Service Providers and Related Party Agreements - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Related Party Transaction [Line Items]
Managing owner waived fees	$ 366	$ 10,783
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