Derivative Instruments - Effect of Derivative Instruments on Statements of Income and Expenses (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Derivative Instruments, Gain (Loss) [Line Items]
Futures Contracts, Net Realized Gain (Loss)	$ (1,165,795)	$ (1,053,564)
Futures Contracts, Net Unrealized Gain (Loss)	(214,449)	(2,259,997)
Currency Contract [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Futures Contracts, Net Realized Gain (Loss)	(1,165,795)	(1,053,564)
Futures Contracts, Net Unrealized Gain (Loss)	(214,449)	(2,259,997)
Future Contracts, Net Realized and Unrealized Gain (Loss)	$ (1,380,244)	$ (3,313,561)