Convertible debentures (Schedule of detailed information about underlying assumptions) (Details) - Derivative liabilities [Member] - USD ($) |
12 Months Ended | |
|---|---|---|
Oct. 31, 2025 |
Oct. 31, 2024 |
|
| Convertible Debentures [Line Items] | ||
| Expected dividend yield | 0.00% | 0.00% |
| CDN to USD exchange rate (as applicable) | $ 0.7134 | $ 0.7186 |
| Minimum [Member] | ||
| Convertible Debentures [Line Items] | ||
| Volatility factor (based on historical volatility) | 30.00% | 140.00% |
| Risk free interest rate | 2.22% | 3.18% |
| Expected life of conversion features (in months) | 0 months | 0 months |
| Call value | $ 0 | $ 0.02 |
| Maximum [Member] | ||
| Convertible Debentures [Line Items] | ||
| Volatility factor (based on historical volatility) | 129.00% | 203.00% |
| Risk free interest rate | 2.28% | 3.50% |
| Expected life of conversion features (in months) | 12 months | 12 months |
| Call value | $ 0.01 | $ 0.04 |