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Reclamation and closure cost obligations (Tables) | 12 Months Ended
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Dec. 31, 2022
RECLAMATION AND CLOSURE COST OBLIGATIONS [Abstract] |
Schedule of reclamation and closure cost obligations | Changes to the reclamation and closure cost obligations are as follows:
(in millions of U.S. dollars) | Rainy River | New Afton | Cerro San Pedro | Total
CHANGES TO RECLAMATION AND CLOSURE COST OBLIGATIONS
Balance – December 31, 2020 | 81.4 |  | 34.2 |  | 3.6 |  | 119.2 |
Reclamation expenditures | (3.6) |  | — |  | (6.2) |  | (9.8) |
Unwinding of discount | 1.6 |  | 0.6 |  | — |  | 2.2 |
Revisions to expected cash flows | 30.0 |  | 14.2 |  | 4.2 |  | 48.4 |
Foreign exchange movement | — |  | 0.3 |  | (0.1) |  | 0.2 |
Balance – December 31, 2021 | 109.4 |  | 49.3 |  | 1.5 |  | 160.2 |
Less: current portion of closure costs (Note 7) | (4.2) |  | — |  | (1.4) |  | (5.6) |
Non-current portion of closure costs | 105.2 |  | 49.3 |  | 0.1 |  | 154.6 |
Balance – December 31, 2021 | 109.4 |  | 49.3 |  | 1.5 |  | 160.2 |
Reclamation expenditures | (1.7) |  | — |  | (2.3) |  | (4.0) |
Unwinding of discount | 2.3 |  | 0.9 |  | — |  | 3.2 |
Revisions to expected cash flows | (16.6) |  | (15.6) |  | 2.1 |  | (30.1) |
Foreign exchange movement | (5.8) |  | (2.3) |  | — |  | (8.1) |
Balance – December 31, 2022 | 87.6 |  | 32.3 |  | 1.3 |  | 121.2 |
Less: current portion of closure costs (Note 7) | (0.4) |  | — |  | (1.3) |  | (1.7) |
Non-current portion of closure costs | 87.2 |  | 32.3 |  | — |  | 119.5 |

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