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OPERATING SEGMENTS AND GEOGRAPHIC INFORMATION - Capital Expenditures (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Disclosure of operating segments [line items] |  |
Payments to acquire productive assets | $ 221.2 | $ 274.0
Operating segments | Civil Aviation Training Solutions |  |
Disclosure of operating segments [line items] |  |
Payments to acquire productive assets | 162.0 | 145.3
Operating segments | Defense and Security |  |
Disclosure of operating segments [line items] |  |
Payments to acquire productive assets | 49.2 | 122.7
Operating segments | Healthcare |  |
Disclosure of operating segments [line items] |  |
Payments to acquire productive assets | $ 10.0 | $ 6.0

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