaseTaxonomy items="46">http://xbrl.sec.gov/dei/2023</BaseTaxonomy>
    <BaseTaxonomy items="887">https://xbrl.ifrs.org/taxonomy/2023-03-23/ifrs-full</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>false</HasPresentationLinkbase>
  <HasCalculationLinkbase>false</HasCalculationLinkbase>
</FilingSummary>
