Statement of Changes in Shareholders' Equity (Unaudited) - USD ($)	Total	General Shares [Member]	Shares [Member]
Balance - Value at Dec. 31, 2019	$ 228,317,217	$ 1,038	$ 228,316,179
Balance - Shares at Dec. 31, 2019		40	8,800,000
Purchases of Shares - Value	891,069,735		$ 891,069,735
Purchases of Shares - Shares			32,800,000
Redemption of Shares - Value	(141,817,950)		$ (141,817,950)
Redemption of Shares - Shares			(5,200,000)
Net Increase (Decrease) due to Share Transactions, value	749,251,785		$ 749,251,785
Net Increase (Decrease) due to Share Transactions, shares			27,600,000
Net Income (Loss)
Net Investment Income (Loss)	627,963	$ (25)	$ 627,988
Net Realized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Currency Futures Contracts	3,647,504	(142)	3,647,646
Net Change in Unrealized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Currency Futures Contracts	(5,172,795)	202	(5,172,997)
Net Income (Loss)	(897,328)	35	(897,363)
Net Change in Shareholders' Equity, value	748,354,457	35	$ 748,354,422
Net Change in Shareholders' Equity, shares			27,600,000
Balance - Value at Mar. 31, 2020	976,671,674	$ 1,073	$ 976,670,601
Balance - Shares at Mar. 31, 2020		40	36,400,000
Balance - Value at Dec. 31, 2020	366,185,815	$ 970	$ 366,184,845
Balance - Shares at Dec. 31, 2020		40	15,100,000
Purchases of Shares - Value	216,360,170		$ 216,360,170
Purchases of Shares - Shares			8,800,000
Redemption of Shares - Value	(218,266,804)		$ (218,266,804)
Redemption of Shares - Shares			(8,900,000)
Net Increase (Decrease) due to Share Transactions, value	(1,906,634)		$ (1,906,634)
Net Increase (Decrease) due to Share Transactions, shares			(100,000)
Net Income (Loss)
Net Investment Income (Loss)	(618,996)	$ (2)	$ (618,994)
Net Realized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Currency Futures Contracts	3,101,877	9	3,101,868
Net Change in Unrealized Gain (Loss) on United States Treasury Obligations, Affiliated Investments and Currency Futures Contracts	9,918,720	27	9,918,693
Net Income (Loss)	12,401,601	34	12,401,567
Net Change in Shareholders' Equity, value	10,494,967	34	$ 10,494,933
Net Change in Shareholders' Equity, shares			(100,000)
Balance - Value at Mar. 31, 2021	$ 376,680,782	$ 1,004	$ 376,679,778
Balance - Shares at Mar. 31, 2021		40	15,000,000