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FINANCIAL HIGHLIGHTS (Details) - $ / shares | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Per Share Operating Performance: |  |
Net asset value, beginning of year | $ 27.39 | $ 28.26
Total income (loss) | 4.66 | (1.57)
Total expenses | (0.09) | (0.06)
Net increase (decrease) in net asset value | 4.57 | (1.63)
Net asset value, end of year | $ 31.96 | $ 26.63
Total Return | 16.68% | (5.77%)
Ratios to Average Net Assets |  |
Total income (loss) | 15.49% | (5.69%)
Management fees | 0.75% | 0.75%
Total expenses excluding management fees | 0.45% | 0.14%
Net income (loss) | 15.20% | (5.90%)

X
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Representing percentage value of management fees on net assets. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- Definition Representing per share value of total expense. + References No definition available. + Details
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Period Type: | duration

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- Definition Representing per share value of total income. + References No definition available. + Details
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Namespace Prefix: | bno_
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