Segmented information (Geographical segment) (Details) - CAD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Disclosure of geographical areas [line items] | ||
| Revenue | $ 3,481,933 | $ 3,135,772 |
| Non-current assets | 6,348,365 | 6,544,793 |
| Canada [member] | ||
| Disclosure of geographical areas [line items] | ||
| Revenue | 3,034,652 | 2,495,748 |
| Non-current assets | 2,884,969 | 2,859,401 |
| Australia [Member] | ||
| Disclosure of geographical areas [line items] | ||
| Non-current assets | 394,276 | 383,338 |
| United States [Member] | ||
| Disclosure of geographical areas [line items] | ||
| Revenue | 424,123 | 640,024 |
| Non-current assets | 2,753,805 | 3,015,292 |
| Kazakhstan [Member] | ||
| Disclosure of geographical areas [line items] | ||
| Non-current assets | 315,314 | 286,759 |
| Germany [Member] | ||
| Disclosure of geographical areas [line items] | ||
| Non-current assets | 1 | 3 |
| Switzerland [Member] | ||
| Disclosure of geographical areas [line items] | ||
| Revenue | $ 23,158 | $ 0 |