<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.24.2</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>301</ContextCount>
  <ElementCount>331</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>95</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>10</UnitCount>
  <MyReports>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>0000001 - Document - COVER</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/COVER</Role>
      <ShortName>COVER</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>9952151 - Statement - CONSOLIDATED BALANCE SHEETS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/CONSOLIDATEDBALANCESHEETS</Role>
      <ShortName>CONSOLIDATED BALANCE SHEETS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>9952152 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/CONSOLIDATEDBALANCESHEETSParenthetical</Role>
      <ShortName>CONSOLIDATED BALANCE SHEETS (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>9952153 - Statement - CONSOLIDATED STATEMENTS OF INCOME</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/CONSOLIDATEDSTATEMENTSOFINCOME</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF INCOME</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>9952154 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>9952155 - Statement - CONSOLIDATED STATEMENTS OF EQUITY</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/CONSOLIDATEDSTATEMENTSOFEQUITY</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF EQUITY</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>9952156 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF CASH FLOWS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>9952157 - Disclosure - COMPANY OVERVIEW AND BASIS OF PRESENTATION</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/COMPANYOVERVIEWANDBASISOFPRESENTATION</Role>
      <ShortName>COMPANY OVERVIEW AND BASIS OF PRESENTATION</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>9952158 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIES</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>9952159 - Disclosure - REVENUE RECOGNITION</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/REVENUERECOGNITION</Role>
      <ShortName>REVENUE RECOGNITION</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>9952160 - Disclosure - EARNINGS PER SHARE</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/EARNINGSPERSHARE</Role>
      <ShortName>EARNINGS PER SHARE</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>9952161 - Disclosure - STOCKHOLDERS' EQUITY</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/STOCKHOLDERSEQUITY</Role>
      <ShortName>STOCKHOLDERS' EQUITY</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>9952162 - Disclosure - COMMITMENTS AND CONTINGENCIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/COMMITMENTSANDCONTINGENCIES</Role>
      <ShortName>COMMITMENTS AND CONTINGENCIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>9952163 - Disclosure - DEBT</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/DEBT</Role>
      <ShortName>DEBT</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>9952164 - Disclosure - DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/DERIVATIVEINSTRUMENTSANDHEDGINGACTIVITIES</Role>
      <ShortName>DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>9952165 - Disclosure - SEGMENTS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/SEGMENTS</Role>
      <ShortName>SEGMENTS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>9952166 - Disclosure - SUBSEQUENT EVENTS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/SUBSEQUENTEVENTS</Role>
      <ShortName>SUBSEQUENT EVENTS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.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>18</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.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>19</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>9954471 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPolicies</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>9954472 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESTables</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIES</ParentRole>
      <Position>21</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>9954473 - Disclosure - REVENUE RECOGNITION (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/REVENUERECOGNITIONTables</Role>
      <ShortName>REVENUE RECOGNITION (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/REVENUERECOGNITION</ParentRole>
      <Position>22</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>9954474 - Disclosure - EARNINGS PER SHARE (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/EARNINGSPERSHARETables</Role>
      <ShortName>EARNINGS PER SHARE (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/EARNINGSPERSHARE</ParentRole>
      <Position>23</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>9954475 - Disclosure - STOCKHOLDERS' EQUITY (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/STOCKHOLDERSEQUITYTables</Role>
      <ShortName>STOCKHOLDERS' EQUITY (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/STOCKHOLDERSEQUITY</ParentRole>
