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FINANCIAL INSTRUMENTS AND RISK MANAGEMENT - Fair value measurements (Details) - CAD ($) $ in Thousands | Mar. 31, 2025 | Mar. 31, 2024
--- | --- | ---
Derivatives |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | $ (6,823) | $ 600
Financial assets, at fair value | (6,823) | 600
Derivatives | Carrying value |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | (6,823) | 600
Derivatives | Cash flow hedges |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | (12,255) |
Financial assets, at fair value | (12,255) |
Derivatives | Cash flow hedges | Carrying value |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | (12,255) |
Derivatives | Hedges of net investment in foreign operations | Cross-currency interest rate swap instrument |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | (6,192) | 3,103
Financial assets, at fair value | (6,192) | 3,103
Derivatives | Hedges of net investment in foreign operations | Cross-currency interest rate swap instrument | Carrying value |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | (6,192) | 3,103
Derivatives | Hedges of net investment in foreign operations | Interest rate swap instrument |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | (6,534) | 1,198
Financial assets, at fair value | (6,534) | 1,198
Derivatives | Hedges of net investment in foreign operations | Interest rate swap instrument | Carrying value |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | (6,534) | 1,198
Derivatives | Cash flow hedges |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities |  | 2,290
Financial liabilities, at fair value |  | 2,290
Derivatives | Cash flow hedges | Carrying value |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities |  | 2,290
Long-term debt |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | (1,543,678) | (1,171,972)
Financial liabilities, at fair value | (1,505,614) | (1,130,183)
Long-term debt | Carrying value |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | (1,543,678) | (1,171,972)
Level 1 | Derivatives |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, at fair value | 0 | 0
Level 1 | Derivatives | Cash flow hedges |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, at fair value | 0 |
Level 1 | Derivatives | Hedges of net investment in foreign operations | Cross-currency interest rate swap instrument |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, at fair value | 0 | 0
Level 1 | Derivatives | Hedges of net investment in foreign operations | Interest rate swap instrument |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, at fair value | 0 | 0
Level 1 | Derivatives | Cash flow hedges |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities, at fair value |  | 0
Level 1 | Long-term debt |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities, at fair value | 0 | 0
Level 2 | Derivatives |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, at fair value | (6,823) | 600
Level 2 | Derivatives | Cash flow hedges |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, at fair value | (12,255) |
Level 2 | Derivatives | Hedges of net investment in foreign operations | Cross-currency interest rate swap instrument |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, at fair value | (6,192) | 3,103
Level 2 | Derivatives | Hedges of net investment in foreign operations | Interest rate swap instrument |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, at fair value | (6,534) | 1,198
Level 2 | Derivatives | Cash flow hedges |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities, at fair value |  | 2,290
Level 2 | Long-term debt |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities, at fair value | (1,505,614) | (1,130,183)
Level 3 | Derivatives |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, at fair value | 0 | 0
Level 3 | Derivatives | Cash flow hedges |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, at fair value | 0 |
Level 3 | Derivatives | Hedges of net investment in foreign operations | Cross-currency interest rate swap instrument |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, at fair value | 0 | 0
Level 3 | Derivatives | Hedges of net investment in foreign operations | Interest rate swap instrument |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, at fair value | 0 | 0
Level 3 | Derivatives | Cash flow hedges |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities, at fair value |  | 0
Level 3 | Long-term debt |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities, at fair value | $ 0 | $ 0

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- Definition The amount of assets that are: (a) cash; (b) an equity instrument of another entity; (c) a contractual right: (i) to receive cash or another financial asset from another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially favourable to the entity; or (d) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to receive a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose the entity’s own equity instruments do not include puttable financial instruments classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. [Refer: Classes of financial instruments [domain]; Financial liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 25 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_25&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 35H -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35H&doctype=Standard -URIDate 2024-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 35M -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35M&doctype=Standard -URIDate 2024-03-27 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 35N -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35N&doctype=Standard -URIDate 2024-03-27 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 35I -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35I&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount of liabilities that are: (a) a contractual obligation: (i) to deliver cash or another financial asset to another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially unfavourable to the entity; or (b) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to deliver a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose, rights, options or warrants to acquire a fixed number of the entity’s own equity instruments for a fixed amount of any currency are equity instruments if the entity offers the rights, options or warrants pro rata to all of its existing owners of the same class of its own non-derivative equity instruments. Also, for those purposes the entity’s own equity instruments do not include puttable financial instruments that are classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. As an exception, an instrument that meets the definition of a financial liability is classified as an equity instrument if it has all the features and meets the conditions in paragraphs 16A-16B or paragraphs 16C-16D of IAS 32. [Refer: Classes of financial instruments [domain]; Financial assets; Derivatives [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 25 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_25&doctype=Standard -URIDate 2024-03-27 + Details
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