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SHARE BASED COMPENSATION - Liability Recognized For Share-Based Compensation - (Details) - CAD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
SHARE BASED COMPENSATION    
Current Liability $ 153 $ 117
Long-Term Liability (note 21) 291 143
Total Liability 444 260
Intrinsic value of vested awards $ 200 $ 149