Combined Statements of Financial Condition (Current Period Unaudited) (Parentheticals) - USD ($) $ in Thousands |
Mar. 31, 2026 |
Sep. 30, 2025 |
|---|---|---|
| Investments in Gold, at cost | $ 19,436,548 | $ 14,202,521 |
| SPDR Gold Mini Shares Trust [Member] | ||
| Investments in Gold, at cost | $ 19,436,548 | $ 14,202,521 |
| Par value (in dollars per share) | $ 0 | $ 0 |
| Investment in Gold [Member] | ||
| Investments in Gold, at cost | $ 19,436,548 | $ 14,202,521 |
| Investment in Gold [Member] | SPDR Gold Mini Shares Trust [Member] | ||
| Investments in Gold, at cost | $ 19,436,548 | $ 14,202,521 |
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