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FAIR VALUE OF FINANCIAL INSTRUMENTS - Summary of Fair Value of Derivative Instruments (Details) - USD ($) | Jun. 30, 2025 | Dec. 31, 2024
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FAIR VALUE OF FINANCIAL INSTRUMENTS |  |
Derivatives not Accounted for as Hedging Instruments - Futures - Commodity Contracts | $ (10,517,750) | $ 2,601,040

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- Definition Amount of unrealized gain (loss) on open commodity futures contracts. + References No definition available. + Details
Name: | bno_UnrealizedGainLossOnOpenCommodityFuturesContractsCurrentAndNoncurrent
Namespace Prefix: | bno_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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