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SEGMENTED INFORMATION - Statement of Earnings (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Disclosure of operating segments [line items] |  |
Revenues | $ 1,151.7 | $ 1,241.7
Cost of sales | 809.2 | 734.7
Depreciation expense | 339.8 | 256.7
General and administrative | 42.0 | 46.8
Exploration | 38.1 | 27.9
Impairment (Reversal) | 205.1 | (45.8)
Other | 92.0 | 76.0
Earnings (loss) from operations | (374.5) | 145.4
Net capital expenditures | 625.7 | 292.7
Gold mines |  |
Disclosure of operating segments [line items] |  |
Revenues | 1,151.7 | 1,241.7
Cost of sales | 809.2 | 734.7
Depreciation expense | 338.5 | 255.0
General and administrative | 0.0 | 0.0
Exploration | 4.2 | 3.4
Impairment (Reversal) | 190.1 | (45.8)
Other | 86.9 | 72.5
Earnings (loss) from operations | (277.2) | 221.9
Net capital expenditures | 248.5 | 202.7
Gold mines | Burkina Faso |  |
Disclosure of operating segments [line items] |  |
Revenues | 813.9 | 715.0
Cost of sales | 472.1 | 408.0
Depreciation expense | 251.6 | 166.7
General and administrative | 0.0 | 0.0
Exploration | 1.2 | 0.0
Impairment (Reversal) | 0.0 | (45.8)
Other | 5.6 | 14.8
Earnings (loss) from operations | 83.4 | 171.3
Net capital expenditures | 135.6 | 113.7
Gold mines | Suriname |  |
Disclosure of operating segments [line items] |  |
Revenues | 276.2 | 380.5
Cost of sales | 260.1 | 231.1
Depreciation expense | 75.6 | 70.8
General and administrative | 0.0 | 0.0
Exploration | 3.0 | 3.4
Impairment (Reversal) | 190.1 | 0.0
Other | 14.1 | 28.7
Earnings (loss) from operations | (266.7) | 46.5
Net capital expenditures | 98.6 | 67.8
Gold mines | Canada |  |
Disclosure of operating segments [line items] |  |
Revenues | 61.6 | 146.2
Cost of sales | 77.0 | 95.6
Depreciation expense | 11.3 | 17.5
General and administrative | 0.0 | 0.0
Exploration | 0.0 | 0.0
Impairment (Reversal) | 0.0 | 0.0
Other | 67.2 | 29.0
Earnings (loss) from operations | (93.9) | 4.1
Net capital expenditures | 14.3 | 21.2
Côté Gold Project |  |
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 | 0.9 | 0.0
Exploration | 2.9 | 2.7
Impairment (Reversal) | 0.0 | 0.0
Other | 0.0 | 0.0
Earnings (loss) from operations | (3.8) | (2.7)
Net capital expenditures | 343.0 | 73.1
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 | 0.3 | 0.0
Exploration | 31.0 | 21.8
Impairment (Reversal) | 0.0 | 0.0
Other | 0.4 | 0.7
Earnings (loss) from operations | (31.7) | (22.5)
Net capital expenditures | 33.6 | 16.1
Corporate |  |
Disclosure of operating segments [line items] |  |
Revenues | 0.0 | 0.0
Cost of sales | 0.0 | 0.0
Depreciation expense | 1.3 | 1.7
General and administrative | 40.8 | 46.8
Exploration | 0.0 | 0.0
Impairment (Reversal) | 15.0 | 0.0
Other | 4.7 | 2.8
Earnings (loss) from operations | (61.8) | (51.3)
Net capital expenditures | $ 0.6 | $ 0.8

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