<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.26.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>631</ContextCount>
  <ElementCount>795</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>154</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>15</UnitCount>
  <MyReports>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>0000001 - Document - Cover Page</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/CoverPage</Role>
      <ShortName>Cover Page</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>0000002 - Document - Audit Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/AuditInformation</Role>
      <ShortName>Audit Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>9952151 - Statement - CONSOLIDATED BALANCE SHEETS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/CONSOLIDATEDBALANCESHEETS</Role>
      <ShortName>CONSOLIDATED BALANCE SHEETS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>9952152 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/CONSOLIDATEDBALANCESHEETSParenthetical</Role>
      <ShortName>CONSOLIDATED BALANCE SHEETS (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>9952153 - Statement - CONSOLIDATED STATEMENTS OF INCOME</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/CONSOLIDATEDSTATEMENTSOFINCOME</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF INCOME</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>9952154 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>9952155 - Statement - CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/CONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITY</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>9952156 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF CASH FLOWS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>9952157 - Disclosure - ORGANIZATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/ORGANIZATIONSANDSUMMARYOFSIGNIFICANTACCOUNTINGPOLICIES</Role>
      <ShortName>ORGANIZATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>9952158 - Disclosure - ACQUISITIONS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/ACQUISITIONS</Role>
      <ShortName>ACQUISITIONS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>9952159 - Disclosure - FAIR VALUE</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/FAIRVALUE</Role>
      <ShortName>FAIR VALUE</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>9952160 - Disclosure - AVAILABLE-FOR-SALE SECURITIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/AVAILABLEFORSALESECURITIES</Role>
      <ShortName>AVAILABLE-FOR-SALE SECURITIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>9952161 - Disclosure - LOANS &amp; ALLOWANCE FOR CREDIT LOSSES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/LOANSALLOWANCEFORCREDITLOSSES</Role>
      <ShortName>LOANS &amp; ALLOWANCE FOR CREDIT LOSSES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>9952162 - Disclosure - DERIVATIVES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/DERIVATIVES</Role>
      <ShortName>DERIVATIVES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>9952163 - Disclosure - OFFSETTING OF DERIVATIVES AND SECURITIES FINANCING AGREEMENTS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/OFFSETTINGOFDERIVATIVESANDSECURITIESFINANCINGAGREEMENTS</Role>
      <ShortName>OFFSETTING OF DERIVATIVES AND SECURITIES FINANCING AGREEMENTS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>9952164 - Disclosure - CUSTOMER, BROKER-DEALER AND CLEARING RECEIVABLES AND PAYABLES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/CUSTOMERBROKERDEALERANDCLEARINGRECEIVABLESANDPAYABLES</Role>
      <ShortName>CUSTOMER, BROKER-DEALER AND CLEARING RECEIVABLES AND PAYABLES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>9952165 - Disclosure - OTHER ASSETS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/OTHERASSETS</Role>
      <ShortName>OTHER ASSETS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>9952166 - Disclosure - GOODWILL AND INTANGIBLE ASSETS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/GOODWILLANDINTANGIBLEASSETS</Role>
      <ShortName>GOODWILL AND INTANGIBLE ASSETS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>9952167 - Disclosure - DEPOSITS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/DEPOSITS</Role>
      <ShortName>DEPOSITS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>9952168 - Disclosure - ADVANCES FROM THE FEDERAL HOME LOAN BANK</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/ADVANCESFROMTHEFEDERALHOMELOANBANK</Role>
      <ShortName>ADVANCES FROM THE FEDERAL HOME LOAN BANK</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>9952169 - Disclosure - VARIABLE INTEREST ENTITIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/VARIABLEINTERESTENTITIES</Role>
      <ShortName>VARIABLE INTEREST ENTITIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>9952170 - Disclosure - BORROWINGS, SUBORDINATED NOTES AND DEBENTURES</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://axosfinancial.com/role/BORROWINGSSUBORDINATEDNOTESANDDEBENTURES</Role>
      <ShortName>BORROWINGS, SUBORDINATED NOTES AND DEBENTURES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>9952171 - Disclosure - INCOME TAXES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/INCOMETAXES</Role>
      <ShortName>INCOME TAXES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>9952172 - Disclosure - STOCKHOLDERS' EQUITY</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/STOCKHOLDERSEQUITY</Role>
      <ShortName>STOCKHOLDERS' EQUITY</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>9952173 - Disclosure - STOCK-BASED COMPENSATION</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/STOCKBASEDCOMPENSATION</Role>
      <ShortName>STOCK-BASED COMPENSATION</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>9952174 - Disclosure - EARNINGS PER COMMON SHARE</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/EARNINGSPERCOMMONSHARE</Role>
      <ShortName>EARNINGS PER COMMON SHARE</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>9952175 - Disclosure - COMMITMENTS, CONTINGENCIES AND OFF-BALANCE-SHEET ACTIVITIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/COMMITMENTSCONTINGENCIESANDOFFBALANCESHEETACTIVITIES</Role>
      <ShortName>COMMITMENTS, CONTINGENCIES AND OFF-BALANCE-SHEET ACTIVITIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>27</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>9952176 - Disclosure - REGULATORY CAPITAL REQUIREMENTS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/REGULATORYCAPITALREQUIREMENTS</Role>
      <ShortName>REGULATORY CAPITAL REQUIREMENTS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>28</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>9952177 - Disclosure - EMPLOYEE BENEFIT PLAN</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/EMPLOYEEBENEFITPLAN</Role>
      <ShortName>EMPLOYEE BENEFIT PLAN</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>29</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>9952178 - Disclosure - PARENT-ONLY CONDENSED FINANCIAL INFORMATION</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/PARENTONLYCONDENSEDFINANCIALINFORMATION</Role>
