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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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Amount of investments including trading securities, available-for-sale securities, held-to-maturity securities, and short-term investments classified as other and current.

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