v3.26.1
Inventories (Schedule of Inventories) (Details) - CAD ($)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Disclosure Of Operating Segments [Line Items]    
Total inventory $ 843,989,000 $ 826,863,000
Cost of sales 2,100,230,000 2,049,675,000
Uranium [Member]    
Disclosure Of Operating Segments [Line Items]    
Concentrate 601,911,000 651,901,000
Broken ore 58,341,000 27,892,000
Total inventory 660,252,000 679,793,000
Fuel Services [Member]    
Disclosure Of Operating Segments [Line Items]    
Total inventory 181,379,000 145,241,000
Other Segment [Member]    
Disclosure Of Operating Segments [Line Items]    
Total inventory $ 2,358,000 $ 1,829,000