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CONTRACTS AND AGREEMENTS - Additional Information (Details) - USD ($)		9 Months Ended
	Oct. 01, 2022	Sep. 30, 2025
Minimum
CONTRACTS AND AGREEMENTS
Commission per round turn		$ 7
Maximum
CONTRACTS AND AGREEMENTS
Commission per round turn		$ 8
Marketing Agreement
CONTRACTS AND AGREEMENTS
Fee percentage	0.025%
Marketing Agreement | BNO's assets in excess of $3 billion | Maximum
CONTRACTS AND AGREEMENTS
Fee percentage		10.00%

X

- Definition

Percentage of base fee.

+ References

No definition available.

+ Details

Name:	bno_BaseFeePercentage
Namespace Prefix:	bno_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the commissions round turn trade including exchange fees.

+ References

No definition available.

+ Details

Name:	bno_CommissionPerRoundTurn
Namespace Prefix:	bno_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	bno_ContractsAndAgreementLineItems
Namespace Prefix:	bno_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_TypeOfArrangementAxis=bno_MarketingAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=bno_GroupFiveMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: