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Expenses (Tables) | 12 Months Ended
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Dec. 31, 2022
EXPENSES [Abstract] |
Schedule of expenses by nature | (a) Operating expenses by nature
|  | Year ended December 31
(in millions of U.S. dollars) |  |  | 2022 | 2021
OPERATING EXPENSES BY NATURE |  |  |  |
Raw materials and consumables |  |  | 182.8 |  | 160.8 |
Salaries and employee benefits |  |  | 141.4 |  | 139.7 |
Contractors |  |  | 79.7 |  | 74.7 |
Repairs and maintenance |  |  | 51.8 |  | 47.7 |
General and administrative |  |  | 34.7 |  | 24.9 |
Leases |  |  | 4.2 |  | 2.6 |
Royalties |  |  | 8.7 |  | 7.4 |
Drilling and analytical |  |  | 6.5 |  | 9.3 |
Other |  |  | 20.1 |  | 11.8 |
Total production expenses |  |  | 529.9 |  | 478.9 |
Less: Production expenses capitalized |  |  | (147.7) |  | (98.6) |
Add (less): Change in inventories |  |  | 0.5 |  | (3.0) |
Total operating expenses |  |  | 382.7 |  | 377.3 |
Schedule of finance costs and income | (b) Finance costs and income
|  | Year ended December 31
(in millions of U.S. dollars) |  |  | 2022 | 2021
FINANCE COSTS |  |  |  |
Interest on senior unsecured notes |  |  | 32.4 |  | 36.3 |
Accretion |  |  | 4.5 |  | 3.9 |
Loss on repayment of long-term debt (Note 10) |  |  | 4.3 |  | — |
Other finance costs |  |  | 5.7 |  | 6.5 |
Total finance costs |  |  | 46.9 |  | 46.7 |
Less: amounts included in cost of qualifying assets |  |  | (19.1) |  | (11.9) |
Total finance costs |  |  | 27.8 |  | 34.8 |
FINANCE INCOME |  |  |  |
Interest income |  |  | 3.8 |  | 0.3 |
Schedule of other (losses) and gains | (c) Other gains and (losses)
|  | Year ended December 31
(in millions of U.S. dollars) |  |  | 2022 | 2021
OTHER GAINS AND (LOSSES) |  |  |  |
Gain on foreign exchange |  |  | 6.5 |  | 1.4 |
Loss on disposal of assets |  |  | (2.0) |  | (2.0) |
Loss on revaluation of investments |  |  | (28.0) |  | (21.3) |
Unrealized gain (loss) on revaluation of non-current derivative financial liabilities |  |  | 3.0 |  | (62.9) |
Loss on revaluation of copper price option contracts |  |  | — |  | (1.5) |
(Loss) gain on foreign exchange derivative |  |  | (2.3) |  | 1.5 |
Gain on fuel hedge swap contracts |  |  | 0.3 |  | — |
Gain on disposal of Blackwater stream(1) |  |  | — |  | 147.3 |
Revaluation of CSP's reclamation and closure cost obligation |  |  | (2.1) |  | (4.2) |
Flow through share premium(2) |  |  | — |  | 1.7 |
Other |  |  | (1.1) |  | (2.5) |
Total other (losses) gains |  |  | (25.7) |  | 57.5 |
1.In 2021, the Company disposed of the Blackwater gold stream for $300.0 million resulting in a net gain of $147.3 million. 2.Flow through share premium recognized in income when the Company renounced the related tax benefits of the 2020 flow through share issuance.

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