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v3.22.2.2

Provision for Reclamation Liabilities (Details) - CAD ($) $ in Millions |  | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2022 | Sep. 30, 2022 | Sep. 30, 2021 | Dec. 31, 2021
Provision for Reclamation Liabilities (Details) [Line Items] |  |  |  |
Estimated discounted cash flows of future reclamation costs |  | $ 5.6 |  | $ 8.4
Undiscounted future cash outflows |  | $ 6.0 |  | $ 8.2
Nominal discount rate, percentage |  | 3.76% |  | 0.90%
Reclamation disbursements amount |  | $ 3.0 | $ 2.0 |
Rehabilitation expenses |  |  |  | $ 5.4
Uncollateralized surety bond |  | 7.9 |  | 3.0
Reclamation Liabilities [Member] |  |  |  |
Provision for Reclamation Liabilities (Details) [Line Items] |  |  |  |
Deposit with financial institution pledged as security |  | $ 20.6 |  | $ 15.2
Non adjusting Events [Member] | KSM [Member] |  |  |  |
Provision for Reclamation Liabilities (Details) [Line Items] |  |  |  |
Security deposit | $ 5.4 |  |  |

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- Details
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- Details
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