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Segmented information - Information about major customers (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
SEGMENTED INFORMATION |  |
Revenues | $ 786.5 | $ 604.4
Major Customer |  |
SEGMENTED INFORMATION |  |
Percentage of entity's revenue | 91.60% | 90.40%
Customer |  |
SEGMENTED INFORMATION |  |
Revenues | $ 720.7 | $ 546.2
Rainy River | Customers one |  |
SEGMENTED INFORMATION |  |
Revenues | 206.0 | 174.1
Rainy River | Customers two |  |
SEGMENTED INFORMATION |  |
Revenues | 198.6 | 134.3
Rainy River | Customers three |  |
SEGMENTED INFORMATION |  |
Revenues | 99.3 | 112.1
New Afton | Customers one |  |
SEGMENTED INFORMATION |  |
Revenues | 125.7 | 76.1
New Afton | Customers two |  |
SEGMENTED INFORMATION |  |
Revenues | $ 91.1 | $ 49.6

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