<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.26.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>147</ContextCount>
  <ElementCount>236</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>53</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>4</UnitCount>
  <MyReports>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>000010 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_DocumentDocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>000020 - Statement - STATEMENTS OF FINANCIAL POSITION</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_StatementStatementsOfFinancialPosition</Role>
      <ShortName>STATEMENTS OF FINANCIAL POSITION</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>000030 - Statement - STATEMENTS OF NET LOSS AND COMPREHENSIVE LOSS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_StatementStatementsOfNetLossAndComprehensiveLoss</Role>
      <ShortName>STATEMENTS OF NET LOSS AND COMPREHENSIVE LOSS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>000040 - Statement - STATEMENTS OF CHANGES IN EQUITY</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_StatementStatementsOfChangesInEquity</Role>
      <ShortName>STATEMENTS OF CHANGES IN EQUITY</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>000050 - Statement - STATEMENTS OF CASH FLOWS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_StatementStatementsOfCashFlows</Role>
      <ShortName>STATEMENTS OF CASH FLOWS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>000070 - Disclosure - 1. CORPORATE INFORMATION</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure1CorporateInformation</Role>
      <ShortName>1. CORPORATE INFORMATION</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>000080 - Disclosure - 2. BASIS OF PRESENTATION</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure2BasisOfPresentation</Role>
      <ShortName>2. BASIS OF PRESENTATION</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>000090 - Disclosure - 3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformation</Role>
      <ShortName>3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>000100 - Disclosure - 4. ACCOUNTING STANDARDS ISSUED BUT NOT YET EFFECTIVE</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure4AccountingStandardsIssuedButNotYetEffective</Role>
      <ShortName>4. ACCOUNTING STANDARDS ISSUED BUT NOT YET EFFECTIVE</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>000110 - Disclosure - 5. EXPLORATION AND EVALUATION ASSETS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure5ExplorationAndEvaluationAssets</Role>
      <ShortName>5. EXPLORATION AND EVALUATION ASSETS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>000120 - Disclosure - 6. EQUIPMENT, VEHICLES AND FURNITURE</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure6EquipmentVehiclesAndFurniture</Role>
      <ShortName>6. EQUIPMENT, VEHICLES AND FURNITURE</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>000130 - Disclosure - 7. OFFICE LEASE RIGHT-OF-USE &amp; OFFICE LEASE LIABILITY</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiability</Role>
      <ShortName>7. OFFICE LEASE RIGHT-OF-USE &amp; OFFICE LEASE LIABILITY</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>000140 - Disclosure - 8. SHARE CAPITAL, OPTION BASED PAYMENTS &amp; CONTRIBUTED SURPLUS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplus</Role>
      <ShortName>8. SHARE CAPITAL, OPTION BASED PAYMENTS &amp; CONTRIBUTED SURPLUS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>000150 - Disclosure - 9. LOSS PER SHARE</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure9LossPerShare</Role>
      <ShortName>9. LOSS PER SHARE</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>000160 - Disclosure - 10. TRANSACTIONS WITH AND AMOUNTS OWING TO RELATED PARTIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure10TransactionsWithAndAmountsOwingToRelatedParties</Role>
      <ShortName>10. TRANSACTIONS WITH AND AMOUNTS OWING TO RELATED PARTIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>000170 - Disclosure - 11. SUPPLEMENTAL DISCLOSURE WITH RESPECT TO CASH FLOWS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure11SupplementalDisclosureWithRespectToCashFlows</Role>
      <ShortName>11. SUPPLEMENTAL DISCLOSURE WITH RESPECT TO CASH FLOWS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>000180 - Disclosure - 12. INCOME TAXES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure12IncomeTaxes</Role>
      <ShortName>12. INCOME TAXES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>000190 - Disclosure - 13. COMMITMENT</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure13Commitment</Role>
      <ShortName>13. COMMITMENT</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>000200 - Disclosure - 14. SEGMENTED INFORMATION</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure14SegmentedInformation</Role>
