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Financial risks (Narrative) (Details) - CAD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Interest rate risk [Member] |  |
Disclosure of Financial Risks [Line Items] |  |
Sensitivity analysis, variance, percentage | 0.50% |
Foreign exchange risk [Member] |  |
Disclosure of Financial Risks [Line Items] |  |
Sensitivity analysis, variance, percentage | 5.00% |
Effect of variance on net earnings | $ 1.8 | $ 1.2
Other price risk [Member] |  |
Disclosure of Financial Risks [Line Items] |  |
Sensitivity analysis, variance, percentage | 10.00% |
Effect of variance on net earnings | $ 2.5 | 1.7
Effect of variance on other comprehensive income | 8.2 | 10.0
Credit risk [Member] |  |
Disclosure of Financial Risks [Line Items] |  |
Expected credit loss | $ 14.2 | $ 12.7

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Details
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