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Provisions and Other Liabilities - Summary of Provisions and Other Liabilities (Detail) - CAD ($) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Jan. 01, 2017
Disclosure of other provisions [abstract] |  |  |
Provisions | $ 1,653 | $ 1,905 |
Derivative liabilities (net of current portion of $6 (2017 - $nil)) | 39 | 43 |
IMSA payable | 58 |  |
Other | 42 | 29 |
Other liabilities and provisions | $ 1,792 | $ 1,977 | $ 1,322

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- Definition The amount of non-current derivative financial liabilities. [Refer: Derivative financial liabilities] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_55&doctype=Standard -URIDate 2018-03-16 + Details
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