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
	Mar. 31, 2026	Mar. 31, 2025
Derivative Instruments Gain (Loss) [Line Items]
Futures contracts, realized gain (loss)	$ (1,771,292)	$ 1,350,485
Futures contracts, unrealized gain (loss)	(1,578,648)	508,509
Future Contracts, Net Realized and Unrealized Gain (Loss)	$ (3,349,940)	$ 1,858,994