<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.25.4</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>400</ContextCount>
  <ElementCount>399</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>129</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>9</UnitCount>
  <MyReports>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>75000 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DocumentDocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>75010 - Statement - Condensed Interim Consolidated Balance Sheets (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_StatementCondensedInterimConsolidatedBalanceSheetsUnaudited</Role>
      <ShortName>Condensed Interim Consolidated Balance Sheets (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>75020 - Statement - Condensed Interim Consolidated Balance Sheets (Parenthetical) (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_StatementCondensedInterimConsolidatedBalanceSheetsParentheticalUnaudited</Role>
      <ShortName>Condensed Interim Consolidated Balance Sheets (Parenthetical) (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>75030 - Statement - Condensed Interim Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/StatementCondensedInterimConsolidatedStatementsOfOperationsAndComprehensiveIncomeLossUnaudited</Role>
      <ShortName>Condensed Interim Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>75060 - Statement - Condensed Interim Consolidated Statements of Shareholder's Equity (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_StatementCondensedInterimConsolidatedStatementsOfShareholderSEquityUnaudited</Role>
      <ShortName>Condensed Interim Consolidated Statements of Shareholder's Equity (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>75070 - Statement - Condensed Interim Consolidated Statements of Cash Flows (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_StatementCondensedInterimConsolidatedStatementsOfCashFlowsUnaudited</Role>
      <ShortName>Condensed Interim Consolidated Statements of Cash Flows (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>995410 - Disclosure - Pay vs Performance Disclosure</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/ecd/role/PvpDisclosure</Role>
      <ShortName>Pay vs Performance Disclosure</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>995445 - Disclosure - Insider Trading Arrangements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements</Role>
      <ShortName>Insider Trading Arrangements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>995455 - Disclosure - Description of Business</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureDescriptionOfBusiness</Role>
      <ShortName>Description of Business</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>995465 - Disclosure - Basis of Presentation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureBasisOfPresentation</Role>
      <ShortName>Basis of Presentation</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>995475 - Disclosure - Canopy USA</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/DisclosureCanopyUsa</Role>
      <ShortName>Canopy USA</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>995495 - Disclosure - Loss on Asset Impairment and Restructuring</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/DisclosureLossOnAssetImpairmentAndRestructuring</Role>
      <ShortName>Loss on Asset Impairment and Restructuring</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>995505 - Disclosure - Cash and Cash Equivalents</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureCashAndCashEquivalents</Role>
      <ShortName>Cash and Cash Equivalents</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>995515 - Disclosure - Short-term Investments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureShortTermInvestments</Role>
      <ShortName>Short-term Investments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>995525 - Disclosure - Amounts Receivable, Net</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureAmountsReceivableNet</Role>
      <ShortName>Amounts Receivable, Net</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>995535 - Disclosure - Inventory</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureInventory</Role>
      <ShortName>Inventory</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>995545 - Disclosure - Prepaid Expenses and Other Assets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosurePrepaidExpensesAndOtherAssets</Role>
      <ShortName>Prepaid Expenses and Other Assets</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>995565 - Disclosure - Other Investments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/DisclosureOtherInvestments</Role>
      <ShortName>Other Investments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>995575 - Disclosure - Property, Plant and Equipment</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosurePropertyPlantAndEquipment</Role>
      <ShortName>Property, Plant and Equipment</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>995585 - Disclosure - Intangible Assets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureIntangibleAssets</Role>
      <ShortName>Intangible Assets</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>995595 - Disclosure - Goodwill</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureGoodwill</Role>
      <ShortName>Goodwill</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>995605 - Disclosure - Other Accrued Expenses and Liabilities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureOtherAccruedExpensesAndLiabilities</Role>
      <ShortName>Other Accrued Expenses and Liabilities</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>995615 - Disclosure - Debt</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureDebt</Role>
      <ShortName>Debt</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>995625 - Disclosure - Other Liabilities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureOtherLiabilities</Role>
      <ShortName>Other Liabilities</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>995645 - Disclosure - Share Capital</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureShareCapital</Role>
