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EMPLOYEE BENEFITS OBLIGATIONS - Expected Employer Contributions (Details) $ in Millions | 12 Months Ended
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Mar. 31, 2019 CAD ($)
Funded |
Disclosure of defined benefit plans [line items] |
Estimate of contributions expected to be paid to plan for next annual reporting period | $ 21.7
Unfunded |
Disclosure of defined benefit plans [line items] |
Estimate of contributions expected to be paid to plan for next annual reporting period | 3.6
Canada | Funded |
Disclosure of defined benefit plans [line items] |
Estimate of contributions expected to be paid to plan for next annual reporting period | 19.2
Canada | Unfunded |
Disclosure of defined benefit plans [line items] |
Estimate of contributions expected to be paid to plan for next annual reporting period | 2.8
Foreign | Funded |
Disclosure of defined benefit plans [line items] |
Estimate of contributions expected to be paid to plan for next annual reporting period | 2.5
Foreign | Unfunded |
Disclosure of defined benefit plans [line items] |
Estimate of contributions expected to be paid to plan for next annual reporting period | $ 0.8

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- Definition The estimate of the expected contributions to be made to a defined benefit plan for the next annual reporting period. [Refer: Defined benefit plans [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2018-01-01 -Paragraph 147 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=19&date=2018-03-01&anchor=para_147_b&doctype=Standard -URIDate 2018-03-16 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2018-01-01 -Paragraph 148 -Subparagraph d -Clause iii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=19&date=2018-03-01&anchor=para_148_d_iii&doctype=Standard -URIDate 2018-03-16 + Details
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