Restoration provisions (Details) - USD ($) |
12 Months Ended | |
|---|---|---|
Oct. 31, 2021 |
Oct. 31, 2020 |
|
| Changes In Restoration Provisions [Roll Forward] | ||
| Restoration provisions, beginning balance | $ 321,400 | |
| Restoration provisions, ending balance | $ 334,233 | $ 321,400 |
| Risk-free interest rate | 0.61% | |
| Restoration provisions | ||
| Changes In Restoration Provisions [Roll Forward] | ||
| Restoration provisions, beginning balance | $ 321,400 | 0 |
| Initial recognition | 321,400 | |
| Interest Recognized | 3,194 | 0 |
| Foreign exchange recognized | 9,639 | |
| Restoration provisions, ending balance | $ 334,233 | $ 321,400 |