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NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) $ in Millions | 12 Months Ended
--- | ---
Mar. 31, 2021 CAD ($) business_segments | Mar. 31, 2020 CAD ($)
Disclosure of detailed information about property, plant and equipment [line items] |  |
Number of operating segments | business_segments | 3 |
Increase In royalty obligations, impact of 1% change in growth rate | $ | $ 2.3 | $ 2.8
Bottom of range |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Expected warranty claims period | 1 year |
Growth rate used to extrapolate cash flow projections | 2.00% |
Top of range |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Expected warranty claims period | 7 years |
Growth rate used to extrapolate cash flow projections | 3.00% |
Government royalties | Bottom of range |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Growth rate used to extrapolate cash flow projections | 3.00% |
Discount rate for government royalty payments | 6.00% |
Government royalties | Top of range |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Growth rate used to extrapolate cash flow projections | 9.00% |
Discount rate for government royalty payments | 12.00% |
Capitalized development costs |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Average remaining amortization period | 5 years 3 months 18 days | 5 years 2 months 12 days
Capitalized development costs | Bottom of range |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Useful lives, intangible assets other than goodwill | 3 years |
Capitalized development costs | Top of range |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Useful lives, intangible assets other than goodwill | 10 years |
Customer relationships | Bottom of range |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Useful lives, intangible assets other than goodwill | 3 years |
Customer relationships | Top of range |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Useful lives, intangible assets other than goodwill | 20 years |
Licenses | Bottom of range |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Useful lives, intangible assets other than goodwill | 3 years |
Licenses | Top of range |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Useful lives, intangible assets other than goodwill | 20 years |
ERP and other software | Bottom of range |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Useful lives, intangible assets other than goodwill | 3 years |
ERP and other software | Top of range |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Useful lives, intangible assets other than goodwill | 10 years |
Other intangible assets | Bottom of range |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Useful lives, intangible assets other than goodwill | 2 years |
Other intangible assets | Top of range |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Useful lives, intangible assets other than goodwill | 40 years |
Buildings and land |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Useful lives, right of use assets | 40 years |
Simulators |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Useful lives, right of use assets | 25 years |
Machinery and equipment |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Useful lives, right of use assets | 7 years |
Buildings and improvements | Bottom of range |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Amortization rate, property, plant and equipment | 2.50% |
Useful lives, property, plant and equipment | 3 years |
Buildings and improvements | Top of range |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Amortization rate, property, plant and equipment | 10.00% |
Useful lives, property, plant and equipment | 40 years |
Simulators |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Average remaining amortization period | 12 years 2 months 12 days | 12 years
Simulators | Top of range |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Useful lives, property, plant and equipment | 25 years |
Machinery and equipment | Bottom of range |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Amortization rate, property, plant and equipment | 20.00% |
Useful lives, property, plant and equipment | 2 years |
Machinery and equipment | Top of range |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Amortization rate, property, plant and equipment | 35.00% |
Useful lives, property, plant and equipment | 15 years |
Aircraft | Top of range |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Useful lives, property, plant and equipment | 25 years |
Aircraft engines | Top of range |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Utilization rate, property plant and equipment | 3500 hours |

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