OPERATING SEGMENTS AND GEOGRAPHIC INFORMATION - Capital Expenditures (Details) - CAD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Disclosure of operating segments [line items] | ||
| Total capital expenditures | $ 361.5 | $ 444.1 |
| Operating segments | Civil Aviation | ||
| Disclosure of operating segments [line items] | ||
| Total capital expenditures | 223.7 | 296.3 |
| Operating segments | Defense and Security | ||
| Disclosure of operating segments [line items] | ||
| Total capital expenditures | $ 137.8 | $ 147.8 |