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OPERATING SEGMENTS AND GEOGRAPHIC INFORMATION - Products and Services Information (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Disclosure of operating segments [line items] |  |
Revenue | $ 2,981.9 | $ 3,623.2
Products |  |
Disclosure of operating segments [line items] |  |
Revenue | 1,359.7 | 1,537.0
Training and services |  |
Disclosure of operating segments [line items] |  |
Revenue | $ 1,622.2 | $ 2,086.2

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