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Service Providers and Related Party Agreements - Additional Information (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Related Party Transaction [Line Items]      
Managing owner waived fees $ 109,725 $ 29,150 $ 38,061
Managing Owner [Member]      
Related Party Transaction [Line Items]      
Management fee percentage per annum of daily NAV 0.75%    
Fee waiver termination notice period The Managing Owner has contractually agreed to waive indefinitely the fees that it receives in an amount equal to the indirect management fees that the Fund incurs through its investments in affiliated money market mutual funds and/or affiliated T-Bill ETFs. The Managing Owner may terminate this fee waiver on 60 days’ notice.    
Fee waiver termination notice period 60 days