      <ShortName>PARENT-ONLY CONDENSED FINANCIAL INFORMATION</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>30</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>9952179 - Disclosure - SEGMENT REPORTING</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/SEGMENTREPORTING</Role>
      <ShortName>SEGMENT REPORTING</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>31</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.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>32</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>995447 - Disclosure - Insider Trading Policies and Procedures</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/ecd/role/InsiderTradingPoliciesProc</Role>
      <ShortName>Insider Trading Policies and Procedures</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>33</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>995550 - Disclosure - Cybersecurity Risk Management and Strategy Disclosure</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure</Role>
      <ShortName>Cybersecurity Risk Management and Strategy Disclosure</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>34</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>9955511 - Disclosure - ORGANIZATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/ORGANIZATIONSANDSUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPolicies</Role>
      <ShortName>ORGANIZATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>35</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>9955512 - Disclosure - ORGANIZATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/ORGANIZATIONSANDSUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESTables</Role>
      <ShortName>ORGANIZATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://axosfinancial.com/role/ORGANIZATIONSANDSUMMARYOFSIGNIFICANTACCOUNTINGPOLICIES</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>9955513 - Disclosure - ACQUISITIONS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/ACQUISITIONSTables</Role>
      <ShortName>ACQUISITIONS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://axosfinancial.com/role/ACQUISITIONS</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>9955514 - Disclosure - FAIR VALUE (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/FAIRVALUETables</Role>
      <ShortName>FAIR VALUE (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://axosfinancial.com/role/FAIRVALUE</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>9955515 - Disclosure - AVAILABLE-FOR-SALE SECURITIES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/AVAILABLEFORSALESECURITIESTables</Role>
      <ShortName>AVAILABLE-FOR-SALE SECURITIES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://axosfinancial.com/role/AVAILABLEFORSALESECURITIES</ParentRole>
      <Position>39</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>9955516 - Disclosure - LOANS &amp; ALLOWANCE FOR CREDIT LOSSES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/LOANSALLOWANCEFORCREDITLOSSESTables</Role>
      <ShortName>LOANS &amp; ALLOWANCE FOR CREDIT LOSSES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://axosfinancial.com/role/LOANSALLOWANCEFORCREDITLOSSES</ParentRole>
      <Position>40</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>9955517 - Disclosure - DERIVATIVES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/DERIVATIVESTables</Role>
      <ShortName>DERIVATIVES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://axosfinancial.com/role/DERIVATIVES</ParentRole>
      <Position>41</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>9955518 - Disclosure - OFFSETTING OF DERIVATIVES AND SECURITIES FINANCING AGREEMENTS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/OFFSETTINGOFDERIVATIVESANDSECURITIESFINANCINGAGREEMENTSTables</Role>
      <ShortName>OFFSETTING OF DERIVATIVES AND SECURITIES FINANCING AGREEMENTS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://axosfinancial.com/role/OFFSETTINGOFDERIVATIVESANDSECURITIESFINANCINGAGREEMENTS</ParentRole>
      <Position>42</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>9955519 - Disclosure - CUSTOMER, BROKER-DEALER AND CLEARING RECEIVABLES AND PAYABLES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/CUSTOMERBROKERDEALERANDCLEARINGRECEIVABLESANDPAYABLESTables</Role>
      <ShortName>CUSTOMER, BROKER-DEALER AND CLEARING RECEIVABLES AND PAYABLES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://axosfinancial.com/role/CUSTOMERBROKERDEALERANDCLEARINGRECEIVABLESANDPAYABLES</ParentRole>
      <Position>43</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>9955520 - Disclosure - OTHER ASSETS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/OTHERASSETSTables</Role>
      <ShortName>OTHER ASSETS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://axosfinancial.com/role/OTHERASSETS</ParentRole>
      <Position>44</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>9955521 - Disclosure - GOODWILL AND INTANGIBLE ASSETS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/GOODWILLANDINTANGIBLEASSETSTables</Role>
      <ShortName>GOODWILL AND INTANGIBLE ASSETS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://axosfinancial.com/role/GOODWILLANDINTANGIBLEASSETS</ParentRole>
      <Position>45</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>9955522 - Disclosure - DEPOSITS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/DEPOSITSTables</Role>
      <ShortName>DEPOSITS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://axosfinancial.com/role/DEPOSITS</ParentRole>
      <Position>46</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>9955523 - Disclosure - ADVANCES FROM THE FEDERAL HOME LOAN BANK (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/ADVANCESFROMTHEFEDERALHOMELOANBANKTables</Role>
      <ShortName>ADVANCES FROM THE FEDERAL HOME LOAN BANK (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://axosfinancial.com/role/ADVANCESFROMTHEFEDERALHOMELOANBANK</ParentRole>
      <Position>47</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>9955524 - Disclosure - VARIABLE INTEREST ENTITIES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/VARIABLEINTERESTENTITIESTables</Role>
      <ShortName>VARIABLE INTEREST ENTITIES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://axosfinancial.com/role/VARIABLEINTERESTENTITIES</ParentRole>
      <Position>48</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>9955525 - Disclosure - BORROWINGS, SUBORDINATED NOTES AND DEBENTURES (Tables)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://axosfinancial.com/role/BORROWINGSSUBORDINATEDNOTESANDDEBENTURESTables</Role>
      <ShortName>BORROWINGS, SUBORDINATED NOTES AND DEBENTURES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://axosfinancial.com/role/BORROWINGSSUBORDINATEDNOTESANDDEBENTURES</ParentRole>
      <Position>49</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>9955526 - Disclosure - INCOME TAXES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/INCOMETAXESTables</Role>
      <ShortName>INCOME TAXES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://axosfinancial.com/role/INCOMETAXES</ParentRole>
      <Position>50</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>9955527 - Disclosure - STOCKHOLDERS' EQUITY (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/STOCKHOLDERSEQUITYTables</Role>
      <ShortName>STOCKHOLDERS' EQUITY (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://axosfinancial.com/role/STOCKHOLDERSEQUITY</ParentRole>
