Financial Instruments Risk - Market Risk Narrative (Details) - CAD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2024 |
|
| Currency risk | ||
| Disclosure of nature and extent of risks arising from financial instruments [line items] | ||
| Warrant derivative liabilities | $ 0.4 | $ 0.4 |
| Reasonably possible change in risk variable percentage | 10.00% | |
| Change in risk variable, impact on net income (loss) | $ 15.7 | 1.9 |
| Change in risk variable, impact on comprehensive income (loss) | $ 1.9 | $ 6.7 |
| Interest rate risk | ||
| Disclosure of nature and extent of risks arising from financial instruments [line items] | ||
| Reasonably possible change in risk variable percentage | 1.00% | |
| Change in risk variable, impact on net income (loss) | $ 0.4 | |
| Change in risk variable, impact on comprehensive income (loss) | $ 0.4 | |