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Related Parties - Summary of Compensation of Key Management Personnel (Detail) - CAD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Disclosure Of Compensation Of Key Management Personnel [abstract] |  |
Short-term employee benefits | $ 65 | $ 78
Post-employment benefits | 5 | 5
Share-based payments | 50 | 59
Termination benefits | 5 | 6
Other long-term benefits | 2 | 2
Total | $ 127 | $ 150

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- Definition The amount of compensation to key management personnel. [Refer: Key management personnel of entity or parent [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 24 -IssueDate 2018-01-01 -Paragraph 17 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=24&date=2018-03-01&anchor=para_17&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of compensation to key management personnel in the form of other long-term employee benefits. [Refer: Other long-term employee benefits; Key management personnel of entity or parent [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 24 -IssueDate 2018-01-01 -Paragraph 17 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=24&date=2018-03-01&anchor=para_17_c&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of compensation to key management personnel in the form of post-employment benefits. [Refer: Key management personnel of entity or parent [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 24 -IssueDate 2018-01-01 -Paragraph 17 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=24&date=2018-03-01&anchor=para_17_b&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of compensation to key management personnel in the form of share-based payments. [Refer: Key management personnel of entity or parent [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 24 -IssueDate 2018-01-01 -Paragraph 17 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=24&date=2018-03-01&anchor=para_17_e&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of compensation to key management personnel in the form of short-term employee benefits. [Refer: Key management personnel of entity or parent [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 24 -IssueDate 2018-01-01 -Paragraph 17 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=24&date=2018-03-01&anchor=para_17_a&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of compensation to key management personnel in the form of termination benefits. [Refer: Termination benefits expense; Key management personnel of entity or parent [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 24 -IssueDate 2018-01-01 -Paragraph 17 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=24&date=2018-03-01&anchor=para_17_d&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition Disclosure Of Compensation Of Key Management Personnel abstract. + References No definition available. + Details
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