      <ShortName>Share Capital</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>995655 - Disclosure - Share-Based Compensation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureShareBasedCompensation</Role>
      <ShortName>Share-Based Compensation</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>995665 - Disclosure - Accumulated Other Comprehensive Income (Loss)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureAccumulatedOtherComprehensiveIncomeLoss</Role>
      <ShortName>Accumulated Other Comprehensive Income (Loss)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>27</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>995675 - Disclosure - Noncontrolling Interests</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureNoncontrollingInterests</Role>
      <ShortName>Noncontrolling Interests</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>28</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>995685 - Disclosure - Fair Value of Financial Instruments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureFairValueOfFinancialInstruments</Role>
      <ShortName>Fair Value of Financial Instruments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>29</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>995695 - Disclosure - Revenue</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureRevenue</Role>
      <ShortName>Revenue</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>30</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>995705 - Disclosure - Other Income (Expense), Net</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureOtherIncomeExpenseNet</Role>
      <ShortName>Other Income (Expense), Net</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>31</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>995715 - Disclosure - Income Taxes</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureIncomeTaxes</Role>
      <ShortName>Income Taxes</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>32</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>995745 - Disclosure - Acreage Arrangement</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/DisclosureAcreageArrangement1</Role>
      <ShortName>Acreage Arrangement</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>33</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>995755 - Disclosure - Commitments and Contingencies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/DisclosureCommitmentsAndContingencies</Role>
      <ShortName>Commitments and Contingencies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>34</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>995765 - Disclosure - Segment Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureSegmentInformation</Role>
      <ShortName>Segment Information</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>35</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>995775 - Disclosure - Subsequent Events</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureSubsequentEvents</Role>
      <ShortName>Subsequent Events</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>36</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>995785 - Disclosure - Basis of Presentation (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/DisclosureBasisOfPresentationPolicies</Role>
      <ShortName>Basis of Presentation (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>37</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>995795 - Disclosure - Canopy USA (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/DisclosureCanopyUsaTables</Role>
      <ShortName>Canopy USA (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.canopygrowth.com/20251231/taxonomy/role/DisclosureCanopyUsa</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>995815 - Disclosure - Cash and Cash Equivalents (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureCashAndCashEquivalentsTables</Role>
      <ShortName>Cash and Cash Equivalents (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureCashAndCashEquivalents</ParentRole>
      <Position>39</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>995825 - Disclosure - Short-term Investments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureShortTermInvestmentsTables</Role>
      <ShortName>Short-term Investments (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureShortTermInvestments</ParentRole>
      <Position>40</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>995835 - Disclosure - Amounts Receivable, Net (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureAmountsReceivableNetTables</Role>
      <ShortName>Amounts Receivable, Net (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureAmountsReceivableNet</ParentRole>
      <Position>41</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>995845 - Disclosure - Inventory (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureInventoryTables</Role>
      <ShortName>Inventory (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureInventory</ParentRole>
      <Position>42</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>995855 - Disclosure - Prepaid Expenses and Other Assets (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosurePrepaidExpensesAndOtherAssetsTables</Role>
      <ShortName>Prepaid Expenses and Other Assets (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosurePrepaidExpensesAndOtherAssets</ParentRole>
      <Position>43</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>995875 - Disclosure - Other Investments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/DisclosureOtherInvestmentsTables</Role>
      <ShortName>Other Investments (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.canopygrowth.com/20251231/taxonomy/role/DisclosureOtherInvestments</ParentRole>
      <Position>44</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>995885 - Disclosure - Property, Plant and Equipment (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosurePropertyPlantAndEquipmentTables</Role>
      <ShortName>Property, Plant and Equipment (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosurePropertyPlantAndEquipment</ParentRole>
      <Position>45</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>995895 - Disclosure - Intangible Assets (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureIntangibleAssetsTables</Role>
      <ShortName>Intangible Assets (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureIntangibleAssets</ParentRole>
