Schedule of Investments (Unaudited) - Futures Contracts		9 Months Ended	12 Months Ended
		Sep. 30, 2020 USD ($) Contract	Dec. 31, 2019 USD ($) Contract
Schedule Of Investments [Line Items]
Currency Futures Contracts, Value		$ 740,870,409	$ 229,276,654
Futures [Member] | United States of America, Dollars [Member] | Long [Member]
Schedule Of Investments [Line Items]
Currency Futures Contracts, Number of Contracts | Contract		7,886	2,377
Currency Futures Contracts, Expiration Date		Dec. 31, 2020	Mar. 31, 2020
Currency Futures Contracts, Notional Value		$ 740,708,322	$ 228,329,866
Currency Futures Contracts, Value	[1]	1,174,619	(1,815,323)
Currency Futures Contracts, Unrealized Appreciation (Depreciation)	[1]	$ 1,174,619	$ (1,815,323)

[1] Unrealized Appreciation (Depreciation) and Value are presented above, net by contract.