      <ShortName>14. SEGMENTED INFORMATION</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>000210 - Disclosure - 15. FINANCIAL INSTRUMENTS &amp; FINANCIAL RISK MANAGEMENT</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure15FinancialInstrumentsFinancialRiskManagement</Role>
      <ShortName>15. FINANCIAL INSTRUMENTS &amp; FINANCIAL RISK MANAGEMENT</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>000220 - Disclosure - 16. CAPITAL MANAGEMENT</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure16CapitalManagement</Role>
      <ShortName>16. CAPITAL MANAGEMENT</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>000230 - Disclosure - 17. SUBSEQUENT EVENTS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure17SubsequentEvents</Role>
      <ShortName>17. SUBSEQUENT EVENTS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>000240 - Disclosure - 2. BASIS OF PRESENTATION: (a) Statement of compliance (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure2BasisOfPresentationAStatementOfCompliancePolicies</Role>
      <ShortName>2. BASIS OF PRESENTATION: (a) Statement of compliance (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>000250 - Disclosure - 2. BASIS OF PRESENTATION: (b) Going concern of operations (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure2BasisOfPresentationBGoingConcernOfOperationsPolicies</Role>
      <ShortName>2. BASIS OF PRESENTATION: (b) Going concern of operations (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>000260 - Disclosure - 2. BASIS OF PRESENTATION: (c) Basis of Measurement (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure2BasisOfPresentationCBasisOfMeasurementPolicies</Role>
      <ShortName>2. BASIS OF PRESENTATION: (c) Basis of Measurement (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>000270 - Disclosure - 2. BASIS OF PRESENTATION: (d) Functional and presentation currency (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure2BasisOfPresentationDFunctionalAndPresentationCurrencyPolicies</Role>
      <ShortName>2. BASIS OF PRESENTATION: (d) Functional and presentation currency (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>000280 - Disclosure - 2. BASIS OF PRESENTATION: (e) Critical accounting judgements (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure2BasisOfPresentationECriticalAccountingJudgementsPolicies</Role>
      <ShortName>2. BASIS OF PRESENTATION: (e) Critical accounting judgements (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>27</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>000290 - Disclosure - 2. BASIS OF PRESENTATION: (f) Key sources of estimation uncertainty (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure2BasisOfPresentationFKeySourcesOfEstimationUncertaintyPolicies</Role>
      <ShortName>2. BASIS OF PRESENTATION: (f) Key sources of estimation uncertainty (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>28</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>000300 - Disclosure - 3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (a) Foreign currency translation (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationAForeignCurrencyTranslationPolicies</Role>
      <ShortName>3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (a) Foreign currency translation (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>29</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>000310 - Disclosure - 3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (b) Cash and cash equivalents (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationBCashAndCashEquivalentsPolicies</Role>
      <ShortName>3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (b) Cash and cash equivalents (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>30</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>000320 - Disclosure - 3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (c) Mineral property interests and Exploration and evaluation assets (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationCMineralPropertyInterestsAndExplorationAndEvaluationAssetsPolicies</Role>
      <ShortName>3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (c) Mineral property interests and Exploration and evaluation assets (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>31</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>000330 - Disclosure - 3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (d) Impairment (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationDImpairmentPolicies</Role>
      <ShortName>3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (d) Impairment (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>32</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>000340 - Disclosure - 3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (e) Restoration and close down provision (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationERestorationAndCloseDownProvisionPolicies</Role>