      <Position>46</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>995905 - Disclosure - Goodwill (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureGoodwillTables</Role>
      <ShortName>Goodwill (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureGoodwill</ParentRole>
      <Position>47</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>995915 - Disclosure - Other Accrued Expenses and Liabilities (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureOtherAccruedExpensesAndLiabilitiesTables</Role>
      <ShortName>Other Accrued Expenses and Liabilities (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureOtherAccruedExpensesAndLiabilities</ParentRole>
      <Position>48</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>995925 - Disclosure - Debt (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureDebtTables</Role>
      <ShortName>Debt (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureDebt</ParentRole>
      <Position>49</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>995935 - Disclosure - Other Liabilities (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureOtherLiabilitiesTables</Role>
      <ShortName>Other Liabilities (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureOtherLiabilities</ParentRole>
      <Position>50</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>995955 - Disclosure - Share Capital (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureShareCapitalTables</Role>
      <ShortName>Share Capital (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureShareCapital</ParentRole>
      <Position>51</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>995965 - Disclosure - Share-Based Compensation (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureShareBasedCompensationTables</Role>
      <ShortName>Share-Based Compensation (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureShareBasedCompensation</ParentRole>
      <Position>52</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>995975 - Disclosure - Accumulated Other Comprehensive Income (Loss) (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureAccumulatedOtherComprehensiveIncomeLossTables</Role>
      <ShortName>Accumulated Other Comprehensive Income (Loss) (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureAccumulatedOtherComprehensiveIncomeLoss</ParentRole>
      <Position>53</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>995985 - Disclosure - Noncontrolling Interests (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureNoncontrollingInterestsTables</Role>
      <ShortName>Noncontrolling Interests (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureNoncontrollingInterests</ParentRole>
      <Position>54</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>995995 - Disclosure - Fair Value of Financial Instruments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureFairValueOfFinancialInstrumentsTables</Role>
      <ShortName>Fair Value of Financial Instruments (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureFairValueOfFinancialInstruments</ParentRole>
      <Position>55</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>996005 - Disclosure - Revenue (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureRevenueTables</Role>
      <ShortName>Revenue (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureRevenue</ParentRole>
      <Position>56</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>996015 - Disclosure - Other Income (Expense), Net (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureOtherIncomeExpenseNetTables</Role>
      <ShortName>Other Income (Expense), Net (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureOtherIncomeExpenseNet</ParentRole>
      <Position>57</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>996045 - Disclosure - Segment Information (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureSegmentInformationTables</Role>
      <ShortName>Segment Information (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureSegmentInformation</ParentRole>
      <Position>58</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>996055 - Disclosure - Basis of Presentation - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureBasisOfPresentationAdditionalInformationDetails</Role>
      <ShortName>Basis of Presentation - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>59</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>996065 - Disclosure - Canopy USA - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/DisclosureCanopyUsaAdditionalInformationDetails</Role>
      <ShortName>Canopy USA - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>60</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>996075 - Disclosure - Canopy USA - Acreage Agreements - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/DisclosureCanopyUsaAcreageAgreementsAdditionalInformationDetails</Role>
      <ShortName>Canopy USA - Acreage Agreements - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>61</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>996085 - Disclosure - Canopy USA - Summary of Derecognized Assets and Liabilities Transferred (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/DisclosureCanopyUsaSummaryOfDerecognizedAssetsAndLiabilitiesTransferredDetails</Role>
      <ShortName>Canopy USA - Summary of Derecognized Assets and Liabilities Transferred (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>62</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>996135 - Disclosure - Loss on Asset Impairment and Restructuring - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/DisclosureLossOnAssetImpairmentAndRestructuringAdditionalInformationDetails</Role>
      <ShortName>Loss on Asset Impairment and Restructuring - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>63</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>996145 - Disclosure - Cash and Cash Equivalents - Components of Cash and Cash Equivalents (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureCashAndCashEquivalentsComponentsOfCashAndCashEquivalentsDetails</Role>
