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EMPLOYEE BENEFITS OBLIGATIONS - Employee Benefit Obligation (Details) - CAD ($) $ in Millions | Mar. 31, 2022 | Mar. 31, 2021 | Mar. 31, 2020
--- | --- | --- | ---
Disclosure of defined benefit plans [line items] |  |  |
Employee benefits obligations | $ 109.7 | $ 222.2 |
Funded plans |  |  |
Disclosure of defined benefit plans [line items] |  |  |
Employee benefits obligations | 14.8 | 119.6 |
Funded and unfunded defined benefit pension obligations | Funded plans |  |  |
Disclosure of defined benefit plans [line items] |  |  |
Employee benefits obligations | 638.7 | 761.5 | $ 649.2
Funded and unfunded defined benefit pension obligations | Unfunded plans |  |  |
Disclosure of defined benefit plans [line items] |  |  |
Employee benefits obligations | 94.9 | 102.6 | 93.7
Fair value of plan assets | Funded plans |  |  |
Disclosure of defined benefit plans [line items] |  |  |
Employee benefits obligations | $ (623.9) | $ (641.9) | $ (530.1)

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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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 2021-01-01 -Paragraph 140 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2021-en-r&anchor=para_140_a&doctype=Standard -URIDate 2021-03-24 + Details
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