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EMPLOYEE BENEFITS OBLIGATIONS - Employee Benefit Obligation (Details) - CAD ($) $ in Millions | Mar. 31, 2023 | Mar. 31, 2022 | Mar. 31, 2021
--- | --- | --- | ---
Disclosure of defined benefit plans [line items] |  |  |
Employee benefits obligations - net | $ 40.8 | $ 109.7 |
Employee benefit assets | (51.1) | 0.0 |
Employee benefit obligations | 91.9 | 109.7 |
Funded plans |  |  |
Disclosure of defined benefit plans [line items] |  |  |
Employee benefits obligations - net | (51.0) | 14.8 |
Funded and unfunded defined benefit pension obligations | Funded plans |  |  |
Disclosure of defined benefit plans [line items] |  |  |
Employee benefits obligations - net | 590.7 | 638.7 | $ 761.5
Funded and unfunded defined benefit pension obligations | Unfunded plans |  |  |
Disclosure of defined benefit plans [line items] |  |  |
Employee benefits obligations - net | 91.8 | 94.9 | 102.6
Fair value of plan assets | Funded plans |  |  |
Disclosure of defined benefit plans [line items] |  |  |
Employee benefits obligations - net | $ (641.7) | $ (623.9) | $ (641.9)

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- Definition The amount of deficit or surplus in a defined benefit plan, adjusted for any effect of limiting a net defined benefit asset to the asset ceiling. [Refer: Defined benefit plans [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2022-03-24 -Paragraph 140 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2022-en-r&anchor=para_140_a&doctype=Standard -URIDate 2022-03-24 + Details
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