      <ShortName>3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (e) Restoration and close down provision (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>33</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>000350 - Disclosure - 3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (f) Equipment, vehicles and furniture (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationFEquipmentVehiclesAndFurniturePolicies</Role>
      <ShortName>3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (f) Equipment, vehicles and furniture (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>34</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>000360 - Disclosure - 3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (g) Option based payments (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationGOptionBasedPaymentsPolicies</Role>
      <ShortName>3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (g) Option based payments (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>35</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>000370 - Disclosure - 3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (h) Private placement unit offerings (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationHPrivatePlacementUnitOfferingsPolicies</Role>
      <ShortName>3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (h) Private placement unit offerings (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>36</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>000380 - Disclosure - 3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (i) Loss per share (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationILossPerSharePolicies</Role>
      <ShortName>3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (i) Loss per share (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>37</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>000390 - Disclosure - 3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (j) Income taxes (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationJIncomeTaxesPolicies</Role>
      <ShortName>3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (j) Income taxes (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>38</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>000400 - Disclosure - 3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (k) Financial instruments (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationKFinancialInstrumentsPolicies</Role>
      <ShortName>3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (k) Financial instruments (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>39</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>000410 - Disclosure - 3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (l) Equity instruments (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationLEquityInstrumentsPolicies</Role>
      <ShortName>3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (l) Equity instruments (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>40</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>000420 - Disclosure - 3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (m) Right-of-use assets and lease liabilities (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationMRightOfUseAssetsAndLeaseLiabilitiesPolicies</Role>
      <ShortName>3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (m) Right-of-use assets and lease liabilities (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>41</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>000430 - Disclosure - 3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (n) Provisions (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationNProvisionsPolicies</Role>
      <ShortName>3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (n) Provisions (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>42</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>000440 - Disclosure - 3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (o) Finance costs (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationOFinanceCostsPolicies</Role>
      <ShortName>3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (o) Finance costs (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>43</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>000450 - Disclosure - 2. BASIS OF PRESENTATION: (b) Going concern of operations: Schedule of working capital, loss and deficit (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure2BasisOfPresentationBGoingConcernOfOperationsScheduleOfWorkingCapitalLossAndDeficitTables</Role>
      <ShortName>2. BASIS OF PRESENTATION: (b) Going concern of operations: Schedule of working capital, loss and deficit (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.pacificbooker.com/20260131/role/idr_Disclosure2BasisOfPresentation</ParentRole>
      <Position>44</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>000460 - Disclosure - 3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (f) Equipment, vehicles and furniture: Schedule of annual depreciation of equipment, vehicles and furniture (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationFEquipmentVehiclesAndFurnitureScheduleOfAnnualDepreciationOfEquipmentVehiclesAndFurnitureTables</Role>
