<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.23.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>110</ContextCount>
  <ElementCount>212</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>46</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>6</UnitCount>
  <MyReports>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>0001 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/idr_DocumentDocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>0002 - Statement - CONDENSED CONSOLIDATED INTERIM BALANCE SHEETS (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/idr_BalanceSheets</Role>
      <ShortName>CONDENSED CONSOLIDATED INTERIM BALANCE SHEETS (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>0003 - Statement - CONDENSED CONSOLIDATED INTERIM BALANCE SHEETS (Unaudited) (Parentheticals)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/idr_BalanceSheetsParenthetical</Role>
      <ShortName>CONDENSED CONSOLIDATED INTERIM BALANCE SHEETS (Unaudited) (Parentheticals)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>0004 - Statement - CONDENSED CONSOLIDATED INTERIM STATEMENT OF COMPREHENSIVE LOSS (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/idr_StatementsOfOperations</Role>
      <ShortName>CONDENSED CONSOLIDATED INTERIM STATEMENT OF COMPREHENSIVE LOSS (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>0005 - Statement - CONDENSED CONSOLIDATED INTERIM STATEMENTS OF CASH FLOWS (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/idr_StatementsOfCashFlows</Role>
      <ShortName>CONDENSED CONSOLIDATED INTERIM STATEMENTS OF CASH FLOWS (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>0006 - Statement - CONDENSED CONSOLIDATED INTERIM STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/idr_StatementsOfChangesInShareholdersDeficit</Role>
      <ShortName>CONDENSED CONSOLIDATED INTERIM STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>0007 - Disclosure - Organization and Nature of Business</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/idr_DisclosureNote1OrganizationAndNatureOfBusiness</Role>
      <ShortName>Organization and Nature of Business</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>0008 - Disclosure - Summary of Accounting Policies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/idr_DisclosureNote2SummaryOfAccountingPolicies</Role>
      <ShortName>Summary of Accounting Policies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>0009 - Disclosure - Mineral Rights and Properties</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/idr_DisclosureNote5MineralProperties</Role>
      <ShortName>Mineral Rights and Properties</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>0010 - Disclosure - Related Party Transactions</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/idr_DisclosureNote4RelatedPartyTransactions</Role>
      <ShortName>Related Party Transactions</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>0011 - Disclosure - Property and Equipment</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/PropertyAndEquipment</Role>
      <ShortName>Property and Equipment</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>0012 - Disclosure - Accounts Payable and Accrued Liabilities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/AccountsPayableAndAccruedLiabilities</Role>
      <ShortName>Accounts Payable and Accrued Liabilities</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>0013 - Disclosure - Stockholders' Equity</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/idr_DisclosureNote9CommonStock</Role>
      <ShortName>Stockholders' Equity</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>0014 - Disclosure - Commitments and Contingencies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/CommitmentsAndContingencies</Role>
      <ShortName>Commitments and Contingencies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>0015 - Disclosure - Income Taxes</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/idr_DisclosureNote6IncomeTaxes</Role>
      <ShortName>Income Taxes</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>0016 - Disclosure - Subsequent Event(s)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/SubsequentEvents</Role>
      <ShortName>Subsequent Event(s)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>0017 - Disclosure - Summary of Accounting Policies (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/idr_DisclosureNote2SummaryOfAccountingPoliciesBasisOfPresentationPolicies</Role>
      <ShortName>Summary of Accounting Policies (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://www.dakotagoldcorp.com/role/idr_DisclosureNote2SummaryOfAccountingPolicies</ParentRole>
      <Position>17</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>0018 - Disclosure - Property and Equipment (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/PropertyAndEquipmentTables</Role>
      <ShortName>Property and Equipment (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.dakotagoldcorp.com/role/PropertyAndEquipment</ParentRole>
      <Position>18</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>0019 - Disclosure - Accounts Payable and Accrued Liabilities (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/AccountsPayableAndAccruedLiabilitiesTables</Role>
      <ShortName>Accounts Payable and Accrued Liabilities (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.dakotagoldcorp.com/role/AccountsPayableAndAccruedLiabilities</ParentRole>
      <Position>19</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>0020 - Disclosure - Stockholders' Equity (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/idr_DisclosureNote9CommonStockScheduleOfShareBasedCompensationStockOptionsActivityTables</Role>
      <ShortName>Stockholders' Equity (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.dakotagoldcorp.com/role/idr_DisclosureNote9CommonStock</ParentRole>
      <Position>20</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>0021 - Disclosure - Income Taxes (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/idr_DisclosureNote6IncomeTaxesScheduleOfComponentsOfIncomeTaxExpenseBenefitTables</Role>
      <ShortName>Income Taxes (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.dakotagoldcorp.com/role/idr_DisclosureNote6IncomeTaxes</ParentRole>
      <Position>21</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>0022 - Disclosure - Organization and Nature of Business (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/idr_DisclosureNote1OrganizationAndNatureOfBusinessDetails</Role>
      <ShortName>Organization and Nature of Business (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.dakotagoldcorp.com/role/idr_DisclosureNote1OrganizationAndNatureOfBusiness</ParentRole>
      <Position>22</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>0023 - Disclosure - Summary of Accounting Policies (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/SummaryOfAccountingPoliciesNarrativeDetails</Role>
      <ShortName>Summary of Accounting Policies (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.dakotagoldcorp.com/role/idr_DisclosureNote2SummaryOfAccountingPoliciesBasisOfPresentationPolicies</ParentRole>