      <Position>51</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>9955528 - Disclosure - STOCK-BASED COMPENSATION (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/STOCKBASEDCOMPENSATIONTables</Role>
      <ShortName>STOCK-BASED COMPENSATION (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://axosfinancial.com/role/STOCKBASEDCOMPENSATION</ParentRole>
      <Position>52</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>9955529 - Disclosure - EARNINGS PER COMMON SHARE (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/EARNINGSPERCOMMONSHARETables</Role>
      <ShortName>EARNINGS PER COMMON SHARE (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://axosfinancial.com/role/EARNINGSPERCOMMONSHARE</ParentRole>
      <Position>53</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>9955530 - Disclosure - COMMITMENTS, CONTINGENCIES AND OFF-BALANCE-SHEET ACTIVITIES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/COMMITMENTSCONTINGENCIESANDOFFBALANCESHEETACTIVITIESTables</Role>
      <ShortName>COMMITMENTS, CONTINGENCIES AND OFF-BALANCE-SHEET ACTIVITIES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://axosfinancial.com/role/COMMITMENTSCONTINGENCIESANDOFFBALANCESHEETACTIVITIES</ParentRole>
      <Position>54</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>9955531 - Disclosure - REGULATORY CAPITAL REQUIREMENTS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/REGULATORYCAPITALREQUIREMENTSTables</Role>
      <ShortName>REGULATORY CAPITAL REQUIREMENTS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://axosfinancial.com/role/REGULATORYCAPITALREQUIREMENTS</ParentRole>
      <Position>55</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>9955532 - Disclosure - PARENT-ONLY CONDENSED FINANCIAL INFORMATION (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/PARENTONLYCONDENSEDFINANCIALINFORMATIONTables</Role>
      <ShortName>PARENT-ONLY CONDENSED FINANCIAL INFORMATION (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://axosfinancial.com/role/PARENTONLYCONDENSEDFINANCIALINFORMATION</ParentRole>
      <Position>56</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>9955533 - Disclosure - SEGMENT REPORTING (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/SEGMENTREPORTINGTables</Role>
      <ShortName>SEGMENT REPORTING (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://axosfinancial.com/role/SEGMENTREPORTING</ParentRole>
      <Position>57</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>9955534 - Disclosure - ORGANIZATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - NARRATIVE (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/ORGANIZATIONSANDSUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESNARRATIVEDetails</Role>
      <ShortName>ORGANIZATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - NARRATIVE (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://axosfinancial.com/role/ORGANIZATIONSANDSUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESTables</ParentRole>
      <Position>58</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>9955535 - Disclosure - ORGANIZATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - SCHEDULE OF NON-INTEREST INCOME, SEGREGATED BY REVENUE STREAMS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/ORGANIZATIONSANDSUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESSCHEDULEOFNONINTERESTINCOMESEGREGATEDBYREVENUESTREAMSDetails</Role>
      <ShortName>ORGANIZATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - SCHEDULE OF NON-INTEREST INCOME, SEGREGATED BY REVENUE STREAMS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>59</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>9955536 - Disclosure - ORGANIZATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - SCHEDULE OF CASH AND CASH EQUIVALENTS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/ORGANIZATIONSANDSUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESSCHEDULEOFCASHANDCASHEQUIVALENTSDetails</Role>
      <ShortName>ORGANIZATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - SCHEDULE OF CASH AND CASH EQUIVALENTS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>60</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>9955537 - Disclosure - ACQUISITIONS - NARRATIVE (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/ACQUISITIONSNARRATIVEDetails</Role>
      <ShortName>ACQUISITIONS - NARRATIVE (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>61</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>9955538 - Disclosure - ACQUISITIONS - SCHEDULE OF ASSET ACQUISITION (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/ACQUISITIONSSCHEDULEOFASSETACQUISITIONDetails</Role>
      <ShortName>ACQUISITIONS - SCHEDULE OF ASSET ACQUISITION (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>62</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>9955539 - Disclosure - ACQUISITIONS - SCHEDULE OF PURCHASE PRICE FOR THE ACQUISITION (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/ACQUISITIONSSCHEDULEOFPURCHASEPRICEFORTHEACQUISITIONDetails</Role>
      <ShortName>ACQUISITIONS - SCHEDULE OF PURCHASE PRICE FOR THE ACQUISITION (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>63</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>9955540 - Disclosure - ACQUISITIONS - SCHEDULE OF PURCHASE PRICE ALLOCATION (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/ACQUISITIONSSCHEDULEOFPURCHASEPRICEALLOCATIONDetails</Role>
      <ShortName>ACQUISITIONS - SCHEDULE OF PURCHASE PRICE ALLOCATION (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>64</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>9955541 - Disclosure - ACQUISITIONS -SCHEDULE OF INTANGIBLE ASSETS ACQUIRED (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/ACQUISITIONSSCHEDULEOFINTANGIBLEASSETSACQUIREDDetails</Role>
      <ShortName>ACQUISITIONS -SCHEDULE OF INTANGIBLE ASSETS ACQUIRED (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>65</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>9955542 - Disclosure - ACQUISITIONS - SCHEDULE OF PCD LOANS ACQUIRED (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/ACQUISITIONSSCHEDULEOFPCDLOANSACQUIREDDetails</Role>
      <ShortName>ACQUISITIONS - SCHEDULE OF PCD LOANS ACQUIRED (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>66</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>9955543 - Disclosure - ACQUISITIONS - SCHEDULE OF PRO FORMA INFORMATION (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/ACQUISITIONSSCHEDULEOFPROFORMAINFORMATIONDetails</Role>
      <ShortName>ACQUISITIONS - SCHEDULE OF PRO FORMA INFORMATION (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>67</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>9955544 - Disclosure - ACQUISITIONS - SCHEDULE OF ACQUIRED INDEFINITE-LIVED INTANGIBLE ASSETS BY MAJOR CLASS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/ACQUISITIONSSCHEDULEOFACQUIREDINDEFINITELIVEDINTANGIBLEASSETSBYMAJORCLASSDetails</Role>
      <ShortName>ACQUISITIONS - SCHEDULE OF ACQUIRED INDEFINITE-LIVED INTANGIBLE ASSETS BY MAJOR CLASS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>68</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>9955545 - Disclosure - ACQUISITIONS - SCHEDULE OF INTANGIBLE ASSET AND LIABILITY (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/ACQUISITIONSSCHEDULEOFINTANGIBLEASSETANDLIABILITYDetails</Role>
