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SEGMENTED INFORMATION - Statement of Earnings (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Disclosure of operating segments [line items] |  |
Revenues | $ 1,633.0 | $ 987.1
Cost of sales |  | 647.0
Depreciation expense | 273.8 | 216.0
General and administrative | 48.9 | 50.8
Exploration | 21.7 | 26.3
Impairment | (455.5) | 0.0
Other | 9.2 | (47.3)
Earnings (loss) from operations | 944.0 | (0.3)
Net capital expenditures |  | 934.2
9.7% of Côté Gold pre-Commercial Production gold received by SMM | 18.4 | 0.0
9.7% of Côté Gold expenses funded by SMM | 6.6 | 0.0
Other income (expenses) | $ 9.2 | (47.3)
Côté Gold |  |
Disclosure of operating segments [line items] |  |
Proportion of voting rights held in joint venture | 70.00% |
Discontinued operations |  |
Disclosure of operating segments [line items] |  |
Revenues |  | 47.2
Cost of sales |  | 23.8
Depreciation expense |  | 0.0
General and administrative |  | 0.0
Exploration |  | 0.1
Impairment |  | 0.0
Other |  | (1.3)
Earnings (loss) from operations |  | 22.0
Net capital expenditures |  | 10.8
Other income (expenses) |  | (1.3)
Aggregate continuing and discontinued operations |  |
Disclosure of operating segments [line items] |  |
Revenues | $ 1,633.0 | 1,034.3
Cost of sales | 809.3 | 670.8
Depreciation expense | 273.8 | 216.0
General and administrative | 48.9 | 50.8
Exploration | 21.7 | 26.4
Impairment | (455.5) | 0.0
Other | 9.2 | (48.6)
Earnings (loss) from operations | 944.0 | 21.7
Net capital expenditures | 522.0 | 945.0
Other income (expenses) | 9.2 | (48.6)
Gold mines |  |
Disclosure of operating segments [line items] |  |
Revenues | 1,690.5 | 986.2
Cost of sales | 809.3 | 647.0
Depreciation expense | 272.7 | 214.9
General and administrative | 0.0 | 0.4
Exploration | 6.5 | 4.2
Impairment | (455.5) | 0.0
Other | 11.4 | (43.0)
Earnings (loss) from operations | 1,068.9 | 76.7
Net capital expenditures | $ 520.4 | 933.8
Revenue and expenses, percentage | 9.70% |
Other income (expenses) | $ 11.4 | (43.0)
Gold mines | Côté Gold |  |
Disclosure of operating segments [line items] |  |
Revenues | 284.3 | 0.0
Cost of sales | 115.0 | 0.0
Depreciation expense | 56.7 | 0.0
General and administrative | 0.0 | 0.4
Exploration | 6.5 | 4.2
Impairment | 0.0 | 0.0
Other | (0.5) | (1.0)
Earnings (loss) from operations | 105.6 | (5.6)
Net capital expenditures | $ 268.8 | 731.6
Capital expenditures, percentage | 70.00% |
Revenue and expenses, percentage | 60.30% |
Other income (expenses) | $ (0.5) | (1.0)
Gold mines | Essakane |  |
Disclosure of operating segments [line items] |  |
Revenues | 1,083.2 | 809.6
Cost of sales | 536.8 | 502.4
Depreciation expense | 162.3 | 183.6
General and administrative | 0.0 | 0.0
Exploration | 0.0 | 0.0
Impairment | 0.0 | 0.0
Other | 0.3 | (31.6)
Earnings (loss) from operations | 384.4 | 92.0
Net capital expenditures | 185.5 | 136.6
Other income (expenses) | 0.3 | (31.6)
Gold mines | Westwood complex |  |
Disclosure of operating segments [line items] |  |
Revenues | 323.0 | 176.6
Cost of sales | 157.5 | 144.6
Depreciation expense | 53.7 | 31.3
General and administrative | 0.0 | 0.0
Exploration | 0.0 | 0.0
Impairment | (455.5) | 0.0
Other | 11.6 | (10.4)
Earnings (loss) from operations | 578.9 | (9.7)
Net capital expenditures | 66.1 | 65.6
Other income (expenses) | 11.6 | (10.4)
Exploration and evaluation and development |  |
Disclosure of operating segments [line items] |  |
Revenues | 0.0 | 0.0
Cost of sales | 0.0 | 0.0
Depreciation expense | 0.0 | 0.0
General and administrative | 0.0 | 0.0
Exploration | 15.2 | 22.1
Impairment | 0.0 | 0.0
Other | (0.7) | (0.2)
Earnings (loss) from operations | (15.9) | (22.3)
Net capital expenditures | 0.0 | 0.0
Other income (expenses) | (0.7) | (0.2)
Corporate |  |
Disclosure of operating segments [line items] |  |
Revenues | (57.5) | 0.9
Cost of sales | 0.0 | 0.0
Depreciation expense | 1.1 | 1.1
General and administrative | 48.9 | 50.4
Exploration | 0.0 | 0.0
Impairment | 0.0 | 0.0
Other | (1.5) | (4.1)
Earnings (loss) from operations | (109.0) | (54.7)
Net capital expenditures | 1.6 | 0.4
Other income (expenses) | $ (1.5) | $ (4.1)

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