      <ShortName>Cash and Cash Equivalents - Components of Cash and Cash Equivalents (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>64</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>996155 - Disclosure - Short-term Investments - Components of Short-term Investments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureShortTermInvestmentsComponentsOfShortTermInvestmentsDetails</Role>
      <ShortName>Short-term Investments - Components of Short-term Investments (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>65</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>996165 - Disclosure - Short-term Investments - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureShortTermInvestmentsAdditionalInformationDetails</Role>
      <ShortName>Short-term Investments - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>66</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>996175 - Disclosure - Amounts Receivable, Net - Components of Amounts Receivable, Net (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureAmountsReceivableNetComponentsOfAmountsReceivableNetDetails</Role>
      <ShortName>Amounts Receivable, Net - Components of Amounts Receivable, Net (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>67</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>996185 - Disclosure - Amounts Receivable, Net - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureAmountsReceivableNetAdditionalInformationDetails</Role>
      <ShortName>Amounts Receivable, Net - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>68</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>996195 - Disclosure - Inventory - Components of Inventory (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureInventoryComponentsOfInventoryDetails</Role>
      <ShortName>Inventory - Components of Inventory (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>69</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R70.htm</HtmlFileName>
      <LongName>996205 - Disclosure - Inventory - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureInventoryAdditionalInformationDetails</Role>
      <ShortName>Inventory - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>70</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R71.htm</HtmlFileName>
      <LongName>996215 - Disclosure - Prepaid Expenses and Other Assets - Components of Prepaid Expenses and Other Assets (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/DisclosurePrepaidExpensesAndOtherAssetsComponentsOfPrepaidExpensesAndOtherAssetsDetails</Role>
      <ShortName>Prepaid Expenses and Other Assets - Components of Prepaid Expenses and Other Assets (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>71</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R72.htm</HtmlFileName>
      <LongName>996235 - Disclosure - Other Investments - Summary of Changes in Other Financial Assets (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/DisclosureOtherInvestmentsSummaryOfChangesInOtherFinancialAssetsDetails</Role>
      <ShortName>Other Investments - Summary of Changes in Other Financial Assets (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>72</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R73.htm</HtmlFileName>
      <LongName>996245 - Disclosure - Other Investments - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/DisclosureOtherInvestmentsAdditionalInformationDetails</Role>
      <ShortName>Other Investments - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>73</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R74.htm</HtmlFileName>
      <LongName>996255 - Disclosure - Property, Plant and Equipment - Schedule of Components of Property, Plant and Equipment (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosurePropertyPlantAndEquipmentScheduleOfComponentsOfPropertyPlantAndEquipmentDetails</Role>
      <ShortName>Property, Plant and Equipment - Schedule of Components of Property, Plant and Equipment (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>74</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R75.htm</HtmlFileName>
      <LongName>996265 - Disclosure - Property, Plant and Equipment - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosurePropertyPlantAndEquipmentAdditionalInformationDetails</Role>
      <ShortName>Property, Plant and Equipment - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>75</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R76.htm</HtmlFileName>
      <LongName>996275 - Disclosure - Intangible Assets - Summary of Components of Intangible Assets (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureIntangibleAssetsSummaryOfComponentsOfIntangibleAssetsDetails</Role>
      <ShortName>Intangible Assets - Summary of Components of Intangible Assets (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>76</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R77.htm</HtmlFileName>
      <LongName>996285 - Disclosure - Intangible Assets - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureIntangibleAssetsAdditionalInformationDetails</Role>
      <ShortName>Intangible Assets - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>77</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R78.htm</HtmlFileName>
      <LongName>996295 - Disclosure - Goodwill - Changes in Carrying Amount of Goodwill (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureGoodwillChangesInCarryingAmountOfGoodwillDetails</Role>
      <ShortName>Goodwill - Changes in Carrying Amount of Goodwill (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>78</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R79.htm</HtmlFileName>
      <LongName>996305 - Disclosure - Goodwill - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureGoodwillAdditionalInformationDetails</Role>
      <ShortName>Goodwill - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>79</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R80.htm</HtmlFileName>
      <LongName>996315 - Disclosure - Other Accrued Expenses and Liabilities - Components of Other Accrued Expenses and Liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureOtherAccruedExpensesAndLiabilitiesComponentsOfOtherAccruedExpensesAndLiabilitiesDetails</Role>
      <ShortName>Other Accrued Expenses and Liabilities - Components of Other Accrued Expenses and Liabilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>80</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R81.htm</HtmlFileName>
