XML 21 R7.htm IDEA: XBRL DOCUMENT
v3.22.2.2

Condensed Statements of Operations (Unaudited) (Parenthetical) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Condensed Statements of Operations (Unaudited) |  |  |  |
Interest income | 5.00% | 5.00% | 5.00% | 5.00%

X
- Definition The maximum percentage of paid in kind amount of interest income. + References No definition available. + Details
Name: | bno_InterestIncomeMaximumPercentageOfPaidInKind
Namespace Prefix: | bno_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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