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Other Operating Income (Expense) - Schedule of Other Operating Income (Expense) (Detail) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Other operating Income (Expenses) [abstract] |  |
Settlement pricing adjustments (Note 28(b)) | $ (117) | $ 190
Share-based compensation | (59) | (125)
Environmental and care and maintenance costs | (31) | (186)
Social responsibility and donations | (18) | (7)
Gain (loss) on sale of assets | (3) | 35
Commodity derivatives | (36) | 12
Take or pay contract costs | (106) | (81)
Waneta Dam sale - Gain on disposal of property plant and equipment and break free | 888 | (28)
Other | (68) | (40)
Other operating income (expense) | $ 450 | $ (230)

X
- Definition The gains (losses) on disposals of non-current assets. [Refer: Non-current assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_112_c&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The gains resulting from change in the fair value of derivatives recognised in profit or loss. [Refer: Derivatives [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 85 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_85&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of miscellaneous other operating expenses. [Refer: Other operating income (expense)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_112_c&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of operating income (expense) that the entity does not separately disclose in the same statement or note. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 85 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_85&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition Environmental related expenses. + References No definition available. + Details
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- Definition Other operating income (expenses). + References No definition available. + Details
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- Definition Settlement pricing adjustments. + References No definition available. + Details
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- Definition Share based compensation expense. + References No definition available. + Details
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- Definition Social Responsibility and donations. + References No definition available. + Details
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- Definition Take or pay contract costs. + References No definition available. + Details
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- Definition Break fee paid for sale of asset. + References No definition available. + Details
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