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Australian Dollar Deposits - Additional Information (Detail)
 6 Months Ended 12 Months Ended
Jun. 30, 2023
USD ($)
Jun. 30, 2023
AUD ($)
Jun. 30, 2022
USD ($)
Dec. 31, 2022
AUD ($)
Jun. 30, 2023
AUD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2022
AUD ($)
Cash and Cash Equivalents [Abstract]              
Annual nominal rate 1.52%       1.52%    
Principal deposits $ 6,690,122 $ 9,898,066 $ 11,053,911 $ 34,667,570      
Principal redemptions 20,071,469 $ 19,796,132 $ 7,104,100 49,506,491      
Cash paid for Sponsor's fee       $ 407,222      
Deposits, interest bearing $ 72,475,172       $ 108,878,728 $ 80,548,483 $ 118,776,794