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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) | 3 Months Ended | 9 Months Ended
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Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Accounting Policies [Abstract] |  |  |  |
Distributed earnings | $ 0 | $ 0 | $ 0 | $ 0
Average charges paid to broker per round-turn trade, maximum | $ 5 | $ 5 | $ 5 | $ 5

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- Definition The total amount of dividends declared in the period for each class of stock and the contractual amount of dividends (or interest on participating income bonds) that must be paid for the period (for example, unpaid cumulative dividends). Dividends declared in the current period do not include dividends declared in respect of prior-period unpaid cumulative dividends. Preferred dividends that are cumulative only if earned are deducted only to the extent that they are earned. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 60B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482689/260-10-45-60B + Details
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- Definition Average charges paid to broker per round turn trade maximum. + References No definition available. + Details
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