XML 102 R62.htm IDEA: XBRL DOCUMENT v3.25.1
Mineral Property, Plant and Equipment (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment $ 3,360.1  
Reversal of impairment (Note 9) (57.1) $ 0.0
Mineral property, plant and equipment 4,618.0 3,360.1
Cost    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment 5,468.5 5,110.2
Additions 420.4 367.9
Transfer of La Yaqui Grande Assets   20.0
Revisions 0.0 0.0
Disposals (23.9) (38.2)
Mineral property, plant and equipment 6,879.2 5,468.5
Cost | Lake Lynn Assets    
Reconciliation of changes in property, plant and equipment [abstract]    
Revisions 0.0  
Accumulated amortization and impairment    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment (2,108.4) (1,936.4)
Amortization (222.2) (207.6)
Disposals 13.3 35.6
Reversal of impairment (Note 9) (56.1)  
Mineral property, plant and equipment (2,261.2) (2,108.4)
Right of Use Assets    
Reconciliation of changes in property, plant and equipment [abstract]    
Revisions 2.6 8.6
Plant and equipment(v)    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment 928.2  
Mineral property, plant and equipment 1,629.5 928.2
Plant and equipment(v) | Cost    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment 1,808.4 1,788.4
Additions 83.2 51.5
Transfer of La Yaqui Grande Assets   0.0
Revisions 39.1 4.0
Disposals (23.9) (35.5)
Mineral property, plant and equipment 2,597.5 1,808.4
Plant and equipment(v) | Cost | Lake Lynn Assets    
Reconciliation of changes in property, plant and equipment [abstract]    
Revisions 0.0  
Plant and equipment(v) | Accumulated amortization and impairment    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment (880.2) (807.9)
Amortization (122.9) (106.6)
Disposals 13.3 34.3
Reversal of impairment (Note 9) (21.8)  
Mineral property, plant and equipment (968.0) (880.2)
Plant and equipment(v) | Right of Use Assets    
Reconciliation of changes in property, plant and equipment [abstract]    
Revisions 7.5 0.0
Mineral Property    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment 2,214.2  
Mineral property, plant and equipment 2,892.0 2,214.2
Mineral Property | Cost    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment 3,357.5 3,070.0
Additions 303.8 284.2
Transfer of La Yaqui Grande Assets   0.0
Revisions (39.1) (4.0)
Disposals 0.0 (1.3)
Mineral property, plant and equipment 4,100.3 3,357.5
Mineral Property | Cost | Lake Lynn Assets    
Reconciliation of changes in property, plant and equipment [abstract]    
Revisions 175.7  
Mineral Property | Accumulated amortization and impairment    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment (1,143.3) (1,043.6)
Amortization (99.3) (101.0)
Disposals 0.0 1.3
Reversal of impairment (Note 9) (34.3)  
Mineral property, plant and equipment (1,208.3) (1,143.3)
Mineral Property | Right of Use Assets    
Reconciliation of changes in property, plant and equipment [abstract]    
Revisions (4.9) 8.6
Exploration and evaluation    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment 217.7  
Mineral property, plant and equipment 96.5 217.7
Exploration and evaluation | Cost    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment 302.6 251.8
Additions 33.4 32.2
Transfer of La Yaqui Grande Assets   20.0
Revisions 0.0 0.0
Disposals 0.0 (1.4)
Mineral property, plant and equipment 181.4 302.6
Exploration and evaluation | Cost | Lake Lynn Assets    
Reconciliation of changes in property, plant and equipment [abstract]    
Revisions (175.7)  
Exploration and evaluation | Accumulated amortization and impairment    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment (84.9) (84.9)
Amortization 0.0 0.0
Disposals 0.0 0.0
Reversal of impairment (Note 9) 0.0  
Mineral property, plant and equipment (84.9) (84.9)
Exploration and evaluation | Right of Use Assets    
Reconciliation of changes in property, plant and equipment [abstract]    
Revisions 0.0 0.0
Mineral Property, Plant and Equipment    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment 3,360.1  
Mineral property, plant and equipment 4,618.0 $ 3,360.1
Manitou Gold Inc. | Cost    
Reconciliation of changes in property, plant and equipment [abstract]    
Additions 21.1  
Manitou Gold Inc. | Plant and equipment(v) | Cost    
Reconciliation of changes in property, plant and equipment [abstract]    
Additions 0.0  
Manitou Gold Inc. | Mineral Property | Cost    
Reconciliation of changes in property, plant and equipment [abstract]    
Additions 0.0  
Manitou Gold Inc. | Exploration and evaluation | Cost    
Reconciliation of changes in property, plant and equipment [abstract]    
Additions 21.1  
Argonaut Transaction    
Reconciliation of changes in property, plant and equipment [abstract]    
Mineral property, plant and equipment 683.2  
Argonaut Transaction | Cost    
Reconciliation of changes in property, plant and equipment [abstract]    
Additions 990.5  
Argonaut Transaction | Exploration and evaluation | Cost    
Reconciliation of changes in property, plant and equipment [abstract]    
Additions 0.0  
Argonaut Transaction | Mineral Property, Plant and Equipment    
Reconciliation of changes in property, plant and equipment [abstract]    
Mineral property, plant and equipment $ 307.3