v3.26.1
Goodwill (Narrative) (Details) - British Columbia [Member] - Cash-generating units [Member]
$ in Millions
12 Months Ended
Dec. 31, 2025
USD ($)
$ / lbs
Dec. 31, 2024
$ / lbs
Disclosure of reconciliation of changes in goodwill [line items]    
Discount rate applied to cash flow projections 7.00% 7.25%
Long-term copper price per pound applied to cash flow projections | $ / lbs 4.25 4.15
Estimated value of mineral resources not included in LOM plan | $ $ 366.5