Statements of Income and Expenses - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income
Interest Income	$ 5,537,674	$ 7,794,759	$ 4,793,315
Dividends from Affiliates	2,195,434	1,848,304	793,980
Total Income	7,733,108	9,643,063	5,587,295
Expenses
Management Fees	2,618,916	3,972,128	4,976,113
Brokerage Commissions and Fees	77,432	120,918	137,810
Interest Expense	10,911	20,856	9,086
Total Expenses	2,707,259	4,113,902	5,123,009
Less: Waivers	(102,795)	(114,990)	(88,610)
Net Expenses	2,604,464	3,998,912	5,034,399
Net Investment Income (Loss)	5,128,644	5,644,151	552,896
Net Realized Gain (Loss) on
United States Treasury Obligations	61,775	(26,350)	(7,094)
Capital gain distributions from Affiliated Investments	11,446
Currency Futures Contracts	5,422,705	29,619,708	(51,958,105)
Net Realized Gain (Loss)	5,495,926	29,593,358	(51,965,199)
Net Change in Unrealized Gain (Loss) on
United States Treasury Obligations	49,369	45,626	(14,657)
Affiliated Investments	75,700	128,690	(317,334)
Currency Futures Contracts	2,719,194	3,438,120	(9,961,447)
Net Change in Unrealized Gain (Loss)	2,844,263	3,612,436	(10,293,438)
Net Realized and Net Change in Unrealized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Currency Futures Contracts	8,340,189	33,205,794	(62,258,637)
Net Income (Loss)	$ 13,468,833	$ 38,849,945	$ (61,705,741)