Share Creations and Redemptions - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2019 USD ($) shares
Share Creations And Redemptions [Abstract]
Number of shares for creation and redemption from fund by authorized participants in specified quantity	50,000
Transaction fee per order | $	$ 200
Number of shares purchased from fund by authorized participants in specified quantity	50,000
Description of calculations methodology use in NAV at time of purchase	The total payment required to create each Basket is the Net Asset Value of 50,000 Shares as of the closing time of the NYSE Arca or the last to close of the exchanges on which the Index Commodities are traded, whichever is later, on the purchase order date. Baskets will be issued as of 12:00 p.m. ET, on the business day immediately following the purchase order date at the Net Asset Value per Share as of the closing time of the NYSE Arca or the last to close of the exchanges on which the Index Commodities are traded, whichever is later, on the purchase order date during the continuous offering period, but only if the required payment has been timely received.
Description of calculations methodology use in NAV at time of redemption	The redemption proceeds from the Fund consists of the cash redemption amount equal to the Net Asset Value of the number of Basket(s) requested in the Authorized Participant’s redemption order as of the closing time of the NYSE Arca or the last to close of the exchanges on which the Index Commodities are traded, whichever is later, on the redemption order date.