      <LongName>996325 - Disclosure - Debt - Summary of Components of Debt (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureDebtSummaryOfComponentsOfDebtDetails</Role>
      <ShortName>Debt - Summary of Components of Debt (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>81</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R82.htm</HtmlFileName>
      <LongName>996335 - Disclosure - Debt - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureDebtAdditionalInformationDetails</Role>
      <ShortName>Debt - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>82</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R83.htm</HtmlFileName>
      <LongName>996345 - Disclosure - Other Liabilities - Components of Other Liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureOtherLiabilitiesComponentsOfOtherLiabilitiesDetails</Role>
      <ShortName>Other Liabilities - Components of Other Liabilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>83</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R84.htm</HtmlFileName>
      <LongName>996385 - Disclosure - Share Capital - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureShareCapitalAdditionalInformationDetails</Role>
      <ShortName>Share Capital - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>84</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R85.htm</HtmlFileName>
      <LongName>996395 - Disclosure - Share Capital - Summary of Other Issuances and Share Capital Transactions (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/DisclosureShareCapitalSummaryOfOtherIssuancesAndShareCapitalTransactionsDetails</Role>
      <ShortName>Share Capital - Summary of Other Issuances and Share Capital Transactions (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>85</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R86.htm</HtmlFileName>
      <LongName>996405 - Disclosure - Share Capital - Summary of Warrants (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureShareCapitalSummaryOfWarrantsDetails</Role>
      <ShortName>Share Capital - Summary of Warrants (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>86</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R87.htm</HtmlFileName>
      <LongName>996425 - Disclosure - Share-Based Compensation - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureShareBasedCompensationAdditionalInformationDetails</Role>
      <ShortName>Share-Based Compensation - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>87</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R88.htm</HtmlFileName>
      <LongName>996435 - Disclosure - Share-Based Compensation - Summary of the Changes in Options Outstanding (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureShareBasedCompensationSummaryOfChangesInOptionsOutstandingDetails</Role>
      <ShortName>Share-Based Compensation - Summary of the Changes in Options Outstanding (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>88</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R89.htm</HtmlFileName>
      <LongName>996445 - Disclosure - Share-Based Compensation - Summary of Options Outstanding (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureShareBasedCompensationSummaryOfOptionsOutstandingDetails</Role>
      <ShortName>Share-Based Compensation - Summary of Options Outstanding (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>89</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R90.htm</HtmlFileName>
      <LongName>996455 - Disclosure - Share-Based Compensation - Summary of Assumptions Applied to Establish Fair Value of Options Granted Using Black-Scholes Option Pricing Model (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureShareBasedCompensationSummaryOfAssumptionsAppliedToEstablishFairValueOfOptionsGrantedUsingBlackScholesOptionPricingModelDetails</Role>
      <ShortName>Share-Based Compensation - Summary of Assumptions Applied to Establish Fair Value of Options Granted Using Black-Scholes Option Pricing Model (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>90</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R91.htm</HtmlFileName>
      <LongName>996465 - Disclosure - Share-Based Compensation - Summary of the Changes in RSUs and PSUs (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureShareBasedCompensationSummaryOfChangesInRsusAndPsusDetails</Role>
      <ShortName>Share-Based Compensation - Summary of the Changes in RSUs and PSUs (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>91</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R92.htm</HtmlFileName>
      <LongName>996475 - Disclosure - Accumulated Other Comprehensive Income (Loss) - Accumulated Other Comprehensive Income (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureAccumulatedOtherComprehensiveIncomeLossAccumulatedOtherComprehensiveIncomeDetails</Role>
      <ShortName>Accumulated Other Comprehensive Income (Loss) - Accumulated Other Comprehensive Income (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureAccumulatedOtherComprehensiveIncomeLossTables</ParentRole>
      <Position>92</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R93.htm</HtmlFileName>
      <LongName>996485 - Disclosure - Noncontrolling Interests - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/DisclosureNoncontrollingInterestsAdditionalInformationDetails</Role>
      <ShortName>Noncontrolling Interests - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>93</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R94.htm</HtmlFileName>
      <LongName>996495 - Disclosure - Noncontrolling Interests - Summary of Net Change in Noncontrolling Interest (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/DisclosureNoncontrollingInterestsSummaryOfNetChangeInNoncontrollingInterestDetails</Role>
      <ShortName>Noncontrolling Interests - Summary of Net Change in Noncontrolling Interest (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>94</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R95.htm</HtmlFileName>
      <LongName>996505 - Disclosure - Fair Value of Financial Instruments - Summary of Financial Assets and Liabilities Measured at Estimated Fair Value on a Recurring Basis (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureFairValueOfFinancialInstrumentsSummaryOfFinancialAssetsAndLiabilitiesMeasuredAtEstimatedFairValueOnRecurringBasisDetails</Role>
