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Statements of Cash Flows (Unaudited)
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2022
USD ($)
Jun. 30, 2021
USD ($)
Jun. 30, 2022
USD ($)
Jun. 30, 2021
USD ($)
Dec. 31, 2021
USD ($)
Cash flows from operating activities          
Net Comprehensive Income (Loss) $ (122,191) $ (179,067) $ (259,802) $ (347,997)  
Adjustments to reconcile net comprehensive income (loss) to net cash provided by (used in) operating activities:          
Accrued Sponsor’s fee     (20,888) 12,653  
Net cash provided by (used in) operating activities     (280,690) (335,344)  
Cash flows from financing activities          
Proceeds from purchases of redeemable capital Shares     19,151,146 130,131,963  
Redemptions of redeemable capital Shares     (57,727,353) (75,016,335)  
Net cash provided by (used in) financing activities     (38,576,207) 55,115,628  
Effect of exchange rate on cash     (2,230,358) 4,753,977  
Net change in cash     (41,087,255) 59,534,261  
Cash at beginning of period     139,650,371 150,588,080 $ 150,588,080
Cash at end of period $ 98,563,116 $ 210,122,341 98,563,116 210,122,341 $ 139,650,371
Supplemental disclosure of cash flow information          
Cash paid for interest     $ 0 $ 0