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Euro Deposits - Additional Information (Detail)
3 Months Ended 12 Months Ended
Mar. 31, 2023
USD ($)
Mar. 31, 2023
EUR (€)
Mar. 31, 2022
USD ($)
Dec. 31, 2022
EUR (€)
Mar. 31, 2023
EUR (€)
Dec. 31, 2022
USD ($)
Dec. 31, 2022
EUR (€)
Cash And Cash Equivalents [Abstract]              
Annual nominal rate 1.80%       1.80%    
Principal deposits $ 29,416,443 € 32,292,094 $ 89,158,392 € 679,568,682      
Principal redemptions 49,743,105 € 55,356,812 $ 108,633,073 596,144,853      
Withdrawals (to pay expenses)       € 1,970,473      
Deposits, interest bearing $ 265,633,762       € 244,497,283 $ 285,555,944 € 267,562,001