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OTHER (GAINS) AND LOSSES - Narrative (Details) - CAD ($) $ in Millions | 12 Months Ended
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Mar. 31, 2022 | Mar. 31, 2021
Disclosure of detailed information about business combination [line items] |  |
Impairment loss on non-financial assets, COVID-19 | $ 0.0 | $ 103.5
Impairment of property, plant and equipment | $ 24.3 | 76.7
Civil Aviation |  |
Disclosure of detailed information about business combination [line items] |  |
Impairment of property, plant and equipment |  | 46.7
Impairment of intangible assets |  | 22.2
Inventory write-down |  | 11.2
Defense and Security |  |
Disclosure of detailed information about business combination [line items] |  |
Impairment of intangible assets |  | 12.6
Inventory write-down |  | $ 10.8

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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 2021-01-01 -Paragraph 118 -Subparagraph e -Clause iv -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2021-en-r&anchor=para_118_e_iv&doctype=Standard -URIDate 2021-03-24 + Details
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