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FINANCIAL INSTRUMENTS AND RISK MANAGEMENT - Outstanding cash flow hedge positions (Details) - CAD ($) $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
US Dollars to Canadian Dollars | Derivative hedging instruments |  |
Disclosure of detailed information about financial instruments [line items] |  |
Nominal amount (in CAD) | $ 394,482 | $ 233,244
Assets |  | 1,024
Liabilities | 7,160 |
Changes in fair value used for calculating hedge ineffectiveness | 7,160 | 1,024
Changes in fair value used for calculating hedge ineffectiveness | 7,160 | 1,024
For continued hedges | 7,160 | 1,024
For discontinued hedges | 0 | 0
US Dollars to Canadian Dollars | Cross-currency interest rate swap |  |
Disclosure of detailed information about financial instruments [line items] |  |
Nominal amount (in CAD) | 251,790 | 237,038
Assets | 3,939 | 17,204
Changes in fair value used for calculating hedge ineffectiveness | (13,265) | 1,017
Changes in fair value used for calculating hedge ineffectiveness | (13,265) | 1,017
For continued hedges | 3,939 | 17,204
For discontinued hedges | 0 | 0
Euros to Canadian Dollars | Derivative hedging instruments |  |
Disclosure of detailed information about financial instruments [line items] |  |
Nominal amount (in CAD) | 159,280 | 98,103
Assets |  | 1,559
Liabilities | 4,888 |
Changes in fair value used for calculating hedge ineffectiveness | 4,888 | 1,559
Changes in fair value used for calculating hedge ineffectiveness | 4,888 | 1,559
For continued hedges | 4,888 | 1,559
For discontinued hedges | 0 | 0
US Dollars to Euros | Derivative hedging instruments |  |
Disclosure of detailed information about financial instruments [line items] |  |
Nominal amount (in CAD) | 8,734 | 18,648
Assets | 29 |
Liabilities |  | 204
Changes in fair value used for calculating hedge ineffectiveness | 29 | 204
Changes in fair value used for calculating hedge ineffectiveness | 29 | 204
For continued hedges | 29 | 204
For discontinued hedges | 0 | 0
Euros to US Dollars | Derivative hedging instruments |  |
Disclosure of detailed information about financial instruments [line items] |  |
Nominal amount (in CAD) | 20,590 | 10,763
Liabilities | 242 | 26
Changes in fair value used for calculating hedge ineffectiveness | 242 | 26
Changes in fair value used for calculating hedge ineffectiveness | 242 | 26
For continued hedges | 242 | 26
For discontinued hedges | 0 | 0
Canadian Dollars to Euros | Cross-currency interest rate swap |  |
Disclosure of detailed information about financial instruments [line items] |  |
Nominal amount (in CAD) | 257,284 | 235,477
Liabilities | 10,131 | 14,101
Changes in fair value used for calculating hedge ineffectiveness | 3,970 | (3,383)
Changes in fair value used for calculating hedge ineffectiveness | 3,970 | (3,383)
For continued hedges | 10,131 | 14,101
For discontinued hedges | 0 | 0
Variable Rate to Fixed Rate | Interest rate swap instrument |  |
Disclosure of detailed information about financial instruments [line items] |  |
Nominal amount (in CAD) | 300,000 | 406,350
Assets |  | 1,198
Liabilities | 6,534 |
Changes in fair value used for calculating hedge ineffectiveness | (7,732) | 732
Changes in fair value used for calculating hedge ineffectiveness | (7,732) | 732
For continued hedges | 6,534 | 1,198
For discontinued hedges | 0 | 0
Euros to Czech Koruna | Derivative hedging instruments |  |
Disclosure of detailed information about financial instruments [line items] |  |
Nominal amount (in CAD) | 622 | 2,740
Assets | 6 |
Liabilities |  | 63
Changes in fair value used for calculating hedge ineffectiveness | 6 | 63
Changes in fair value used for calculating hedge ineffectiveness | 6 | 63
For continued hedges | 6 | 63
For discontinued hedges | $ 0 | $ 0

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