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Segmented information - Schedule of segment information (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
OPERATING SEGMENT RESULTS |  |
Gold revenues | $ 612,700,000 | $ 482,100,000
Copper revenues | 160,300,000 | 111,800,000
Silver revenues | 13,500,000 | 10,500,000
Total revenues | 786,500,000 | 604,400,000
Operating expenses | 450,400,000 | 382,700,000
Depreciation and depletion | 234,200,000 | 195,400,000
Revenue less cost of goods sold | 101,900,000 | 26,300,000
Corporate administration | 24,500,000 | 21,300,000
Corporate restructuring | 0 | 2,100,000
Share-based payment expenses | 5,400,000 | 2,600,000
Exploration and business development | 10,200,000 | 16,000,000.0
Income (loss) from operations | 61,800,000 | (15,700,000)
Intersegment amounts |  |
OPERATING SEGMENT RESULTS |  |
Total revenues | 0 | 0
Corporate |  |
OPERATING SEGMENT RESULTS |  |
Gold revenues | 0 | 0
Copper revenues | 0 | 0
Silver revenues | 0 | 0
Total revenues | 0 | 0
Operating expenses | 0 | 0
Depreciation and depletion | 0 | 0
Revenue less cost of goods sold | 0 | 0
Corporate administration | 24,500,000 | 21,300,000
Corporate restructuring |  | 2,100,000
Share-based payment expenses | 5,400,000 | 2,600,000
Exploration and business development | 800,000 | 500,000
Income (loss) from operations | (30,700,000) | (26,500,000)
Rainy River | Operating segments |  |
OPERATING SEGMENT RESULTS |  |
Gold revenues | 494,300,000 | 413,100,000
Copper revenues | 0 | 0
Silver revenues | 11,100,000 | 8,600,000
Total revenues | 505,400,000 | 421,700,000
Operating expenses | 284,700,000 | 230,400,000
Depreciation and depletion | 166,900,000 | 148,100,000
Revenue less cost of goods sold | 53,800,000 | 43,200,000
Corporate administration | 0 | 0
Corporate restructuring |  | 0
Share-based payment expenses | 0 | 0
Exploration and business development | 200,000 | 2,700,000
Income (loss) from operations | 53,600,000 | 40,500,000
New Afton | Operating segments |  |
OPERATING SEGMENT RESULTS |  |
Gold revenues | 118,400,000 | 69,000,000.0
Copper revenues | 160,300,000 | 111,800,000
Silver revenues | 2,400,000 | 1,900,000
Total revenues | 281,100,000 | 182,700,000
Operating expenses | 165,700,000 | 152,300,000
Depreciation and depletion | 67,300,000 | 47,300,000
Revenue less cost of goods sold | 48,100,000 | (16,900,000)
Corporate administration | 0 | 0
Corporate restructuring |  | 0
Share-based payment expenses | 0 | 0
Exploration and business development | 9,200,000 | 12,800,000
Income (loss) from operations | $ 38,900,000 | $ (29,700,000)

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