      <Position>23</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>0024 - Disclosure - Mineral Rights and Properties (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/MineralRightsAndPropertiesDetails</Role>
      <ShortName>Mineral Rights and Properties (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.dakotagoldcorp.com/role/idr_DisclosureNote5MineralProperties</ParentRole>
      <Position>24</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>0025 - Disclosure - Related Party Transactions (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/idr_DisclosureNote4RelatedPartyTransactionsDetails</Role>
      <ShortName>Related Party Transactions (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.dakotagoldcorp.com/role/idr_DisclosureNote4RelatedPartyTransactions</ParentRole>
      <Position>25</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>0026 - Disclosure - Property and Equipment (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/PropertyAndEquipmentDetailTextuals</Role>
      <ShortName>Property and Equipment (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.dakotagoldcorp.com/role/PropertyAndEquipmentTables</ParentRole>
      <Position>26</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>0027 - Disclosure - Property and Equipment - Schedule of property and equipment (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/PropertyAndEquipmentDetails</Role>
      <ShortName>Property and Equipment - Schedule of property and equipment (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>27</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>0028 - Disclosure - Accounts Payable and Accrued Liabilities - Schedule of accounts payable and accrued liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/AccountsPayableAndAccruedLiabilitiesDetails</Role>
      <ShortName>Accounts Payable and Accrued Liabilities - Schedule of accounts payable and accrued liabilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>28</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>0029 - Disclosure - Stockholders' Equity (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/ShareholdersEquityNarrativeDetails</Role>
      <ShortName>Stockholders' Equity (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.dakotagoldcorp.com/role/idr_DisclosureNote9CommonStockScheduleOfShareBasedCompensationStockOptionsActivityTables</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>0030 - Disclosure - Stockholders' Equity - Schedule of DTRC's stock option activity and related information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/idr_DisclosureNote9CommonStockScheduleOfShareBasedCompensationStockOptionsActivityDetails</Role>
      <ShortName>Stockholders' Equity - Schedule of DTRC's stock option activity and related information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>30</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>0031 - Disclosure - Stockholders' Equity - Schedule of stock option activity and related information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/ShareholdersEquityScheduleOfSharebasedCompensationStockOptionsActivityDetails</Role>
      <ShortName>Stockholders' Equity - Schedule of stock option activity and related information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>31</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>0032 - Disclosure - Stockholders' Equity - Schedule of options outstanding (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/ShareholdersEquityScheduleOfSharebasedCompensationSummaryOfOptionsOutstandingDetails</Role>
      <ShortName>Stockholders' Equity - Schedule of options outstanding (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>32</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>0033 - Disclosure - Stockholders' Equity - Schedule of warrant activity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/idr_DisclosureNote9CommonStockDetails</Role>
      <ShortName>Stockholders' Equity - Schedule of warrant activity (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>33</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>0034 - Disclosure - Stockholders' Equity - Schedule of Company Stock Price Performance Relative to Index Performance (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/StockholdersEquityScheduleOfCompanyStockPricePerformanceRelativeToIndexPerformanceDetails</Role>
      <ShortName>Stockholders' Equity - Schedule of Company Stock Price Performance Relative to Index Performance (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>34</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>0035 - Disclosure - Stockholders' Equity - Schedule of RSU and PSU awards activity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/StockholdersEquityDetails</Role>
      <ShortName>Stockholders' Equity - Schedule of RSU and PSU awards activity (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>35</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>0036 - Disclosure - Income Taxes (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/IncomeTaxesNarrativeDetails</Role>
      <ShortName>Income Taxes (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.dakotagoldcorp.com/role/idr_DisclosureNote6IncomeTaxesScheduleOfComponentsOfIncomeTaxExpenseBenefitTables</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>0037 - Disclosure - Income Taxes - Schedule of components of income tax expense (benefit) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/idr_DisclosureNote6IncomeTaxesScheduleOfComponentsOfIncomeTaxExpenseBenefitDetails</Role>
      <ShortName>Income Taxes - Schedule of components of income tax expense (benefit) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>37</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>0038 - Disclosure - Income Taxes - Schedule of deferred tax assets and liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/idr_DisclosureNote6IncomeTaxesScheduleOfDeferredTaxAssetsAndLiabilitiesDetails</Role>
      <ShortName>Income Taxes - Schedule of deferred tax assets and liabilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>38</Position>
    </Report>
    <Report instance="form10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>0039 - Disclosure - Subsequent Event(s) (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.dakotagoldcorp.com/role/SubsequentEventsNarrativeDetails</Role>
      <ShortName>Subsequent Event(s) (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.dakotagoldcorp.com/role/SubsequentEvents</ParentRole>
      <Position>39</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="10-Q" original="form10q.htm">form10q.htm</File>
    <File>dc-20230331.xsd</File>
    <File>dc-20230331_cal.xml</File>
    <File>dc-20230331_def.xml</File>
    <File>dc-20230331_lab.xml</File>
    <File>dc-20230331_pre.xml</File>
    <File>exhibit31-1.htm</File>
    <File>exhibit31-2.htm</File>
    <File>exhibit32-1.htm</File>
    <File>exhibit32-2.htm</File>
  </InputFiles>
  <SupplementalFiles>
    <File>form10qxz001.jpg</File>
  </SupplementalFiles>
  <BaseTaxonomies>
    <BaseTaxonomy items="382">http://fasb.org/us-gaap/2022</BaseTaxonomy>
    <BaseTaxonomy items="31">http://xbrl.sec.gov/dei/2022</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
