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FAIR VALUE OF FINANCIAL INSTRUMENTS - Valuation of BNO'S Securities (Details) - USD ($) | Jun. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Exchange-Traded Futures Contracts |  |
Foreign Contracts | $ (1,081,430) | $ 1,161,610
United States [Member] |  |
Short-Term Investments | 369,208,444 |
Exchange-Traded Futures Contracts |  |
Foreign Contracts | (1,081,430) |
Foreign Contracts [Member] |  |
Short-Term Investments |  | 78,785,251
Exchange-Traded Futures Contracts |  |
Foreign Contracts |  | 1,161,610
Fair Value, Inputs, Level 1 [Member] | United States [Member] |  |
Short-Term Investments | 369,208,444 |
Exchange-Traded Futures Contracts |  |
Foreign Contracts | (1,081,430) |
Fair Value, Inputs, Level 1 [Member] | Foreign Contracts [Member] |  |
Short-Term Investments |  | 78,785,251
Exchange-Traded Futures Contracts |  |
Foreign Contracts |  | 1,161,610
Fair Value, Inputs, Level 2 [Member] | United States [Member] |  |
Short-Term Investments | 0 |
Exchange-Traded Futures Contracts |  |
Foreign Contracts | 0 |
Fair Value, Inputs, Level 2 [Member] | Foreign Contracts [Member] |  |
Short-Term Investments |  | 0
Exchange-Traded Futures Contracts |  |
Foreign Contracts |  | 0
Fair Value, Inputs, Level 3 [Member] | United States [Member] |  |
Short-Term Investments | 0 |
Exchange-Traded Futures Contracts |  |
Foreign Contracts | $ 0 |
Fair Value, Inputs, Level 3 [Member] | Foreign Contracts [Member] |  |
Short-Term Investments |  | 0
Exchange-Traded Futures Contracts |  |
Foreign Contracts |  | $ 0

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