      <ShortName>ACQUISITIONS - SCHEDULE OF INTANGIBLE ASSET AND LIABILITY (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>69</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R70.htm</HtmlFileName>
      <LongName>9955546 - Disclosure - FAIR VALUE - SCHEDULE OF ASSETS AND LIABILITIES MEASURED ON RECURRING BASIS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/FAIRVALUESCHEDULEOFASSETSANDLIABILITIESMEASUREDONRECURRINGBASISDetails</Role>
      <ShortName>FAIR VALUE - SCHEDULE OF ASSETS AND LIABILITIES MEASURED ON RECURRING BASIS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>70</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R71.htm</HtmlFileName>
      <LongName>9955547 - Disclosure - FAIR VALUE - SCHEDULE OF LEVEL 3 ASSETS MEASURED ON RECURRING BASIS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/FAIRVALUESCHEDULEOFLEVEL3ASSETSMEASUREDONRECURRINGBASISDetails</Role>
      <ShortName>FAIR VALUE - SCHEDULE OF LEVEL 3 ASSETS MEASURED ON RECURRING BASIS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>71</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R72.htm</HtmlFileName>
      <LongName>9955548 - Disclosure - FAIR VALUE - SCHEDULE OF QUANTITATIVE INFORMATION FOR LEVEL 3 FAIR VALUE MEASURMENTS (RECURRING) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/FAIRVALUESCHEDULEOFQUANTITATIVEINFORMATIONFORLEVEL3FAIRVALUEMEASURMENTSRECURRINGDetails</Role>
      <ShortName>FAIR VALUE - SCHEDULE OF QUANTITATIVE INFORMATION FOR LEVEL 3 FAIR VALUE MEASURMENTS (RECURRING) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>72</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R73.htm</HtmlFileName>
      <LongName>9955549 - Disclosure - FAIR VALUE - SCHEDULE OF LOANS HELD-FOR-SALE (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/FAIRVALUESCHEDULEOFLOANSHELDFORSALEDetails</Role>
      <ShortName>FAIR VALUE - SCHEDULE OF LOANS HELD-FOR-SALE (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>73</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R74.htm</HtmlFileName>
      <LongName>9955550 - Disclosure - FAIR VALUE - NARRATIVE (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/FAIRVALUENARRATIVEDetails</Role>
      <ShortName>FAIR VALUE - NARRATIVE (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>74</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R75.htm</HtmlFileName>
      <LongName>9955551 - Disclosure - FAIR VALUE - SCHEDULE OF ESTIMATED FAIR VALUES OF FINANCIAL INSTRUMENTS AT PERIOD-END (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/FAIRVALUESCHEDULEOFESTIMATEDFAIRVALUESOFFINANCIALINSTRUMENTSATPERIODENDDetails</Role>
      <ShortName>FAIR VALUE - SCHEDULE OF ESTIMATED FAIR VALUES OF FINANCIAL INSTRUMENTS AT PERIOD-END (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>75</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R76.htm</HtmlFileName>
      <LongName>9955552 - Disclosure - AVAILABLE-FOR-SALE SECURITIES - SCHEDULE OF AMORTIZED COST, CARRYING AMOUNT AND FAIR VALUE DISCLOSURES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/AVAILABLEFORSALESECURITIESSCHEDULEOFAMORTIZEDCOSTCARRYINGAMOUNTANDFAIRVALUEDISCLOSURESDetails</Role>
      <ShortName>AVAILABLE-FOR-SALE SECURITIES - SCHEDULE OF AMORTIZED COST, CARRYING AMOUNT AND FAIR VALUE DISCLOSURES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>76</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R77.htm</HtmlFileName>
      <LongName>9955553 - Disclosure - AVAILABLE-FOR-SALE SECURITIES - NARRATIVE (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/AVAILABLEFORSALESECURITIESNARRATIVEDetails</Role>
      <ShortName>AVAILABLE-FOR-SALE SECURITIES - NARRATIVE (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>77</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R78.htm</HtmlFileName>
      <LongName>9955554 - Disclosure - AVAILABLE-FOR-SALE SECURITIES - SCHEDULE OF UNREALIZED LOSS ON INVESTMENTS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/AVAILABLEFORSALESECURITIESSCHEDULEOFUNREALIZEDLOSSONINVESTMENTSDetails</Role>
      <ShortName>AVAILABLE-FOR-SALE SECURITIES - SCHEDULE OF UNREALIZED LOSS ON INVESTMENTS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>78</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R79.htm</HtmlFileName>
      <LongName>9955555 - Disclosure - AVAILABLE-FOR-SALE SECURITIES- SCHEDULE OF INVESTMENTS CLASSIFIED BY CONTRACTUAL MATURITY DATE (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/AVAILABLEFORSALESECURITIESSCHEDULEOFINVESTMENTSCLASSIFIEDBYCONTRACTUALMATURITYDATEDetails</Role>
      <ShortName>AVAILABLE-FOR-SALE SECURITIES- SCHEDULE OF INVESTMENTS CLASSIFIED BY CONTRACTUAL MATURITY DATE (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>79</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R80.htm</HtmlFileName>
      <LongName>9955556 - Disclosure - LOANS &amp; ALLOWANCE FOR CREDIT LOSSES - NARRATIVE (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/LOANSALLOWANCEFORCREDITLOSSESNARRATIVEDetails</Role>
      <ShortName>LOANS &amp; ALLOWANCE FOR CREDIT LOSSES - NARRATIVE (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>80</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R81.htm</HtmlFileName>
      <LongName>9955557 - Disclosure - LOANS &amp; ALLOWANCE FOR CREDIT LOSSES - SCHEDULE OF COMPOSITION OF LOAN PORTFOLIO (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/LOANSALLOWANCEFORCREDITLOSSESSCHEDULEOFCOMPOSITIONOFLOANPORTFOLIODetails</Role>
      <ShortName>LOANS &amp; ALLOWANCE FOR CREDIT LOSSES - SCHEDULE OF COMPOSITION OF LOAN PORTFOLIO (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>81</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R82.htm</HtmlFileName>
      <LongName>9955558 - Disclosure - LOANS &amp; ALLOWANCE FOR CREDIT LOSSES - SCHEDULE OF COMPONENTS OF THE PROVISION FOR CREDIT LOSSES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/LOANSALLOWANCEFORCREDITLOSSESSCHEDULEOFCOMPONENTSOFTHEPROVISIONFORCREDITLOSSESDetails</Role>
      <ShortName>LOANS &amp; ALLOWANCE FOR CREDIT LOSSES - SCHEDULE OF COMPONENTS OF THE PROVISION FOR CREDIT LOSSES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>82</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R83.htm</HtmlFileName>
      <LongName>9955559 - Disclosure - LOANS &amp; ALLOWANCE FOR CREDIT LOSSES - SCHEDULE OF ACTIVITY FOR ALLOWANCE FOR CREDIT LOSSES-LOANS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/LOANSALLOWANCEFORCREDITLOSSESSCHEDULEOFACTIVITYFORALLOWANCEFORCREDITLOSSESLOANSDetails</Role>
      <ShortName>LOANS &amp; ALLOWANCE FOR CREDIT LOSSES - SCHEDULE OF ACTIVITY FOR ALLOWANCE FOR CREDIT LOSSES-LOANS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>83</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R84.htm</HtmlFileName>
      <LongName>9955560 - Disclosure - LOANS &amp; ALLOWANCE FOR CREDIT LOSSES - SCHEDULE OF ALLOWANCE FOR LOAN LOSS AND RESERVE FOR UNFUNDED LOAN COMMITMENTS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/LOANSALLOWANCEFORCREDITLOSSESSCHEDULEOFALLOWANCEFORLOANLOSSANDRESERVEFORUNFUNDEDLOANCOMMITMENTSDetails</Role>
      <ShortName>LOANS &amp; ALLOWANCE FOR CREDIT LOSSES - SCHEDULE OF ALLOWANCE FOR LOAN LOSS AND RESERVE FOR UNFUNDED LOAN COMMITMENTS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>84</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R85.htm</HtmlFileName>
