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Key Management Compensation (Tables)
12 Months Ended
Dec. 31, 2021
Related Party [Abstract]  
Schedule of Key Management our Directors and Senior Vice Presidents
(CAD$ in millions)20212020
Salaries, bonuses, director fees and other short-term benefits$21 $19 
Post-employment benefits1 
Share option compensation expense12 10 
Compensation expense related to Units48 
$82 $43