<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.25.0.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>70</ContextCount>
  <ElementCount>190</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>29</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>5</UnitCount>
  <MyReports>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>995200090 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.unitedstatesbrentoilfund.com/role/DocumentDocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>995200100 - Statement - Statements of Financial Condition</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.unitedstatesbrentoilfund.com/role/StatementStatementsOfFinancialCondition</Role>
      <ShortName>Statements of Financial Condition</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>995200105 - Statement - Statements of Financial Condition (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.unitedstatesbrentoilfund.com/role/StatementStatementsOfFinancialConditionParenthetical</Role>
      <ShortName>Statements of Financial Condition (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>995200200 - Statement - Schedule of Investments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.unitedstatesbrentoilfund.com/role/StatementScheduleOfInvestments</Role>
      <ShortName>Schedule of Investments</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>995200205 - Statement - Schedule of Investments (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.unitedstatesbrentoilfund.com/role/StatementScheduleOfInvestmentsParenthetical</Role>
      <ShortName>Schedule of Investments (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>995200300 - Statement - Statements of Operations</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.unitedstatesbrentoilfund.com/role/StatementStatementsOfOperations</Role>
      <ShortName>Statements of Operations</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>995200400 - Statement - Statements of Changes in Partner's Capital</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.unitedstatesbrentoilfund.com/role/StatementStatementsOfChangesInPartnerSCapital</Role>
      <ShortName>Statements of Changes in Partner's Capital</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>995200405 - Statement - Statements of Changes in Partner's Capital (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.unitedstatesbrentoilfund.com/role/StatementStatementsOfChangesInPartnerSCapitalParenthetical</Role>
      <ShortName>Statements of Changes in Partner's Capital (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>995200500 - Statement - Statements of Cash Flows</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.unitedstatesbrentoilfund.com/role/StatementStatementsOfCashFlows</Role>
      <ShortName>Statements of Cash Flows</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>995210101 - Disclosure - ORGANIZATION AND BUSINESS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.unitedstatesbrentoilfund.com/role/DisclosureOrganizationAndBusiness</Role>
      <ShortName>ORGANIZATION AND BUSINESS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>995210201 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.unitedstatesbrentoilfund.com/role/DisclosureSummaryOfSignificantAccountingPolicies</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>995210301 - Disclosure - FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.unitedstatesbrentoilfund.com/role/DisclosureFeesPaidByFundAndRelatedPartyTransactions</Role>
      <ShortName>FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>995210401 - Disclosure - CONTRACTS AND AGREEMENTS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.unitedstatesbrentoilfund.com/role/DisclosureContractsAndAgreements</Role>
      <ShortName>CONTRACTS AND AGREEMENTS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>995210501 - Disclosure - FINANCIAL INSTRUMENTS, OFF-BALANCE SHEET RISKS AND CONTINGENCIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.unitedstatesbrentoilfund.com/role/DisclosureFinancialInstrumentsOffBalanceSheetRisksAndContingencies</Role>
      <ShortName>FINANCIAL INSTRUMENTS, OFF-BALANCE SHEET RISKS AND CONTINGENCIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>995210601 - Disclosure - FINANCIAL HIGHLIGHTS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.unitedstatesbrentoilfund.com/role/DisclosureFinancialHighlights</Role>
      <ShortName>FINANCIAL HIGHLIGHTS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>995210701 - Disclosure - QUARTERLY FINANCIAL DATA</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.unitedstatesbrentoilfund.com/role/DisclosureQuarterlyFinancialData</Role>
      <ShortName>QUARTERLY FINANCIAL DATA</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>995210801 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.unitedstatesbrentoilfund.com/role/DisclosureFairValueOfFinancialInstruments</Role>
      <ShortName>FAIR VALUE OF FINANCIAL INSTRUMENTS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>995210901 - Disclosure - SUBSEQUENT EVENTS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.unitedstatesbrentoilfund.com/role/DisclosureSubsequentEvents</Role>
      <ShortName>SUBSEQUENT EVENTS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.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>19</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.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>20</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.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>21</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.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>22</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>99920202 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.unitedstatesbrentoilfund.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>99930403 - Disclosure - CONTRACTS AND AGREEMENTS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.unitedstatesbrentoilfund.com/role/DisclosureContractsAndAgreementsTables</Role>
      <ShortName>CONTRACTS AND AGREEMENTS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.unitedstatesbrentoilfund.com/role/DisclosureContractsAndAgreements</ParentRole>
      <Position>24</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>99930603 - Disclosure - FINANCIAL HIGHLIGHTS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.unitedstatesbrentoilfund.com/role/DisclosureFinancialHighlightsTables</Role>
      <ShortName>FINANCIAL HIGHLIGHTS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.unitedstatesbrentoilfund.com/role/DisclosureFinancialHighlights</ParentRole>
