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Segmented Information - Additional Information (Detail) - Segment	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure Of Operating Segments [Abstract]
Number of operating segments	2
Percentage of corporations total revenue	0.00%	0.00%
Information about major customers	No one individual customer accounted for more than 10% of the Corporation’s total revenue.

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- References

No definition available.

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- Definition

Information about the entity's major customers and the extent of the entity's reliance on them.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 8
-IssueDate 2016-01-13
-Paragraph 34
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=8&date=2016-03-30&anchor=para_34&doctype=Standard
-URIDate 2016-03-31

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- Definition

The percentage of the entity's revenue. [Refer: Revenue]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 8
-IssueDate 2016-01-13
-Paragraph 34
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=8&date=2016-03-30&anchor=para_34&doctype=Standard
-URIDate 2016-03-31

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Number Of Operating Segments1

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