XML 14 R3.htm IDEA: XBRL DOCUMENT v3.26.1
Statements of Assets and Liabilities (Parenthetical) - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Mar. 31, 2026
Jun. 30, 2025
Schedule of Investments [Abstract]    
Cost of investment in platinum bullion $ 182,134 $ 65,762
Common stock, shares authorized Unlimited Unlimited