Equity - Schedule of Deferred Share Units, Restricted Share Units and Performance Share Units under Long-Term Incentive Plan (Details) shares in Thousands	12 Months Ended
Dec. 31, 2017 shares
Deferred Share Units
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items]
Granted	113
Ending balance	113
Restricted Share Units
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items]
Granted	175
Ending balance	175
Performance Share Units
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items]
Granted	175
Ending balance	175

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.

No definition available.

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- Definition

The number of other equity instruments (ie other than share options) granted in a share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2016-01-13
-Paragraph 47
-Subparagraph b
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-URIDate 2016-03-31

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 2
-IssueDate 2016-01-13
-Paragraph 45
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-URIDate 2016-03-31

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- Definition

The number of other equity instruments (ie other than share options) outstanding in a share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 2
-IssueDate 2016-01-13
-Paragraph 45
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2016-03-30&anchor=para_45&doctype=Standard
-URIDate 2016-03-31

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