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OTHER (GAINS) AND LOSSES - Narrative (Details) - CAD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2025 | Mar. 31, 2024
Analysis of income and expense [abstract] |  |  |
Impairment of technology and other non-financial assets (Note 5) | $ 35.7 | $ 0.0 | $ 35.7
Impairment of intangible assets | 31.4 |  |
Impairment of property, plant and equipment | $ 4.3 |  |

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- Definition The amount of impairment loss recognised in profit or loss for intangible assets other than goodwill. [Refer: Impairment loss recognised in profit or loss; Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2024-01-01 -Paragraph 118 -Subparagraph e -Clause iv -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_118_e_iv&doctype=Standard -URIDate 2024-03-27 + Details
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