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Share-Based Compensation - Summary of Share Units (Deferred share units) (Parenthetical) (Details) - Deferred Share Units [Member] - CAD ($)
$ in Millions
Mar. 31, 2022
Dec. 31, 2021
Mar. 31, 2021
Dec. 31, 2020
Disclosure of terms and conditions of share-based payment arrangement [line items]        
Liabilities from share based transaction $ 0.6   $ 0.7  
Other Long Term Liabilities [Member]        
Disclosure of terms and conditions of share-based payment arrangement [line items]        
Liabilities from share based transaction   $ 10.8   $ 7.5