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Share Capital - Narrative (Details)
 12 Months Ended
Dec. 31, 2020
CAD ($)
class_series
Disclosure of classes of share capital [line items]  
Aggregate liquidation entitlement amount | $ $ 200,000,000
Preferred shares  
Disclosure of classes of share capital [line items]  
Number of class series 13
Number of class series outstanding 10