      <LongName>9955561 - Disclosure - LOANS &amp; ALLOWANCE FOR CREDIT LOSSES - SCHEDULE OF REAL ESTATE LOANS, LTV RATIO (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/LOANSALLOWANCEFORCREDITLOSSESSCHEDULEOFREALESTATELOANSLTVRATIODetails</Role>
      <ShortName>LOANS &amp; ALLOWANCE FOR CREDIT LOSSES - SCHEDULE OF REAL ESTATE LOANS, LTV RATIO (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>85</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R86.htm</HtmlFileName>
      <LongName>9955562 - Disclosure - LOANS &amp; ALLOWANCE FOR CREDIT LOSSES - SCHEDULE OF UNPAID PRINCIPAL BALANCE FOR PERFORMING AND NONACCRUAL (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/LOANSALLOWANCEFORCREDITLOSSESSCHEDULEOFUNPAIDPRINCIPALBALANCEFORPERFORMINGANDNONACCRUALDetails</Role>
      <ShortName>LOANS &amp; ALLOWANCE FOR CREDIT LOSSES - SCHEDULE OF UNPAID PRINCIPAL BALANCE FOR PERFORMING AND NONACCRUAL (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>86</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R87.htm</HtmlFileName>
      <LongName>9955563 - Disclosure - LOANS &amp; ALLOWANCE FOR CREDIT LOSSES - SCHEDULE OF LOANS BY AMORTIZED COST BASIS BY YEAR OF ORIGINATION AND CREDIT QUALITY INDICATOR (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/LOANSALLOWANCEFORCREDITLOSSESSCHEDULEOFLOANSBYAMORTIZEDCOSTBASISBYYEAROFORIGINATIONANDCREDITQUALITYINDICATORDetails</Role>
      <ShortName>LOANS &amp; ALLOWANCE FOR CREDIT LOSSES - SCHEDULE OF LOANS BY AMORTIZED COST BASIS BY YEAR OF ORIGINATION AND CREDIT QUALITY INDICATOR (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>87</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R88.htm</HtmlFileName>
      <LongName>9955564 - Disclosure - LOANS &amp; ALLOWANCE FOR CREDIT LOSSES -SCHEDULE OF PAST DUE LOANS AND LEASES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/LOANSALLOWANCEFORCREDITLOSSESSCHEDULEOFPASTDUELOANSANDLEASESDetails</Role>
      <ShortName>LOANS &amp; ALLOWANCE FOR CREDIT LOSSES -SCHEDULE OF PAST DUE LOANS AND LEASES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>88</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R89.htm</HtmlFileName>
      <LongName>9955565 - Disclosure - LOANS &amp; ALLOWANCE FOR CREDIT LOSSES - SCHEDULE OF RELATED PARTY LOANS COLLATERALIZED BY REAL PROPERTY (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/LOANSALLOWANCEFORCREDITLOSSESSCHEDULEOFRELATEDPARTYLOANSCOLLATERALIZEDBYREALPROPERTYDetails</Role>
      <ShortName>LOANS &amp; ALLOWANCE FOR CREDIT LOSSES - SCHEDULE OF RELATED PARTY LOANS COLLATERALIZED BY REAL PROPERTY (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>89</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R90.htm</HtmlFileName>
      <LongName>9955566 - Disclosure - LOANS &amp; ALLOWANCE FOR CREDIT LOSSES - DIRECT FINANCING LEASES AND SALES TYPE LEASES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/LOANSALLOWANCEFORCREDITLOSSESDIRECTFINANCINGLEASESANDSALESTYPELEASESDetails</Role>
      <ShortName>LOANS &amp; ALLOWANCE FOR CREDIT LOSSES - DIRECT FINANCING LEASES AND SALES TYPE LEASES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>90</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R91.htm</HtmlFileName>
      <LongName>9955567 - Disclosure - LOANS &amp; ALLOWANCE FOR CREDIT LOSSES - SCHEDULE OF FUTURE UNDISCOUNTED CASH FLOWS TO BE RECEIVED (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/LOANSALLOWANCEFORCREDITLOSSESSCHEDULEOFFUTUREUNDISCOUNTEDCASHFLOWSTOBERECEIVEDDetails</Role>
      <ShortName>LOANS &amp; ALLOWANCE FOR CREDIT LOSSES - SCHEDULE OF FUTURE UNDISCOUNTED CASH FLOWS TO BE RECEIVED (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>91</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R92.htm</HtmlFileName>
      <LongName>9955568 - Disclosure - DERIVATIVES - SCHEDULE OF DERIVATIVE INSTRUMENTS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/DERIVATIVESSCHEDULEOFDERIVATIVEINSTRUMENTSDetails</Role>
      <ShortName>DERIVATIVES - SCHEDULE OF DERIVATIVE INSTRUMENTS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>92</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R93.htm</HtmlFileName>
      <LongName>9955569 - Disclosure - DERIVATIVES - SCHEDULE OF DERIVATIVE INSTRUMENTS IN FAIR VALUE HEDGE (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/DERIVATIVESSCHEDULEOFDERIVATIVEINSTRUMENTSINFAIRVALUEHEDGEDetails</Role>
      <ShortName>DERIVATIVES - SCHEDULE OF DERIVATIVE INSTRUMENTS IN FAIR VALUE HEDGE (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>93</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R94.htm</HtmlFileName>
      <LongName>9955570 - Disclosure - DERIVATIVES - SCHEDULE OF AVAILABLE FOR SALE SECURITIES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/DERIVATIVESSCHEDULEOFAVAILABLEFORSALESECURITIESDetails</Role>
      <ShortName>DERIVATIVES - SCHEDULE OF AVAILABLE FOR SALE SECURITIES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>94</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R95.htm</HtmlFileName>
      <LongName>9955571 - Disclosure - DERIVATIVES - SCHEDULE OF CASH FLOW HEDGE (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/DERIVATIVESSCHEDULEOFCASHFLOWHEDGEDetails</Role>
      <ShortName>DERIVATIVES - SCHEDULE OF CASH FLOW HEDGE (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>95</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R96.htm</HtmlFileName>
      <LongName>9955572 - Disclosure - DERIVATIVES - NARRATIVE (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/DERIVATIVESNARRATIVEDetails</Role>
      <ShortName>DERIVATIVES - NARRATIVE (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>96</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R97.htm</HtmlFileName>
      <LongName>9955573 - Disclosure - DERIVATIVES - SCHEDULE OF GAINS (LOSSES) OF DERIVATIVES INSTRUMENTS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/DERIVATIVESSCHEDULEOFGAINSLOSSESOFDERIVATIVESINSTRUMENTSDetails</Role>
      <ShortName>DERIVATIVES - SCHEDULE OF GAINS (LOSSES) OF DERIVATIVES INSTRUMENTS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>97</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R98.htm</HtmlFileName>
      <LongName>9955574 - Disclosure - OFFSETTING OF DERIVATIVES AND SECURITIES FINANCING AGREEMENTS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/OFFSETTINGOFDERIVATIVESANDSECURITIESFINANCINGAGREEMENTSDetails</Role>
      <ShortName>OFFSETTING OF DERIVATIVES AND SECURITIES FINANCING AGREEMENTS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://axosfinancial.com/role/OFFSETTINGOFDERIVATIVESANDSECURITIESFINANCINGAGREEMENTSTables</ParentRole>
      <Position>98</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R99.htm</HtmlFileName>
      <LongName>9955575 - Disclosure - CUSTOMER, BROKER-DEALER AND CLEARING RECEIVABLES AND PAYABLES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/CUSTOMERBROKERDEALERANDCLEARINGRECEIVABLESANDPAYABLESDetails</Role>
      <ShortName>CUSTOMER, BROKER-DEALER AND CLEARING RECEIVABLES AND PAYABLES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://axosfinancial.com/role/CUSTOMERBROKERDEALERANDCLEARINGRECEIVABLESANDPAYABLESTables</ParentRole>
