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FAIR VALUE OF FINANCIAL INSTRUMENTS - Summary of valuation of BNO'S securities (Details) - USD ($) | Jun. 30, 2025 | Dec. 31, 2024
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FAIR VALUE OF FINANCIAL INSTRUMENTS |  |
Short-Term Investments | $ 45,000,000 | $ 75,000,000
Exchange-Traded Futures Contracts |  |
Foreign Contracts | (10,517,750) | 2,601,040
Level I |  |
FAIR VALUE OF FINANCIAL INSTRUMENTS |  |
Short-Term Investments | 45,000,000 | 75,000,000
Exchange-Traded Futures Contracts |  |
Foreign Contracts | (10,517,750) | 2,601,040
Level II |  |
FAIR VALUE OF FINANCIAL INSTRUMENTS |  |
Short-Term Investments | 0 | 0
Exchange-Traded Futures Contracts |  |
Foreign Contracts | 0 | 0
Level III |  |
FAIR VALUE OF FINANCIAL INSTRUMENTS |  |
Short-Term Investments | 0 | 0
Exchange-Traded Futures Contracts |  |
Foreign Contracts | $ 0 | $ 0

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