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Share Capital - Narrative (Details)
$ / shares in Units, shares in Millions
 12 Months Ended
Dec. 31, 2023
CAD ($)
class_series
$ / shares
shares
Aug. 29, 2023
shares
Disclosure of classes of share capital [line items]    
Aggregate liquidation entitlement amount | $ $ 200,000,000  
Number of shares authorised for purchase and cancellation (in shares) | shares   17.0
Common shares purchased for cancellation (in shares) | shares 2.8  
Purchase and cancellation of treasury shares (cad per share) | $ / shares $ 66.61  
Cancellation of treasury shares | $ $ 186,000,000  
Preferred shares    
Disclosure of classes of share capital [line items]    
Number of class series | class_series 14  
Number of class series outstanding | class_series 8