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Capital management (Capital management) (Details) - CAD ($) | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
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Disclosure of objectives policies and processes for managing capital abstract |  |  |
Long-term debt | $ 997,000,000 | $ 996,250,000 |
Cash and cash equivalents | (1,143,674,000) | (1,247,447,000) | $ (918,382,000)
Short-term investments | (1,138,174,000) | (84,906,000) |
Net debt | (1,284,848,000) | (336,103,000) |
Non-controlling interest | 11,000 | 127,000 |
Shareholders' equity | 5,836,054,000 | 4,845,841,000 |
Total equity | 5,836,065,000 | 4,845,968,000 | $ 4,958,561,000
Total capital | $ 4,551,217,000 | $ 4,509,865,000 |

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