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Financial risk management - Liquidity risk (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
DEBT COMMITMENTS |  |
Trade and other payables | $ 170.9 | $ 172.9
Long-term debt | 394.9 | 491.0
Interest payable on long-term debt | 150.0 | 202.4
Total debt commitments | 1,503.0 | 1,658.8
New Afton |  |
DEBT COMMITMENTS |  |
Non-current financial liabilities | 598.6 | 625.3
Gold stream obligation |  |
DEBT COMMITMENTS |  |
Non-current financial liabilities | 225.7 | 203.4
Accounts Payable excluding current portion of Gold Stream Obligation |  |
DEBT COMMITMENTS |  |
Trade and other payables | 128.7 | 127.7
Principle of Long Term Debt |  |
DEBT COMMITMENTS |  |
Long-term debt | 400.0 | $ 500.0
Less than 1 year |  |
DEBT COMMITMENTS |  |
Trade and other payables | 128.7 |
Long-term debt | 0.0 |
Interest payable on long-term debt | 30.0 |
Total debt commitments | 188.1 |
Less than 1 year | New Afton |  |
DEBT COMMITMENTS |  |
Non-current financial liabilities | 0.0 |
Less than 1 year | Gold stream obligation |  |
DEBT COMMITMENTS |  |
Non-current financial liabilities | 29.4 |
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 | 189.9 |
Between 1 and 3 years | New Afton |  |
DEBT COMMITMENTS |  |
Non-current financial liabilities | 60.2 |
Between 1 and 3 years | Gold stream obligation |  |
DEBT COMMITMENTS |  |
Non-current financial liabilities | 69.7 |
4-5 years |  |
DEBT COMMITMENTS |  |
Trade and other payables | 0.0 |
Long-term debt | 400.0 |
Interest payable on long-term debt | 60.0 |
Total debt commitments | 787.5 |
4-5 years | New Afton |  |
DEBT COMMITMENTS |  |
Non-current financial liabilities | 266.9 |
4-5 years | Gold stream obligation |  |
DEBT COMMITMENTS |  |
Non-current financial liabilities | 60.6 |
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 | 337.5 |
After 5 years | New Afton |  |
DEBT COMMITMENTS |  |
Non-current financial liabilities | 271.5 |
After 5 years | Gold stream obligation |  |
DEBT COMMITMENTS |  |
Non-current financial liabilities | $ 66.0 |

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