      <Position>99</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R100.htm</HtmlFileName>
      <LongName>9955576 - Disclosure - OTHER ASSETS - SCHEDULE OF BANK-OWNED LIFE INSURANCE ACTIVITY (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/OTHERASSETSSCHEDULEOFBANKOWNEDLIFEINSURANCEACTIVITYDetails</Role>
      <ShortName>OTHER ASSETS - SCHEDULE OF BANK-OWNED LIFE INSURANCE ACTIVITY (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>100</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R101.htm</HtmlFileName>
      <LongName>9955577 - Disclosure - OTHER ASSETS - SCHEDULE OF FURNITURE , EQUIPMENT AND SOFTWARE (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/OTHERASSETSSCHEDULEOFFURNITUREEQUIPMENTANDSOFTWAREDetails</Role>
      <ShortName>OTHER ASSETS - SCHEDULE OF FURNITURE , EQUIPMENT AND SOFTWARE (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>101</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R102.htm</HtmlFileName>
      <LongName>9955578 - Disclosure - OTHER ASSETS - NARRATIVE (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/OTHERASSETSNARRATIVEDetails</Role>
      <ShortName>OTHER ASSETS - NARRATIVE (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>102</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R103.htm</HtmlFileName>
      <LongName>9955579 - Disclosure - OTHER ASSETS - SCHEDULE OF SUPPLEMENTAL BALANCE SHEET INFORMATION (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/OTHERASSETSSCHEDULEOFSUPPLEMENTALBALANCESHEETINFORMATIONDetails</Role>
      <ShortName>OTHER ASSETS - SCHEDULE OF SUPPLEMENTAL BALANCE SHEET INFORMATION (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>103</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R104.htm</HtmlFileName>
      <LongName>9955580 - Disclosure - OTHER ASSETS - SCHEDULE OF SUPPLEMENTAL CASH FLOW INFORMATION (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/OTHERASSETSSCHEDULEOFSUPPLEMENTALCASHFLOWINFORMATIONDetails</Role>
      <ShortName>OTHER ASSETS - SCHEDULE OF SUPPLEMENTAL CASH FLOW INFORMATION (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>104</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R105.htm</HtmlFileName>
      <LongName>9955581 - Disclosure - OTHER ASSETS - SCHEDULE OF MATURITIES OF LEASE LIABILITIES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/OTHERASSETSSCHEDULEOFMATURITIESOFLEASELIABILITIESDetails</Role>
      <ShortName>OTHER ASSETS - SCHEDULE OF MATURITIES OF LEASE LIABILITIES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>105</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R106.htm</HtmlFileName>
      <LongName>9955582 - Disclosure - OTHER ASSETS - SCHEDULE OF PROPERTY, PLANT, AND EQUIPMENT, LESSOR ASSET UNDER OPERATING LEASE (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/OTHERASSETSSCHEDULEOFPROPERTYPLANTANDEQUIPMENTLESSORASSETUNDEROPERATINGLEASEDetails</Role>
      <ShortName>OTHER ASSETS - SCHEDULE OF PROPERTY, PLANT, AND EQUIPMENT, LESSOR ASSET UNDER OPERATING LEASE (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>106</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R107.htm</HtmlFileName>
      <LongName>9955583 - Disclosure - OTHER ASSETS - SCHEDULE OF OPERATING INCOME (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/OTHERASSETSSCHEDULEOFOPERATINGINCOMEDetails</Role>
      <ShortName>OTHER ASSETS - SCHEDULE OF OPERATING INCOME (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>107</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R108.htm</HtmlFileName>
      <LongName>9955584 - Disclosure - OTHER ASSETS - SCHEDULE OF FUTURE UNDISCOUNTED CASH FLOWS TO BE RECEIVED (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/OTHERASSETSSCHEDULEOFFUTUREUNDISCOUNTEDCASHFLOWSTOBERECEIVEDDetails</Role>
      <ShortName>OTHER ASSETS - SCHEDULE OF FUTURE UNDISCOUNTED CASH FLOWS TO BE RECEIVED (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>108</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R109.htm</HtmlFileName>
      <LongName>9955585 - Disclosure - OTHER ASSETS - SCHEDULE OF INCOME AND TAX BENEFITS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/OTHERASSETSSCHEDULEOFINCOMEANDTAXBENEFITSDetails</Role>
      <ShortName>OTHER ASSETS - SCHEDULE OF INCOME AND TAX BENEFITS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>109</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R110.htm</HtmlFileName>
      <LongName>9955586 - Disclosure - OTHER ASSETS - SCHEDULE OF INVESTMENTS ON BALANCE SHEETS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/OTHERASSETSSCHEDULEOFINVESTMENTSONBALANCESHEETSDetails</Role>
      <ShortName>OTHER ASSETS - SCHEDULE OF INVESTMENTS ON BALANCE SHEETS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>110</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R111.htm</HtmlFileName>
      <LongName>9955587 - Disclosure - GOODWILL AND INTANGIBLE ASSETS - SCHEDULE OF ACTIVITY IN GOODWILL BALANCE (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/GOODWILLANDINTANGIBLEASSETSSCHEDULEOFACTIVITYINGOODWILLBALANCEDetails</Role>
      <ShortName>GOODWILL AND INTANGIBLE ASSETS - SCHEDULE OF ACTIVITY IN GOODWILL BALANCE (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>111</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R112.htm</HtmlFileName>
      <LongName>9955588 - Disclosure - GOODWILL AND INTANGIBLE ASSETS - SCHEDULE OF ACQUIRED INTANGIBLE ASSETS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/GOODWILLANDINTANGIBLEASSETSSCHEDULEOFACQUIREDINTANGIBLEASSETSDetails</Role>
      <ShortName>GOODWILL AND INTANGIBLE ASSETS - SCHEDULE OF ACQUIRED INTANGIBLE ASSETS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>112</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R113.htm</HtmlFileName>
      <LongName>9955589 - Disclosure - GOODWILL AND INTANGIBLE ASSETS - SCHEDULE OF ESTIMATED FUTURE AMORTIZATION EXPENSE OF ACQUIRED INTANGIBLE ASSETS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/GOODWILLANDINTANGIBLEASSETSSCHEDULEOFESTIMATEDFUTUREAMORTIZATIONEXPENSEOFACQUIREDINTANGIBLEASSETSDetails</Role>
      <ShortName>GOODWILL AND INTANGIBLE ASSETS - SCHEDULE OF ESTIMATED FUTURE AMORTIZATION EXPENSE OF ACQUIRED INTANGIBLE ASSETS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>113</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R114.htm</HtmlFileName>
      <LongName>9955590 - Disclosure - DEPOSITS - SCHEDULE OF DEPOSIT ACCOUNTS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/DEPOSITSSCHEDULEOFDEPOSITACCOUNTSDetails</Role>
      <ShortName>DEPOSITS - SCHEDULE OF DEPOSIT ACCOUNTS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>114</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R115.htm</HtmlFileName>
      <LongName>9955591 - Disclosure - DEPOSITS -SCHEDULE OF SCHEDULED MATURITIES OF TIME DEPOSITS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/DEPOSITSSCHEDULEOFSCHEDULEDMATURITIESOFTIMEDEPOSITSDetails</Role>
      <ShortName>DEPOSITS -SCHEDULE OF SCHEDULED MATURITIES OF TIME DEPOSITS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>115</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R116.htm</HtmlFileName>
      <LongName>9955592 - Disclosure - ADVANCES FROM THE FEDERAL HOME LOAN BANK - NARRATIVE (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/ADVANCESFROMTHEFEDERALHOMELOANBANKNARRATIVEDetails</Role>
