FINANCIAL RISK MANAGEMENT - Letters Of Credit And Guarantees (Details) - CAD ($) $ in Millions |
Mar. 31, 2026 |
Mar. 31, 2025 |
|---|---|---|
| Disclosure of notes and other explanatory information [Abstract] | ||
| Advance payments | $ 222.0 | $ 207.2 |
| Contract performance | 100.2 | 110.7 |
| Lease obligations | 9.4 | 17.3 |
| Financial obligations | 88.8 | 69.5 |
| Other | 0.0 | 1.5 |
| Letters of credit and guarantees, net | $ 420.4 | $ 406.2 |