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CAPITAL RISK MANAGEMENT (Details) - CAD ($) $ in Millions | Mar. 31, 2021 | Mar. 31, 2020 | Mar. 31, 2019
--- | --- | --- | ---
Capital Risk Management [Abstract] |  |  |
Long-term debt | $ 2,351.5 | $ 3,312.2 |
Less: cash and cash equivalents | (926.1) | (946.5) | $ (446.1)
Net debt | 1,425.4 | 2,365.7 |
Equity | 3,212.8 | 2,578.3 | $ 2,382.5
Total net debt plus equity | $ 4,638.2 | $ 4,944.0 |

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- Definition Capital Risk Management [Abstract] + References No definition available. + Details
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