      <Position>24</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>9954476 - Disclosure - COMMITMENTS AND CONTINGENCIES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/COMMITMENTSANDCONTINGENCIESTables</Role>
      <ShortName>COMMITMENTS AND CONTINGENCIES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/COMMITMENTSANDCONTINGENCIES</ParentRole>
      <Position>25</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>9954477 - Disclosure - DEBT (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/DEBTTables</Role>
      <ShortName>DEBT (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/DEBT</ParentRole>
      <Position>26</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>9954478 - Disclosure - DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/DERIVATIVEINSTRUMENTSANDHEDGINGACTIVITIESTables</Role>
      <ShortName>DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/DERIVATIVEINSTRUMENTSANDHEDGINGACTIVITIES</ParentRole>
      <Position>27</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>9954479 - Disclosure - SEGMENTS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/SEGMENTSTables</Role>
      <ShortName>SEGMENTS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/SEGMENTS</ParentRole>
      <Position>28</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>9954480 - Disclosure - COMPANY OVERVIEW AND BASIS OF PRESENTATION (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/COMPANYOVERVIEWANDBASISOFPRESENTATIONNarrativeDetails</Role>
      <ShortName>COMPANY OVERVIEW AND BASIS OF PRESENTATION (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/COMPANYOVERVIEWANDBASISOFPRESENTATION</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>9954481 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Schedule of Joint Ventures) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESScheduleofJointVenturesDetails</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Schedule of Joint Ventures) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESTables</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>9954482 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESNarrativeDetails</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESTables</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>9954483 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Summary of Restricted Cash) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESSummaryofRestrictedCashDetails</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Summary of Restricted Cash) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESTables</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>9954484 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Summary of Value Added Tax Receivables) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESSummaryofValueAddedTaxReceivablesDetails</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Summary of Value Added Tax Receivables) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESTables</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>9954485 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Summary of Income Tax Receivables) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESSummaryofIncomeTaxReceivablesDetails</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Summary of Income Tax Receivables) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESTables</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>9954486 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Net Effect of Foreign Currency Translation) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESNetEffectofForeignCurrencyTranslationDetails</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Net Effect of Foreign Currency Translation) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESTables</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>9954487 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Summary of Foreign Currency Gains (Losses)) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESSummaryofForeignCurrencyGainsLossesDetails</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Summary of Foreign Currency Gains (Losses)) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESTables</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>9954488 - Disclosure - REVENUE RECOGNITION (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/REVENUERECOGNITIONNarrativeDetails</Role>
      <ShortName>REVENUE RECOGNITION (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/REVENUERECOGNITIONTables</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>9954489 - Disclosure - REVENUE RECOGNITION (Schedule of Contract Performance Liabilities) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/REVENUERECOGNITIONScheduleofContractPerformanceLiabilitiesDetails</Role>
      <ShortName>REVENUE RECOGNITION (Schedule of Contract Performance Liabilities) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/REVENUERECOGNITIONTables</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>9954490 - Disclosure - REVENUE RECOGNITION (Schedule of Disaggregated Revenues) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/REVENUERECOGNITIONScheduleofDisaggregatedRevenuesDetails</Role>
