Derivative Instruments - Effect of Derivative Instruments on Statements of Income and Expenses (Detail) - Currency Futures Contracts [Member] - Not Designated as Hedging Instrument [Member] - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Derivative Instruments, Gain (Loss) [Line Items]
Futures contracts, realized gain (loss)	$ (12,669,194)	$ 7,182,699	$ (24,070,132)	$ 10,140,989
Futures contracts, unrealized gain (loss)	(5,274,992)	(1,360,628)	(10,538,243)	8,159,744
Future Contracts, Net Realized and Unrealized Gain (Loss)	$ (17,944,186)	$ 5,822,071	$ (34,608,375)	$ 18,300,733