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EMPLOYEE BENEFITS OBLIGATIONS - Employee Benefit Obligation (Details) - CAD ($) $ in Millions | Mar. 31, 2021 | Mar. 31, 2020 | Mar. 31, 2019
--- | --- | --- | ---
Disclosure of defined benefit plans [line items] |  |  |
Employee benefits obligations | $ 222.2 | $ 212.8 |
Funded |  |  |
Disclosure of defined benefit plans [line items] |  |  |
Employee benefits obligations | 119.6 | 119.1 |
Present value of defined benefit obligation | Funded |  |  |
Disclosure of defined benefit plans [line items] |  |  |
Employee benefits obligations | 761.5 | 649.2 | $ 664.4
Present value of defined benefit obligation | Unfunded |  |  |
Disclosure of defined benefit plans [line items] |  |  |
Employee benefits obligations | 102.6 | 93.7 | 91.9
Plan assets | Funded |  |  |
Disclosure of defined benefit plans [line items] |  |  |
Employee benefits obligations | $ (641.9) | $ (530.1) | $ (543.7)

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain 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 2020-01-01 -Paragraph 140 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2020-en-r&anchor=para_140_a&doctype=Standard -URIDate 2020-01-01 + Details
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