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Financial risk management - Liquidity risk (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
DEBT COMMITMENTS |  |
Trade and other payables | $ 229.0 | $ 170.9
Long-term debt | 396.0 | 394.9
Interest payable on long-term debt | 120.0 | 150.0
Total debt commitments | 1,578.0 | 1,503.0
New Afton |  |
DEBT COMMITMENTS |  |
Non-current financial liabilities | 659.0 | 598.6
Rainy River gold stream obligation |  |
DEBT COMMITMENTS |  |
Non-current financial liabilities | 217.0 | 225.7
Accounts Payable excluding current portion of Gold Stream Obligation |  |
DEBT COMMITMENTS |  |
Trade and other payables | 182.0 | 128.7
Principle of Long Term Debt |  |
DEBT COMMITMENTS |  |
Long-term debt | 400.0 | $ 400.0
Less than 1 year |  |
DEBT COMMITMENTS |  |
Trade and other payables | 182.0 |
Long-term debt | 0.0 |
Interest payable on long-term debt | 30.0 |
Total debt commitments | 288.7 |
Less than 1 year | New Afton |  |
DEBT COMMITMENTS |  |
Non-current financial liabilities | 42.7 |
Less than 1 year | Rainy River gold stream obligation |  |
DEBT COMMITMENTS |  |
Non-current financial liabilities | 34.0 |
Between 1 and 3 years |  |
DEBT COMMITMENTS |  |
Trade and other payables | 0.0 |
Long-term debt | 0.0 |
Interest payable on long-term debt | 60.0 |
Total debt commitments | 283.3 |
Between 1 and 3 years | New Afton |  |
DEBT COMMITMENTS |  |
Non-current financial liabilities | 146.3 |
Between 1 and 3 years | Rainy River gold stream obligation |  |
DEBT COMMITMENTS |  |
Non-current financial liabilities | 77.0 |
4-5 years |  |
DEBT COMMITMENTS |  |
Trade and other payables | 0.0 |
Long-term debt | 400.0 |
Interest payable on long-term debt | 30.0 |
Total debt commitments | 797.0 |
4-5 years | New Afton |  |
DEBT COMMITMENTS |  |
Non-current financial liabilities | 313.0 |
4-5 years | Rainy River gold stream obligation |  |
DEBT COMMITMENTS |  |
Non-current financial liabilities | 54.0 |
After 5 years |  |
DEBT COMMITMENTS |  |
Trade and other payables | 0.0 |
Long-term debt | 0.0 |
Interest payable on long-term debt | 0.0 |
Total debt commitments | 209.0 |
After 5 years | New Afton |  |
DEBT COMMITMENTS |  |
Non-current financial liabilities | 157.0 |
After 5 years | Rainy River gold stream obligation |  |
DEBT COMMITMENTS |  |
Non-current financial liabilities | $ 52.0 |

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