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EMPLOYEE BENEFITS OBLIGATIONS - Significant Assumptions Weighted (Details) | Mar. 31, 2021 | Mar. 31, 2020
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Canada |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Actuarial assumption of discount rates, pension obligation | 3.32% | 3.96%
Actuarial assumption of expected rates of salary increases, pension obligation | 3.65% | 3.66%
Actuarial assumption of discount rates, net pension cost | 3.96% | 3.33%
Actuarial assumption of expected rates of salary increases, net pension cost | 3.66% | 3.66%
Foreign |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Actuarial assumption of discount rates, pension obligation | 1.06% | 1.46%
Actuarial assumption of expected rates of salary increases, pension obligation | 3.01% | 2.92%
Actuarial assumption of discount rates, net pension cost | 1.46% | 1.64%
Actuarial assumption of expected rates of salary increases, net pension cost | 2.92% | 2.92%

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- Definition The discount rate used as the significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit obligation, at present value; Actuarial assumptions [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2020-01-01 -Paragraph 144 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2020-en-r&anchor=para_144&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The expected rate of salary increases used as a significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit plans [member]; Defined benefit obligation, at present value; Actuarial assumptions [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2020-01-01 -Paragraph 144 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2020-en-r&anchor=para_144&doctype=Standard -URIDate 2020-01-01 + Details
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