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Other Liabilities and Provisions - Summary of Other Liabilities and Provisions (Parenthetical) (Detail) - CAD CAD in Millions	Dec. 31, 2017	Dec. 31, 2016
Other Liabilities and Provisions [member]
Disclosure of other provisions [line items]
Derivative liabilities, current	CAD 0	CAD 5

X

- Definition

The amount of current derivative financial liabilities. [Refer: Derivative financial liabilities]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_55&doctype=Standard
-URIDate 2017-03-09

+ Details

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Balance Type:	credit
Period Type:	instant

X

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: