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ACCOUNTS PAYABLE AND ACCRUED LIABILITIES (Details) - CAD ($) $ in Millions | Mar. 31, 2018 | Mar. 31, 2017
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Subclassifications of assets, liabilities and equities [abstract] |  |
Accounts payable trade | $ 306.0 | $ 317.1
Accrued liabilities | 344.0 | 353.3
Amount due to related parties | 9.7 | 15.3
Current portion of royalty obligations | 9.9 | 9.5
Accounts payable and accrued liabilities | $ 669.6 | $ 695.2

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- Definition The current amount of payment due to suppliers for goods and services used in entity's business. [Refer: Current liabilities; Trade payables] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 78 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_78&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 70 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_70&doctype=Standard -URIDate 2017-03-09 + Details
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