Derivative Instruments - Effect of Derivative Instruments on Statements of Income and Expenses (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Derivative Instruments, Gain (Loss) [Line Items]
Futures contracts, realized gain (loss)	$ (16,351,030)	$ 66,941,679	$ 26,417,232
Futures contracts, unrealized gain (loss)	3,109,252	(3,403,880)	(396,346)
Currency Futures Contracts [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Futures contracts, realized gain (loss)	(16,351,030)	66,941,679	26,417,232
Futures contracts, unrealized gain (loss)	3,109,252	(3,403,880)	(396,346)
Future Contracts, Net Realized and Unrealized Gain (Loss)	$ (13,241,778)	$ 63,537,799	$ 26,020,886