Reclamation and Environmental - Schedule of Variables of Weighted Average (Details) |
9 Months Ended | 12 Months Ended |
|---|---|---|
Mar. 31, 2026 |
Jun. 30, 2025 |
|
| Environmental Remediation Obligations [Abstract] | ||
| Weighted-average credit adjusted risk free rate | 9.90% | 9.90% |
| Weighted-average inflation rate | 2.53% | 2.53% |