      <ShortName>ADVANCES FROM THE FEDERAL HOME LOAN BANK - NARRATIVE (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>116</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R117.htm</HtmlFileName>
      <LongName>9955593 - Disclosure - ADVANCES FROM THE FEDERAL HOME LOAN BANK - SCHEDULE OF SCHEDULED MATURITIES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/ADVANCESFROMTHEFEDERALHOMELOANBANKSCHEDULEOFSCHEDULEDMATURITIESDetails</Role>
      <ShortName>ADVANCES FROM THE FEDERAL HOME LOAN BANK - SCHEDULE OF SCHEDULED MATURITIES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>117</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R118.htm</HtmlFileName>
      <LongName>9955594 - Disclosure - VARIABLE INTEREST ENTITIES - NARRATIVE (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/VARIABLEINTERESTENTITIESNARRATIVEDetails</Role>
      <ShortName>VARIABLE INTEREST ENTITIES - NARRATIVE (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>118</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R119.htm</HtmlFileName>
      <LongName>9955595 - Disclosure - VARIABLE INTEREST ENTITIES - SCHEDULE OF VARIABLE INTEREST ENTITIES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/VARIABLEINTERESTENTITIESSCHEDULEOFVARIABLEINTERESTENTITIESDetails</Role>
      <ShortName>VARIABLE INTEREST ENTITIES - SCHEDULE OF VARIABLE INTEREST ENTITIES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>119</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R120.htm</HtmlFileName>
      <LongName>9955596 - Disclosure - VARIABLE INTEREST ENTITIES - SCHEDULE OF SECURED FINANCING (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/VARIABLEINTERESTENTITIESSCHEDULEOFSECUREDFINANCINGDetails</Role>
      <ShortName>VARIABLE INTEREST ENTITIES - SCHEDULE OF SECURED FINANCING (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>120</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R121.htm</HtmlFileName>
      <LongName>9955597 - Disclosure - VARIABLE INTEREST ENTITIES - SCHEDULE OF MATURITIES OF SECURED FINANCINGS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/VARIABLEINTERESTENTITIESSCHEDULEOFMATURITIESOFSECUREDFINANCINGSDetails</Role>
      <ShortName>VARIABLE INTEREST ENTITIES - SCHEDULE OF MATURITIES OF SECURED FINANCINGS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>121</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R122.htm</HtmlFileName>
      <LongName>9955598 - Disclosure - BORROWINGS, SUBORDINATED NOTES AND DEBENTURES - SCHEDULE OF BORROWINGS, SUBORDINATED NOTES AND DEBENTURES (Details)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://axosfinancial.com/role/BORROWINGSSUBORDINATEDNOTESANDDEBENTURESSCHEDULEOFBORROWINGSSUBORDINATEDNOTESANDDEBENTURESDetails</Role>
      <ShortName>BORROWINGS, SUBORDINATED NOTES AND DEBENTURES - SCHEDULE OF BORROWINGS, SUBORDINATED NOTES AND DEBENTURES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>122</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R123.htm</HtmlFileName>
      <LongName>9955599 - Disclosure - BORROWINGS, SUBORDINATED NOTES AND DEBENTURES - SCHEDULE OF MATURITIES OF BORROWINGS, SUBORDINATED NOTES AND DEBENTURES (Details)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://axosfinancial.com/role/BORROWINGSSUBORDINATEDNOTESANDDEBENTURESSCHEDULEOFMATURITIESOFBORROWINGSSUBORDINATEDNOTESANDDEBENTURESDetails</Role>
      <ShortName>BORROWINGS, SUBORDINATED NOTES AND DEBENTURES - SCHEDULE OF MATURITIES OF BORROWINGS, SUBORDINATED NOTES AND DEBENTURES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>123</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R124.htm</HtmlFileName>
      <LongName>9955600 - Disclosure - BORROWINGS, SUBORDINATED NOTES AND DEBENTURES - NARRATIVE (Details)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://axosfinancial.com/role/BORROWINGSSUBORDINATEDNOTESANDDEBENTURESNARRATIVEDetails</Role>
      <ShortName>BORROWINGS, SUBORDINATED NOTES AND DEBENTURES - NARRATIVE (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>124</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R125.htm</HtmlFileName>
      <LongName>9955601 - Disclosure - INCOME TAXES - SCHEDULE OF PROVISION FOR INCOME TAXES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/INCOMETAXESSCHEDULEOFPROVISIONFORINCOMETAXESDetails</Role>
      <ShortName>INCOME TAXES - SCHEDULE OF PROVISION FOR INCOME TAXES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>125</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R126.htm</HtmlFileName>
      <LongName>9955602 - Disclosure - INCOME TAXES - SCHEDULE OF EFFECTIVE INCOME TAX RATE RECONCILIATION (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/INCOMETAXESSCHEDULEOFEFFECTIVEINCOMETAXRATERECONCILIATIONDetails</Role>
      <ShortName>INCOME TAXES - SCHEDULE OF EFFECTIVE INCOME TAX RATE RECONCILIATION (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>126</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R127.htm</HtmlFileName>
      <LongName>9955603 - Disclosure - INCOME TAXES - SCHEDULE OF NET DEFERRED TAX ASSET (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/INCOMETAXESSCHEDULEOFNETDEFERREDTAXASSETDetails</Role>
      <ShortName>INCOME TAXES - SCHEDULE OF NET DEFERRED TAX ASSET (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>127</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R128.htm</HtmlFileName>
      <LongName>9955604 - Disclosure - INCOME TAXES - NARRATIVE (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/INCOMETAXESNARRATIVEDetails</Role>
      <ShortName>INCOME TAXES - NARRATIVE (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>128</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R129.htm</HtmlFileName>
      <LongName>9955605 - Disclosure - INCOME TAXES - SCHEDULE OF UNRECOGNIZED TAX BENEFITS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/INCOMETAXESSCHEDULEOFUNRECOGNIZEDTAXBENEFITSDetails</Role>
      <ShortName>INCOME TAXES - SCHEDULE OF UNRECOGNIZED TAX BENEFITS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>129</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R130.htm</HtmlFileName>
      <LongName>9955606 - Disclosure - INCOME TAXES - SCHEDULE OF INCOME TAXES PAID (NET OF REFUNDS RECEIVED) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/INCOMETAXESSCHEDULEOFINCOMETAXESPAIDNETOFREFUNDSRECEIVEDDetails</Role>
      <ShortName>INCOME TAXES - SCHEDULE OF INCOME TAXES PAID (NET OF REFUNDS RECEIVED) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>130</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R131.htm</HtmlFileName>
      <LongName>9955607 - Disclosure - STOCKHOLDERS' EQUITY - NARRATIVE (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/STOCKHOLDERSEQUITYNARRATIVEDetails</Role>
      <ShortName>STOCKHOLDERS' EQUITY - NARRATIVE (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>131</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R132.htm</HtmlFileName>
      <LongName>9955608 - Disclosure - STOCKHOLDERS’ EQUITY - SCHEDULE OF COMMON STOCK REPURCHASES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/STOCKHOLDERSEQUITYSCHEDULEOFCOMMONSTOCKREPURCHASESDetails</Role>
      <ShortName>STOCKHOLDERS’ EQUITY - SCHEDULE OF COMMON STOCK REPURCHASES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>132</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R133.htm</HtmlFileName>
