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FAIR VALUE OF FINANCIAL INSTRUMENTS - Summary of Fair Value of Derivative Instruments (Details) - USD ($)	Sep. 30, 2023	Dec. 31, 2022
FAIR VALUE OF FINANCIAL INSTRUMENTS
Condensed Statements of Financial Condition Location	Assets
Derivatives not Accounted for as Hedging Instruments	$ (1,388,400)	$ 15,246,200

X

- Definition

Amount of unrealized gain (loss) on open commodity futures contracts.

+ References

No definition available.

+ Details

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Namespace Prefix:	bno_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Indicates line item in statement of financial position that includes derivative asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480434/815-10-50-4A

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	enum2:enumerationSetItemType
Balance Type:	na
Period Type:	instant

X

- References

No definition available.

+ Details

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