XML 40 R25.htm IDEA: XBRL DOCUMENT
v3.21.1

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) | 3 Months Ended
--- | ---
Mar. 31, 2021 USD ($) shares
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |
Unrecognized tax benefits and penalties | $ 0
Number of units per baskets | shares | 50,000
Transaction fee | $ 350

X
- Definition Number of Units Per Baskets. + References No definition available. + Details
Name: | bno_NumberOfUnitsPerBaskets
Namespace Prefix: | bno_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition A description of what the Transaction fee during the period. + References No definition available. + Details
Name: | bno_TransactionFee
Namespace Prefix: | bno_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 + Details
Name: | us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration