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EMPLOYEE BENEFITS OBLIGATIONS - Significant Assumptions (Details) $ in Millions | Mar. 31, 2021 CAD ($)
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Actuarial assumption of discount rates |
Disclosure of defined benefit plans [line items] |
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption | $ (37.4)
Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption | 40.2
Actuarial assumption of expected rates of salary increases |
Disclosure of defined benefit plans [line items] |
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption | 9.0
Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption | (9.2)
Canada | Actuarial assumption of discount rates | Funded |
Disclosure of defined benefit plans [line items] |
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption | (30.3)
Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption | 32.5
Canada | Actuarial assumption of discount rates | Unfunded |
Disclosure of defined benefit plans [line items] |
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption | (2.9)
Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption | 3.1
Canada | Actuarial assumption of expected rates of salary increases | Funded |
Disclosure of defined benefit plans [line items] |
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption | 8.3
Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption | (8.5)
Canada | Actuarial assumption of expected rates of salary increases | Unfunded |
Disclosure of defined benefit plans [line items] |
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption | 0.5
Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption | (0.5)
Foreign | Actuarial assumption of discount rates | Funded |
Disclosure of defined benefit plans [line items] |
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption | (3.8)
Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption | 4.1
Foreign | Actuarial assumption of discount rates | Unfunded |
Disclosure of defined benefit plans [line items] |
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption | (0.4)
Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption | 0.5
Foreign | Actuarial assumption of expected rates of salary increases | Funded |
Disclosure of defined benefit plans [line items] |
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption | 0.2
Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption | (0.2)
Foreign | Actuarial assumption of expected rates of salary increases | Unfunded |
Disclosure of defined benefit plans [line items] |
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption | 0.0
Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption | $ 0.0

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- Definition The increase (decrease) in a defined benefit obligation that would have been caused by a decrease in a significant actuarial assumption that was reasonably possible at the end of the reporting period. [Refer: Actuarial assumptions [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2020-01-01 -Paragraph 145 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2020-en-r&anchor=para_145_a&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The increase (decrease) in a defined benefit obligation that would have been caused by an increase in a significant actuarial assumption that was reasonably possible at the end of the reporting period. [Refer: Actuarial assumptions [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2020-01-01 -Paragraph 145 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2020-en-r&anchor=para_145_a&doctype=Standard -URIDate 2020-01-01 + Details
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