      <LongName>9955609 - Disclosure - STOCKHOLDERS’ EQUITY - SCHEDULE OF ACCUMULATED OTHER COMPREHENSIVE INCOME (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/STOCKHOLDERSEQUITYSCHEDULEOFACCUMULATEDOTHERCOMPREHENSIVEINCOMEDetails</Role>
      <ShortName>STOCKHOLDERS’ EQUITY - SCHEDULE OF ACCUMULATED OTHER COMPREHENSIVE INCOME (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>133</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R134.htm</HtmlFileName>
      <LongName>9955610 - Disclosure - STOCKHOLDERS’ EQUITY - SCHEDULE OF PRE-TAX AND AFTER-TAX CHANGES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/STOCKHOLDERSEQUITYSCHEDULEOFPRETAXANDAFTERTAXCHANGESDetails</Role>
      <ShortName>STOCKHOLDERS’ EQUITY - SCHEDULE OF PRE-TAX AND AFTER-TAX CHANGES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>134</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R135.htm</HtmlFileName>
      <LongName>9955611 - Disclosure - STOCK-BASED COMPENSATION - NARRATIVE (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/STOCKBASEDCOMPENSATIONNARRATIVEDetails</Role>
      <ShortName>STOCK-BASED COMPENSATION - NARRATIVE (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>135</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R136.htm</HtmlFileName>
      <LongName>9955612 - Disclosure - STOCK-BASED COMPENSATION - SCHEDULE OF CHANGES IN RESTRICTED STOCK UNIT GRANTS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/STOCKBASEDCOMPENSATIONSCHEDULEOFCHANGESINRESTRICTEDSTOCKUNITGRANTSDetails</Role>
      <ShortName>STOCK-BASED COMPENSATION - SCHEDULE OF CHANGES IN RESTRICTED STOCK UNIT GRANTS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>136</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R137.htm</HtmlFileName>
      <LongName>9955613 - Disclosure - EARNINGS PER COMMON SHARE (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/EARNINGSPERCOMMONSHAREDetails</Role>
      <ShortName>EARNINGS PER COMMON SHARE (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://axosfinancial.com/role/EARNINGSPERCOMMONSHARETables</ParentRole>
      <Position>137</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R138.htm</HtmlFileName>
      <LongName>9955614 - Disclosure - COMMITMENTS, CONTINGENCIES AND OFF-BALANCE-SHEET ACTIVITIES - SCHEDULE OF OFF-BALANCE SHEET COMMITMENTS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/COMMITMENTSCONTINGENCIESANDOFFBALANCESHEETACTIVITIESSCHEDULEOFOFFBALANCESHEETCOMMITMENTSDetails</Role>
      <ShortName>COMMITMENTS, CONTINGENCIES AND OFF-BALANCE-SHEET ACTIVITIES - SCHEDULE OF OFF-BALANCE SHEET COMMITMENTS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>138</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R139.htm</HtmlFileName>
      <LongName>9955615 - Disclosure - COMMITMENTS, CONTINGENCIES AND OFF-BALANCE-SHEET ACTIVITIES - NARRATIVE (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/COMMITMENTSCONTINGENCIESANDOFFBALANCESHEETACTIVITIESNARRATIVEDetails</Role>
      <ShortName>COMMITMENTS, CONTINGENCIES AND OFF-BALANCE-SHEET ACTIVITIES - NARRATIVE (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://axosfinancial.com/role/COMMITMENTSCONTINGENCIESANDOFFBALANCESHEETACTIVITIESTables</ParentRole>
      <Position>139</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R140.htm</HtmlFileName>
      <LongName>9955616 - Disclosure - REGULATORY CAPITAL REQUIREMENTS - NARRATIVE (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/REGULATORYCAPITALREQUIREMENTSNARRATIVEDetails</Role>
      <ShortName>REGULATORY CAPITAL REQUIREMENTS - NARRATIVE (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>140</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R141.htm</HtmlFileName>
      <LongName>9955617 - Disclosure - REGULATORY CAPITAL REQUIREMENTS - SCHEDULE OF CAPITAL AMOUNTS, RATIOS, AND REQUIREMENTS UNDER BASEL III (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/REGULATORYCAPITALREQUIREMENTSSCHEDULEOFCAPITALAMOUNTSRATIOSANDREQUIREMENTSUNDERBASELIIIDetails</Role>
      <ShortName>REGULATORY CAPITAL REQUIREMENTS - SCHEDULE OF CAPITAL AMOUNTS, RATIOS, AND REQUIREMENTS UNDER BASEL III (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>141</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R142.htm</HtmlFileName>
      <LongName>9955618 - Disclosure - EMPLOYEE BENEFIT PLAN (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/EMPLOYEEBENEFITPLANDetails</Role>
      <ShortName>EMPLOYEE BENEFIT PLAN (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://axosfinancial.com/role/EMPLOYEEBENEFITPLAN</ParentRole>
      <Position>142</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R143.htm</HtmlFileName>
      <LongName>9955619 - Disclosure - PARENT-ONLY CONDENSED FINANCIAL INFORMATION - CONDENSED BALANCE SHEETS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/PARENTONLYCONDENSEDFINANCIALINFORMATIONCONDENSEDBALANCESHEETSDetails</Role>
      <ShortName>PARENT-ONLY CONDENSED FINANCIAL INFORMATION - CONDENSED BALANCE SHEETS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>143</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R144.htm</HtmlFileName>
      <LongName>9955620 - Disclosure - PARENT-ONLY CONDENSED FINANCIAL INFORMATION - CONDENSED STATEMENTS OF INCOME (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/PARENTONLYCONDENSEDFINANCIALINFORMATIONCONDENSEDSTATEMENTSOFINCOMEDetails</Role>
      <ShortName>PARENT-ONLY CONDENSED FINANCIAL INFORMATION - CONDENSED STATEMENTS OF INCOME (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>144</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R145.htm</HtmlFileName>
      <LongName>9955621 - Disclosure - PARENT-ONLY CONDENSED FINANCIAL INFORMATION - STATEMENTS OF CASH FLOWS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/PARENTONLYCONDENSEDFINANCIALINFORMATIONSTATEMENTSOFCASHFLOWSDetails</Role>
      <ShortName>PARENT-ONLY CONDENSED FINANCIAL INFORMATION - STATEMENTS OF CASH FLOWS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>145</Position>
    </Report>
    <Report instance="ax-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R146.htm</HtmlFileName>
      <LongName>9955622 - Disclosure - SEGMENT REPORTING (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://axosfinancial.com/role/SEGMENTREPORTINGDetails</Role>
      <ShortName>SEGMENT REPORTING (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://axosfinancial.com/role/SEGMENTREPORTINGTables</ParentRole>
      <Position>146</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-K" isDefinitelyFs="true" isUsgaap="true" original="ax-20260630.htm">ax-20260630.htm</File>
    <File>ax-20260630.xsd</File>
    <File>ax-20260630_cal.xml</File>
    <File>ax-20260630_def.xml</File>
    <File>ax-20260630_lab.xml</File>
    <File>ax-20260630_pre.xml</File>
  </InputFiles>
  <SupplementalFiles>
    <File>ax-20260630_g1.jpg</File>
  </SupplementalFiles>
  <BaseTaxonomies>
    <BaseTaxonomy items="16">http://fasb.org/srt/2026</BaseTaxonomy>
    <BaseTaxonomy items="2875">http://fasb.org/us-gaap/2026</BaseTaxonomy>
    <BaseTaxonomy items="15">http://xbrl.sec.gov/cyd/2026</BaseTaxonomy>
    <BaseTaxonomy items="38">http://xbrl.sec.gov/dei/2026</BaseTaxonomy>
    <BaseTaxonomy items="5">http://xbrl.sec.gov/ecd/2026</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