      <ShortName>3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (f) Equipment, vehicles and furniture: Schedule of annual depreciation of equipment, vehicles and furniture (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformation</ParentRole>
      <Position>45</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>000470 - Disclosure - 3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (m) Right-of-use assets and lease liabilities: Schedule of Expected life and residual values for the Company's right of use asset (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationMRightOfUseAssetsAndLeaseLiabilitiesScheduleOfExpectedLifeAndResidualValuesForTheCompanySRightOfUseAssetTables</Role>
      <ShortName>3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (m) Right-of-use assets and lease liabilities: Schedule of Expected life and residual values for the Company's right of use asset (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformation</ParentRole>
      <Position>46</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>000480 - Disclosure - 5. EXPLORATION AND EVALUATION ASSETS: Schedule of Morrison Claims Acquisition Cost (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure5ExplorationAndEvaluationAssetsScheduleOfMorrisonClaimsAcquisitionCostTables</Role>
      <ShortName>5. EXPLORATION AND EVALUATION ASSETS: Schedule of Morrison Claims Acquisition Cost (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <Position>47</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>000490 - Disclosure - 5. EXPLORATION AND EVALUATION ASSETS: Schedule of Morrison claims (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure5ExplorationAndEvaluationAssetsScheduleOfMorrisonClaimsTables</Role>
      <ShortName>5. EXPLORATION AND EVALUATION ASSETS: Schedule of Morrison claims (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <Position>48</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>000500 - Disclosure - 6. EQUIPMENT, VEHICLES AND FURNITURE: Schedule of Equipment, Vehicles and Furniture (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure6EquipmentVehiclesAndFurnitureScheduleOfEquipmentVehiclesAndFurnitureTables</Role>
      <ShortName>6. EQUIPMENT, VEHICLES AND FURNITURE: Schedule of Equipment, Vehicles and Furniture (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <Position>49</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>000510 - Disclosure - 7. OFFICE LEASE RIGHT-OF-USE &amp; OFFICE LEASE LIABILITY: Schedule of Right-of-use asset (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiabilityScheduleOfRightOfUseAssetTables</Role>
      <ShortName>7. OFFICE LEASE RIGHT-OF-USE &amp; OFFICE LEASE LIABILITY: Schedule of Right-of-use asset (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <Position>50</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>000520 - Disclosure - 7. OFFICE LEASE RIGHT-OF-USE &amp; OFFICE LEASE LIABILITY: Schedule of Minimum lease payments in respect of lease liability (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiabilityScheduleOfMinimumLeasePaymentsInRespectOfLeaseLiabilityTables</Role>
      <ShortName>7. OFFICE LEASE RIGHT-OF-USE &amp; OFFICE LEASE LIABILITY: Schedule of Minimum lease payments in respect of lease liability (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <Position>51</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>000530 - Disclosure - 7. OFFICE LEASE RIGHT-OF-USE &amp; OFFICE LEASE LIABILITY: Schedule of net change in the lease liability (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiabilityScheduleOfNetChangeInTheLeaseLiabilityTables</Role>
      <ShortName>7. OFFICE LEASE RIGHT-OF-USE &amp; OFFICE LEASE LIABILITY: Schedule of net change in the lease liability (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <Position>52</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>000540 - Disclosure - 8. SHARE CAPITAL, OPTION BASED PAYMENTS &amp; CONTRIBUTED SURPLUS: Schedule of Stock option transactions (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplusScheduleOfStockOptionTransactionsTables</Role>
      <ShortName>8. SHARE CAPITAL, OPTION BASED PAYMENTS &amp; CONTRIBUTED SURPLUS: Schedule of Stock option transactions (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <Position>53</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>000550 - Disclosure - 8. SHARE CAPITAL, OPTION BASED PAYMENTS &amp; CONTRIBUTED SURPLUS: Schedule of Stock options outstanding (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplusScheduleOfStockOptionsOutstandingTables</Role>
      <ShortName>8. SHARE CAPITAL, OPTION BASED PAYMENTS &amp; CONTRIBUTED SURPLUS: Schedule of Stock options outstanding (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <Position>54</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>000560 - Disclosure - 8. SHARE CAPITAL, OPTION BASED PAYMENTS &amp; CONTRIBUTED SURPLUS: Schedule of valuation of stock options granted (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplusScheduleOfValuationOfStockOptionsGrantedTables</Role>
