v3.26.1
Consolidated Statements of Comprehensive Income (Loss) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Profit or loss [abstract]    
OPERATING REVENUES $ 1,808.8 $ 1,346.9
COST OF SALES    
Mining and processing 572.8 518.9
Royalties 27.0 13.8
Amortization 209.7 218.4
Cost of sales 809.5 751.1
EXPENSES    
Exploration 26.3 26.7
Corporate and administrative 39.3 32.6
Share-based compensation (Note 19) 55.0 31.7
Reversal of impairment (Note 10) (218.8) (57.1)
Total expenses 711.3 785.0
EARNINGS FROM OPERATIONS 1,097.5 561.9
Gain on sale of assets (Note 7) 231.0 0.0
Loss on commodity derivatives (Note 13) (230.5) (24.2)
Finance income (expense) (Note 20) 6.4 (3.8)
Foreign exchange (loss) gain (5.1) 8.0
Other loss (Note 21) (9.6) (39.7)
EARNINGS BEFORE INCOME TAXES 1,089.7 502.2
INCOME TAXES (Note 18)    
Current income tax expense (120.5) (98.7)
Deferred income tax expense (83.4) (119.2)
NET EARNINGS 885.8 284.3
Items that may be subsequently reclassified to net earnings:    
Net change in fair value of currency hedging instruments, net of taxes 8.2 (11.7)
Net change in fair value of fuel hedging instruments, net of taxes 0.0 (0.1)
Items that will not be reclassified to net earnings:    
Unrealized gain on equity securities, net of taxes 34.9 26.4
Total other comprehensive income 43.1 14.6
COMPREHENSIVE INCOME $ 928.9 $ 298.9
EARNINGS PER SHARE (Note 22)    
- basic (usd per share) $ 2.11 $ 0.70
- diluted (usd per share) $ 2.10 $ 0.69