XML 41 R26.htm IDEA: XBRL DOCUMENT
v3.25.1

FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2025
FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS |  |  |
Percentage of management fee in average daily total net assets | 0.75% |  |
Registration fees and offering expenses | $ 0 | $ 0 |
Scenario Forecast |  |  |
FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS |  |  |
Estimated directors fees and expenses |  |  | $ 48,000
Investor reporting costs |  |  | 300,000
Related Party | Related public funds other than Usci and Cper |  |  |
FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS |  |  |
Licensing fee expense percentage on net assets | 0.015% |  |
Related Party | Scenario Forecast | Company And Other Related Public Funds |  |  |
FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS |  |  |
Estimated directors fees and expenses |  |  | $ 883,000

X
- Definition Estimated directors fees and expenses. + References No definition available. + Details
Name: | bno_EstimatedDirectorsFeesAndExpenses
Namespace Prefix: | bno_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | bno_FeesPaidByFundAndRelatedPartyTransactionsLineItems
Namespace Prefix: | bno_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents investor reporting costs. + References No definition available. + Details
Name: | bno_InvestorReportingCosts
Namespace Prefix: | bno_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the percentage paid for license fee expense on net assets. + References No definition available. + Details
Name: | bno_LicensingFeeExpensePercentageOnNetAssets
Namespace Prefix: | bno_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fee percentage per annum of average daily total net assets. + References No definition available. + Details
Name: | bno_PercentageOfManagementFeeInAverageDailyTotalNetAssets
Namespace Prefix: | bno_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of registration fee expense for issuance of shares or units. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section 45 -Paragraph 3 -Subparagraph (m) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479105/946-220-45-3 + Details
Name: | us-gaap_InvestmentCompanyRegistrationExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_RelatedPartyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=bno_RelatedPublicFundsOtherThanUsciAndCperMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=bno_CompanyAndOtherRelatedPublicFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |