v3.26.1
Schedule of Trust’s Investments at Fair Value (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Jun. 30, 2025
Jun. 30, 2024
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items]      
Total $ 1,593,496 [1] $ 1,105,737 [1] $ 791,131
Fair Value, Inputs, Level 1 [Member]      
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items]      
Total 1,593,496 1,105,737  
Fair Value, Inputs, Level 2 [Member]      
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items]      
Total  
Fair Value, Inputs, Level 3 [Member]      
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items]      
Total  
Gold [Member] | Fair Value, Inputs, Level 1 [Member]      
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items]      
Total 1,593,496 1,105,737  
Gold [Member] | Fair Value, Inputs, Level 2 [Member]      
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items]      
Total  
Gold [Member] | Fair Value, Inputs, Level 3 [Member]      
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items]      
Total  
[1] Cost of investment in gold bullion: $651,945 and $588,663, respectively.