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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) | 9 Months Ended
--- | ---
Sep. 30, 2022 USD ($) shares
Number of units per baskets | shares | 50,000
Transaction fee | $ | $ 350
Creations and Redemptions |
Number of units per baskets | shares | 50,000
Transaction fee | $ | $ 350

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

X
- Definition Amount of 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
- Details
Name: | us-gaap_InvestmentTypeAxis=bno_CreationsAndRedemptionsBasketsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |