v3.25.4
Acquisitions and Other Transactions - Financing Package with Discovery Silver Corp. on the Porcupine Complex- Ontario, Canada (Details)
$ / shares in Units, $ in Millions, $ in Millions
Sep. 18, 2025
USD ($)
shares
Sep. 18, 2025
CAD ($)
shares
Apr. 15, 2025
USD ($)
tranche
oz
shares
Apr. 15, 2025
CAD ($)
oz
$ / shares
shares
Feb. 03, 2025
USD ($)
item
Feb. 03, 2025
CAD ($)
item
$ / shares
Discovery Term Loan            
Acquisitions            
Percentage of net smelter return to be acquired     4.25% 4.25%    
Purchase price     $ 300.0      
Value of common shared issued in acquisition     48.6 $ 70.9    
Financing package committed     $ 448.6      
Number of tranches | tranche     2      
Discovery Term Loan | SOFR            
Acquisitions            
Notional amount     $ 100.0      
Discovery Silver Corp.            
Acquisitions            
No. of shares sold | shares 26,000,000 26,000,000        
Aggregate net proceeds $ 84.4 $ 116.5        
Realized gain 67.4 $ 93.1        
Fair value gain $ 67.4          
Discovery Silver Corp. on the Porcupine Complex Canada            
Acquisitions            
Number of subscription receipts acquired | item         78,833,333 78,833,333
Value of common shared issued in acquisition         $ 48.6 $ 70.9
Number of tranches | tranche     2      
Percentage of net smelter return on all minerals produced indefinitely     2.25% 2.25%    
Percentage of net smelter return based on threshold ounces or threshold internal rate of return     2.00% 2.00%    
Threshold gold ounces used in determining the percentage of net smelter return | oz     72,000 72,000    
Threshold internal rate of return on purchase price used in determining the percentage of net smelter return     12.00% 12.00%    
Threshold purchase price used to calculate the threshold internal rate of return for determining the percentage of     $ 100.0      
Total subscription offerings         $ 169.5 $ 247.5
Subscription receipt price | $ / shares           $ 0.9
Discovery Silver Corp. on the Porcupine Complex Canada | SOFR            
Acquisitions            
Notional amount     $ 100.0      
Loan receivable term     7 years      
Loan availability term     2 years      
Adjustment to interest rate basis     4.50% 4.50%    
Amortization beginning period     5 years      
Amortization percentage per quarter     5.00% 5.00%    
Upfront fee percentage on principal drawn     2.00% 2.00%    
Standby fee on undrawn funds     1.00% 1.00%    
Discovery Silver Corp. on the Porcupine Complex Canada | Discovery Term Loan            
Acquisitions            
Number of common share purchase warrants | shares     3,900,000 3,900,000    
Exercise price of warrants per common share | $ / shares       $ 0.95    
Discovery Silver Corp. on the Porcupine Complex Canada | Discovery Term Loan | SOFR            
Acquisitions            
Amortization beginning period     5 years