      <ShortName>Fair Value of Financial Instruments - Summary of Financial Assets and Liabilities Measured at Estimated Fair Value on a Recurring Basis (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>95</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R96.htm</HtmlFileName>
      <LongName>996525 - Disclosure - Fair Value of Financial Instruments - Summary of Valuation Techniques and Significant Unobservable Inputs in the Fair Value Measurement of Significant Level 3 Financial Instruments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureFairValueOfFinancialInstrumentsSummaryOfValuationTechniquesAndSignificantUnobservableInputsInFairValueMeasurementOfSignificantLevel3FinancialInstrumentsDetails</Role>
      <ShortName>Fair Value of Financial Instruments - Summary of Valuation Techniques and Significant Unobservable Inputs in the Fair Value Measurement of Significant Level 3 Financial Instruments (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>96</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R97.htm</HtmlFileName>
      <LongName>996535 - Disclosure - Revenue - Summary of Disaggregation of Revenue (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureRevenueSummaryOfDisaggregationOfRevenueDetails</Role>
      <ShortName>Revenue - Summary of Disaggregation of Revenue (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>97</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R98.htm</HtmlFileName>
      <LongName>996545 - Disclosure - Revenue - Summary of Disaggregation of Revenue (Parenthetical) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureRevenueSummaryOfDisaggregationOfRevenueParentheticalDetails</Role>
      <ShortName>Revenue - Summary of Disaggregation of Revenue (Parenthetical) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>98</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R99.htm</HtmlFileName>
      <LongName>996555 - Disclosure - Revenue - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureRevenueAdditionalInformationDetails</Role>
      <ShortName>Revenue - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>99</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R100.htm</HtmlFileName>
      <LongName>996565 - Disclosure - Other Income (Expense), Net - Schedule of Other Income (Expense), Net (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureOtherIncomeExpenseNetScheduleOfOtherIncomeExpenseNetDetails</Role>
      <ShortName>Other Income (Expense), Net - Schedule of Other Income (Expense), Net (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureOtherIncomeExpenseNetTables</ParentRole>
      <Position>100</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R101.htm</HtmlFileName>
      <LongName>996595 - Disclosure - Acreage Arrangement - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/DisclosureAcreageArrangementAdditionalInformationDetails</Role>
      <ShortName>Acreage Arrangement - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>101</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R102.htm</HtmlFileName>
      <LongName>996605 - Disclosure - Commitments and Contingencies - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/DisclosureCommitmentsAndContingenciesAdditionalInformationDetails</Role>
      <ShortName>Commitments and Contingencies - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>102</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R103.htm</HtmlFileName>
      <LongName>996615 - Disclosure - Segment Information - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureSegmentInformationAdditionalInformationDetails</Role>
      <ShortName>Segment Information - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>103</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R104.htm</HtmlFileName>
      <LongName>996625 - Disclosure - Segment Information - Summary of Reconciliation of Operating Profit (Loss) from Segments to Consolidated (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureSegmentInformationSummaryOfReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedDetails</Role>
      <ShortName>Segment Information - Summary of Reconciliation of Operating Profit (Loss) from Segments to Consolidated (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>104</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R105.htm</HtmlFileName>
      <LongName>996635 - Disclosure - Segment Information - Summary of Disaggregation of Net Revenue by Geographic Area (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/Role_DisclosureSegmentInformationSummaryOfDisaggregationOfNetRevenueByGeographicAreaDetails</Role>
      <ShortName>Segment Information - Summary of Disaggregation of Net Revenue by Geographic Area (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>105</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R106.htm</HtmlFileName>
      <LongName>996645 - Disclosure - Segment Information - Summary of Disaggregation of Property, Plant and Equipment by Geographic Area (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/DisclosureSegmentInformationSummaryOfDisaggregationOfPropertyPlantAndEquipmentByGeographicAreaDetails</Role>
      <ShortName>Segment Information - Summary of Disaggregation of Property, Plant and Equipment by Geographic Area (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>106</Position>
    </Report>
    <Report instance="cgc-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R107.htm</HtmlFileName>
      <LongName>996655 - Disclosure - Subsequent Events - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.canopygrowth.com/20251231/taxonomy/role/DisclosureSubsequentEventsAdditionalInformationDetails</Role>
      <ShortName>Subsequent Events - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>107</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" isDefinitelyFs="true" isUsgaap="true" original="cgc-20251231.htm">cgc-20251231.htm</File>
    <File>cgc-20251231.xsd</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy items="868">http://fasb.org/us-gaap/2025</BaseTaxonomy>
    <BaseTaxonomy items="29">http://xbrl.sec.gov/dei/2025</BaseTaxonomy>
    <BaseTaxonomy items="4">http://xbrl.sec.gov/ecd/2025</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>false</HasPresentationLinkbase>
  <HasCalculationLinkbase>false</HasCalculationLinkbase>
</FilingSummary>