      <ShortName>8. SHARE CAPITAL, OPTION BASED PAYMENTS &amp; CONTRIBUTED SURPLUS: Schedule of valuation of stock options granted (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <Position>55</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>000570 - Disclosure - 9. LOSS PER SHARE: Earnings Per Share (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure9LossPerShareEarningsPerShareTables</Role>
      <ShortName>9. LOSS PER SHARE: Earnings Per Share (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <Position>56</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>000580 - Disclosure - 10. TRANSACTIONS WITH AND AMOUNTS OWING TO RELATED PARTIES: Schedule of transactions with related parties (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure10TransactionsWithAndAmountsOwingToRelatedPartiesScheduleOfTransactionsWithRelatedPartiesTables</Role>
      <ShortName>10. TRANSACTIONS WITH AND AMOUNTS OWING TO RELATED PARTIES: Schedule of transactions with related parties (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <Position>57</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>000590 - Disclosure - 10. TRANSACTIONS WITH AND AMOUNTS OWING TO RELATED PARTIES: Schedule of option-based payments and compensation (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure10TransactionsWithAndAmountsOwingToRelatedPartiesScheduleOfOptionBasedPaymentsAndCompensationTables</Role>
      <ShortName>10. TRANSACTIONS WITH AND AMOUNTS OWING TO RELATED PARTIES: Schedule of option-based payments and compensation (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <Position>58</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>000600 - Disclosure - 11. SUPPLEMENTAL DISCLOSURE WITH RESPECT TO CASH FLOWS: Schedule of Cash Flow, Supplemental Disclosures (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure11SupplementalDisclosureWithRespectToCashFlowsScheduleOfCashFlowSupplementalDisclosuresTables</Role>
      <ShortName>11. SUPPLEMENTAL DISCLOSURE WITH RESPECT TO CASH FLOWS: Schedule of Cash Flow, Supplemental Disclosures (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <Position>59</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>000610 - Disclosure - 12. INCOME TAXES: Schedule of Income Tax Reconciliation (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure12IncomeTaxesScheduleOfIncomeTaxReconciliationTables</Role>
      <ShortName>12. INCOME TAXES: Schedule of Income Tax Reconciliation (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <Position>60</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>000620 - Disclosure - 12. INCOME TAXES: Schedule of Unrecognized deductible temporary differences (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure12IncomeTaxesScheduleOfUnrecognizedDeductibleTemporaryDifferencesTables</Role>
      <ShortName>12. INCOME TAXES: Schedule of Unrecognized deductible temporary differences (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <Position>61</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>000630 - Disclosure - 12. INCOME TAXES: Schedule of expiration of non-capital loss carry forwards (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure12IncomeTaxesScheduleOfExpirationOfNonCapitalLossCarryForwardsTables</Role>
      <ShortName>12. INCOME TAXES: Schedule of expiration of non-capital loss carry forwards (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <Position>62</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>000640 - Disclosure - 1. CORPORATE INFORMATION (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure1CorporateInformationDetails</Role>
      <ShortName>1. CORPORATE INFORMATION (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pacificbooker.com/20260131/role/idr_Disclosure1CorporateInformation</ParentRole>
      <Position>63</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>000650 - Disclosure - 2. BASIS OF PRESENTATION: (b) Going concern of operations: Schedule of working capital, loss and deficit (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure2BasisOfPresentationBGoingConcernOfOperationsScheduleOfWorkingCapitalLossAndDeficitDetails</Role>
      <ShortName>2. BASIS OF PRESENTATION: (b) Going concern of operations: Schedule of working capital, loss and deficit (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pacificbooker.com/20260131/role/idr_Disclosure2BasisOfPresentationBGoingConcernOfOperationsScheduleOfWorkingCapitalLossAndDeficitTables</ParentRole>
      <Position>64</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>000660 - Disclosure - 3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (f) Equipment, vehicles and furniture: Schedule of annual depreciation of equipment, vehicles and furniture (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationFEquipmentVehiclesAndFurnitureScheduleOfAnnualDepreciationOfEquipmentVehiclesAndFurnitureDetails</Role>
