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Financial risk management - Exposure to currency risk (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | ---
EXPOSURE TO CURRENCY RISK |  |  |
Cash and cash equivalents | $ 185.5 | $ 200.8 | $ 481.5
Deferred tax assets | 4.9 | 0.0 |
Deferred tax liability | (74.8) | (66.8) |
Reclamation and closure cost obligations | (124.2) | (121.2) | $ (160.2)
Canadian dollar | Currency risk |  |  |
EXPOSURE TO CURRENCY RISK |  |  |
Cash and cash equivalents | 15.5 | 33.9 |
Trade and other receivables | 6.3 | 10.4 |
Investments | 7.1 | 35.6 |
Income tax receivable (payable) | 0.4 | (0.4) |
Deferred tax assets | 4.9 |  |
Trade and other payables | (126.2) | (128.6) |
Deferred tax liability | (74.8) | (66.8) |
Reclamation and closure cost obligations | (123.4) | (119.5) |
Share units | (9.9) | (1.8) |
Total exposure to currency risk | $ (300.1) | (237.2) |
Mexican peso | Currency risk |  |  |
EXPOSURE TO CURRENCY RISK |  |  |
Cash and cash equivalents |  | 0.0 |
Trade and other receivables |  | 0.4 |
Investments |  | 0.0 |
Income tax receivable (payable) |  | 0.0 |
Trade and other payables |  | (1.3) |
Deferred tax liability |  | 0.0 |
Reclamation and closure cost obligations |  | 0.0 |
Share units |  | 0.0 |
Total exposure to currency risk |  | $ (0.9) |

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