      <ShortName>REVENUE RECOGNITION (Schedule of Disaggregated Revenues) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/REVENUERECOGNITIONTables</ParentRole>
      <Position>39</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>9954491 - Disclosure - EARNINGS PER SHARE (Schedule of the Computation of Net Income Per Share) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/EARNINGSPERSHAREScheduleoftheComputationofNetIncomePerShareDetails</Role>
      <ShortName>EARNINGS PER SHARE (Schedule of the Computation of Net Income Per Share) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/EARNINGSPERSHARETables</ParentRole>
      <Position>40</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>9954492 - Disclosure - STOCKHOLDERS' EQUITY (Schedule of Dividends) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/STOCKHOLDERSEQUITYScheduleofDividendsDetails</Role>
      <ShortName>STOCKHOLDERS' EQUITY (Schedule of Dividends) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/STOCKHOLDERSEQUITYTables</ParentRole>
      <Position>41</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>9954493 - Disclosure - STOCKHOLDERS' EQUITY (Schedule of Components of Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Loss) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/STOCKHOLDERSEQUITYScheduleofComponentsofOtherComprehensiveIncomeLossandAccumulatedOtherComprehensiveLossDetails</Role>
      <ShortName>STOCKHOLDERS' EQUITY (Schedule of Components of Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Loss) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/STOCKHOLDERSEQUITYTables</ParentRole>
      <Position>42</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>9954494 - Disclosure - STOCKHOLDERS' EQUITY (Schedule of Retained Earnings Not Available for Distribution) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/STOCKHOLDERSEQUITYScheduleofRetainedEarningsNotAvailableforDistributionDetails</Role>
      <ShortName>STOCKHOLDERS' EQUITY (Schedule of Retained Earnings Not Available for Distribution) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/STOCKHOLDERSEQUITYTables</ParentRole>
      <Position>43</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>9954495 - Disclosure - STOCKHOLDERS' EQUITY (Share Repurchase Program) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/STOCKHOLDERSEQUITYShareRepurchaseProgramDetails</Role>
      <ShortName>STOCKHOLDERS' EQUITY (Share Repurchase Program) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/STOCKHOLDERSEQUITYTables</ParentRole>
      <Position>44</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>9954496 - Disclosure - STOCKHOLDERS' EQUITY (Schedule of Share-Based Payment Arrangement, Activity) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/STOCKHOLDERSEQUITYScheduleofShareBasedPaymentArrangementActivityDetails</Role>
      <ShortName>STOCKHOLDERS' EQUITY (Schedule of Share-Based Payment Arrangement, Activity) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/STOCKHOLDERSEQUITYTables</ParentRole>
      <Position>45</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>9954497 - Disclosure - COMMITMENTS AND CONTINGENCIES (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/COMMITMENTSANDCONTINGENCIESNarrativeDetails</Role>
      <ShortName>COMMITMENTS AND CONTINGENCIES (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/COMMITMENTSANDCONTINGENCIESTables</ParentRole>
      <Position>46</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>9954498 - Disclosure - COMMITMENTS AND CONTINGENCIES (Estimated Future Minimum Lease) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/COMMITMENTSANDCONTINGENCIESEstimatedFutureMinimumLeaseDetails</Role>
      <ShortName>COMMITMENTS AND CONTINGENCIES (Estimated Future Minimum Lease) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/COMMITMENTSANDCONTINGENCIESTables</ParentRole>
      <Position>47</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>9954499 - Disclosure - COMMITMENTS AND CONTINGENCIES (Schedule of Variable Interest Entities Maximum Loss Exposure) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/COMMITMENTSANDCONTINGENCIESScheduleofVariableInterestEntitiesMaximumLossExposureDetails</Role>
      <ShortName>COMMITMENTS AND CONTINGENCIES (Schedule of Variable Interest Entities Maximum Loss Exposure) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/COMMITMENTSANDCONTINGENCIESTables</ParentRole>
      <Position>48</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>9954500 - Disclosure - DEBT (Schedule of Short-Term Borrowings) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/DEBTScheduleofShortTermBorrowingsDetails</Role>
      <ShortName>DEBT (Schedule of Short-Term Borrowings) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/DEBTTables</ParentRole>
      <Position>49</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>9954501 - Disclosure - DEBT (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/DEBTNarrativeDetails</Role>
      <ShortName>DEBT (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/DEBTTables</ParentRole>
      <Position>50</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>9954502 - Disclosure - DEBT (Schedule of Changes in Long-Term Debt) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/DEBTScheduleofChangesinLongTermDebtDetails</Role>
