Statement of Changes in Shareholders' Equity (Unaudited) - USD ($)	Total	General Shares [Member]	Shares [Member]
Balance - Value at Dec. 31, 2018	$ 29,369,977	$ 839	$ 29,369,138
Balance - Shares at Dec. 31, 2018		40	1,400,000
Purchases of Shares - Value	16,738,833		$ 16,738,833
Purchases of Shares - Shares			800,000
Redemption of Shares - Value	(8,261,775)		$ (8,261,775)
Redemption of Shares - Shares			(400,000)
Net Increase (Decrease) due to Share Transactions, value	8,477,058		$ 8,477,058
Net Increase (Decrease) due to Share Transactions, shares			400,000
Net Income (Loss)
Net Investment Income (Loss)	406,721	$ 9	$ 406,712
Net Realized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Currency Futures Contracts	(1,193,058)	(25)	(1,193,033)
Net Change in Unrealized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Currency Futures Contracts	(687,588)	(15)	(687,573)
Net Income (Loss)	(1,473,925)	(31)	(1,473,894)
Net Change in Shareholders' Equity, value	7,003,133	(31)	$ 7,003,164
Net Change in Shareholders' Equity, shares			400,000
Balance - Value at Sep. 30, 2019	36,373,110	$ 808	$ 36,372,302
Balance - Shares at Sep. 30, 2019		40	1,800,000
Balance - Value at Jun. 30, 2019	37,687,518	$ 838	$ 37,686,680
Balance - Shares at Jun. 30, 2019		40	1,800,000
Purchases of Shares - Value	4,136,842		$ 4,136,842
Purchases of Shares - Shares			200,000
Redemption of Shares - Value	(4,119,110)		$ (4,119,110)
Redemption of Shares - Shares			(200,000)
Net Increase (Decrease) due to Share Transactions, value	17,732		$ 17,732
Net Income (Loss)
Net Investment Income (Loss)	135,518	$ 7	135,511
Net Realized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Currency Futures Contracts	(831,241)	(22)	(831,219)
Net Change in Unrealized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Currency Futures Contracts	(636,417)	(15)	(636,402)
Net Income (Loss)	(1,332,140)	(30)	(1,332,110)
Net Change in Shareholders' Equity, value	(1,314,408)	(30)	(1,314,378)
Balance - Value at Sep. 30, 2019	36,373,110	$ 808	$ 36,372,302
Balance - Shares at Sep. 30, 2019		40	1,800,000
Balance - Value at Dec. 31, 2019	41,005,756	$ 820	$ 41,004,936
Balance - Shares at Dec. 31, 2019		40	2,000,000
Purchases of Shares - Value	53,860,567		$ 53,860,567
Purchases of Shares - Shares			2,600,000
Redemption of Shares - Value	(16,297,601)		$ (16,297,601)
Redemption of Shares - Shares			(800,000)
Net Increase (Decrease) due to Share Transactions, value	37,562,966		$ 37,562,966
Net Increase (Decrease) due to Share Transactions, shares			1,800,000
Net Income (Loss)
Net Investment Income (Loss)	(71,403)	$ (1)	$ (71,402)
Net Realized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Currency Futures Contracts	1,777,394	32	1,777,362
Net Change in Unrealized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Currency Futures Contracts	(835,926)	(15)	(835,911)
Net Income (Loss)	870,065	16	870,049
Net Change in Shareholders' Equity, value	38,433,031	16	$ 38,433,015
Net Change in Shareholders' Equity, shares			1,800,000
Balance - Value at Sep. 30, 2020	79,438,787	$ 836	$ 79,437,951
Balance - Shares at Sep. 30, 2020		40	3,800,000
Balance - Value at Jun. 30, 2020	52,620,587	$ 810	$ 52,619,777
Balance - Shares at Jun. 30, 2020		40	2,600,000
Purchases of Shares - Value	33,581,180		$ 33,581,180
Purchases of Shares - Shares			1,600,000
Redemption of Shares - Value	(8,270,476)		$ (8,270,476)
Redemption of Shares - Shares			(400,000)
Net Increase (Decrease) due to Share Transactions, value	25,310,704		$ 25,310,704
Net Increase (Decrease) due to Share Transactions, shares			1,200,000
Net Income (Loss)
Net Investment Income (Loss)	(112,995)	$ (2)	$ (112,993)
Net Realized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Currency Futures Contracts	1,722,055	31	1,722,024
Net Change in Unrealized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Currency Futures Contracts	(101,564)	(3)	(101,561)
Net Income (Loss)	1,507,496	26	1,507,470
Net Change in Shareholders' Equity, value	26,818,200	26	$ 26,818,174
Net Change in Shareholders' Equity, shares			1,200,000
Balance - Value at Sep. 30, 2020	$ 79,438,787	$ 836	$ 79,437,951
Balance - Shares at Sep. 30, 2020		40	3,800,000