      <ShortName>3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (f) Equipment, vehicles and furniture: Schedule of annual depreciation of equipment, vehicles and furniture (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationFEquipmentVehiclesAndFurnitureScheduleOfAnnualDepreciationOfEquipmentVehiclesAndFurnitureTables</ParentRole>
      <Position>65</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>000670 - Disclosure - 3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (i) Loss per share (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationILossPerShareDetails</Role>
      <ShortName>3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (i) Loss per share (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationFEquipmentVehiclesAndFurnitureScheduleOfAnnualDepreciationOfEquipmentVehiclesAndFurnitureTables</ParentRole>
      <Position>66</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>000680 - Disclosure - 3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (m) Right-of-use assets and lease liabilities: Schedule of Expected life and residual values for the Company's right of use asset (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationMRightOfUseAssetsAndLeaseLiabilitiesScheduleOfExpectedLifeAndResidualValuesForTheCompanySRightOfUseAssetDetails</Role>
      <ShortName>3. SUMMARY OF MATERIAL ACCOUNTING POLICY INFORMATION: (m) Right-of-use assets and lease liabilities: Schedule of Expected life and residual values for the Company's right of use asset (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationFEquipmentVehiclesAndFurnitureScheduleOfAnnualDepreciationOfEquipmentVehiclesAndFurnitureTables</ParentRole>
      <Position>67</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>000690 - Disclosure - 5. EXPLORATION AND EVALUATION ASSETS: Schedule of Morrison Claims Acquisition Cost (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure5ExplorationAndEvaluationAssetsScheduleOfMorrisonClaimsAcquisitionCostDetails</Role>
      <ShortName>5. EXPLORATION AND EVALUATION ASSETS: Schedule of Morrison Claims Acquisition Cost (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pacificbooker.com/20260131/role/idr_Disclosure5ExplorationAndEvaluationAssetsScheduleOfMorrisonClaimsAcquisitionCostTables</ParentRole>
      <Position>68</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>000700 - Disclosure - 5. EXPLORATION AND EVALUATION ASSETS: Schedule of Morrison claims (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure5ExplorationAndEvaluationAssetsScheduleOfMorrisonClaimsDetails</Role>
      <ShortName>5. EXPLORATION AND EVALUATION ASSETS: Schedule of Morrison claims (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pacificbooker.com/20260131/role/idr_Disclosure5ExplorationAndEvaluationAssetsScheduleOfMorrisonClaimsAcquisitionCostTables</ParentRole>
      <Position>69</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R70.htm</HtmlFileName>
      <LongName>000710 - Disclosure - 6. EQUIPMENT, VEHICLES AND FURNITURE: Schedule of Equipment, Vehicles and Furniture (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure6EquipmentVehiclesAndFurnitureScheduleOfEquipmentVehiclesAndFurnitureDetails</Role>
      <ShortName>6. EQUIPMENT, VEHICLES AND FURNITURE: Schedule of Equipment, Vehicles and Furniture (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pacificbooker.com/20260131/role/idr_Disclosure6EquipmentVehiclesAndFurnitureScheduleOfEquipmentVehiclesAndFurnitureTables</ParentRole>
      <Position>70</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R71.htm</HtmlFileName>
      <LongName>000720 - Disclosure - 7. OFFICE LEASE RIGHT-OF-USE &amp; OFFICE LEASE LIABILITY (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiabilityDetails</Role>
      <ShortName>7. OFFICE LEASE RIGHT-OF-USE &amp; OFFICE LEASE LIABILITY (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pacificbooker.com/20260131/role/idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiabilityScheduleOfRightOfUseAssetTables</ParentRole>
      <Position>71</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R72.htm</HtmlFileName>
      <LongName>000730 - Disclosure - 7. OFFICE LEASE RIGHT-OF-USE &amp; OFFICE LEASE LIABILITY: Schedule of Right-of-use asset (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiabilityScheduleOfRightOfUseAssetDetails</Role>
      <ShortName>7. OFFICE LEASE RIGHT-OF-USE &amp; OFFICE LEASE LIABILITY: Schedule of Right-of-use asset (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pacificbooker.com/20260131/role/idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiabilityScheduleOfRightOfUseAssetTables</ParentRole>
      <Position>72</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R73.htm</HtmlFileName>
