v3.25.0.1
Consolidated Statements of Comprehensive Income (Loss) - USD ($)
shares in Thousands, $ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Profit or loss [abstract]    
OPERATING REVENUES $ 1,346.9 $ 1,023.3
COST OF SALES    
Mining and processing 518.9 437.3
Royalties 13.8 10.2
Amortization 218.4 190.2
Cost of sales 751.1 637.7
EXPENSES    
Exploration 26.7 18.2
Corporate and administrative 32.6 27.6
Share-based compensation (Note 18) 31.7 21.7
Reversal of impairment (Note 9) (57.1) 0.0
Total expenses 785.0 705.2
EARNINGS FROM OPERATIONS 561.9 318.1
Finance expense (Note 19) (3.8) (2.5)
Foreign exchange gain 8.0 1.9
Unrealized loss on commodity derivatives (24.2) (0.9)
Other loss (Note 20) (39.7) (22.9)
EARNINGS BEFORE INCOME TAXES 502.2 293.7
INCOME TAXES (Note 17)    
Current income tax expense (98.7) (52.7)
Deferred income tax expense (119.2) (31.0)
NET EARNINGS 284.3 210.0
Items that may be subsequently reclassified to net earnings:    
Net change in fair value of currency hedging instruments, net of taxes (11.7) 8.3
Net change in fair value of fuel hedging instruments, net of taxes (0.1) (0.2)
Items that will not be reclassified to net earnings:    
Unrealized gain (loss) on equity securities, net of taxes 26.4 (10.5)
Total other comprehensive gain (loss) 14.6 (2.4)
COMPREHENSIVE INCOME $ 298.9 $ 207.6
EARNINGS PER SHARE (Note 21)    
- basic (usd per share) $ 0.70 $ 0.53
- diluted (usd per share) $ 0.69 $ 0.53
Weighted average number of common shares outstanding (000's)    
- basic (in shares) 408,165 395,509
- diluted (in shares) 410,546 398,069