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Related-Party Disclosures - Schedule of Compensation of Key Management Personnel and Directors of the Company (Details) - CAD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Related Party [Abstract]    
Salaries and other short-term employment benefits $ 15.5 $ 13.9
Directors’ fees 0.7 0.7
Share-based compensation 36.8 9.0
Total compensation $ 53.0 $ 23.6