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SHARE BASED COMPENSATION (Details) - CAD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
SHARE BASED COMPENSATION |  |
Equity-settled plans | $ 50 | $ 46
Cash-settled plans | 274 | 181
Total share-based compensation expense | $ 324 | $ 227

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