      <LongName>000740 - Disclosure - 7. OFFICE LEASE RIGHT-OF-USE &amp; OFFICE LEASE LIABILITY: Schedule of Minimum lease payments in respect of lease liability (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiabilityScheduleOfMinimumLeasePaymentsInRespectOfLeaseLiabilityDetails</Role>
      <ShortName>7. OFFICE LEASE RIGHT-OF-USE &amp; OFFICE LEASE LIABILITY: Schedule of Minimum lease payments in respect of lease liability (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pacificbooker.com/20260131/role/idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiabilityScheduleOfMinimumLeasePaymentsInRespectOfLeaseLiabilityTables</ParentRole>
      <Position>73</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R74.htm</HtmlFileName>
      <LongName>000750 - Disclosure - 7. OFFICE LEASE RIGHT-OF-USE &amp; OFFICE LEASE LIABILITY: Schedule of net change in the lease liability (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiabilityScheduleOfNetChangeInTheLeaseLiabilityDetails</Role>
      <ShortName>7. OFFICE LEASE RIGHT-OF-USE &amp; OFFICE LEASE LIABILITY: Schedule of net change in the lease liability (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pacificbooker.com/20260131/role/idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiabilityScheduleOfNetChangeInTheLeaseLiabilityTables</ParentRole>
      <Position>74</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R75.htm</HtmlFileName>
      <LongName>000760 - Disclosure - 8. SHARE CAPITAL, OPTION BASED PAYMENTS &amp; CONTRIBUTED SURPLUS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplusDetails</Role>
      <ShortName>8. SHARE CAPITAL, OPTION BASED PAYMENTS &amp; CONTRIBUTED SURPLUS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pacificbooker.com/20260131/role/idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplusScheduleOfStockOptionTransactionsTables</ParentRole>
      <Position>75</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R76.htm</HtmlFileName>
      <LongName>000770 - Disclosure - 8. SHARE CAPITAL, OPTION BASED PAYMENTS &amp; CONTRIBUTED SURPLUS: Schedule of Stock option transactions (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplusScheduleOfStockOptionTransactionsDetails</Role>
      <ShortName>8. SHARE CAPITAL, OPTION BASED PAYMENTS &amp; CONTRIBUTED SURPLUS: Schedule of Stock option transactions (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pacificbooker.com/20260131/role/idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplusScheduleOfStockOptionTransactionsTables</ParentRole>
      <Position>76</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R77.htm</HtmlFileName>
      <LongName>000780 - Disclosure - 8. SHARE CAPITAL, OPTION BASED PAYMENTS &amp; CONTRIBUTED SURPLUS: Schedule of Stock options outstanding (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplusScheduleOfStockOptionsOutstandingDetails</Role>
      <ShortName>8. SHARE CAPITAL, OPTION BASED PAYMENTS &amp; CONTRIBUTED SURPLUS: Schedule of Stock options outstanding (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pacificbooker.com/20260131/role/idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplusScheduleOfStockOptionTransactionsTables</ParentRole>
      <Position>77</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R78.htm</HtmlFileName>
      <LongName>000790 - Disclosure - 8. SHARE CAPITAL, OPTION BASED PAYMENTS &amp; CONTRIBUTED SURPLUS: Schedule of valuation of stock options granted (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplusScheduleOfValuationOfStockOptionsGrantedDetails</Role>
      <ShortName>8. SHARE CAPITAL, OPTION BASED PAYMENTS &amp; CONTRIBUTED SURPLUS: Schedule of valuation of stock options granted (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pacificbooker.com/20260131/role/idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplusScheduleOfValuationOfStockOptionsGrantedTables</ParentRole>
      <Position>78</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R79.htm</HtmlFileName>
      <LongName>000800 - Disclosure - 9. LOSS PER SHARE: Earnings Per Share (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure9LossPerShareEarningsPerShareDetails</Role>
      <ShortName>9. LOSS PER SHARE: Earnings Per Share (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pacificbooker.com/20260131/role/idr_Disclosure9LossPerShareEarningsPerShareTables</ParentRole>
      <Position>79</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R80.htm</HtmlFileName>
      <LongName>000810 - Disclosure - 10. TRANSACTIONS WITH AND AMOUNTS OWING TO RELATED PARTIES: Schedule of transactions with related parties (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure10TransactionsWithAndAmountsOwingToRelatedPartiesScheduleOfTransactionsWithRelatedPartiesDetails</Role>
      <ShortName>10. TRANSACTIONS WITH AND AMOUNTS OWING TO RELATED PARTIES: Schedule of transactions with related parties (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pacificbooker.com/20260131/role/idr_Disclosure10TransactionsWithAndAmountsOwingToRelatedPartiesScheduleOfTransactionsWithRelatedPartiesTables</ParentRole>
