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SHARE CAPITAL - Summary of number and weighted average exercise prices of share options (Details) | 12 Months Ended |
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Mar. 31, 2025 shares | Mar. 31, 2025 shares $ / shares | Mar. 31, 2025 shares option | Mar. 31, 2024 shares $ / shares | Mar. 31, 2025 $ / shares | Mar. 31, 2025 option
Share Capital, Reserves, and Other Equity Interest [Abstract] |  |  |  |  |  |
Number of options, beginning balance (in shares) | shares | 1,742,139 |  |  | 778,163 |  |
Number of share options granted in share-based payment arrangement (in shares) | shares | 3,484,626 |  |  | 1,011,711 |  |
Number of share options forfeited/expired in share-based payment arrangement (in shares) | shares | (1,270,081) |  |  | (47,735) |  |
Number of options, ending balance (in shares) | 3,956,684 |  | 3,956,684 | 1,742,139 |  |
Number of share options exercisable in share-based payment arrangement | 3,591,976 | 3,591,976 | 3,591,976 |  |  | 3,591,976
Weighted average exercise price, beginning balance (in dollars per share) |  | $ 35.17 |  | $ 51.68 |  |
Weighted average exercise price of share options granted in share-based payment arrangement |  | 13.84 |  | 26.22 |  |
Weighted average exercise price of share options exercised in share-based payment arrangement |  | 38.76 |  | 44.08 |  |
Weighted average exercise price, ending balance (in dollars per share) |  | $ 15.23 |  | $ 35.17 |  |
Weighted average exercise price of share options exercisable in share-based payment arrangement |  |  |  |  | $ 15.19 |

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- Definition The number of share options outstanding in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2024-01-01 -Paragraph 45 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2024-en-r&anchor=para_45_d&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2024-01-01 -Paragraph 45 -Subparagraph b -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2024-en-r&anchor=para_45_b_i&doctype=Standard -URIDate 2024-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2024-01-01 -Paragraph 45 -Subparagraph b -Clause vi -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2024-en-r&anchor=para_45_b_vi&doctype=Standard -URIDate 2024-03-27 + Details
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