      <Position>25</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>99930703 - Disclosure - QUARTERLY FINANCIAL DATA (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.unitedstatesbrentoilfund.com/role/DisclosureQuarterlyFinancialDataTables</Role>
      <ShortName>QUARTERLY FINANCIAL DATA (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.unitedstatesbrentoilfund.com/role/DisclosureQuarterlyFinancialData</ParentRole>
      <Position>26</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>99930803 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.unitedstatesbrentoilfund.com/role/DisclosureFairValueOfFinancialInstrumentsTables</Role>
      <ShortName>FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.unitedstatesbrentoilfund.com/role/DisclosureFairValueOfFinancialInstruments</ParentRole>
      <Position>27</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>99940101 - Disclosure - ORGANIZATION AND BUSINESS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.unitedstatesbrentoilfund.com/role/DisclosureOrganizationAndBusinessDetails</Role>
      <ShortName>ORGANIZATION AND BUSINESS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.unitedstatesbrentoilfund.com/role/DisclosureOrganizationAndBusiness</ParentRole>
      <Position>28</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>99940201 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.unitedstatesbrentoilfund.com/role/DisclosureSummaryOfSignificantAccountingPoliciesDetails</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.unitedstatesbrentoilfund.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>99940301 - Disclosure - FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.unitedstatesbrentoilfund.com/role/DisclosureFeesPaidByFundAndRelatedPartyTransactionsDetails</Role>
      <ShortName>FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.unitedstatesbrentoilfund.com/role/DisclosureFeesPaidByFundAndRelatedPartyTransactions</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>99940401 - Disclosure - CONTRACTS AND AGREEMENTS - Brokerage Commissions (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.unitedstatesbrentoilfund.com/role/DisclosureContractsAndAgreementsBrokerageCommissionsDetails</Role>
      <ShortName>CONTRACTS AND AGREEMENTS - Brokerage Commissions (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>31</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>99940402 - Disclosure - CONTRACTS AND AGREEMENTS - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.unitedstatesbrentoilfund.com/role/DisclosureContractsAndAgreementsAdditionalInformationDetails</Role>
      <ShortName>CONTRACTS AND AGREEMENTS - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>32</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>99940501 - Disclosure - FINANCIAL INSTRUMENTS, OFF-BALANCE SHEET RISKS AND CONTINGENCIES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.unitedstatesbrentoilfund.com/role/DisclosureFinancialInstrumentsOffBalanceSheetRisksAndContingenciesDetails</Role>
      <ShortName>FINANCIAL INSTRUMENTS, OFF-BALANCE SHEET RISKS AND CONTINGENCIES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.unitedstatesbrentoilfund.com/role/DisclosureFinancialInstrumentsOffBalanceSheetRisksAndContingencies</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>99940601 - Disclosure - FINANCIAL HIGHLIGHTS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.unitedstatesbrentoilfund.com/role/DisclosureFinancialHighlightsDetails</Role>
      <ShortName>FINANCIAL HIGHLIGHTS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.unitedstatesbrentoilfund.com/role/DisclosureFinancialHighlightsTables</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>99940701 - Disclosure - QUARTERLY FINANCIAL DATA (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.unitedstatesbrentoilfund.com/role/DisclosureQuarterlyFinancialDataDetails</Role>
      <ShortName>QUARTERLY FINANCIAL DATA (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.unitedstatesbrentoilfund.com/role/DisclosureQuarterlyFinancialDataTables</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>99940801 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS - Summary of valuation of BNO'S securities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.unitedstatesbrentoilfund.com/role/DisclosureFairValueOfFinancialInstrumentsSummaryOfValuationOfBnoSSecuritiesDetails</Role>
      <ShortName>FAIR VALUE OF FINANCIAL INSTRUMENTS - Summary of valuation of BNO'S securities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>36</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>99940802 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS - Summary of Fair Value of Derivative Instruments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.unitedstatesbrentoilfund.com/role/DisclosureFairValueOfFinancialInstrumentsSummaryOfFairValueOfDerivativeInstrumentsDetails</Role>
      <ShortName>FAIR VALUE OF FINANCIAL INSTRUMENTS - Summary of Fair Value of Derivative Instruments (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>37</Position>
    </Report>
    <Report instance="bno-20241231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>99940803 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS - Summary of Effect of Derivative Instruments on Statements of Operations (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.unitedstatesbrentoilfund.com/role/DisclosureFairValueOfFinancialInstrumentsSummaryOfEffectOfDerivativeInstrumentsOnStatementsOfOperationsDetails</Role>
      <ShortName>FAIR VALUE OF FINANCIAL INSTRUMENTS - Summary of Effect of Derivative Instruments on Statements of Operations (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>38</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File>bno-20241231.xsd</File>
    <File>bno-20241231_cal.xml</File>
    <File>bno-20241231_def.xml</File>
    <File>bno-20241231_lab.xml</File>
    <File>bno-20241231_pre.xml</File>
    <File doctype="10-K" isDefinitelyFs="true" isUsgaap="true" original="bno-20241231x10k.htm">bno-20241231x10k.htm</File>
  </InputFiles>
  <SupplementalFiles>
    <File>bno-20241231x10k005.jpg</File>
    <File>bno-20241231x10k006.jpg</File>
    <File>bno-20241231x10k007.jpg</File>
    <File>bno-20241231x10k008.jpg</File>
  </SupplementalFiles>
  <BaseTaxonomies>
    <BaseTaxonomy items="248">http://fasb.org/us-gaap/2024</BaseTaxonomy>
    <BaseTaxonomy items="14">http://xbrl.sec.gov/cyd/2024</BaseTaxonomy>
    <BaseTaxonomy items="38">http://xbrl.sec.gov/dei/2024</BaseTaxonomy>
    <BaseTaxonomy items="5">http://xbrl.sec.gov/ecd/2024</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