      <Position>80</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R81.htm</HtmlFileName>
      <LongName>000820 - Disclosure - 10. TRANSACTIONS WITH AND AMOUNTS OWING TO RELATED PARTIES: Schedule of option-based payments and compensation (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure10TransactionsWithAndAmountsOwingToRelatedPartiesScheduleOfOptionBasedPaymentsAndCompensationDetails</Role>
      <ShortName>10. TRANSACTIONS WITH AND AMOUNTS OWING TO RELATED PARTIES: Schedule of option-based payments and compensation (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pacificbooker.com/20260131/role/idr_Disclosure10TransactionsWithAndAmountsOwingToRelatedPartiesScheduleOfOptionBasedPaymentsAndCompensationTables</ParentRole>
      <Position>81</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R82.htm</HtmlFileName>
      <LongName>000830 - Disclosure - 11. SUPPLEMENTAL DISCLOSURE WITH RESPECT TO CASH FLOWS: Schedule of Cash Flow, Supplemental Disclosures (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure11SupplementalDisclosureWithRespectToCashFlowsScheduleOfCashFlowSupplementalDisclosuresDetails</Role>
      <ShortName>11. SUPPLEMENTAL DISCLOSURE WITH RESPECT TO CASH FLOWS: Schedule of Cash Flow, Supplemental Disclosures (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pacificbooker.com/20260131/role/idr_Disclosure11SupplementalDisclosureWithRespectToCashFlowsScheduleOfCashFlowSupplementalDisclosuresTables</ParentRole>
      <Position>82</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R83.htm</HtmlFileName>
      <LongName>000840 - Disclosure - 12. INCOME TAXES: Schedule of Income Tax Reconciliation (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure12IncomeTaxesScheduleOfIncomeTaxReconciliationDetails</Role>
      <ShortName>12. INCOME TAXES: Schedule of Income Tax Reconciliation (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pacificbooker.com/20260131/role/idr_Disclosure12IncomeTaxesScheduleOfIncomeTaxReconciliationTables</ParentRole>
      <Position>83</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R84.htm</HtmlFileName>
      <LongName>000850 - Disclosure - 12. INCOME TAXES: Schedule of Unrecognized deductible temporary differences (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure12IncomeTaxesScheduleOfUnrecognizedDeductibleTemporaryDifferencesDetails</Role>
      <ShortName>12. INCOME TAXES: Schedule of Unrecognized deductible temporary differences (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pacificbooker.com/20260131/role/idr_Disclosure12IncomeTaxesScheduleOfUnrecognizedDeductibleTemporaryDifferencesTables</ParentRole>
      <Position>84</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R85.htm</HtmlFileName>
      <LongName>000860 - Disclosure - 12. INCOME TAXES: Schedule of expiration of non-capital loss carry forwards (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure12IncomeTaxesScheduleOfExpirationOfNonCapitalLossCarryForwardsDetails</Role>
      <ShortName>12. INCOME TAXES: Schedule of expiration of non-capital loss carry forwards (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pacificbooker.com/20260131/role/idr_Disclosure12IncomeTaxesScheduleOfExpirationOfNonCapitalLossCarryForwardsTables</ParentRole>
      <Position>85</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R86.htm</HtmlFileName>
      <LongName>000870 - Disclosure - 14. SEGMENTED INFORMATION (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure14SegmentedInformationDetails</Role>
      <ShortName>14. SEGMENTED INFORMATION (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pacificbooker.com/20260131/role/idr_Disclosure14SegmentedInformation</ParentRole>
      <Position>86</Position>
    </Report>
    <Report instance="pbmlf-20260131_20f.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R87.htm</HtmlFileName>
      <LongName>000880 - Disclosure - 17. SUBSEQUENT EVENTS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pacificbooker.com/20260131/role/idr_Disclosure17SubsequentEventsDetails</Role>
      <ShortName>17. SUBSEQUENT EVENTS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pacificbooker.com/20260131/role/idr_Disclosure17SubsequentEvents</ParentRole>
      <Position>87</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File>pbmlf-20260131.xsd</File>
    <File doctype="20-F" isDefinitelyFs="true" isIfrs="true" isUsgaap="true" original="pbmlf-20260131_20f.htm">pbmlf-20260131_20f.htm</File>
    <File>pbmlf-20260131_cal.xml</File>
    <File>pbmlf-20260131_def.xml</File>
    <File>pbmlf-20260131_lab.xml</File>
    <File>pbmlf-20260131_pre.xml</File>
  </InputFiles>
  <SupplementalFiles>
    <File>pb20f_1.jpg</File>
    <File>pb20f_2.jpg</File>
    <File>pb20f_3.jpg</File>
  </SupplementalFiles>
  <BaseTaxonomies>
    <BaseTaxonomy items="85">http://fasb.org/us-gaap/2025</BaseTaxonomy>
    <BaseTaxonomy items="46">http://xbrl.sec.gov/dei/2025</BaseTaxonomy>
    <BaseTaxonomy items="312">https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