      <ShortName>DEBT (Schedule of Changes in Long-Term Debt) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/DEBTTables</ParentRole>
      <Position>51</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>9954503 - Disclosure - DEBT (Schedule of Annual Maturities of Long-Term Debt) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/DEBTScheduleofAnnualMaturitiesofLongTermDebtDetails</Role>
      <ShortName>DEBT (Schedule of Annual Maturities of Long-Term Debt) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/DEBTTables</ParentRole>
      <Position>52</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>9954504 - Disclosure - DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Schedule of Interest Rate Derivatives) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/DERIVATIVEINSTRUMENTSANDHEDGINGACTIVITIESScheduleofInterestRateDerivativesDetails</Role>
      <ShortName>DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Schedule of Interest Rate Derivatives) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/DERIVATIVEINSTRUMENTSANDHEDGINGACTIVITIESTables</ParentRole>
      <Position>53</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>9954505 - Disclosure - DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Schedule of Cash Flow Hedging Instruments) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/DERIVATIVEINSTRUMENTSANDHEDGINGACTIVITIESScheduleofCashFlowHedgingInstrumentsDetails</Role>
      <ShortName>DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Schedule of Cash Flow Hedging Instruments) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/DERIVATIVEINSTRUMENTSANDHEDGINGACTIVITIESTables</ParentRole>
      <Position>54</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>9954506 - Disclosure - DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Schedule of Notional Amounts of Outstanding Derivative Positions) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/DERIVATIVEINSTRUMENTSANDHEDGINGACTIVITIESScheduleofNotionalAmountsofOutstandingDerivativePositionsDetails</Role>
      <ShortName>DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Schedule of Notional Amounts of Outstanding Derivative Positions) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/DERIVATIVEINSTRUMENTSANDHEDGINGACTIVITIESTables</ParentRole>
      <Position>55</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>9954507 - Disclosure - DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Schedule of Derivative Instruments in Statement of Financial Position, Fair Value) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/DERIVATIVEINSTRUMENTSANDHEDGINGACTIVITIESScheduleofDerivativeInstrumentsinStatementofFinancialPositionFairValueDetails</Role>
      <ShortName>DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Schedule of Derivative Instruments in Statement of Financial Position, Fair Value) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/DERIVATIVEINSTRUMENTSANDHEDGINGACTIVITIESTables</ParentRole>
      <Position>56</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>9954508 - Disclosure - DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Schedule Of Open Non-Deliverable Forward Foreign Exchange Contract) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/DERIVATIVEINSTRUMENTSANDHEDGINGACTIVITIESScheduleOfOpenNonDeliverableForwardForeignExchangeContractDetails</Role>
      <ShortName>DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Schedule Of Open Non-Deliverable Forward Foreign Exchange Contract) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/DERIVATIVEINSTRUMENTSANDHEDGINGACTIVITIESTables</ParentRole>
      <Position>57</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>9954509 - Disclosure - SEGMENTS (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/SEGMENTSNarrativeDetails</Role>
      <ShortName>SEGMENTS (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/SEGMENTSTables</ParentRole>
      <Position>58</Position>
    </Report>
    <Report instance="psmt-20240531.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>9954510 - Disclosure - SEGMENTS (Schedule of Segment Revenues, Operating Costs and Balance Sheet Items) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.pricesmart.com/role/SEGMENTSScheduleofSegmentRevenuesOperatingCostsandBalanceSheetItemsDetails</Role>
      <ShortName>SEGMENTS (Schedule of Segment Revenues, Operating Costs and Balance Sheet Items) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.pricesmart.com/role/SEGMENTSTables</ParentRole>
      <Position>59</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="psmt-20240531.htm">psmt-20240531.htm</File>
    <File>psmt-20240531.xsd</File>
    <File>psmt-20240531_cal.xml</File>
    <File>psmt-20240531_def.xml</File>
    <File>psmt-20240531_lab.xml</File>
    <File>psmt-20240531_pre.xml</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy items="1">http://fasb.org/srt/2024</BaseTaxonomy>
    <BaseTaxonomy items="1026">http://fasb.org/us-gaap/2024</BaseTaxonomy>
    <BaseTaxonomy items="29">http://xbrl.sec.gov/dei/2024</BaseTaxonomy>
    <BaseTaxonomy items="17">http://xbrl.sec.gov/ecd/2024</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
