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IMPAIRMENT OF NONFINANCIAL ASSETS (Details) | 12 Months Ended
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Mar. 31, 2018
Disclosure of reconciliation of changes in goodwill [line items] |
Growth rate used to extrapolate cash flow projections, period | 5 years
Bottom of range |
Disclosure of reconciliation of changes in goodwill [line items] |
Discount rate applied to cash flow projections | 6.50%
Top of range |
Disclosure of reconciliation of changes in goodwill [line items] |
Discount rate applied to cash flow projections | 9.00%
Civil Aviation Training Solutions, Defense and Security and Healthcare | Bottom of range |
Disclosure of reconciliation of changes in goodwill [line items] |
Growth rate used to extrapolate cash flow projections | 2.00%
Civil Aviation Training Solutions, Defense and Security and Healthcare | Top of range |
Disclosure of reconciliation of changes in goodwill [line items] |
Growth rate used to extrapolate cash flow projections | 3.00%

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