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Income Taxes - Schedule of Loss Carryforwards and Deductible Temporary Differences (Details) - CAD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Non-capital tax losses    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Non-capital and capital tax losses $ 38.4 $ 49.1
Non-capital tax losses | Expire (2025 to 2044)    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Non-capital and capital tax losses 7.2 7.2
Non-capital tax losses | Never expire    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Non-capital and capital tax losses 31.2 41.9
Capital tax losses | Never expire    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Non-capital and capital tax losses 7.6 7.7
Non-capital and capital tax losses    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Non-capital and capital tax losses $ 46.0 $ 56.8