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Total Invested Assets and Related Net Investment Income - Hedge Ineffectiveness (Details) - CAD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Financial Instruments [Abstract] |  |
Gains (losses) on the hedged items attributable to the hedged risk | $ (41) | $ (22)
Gains (losses) on the hedging derivatives | 40 | 19
Net ineffectiveness on fair value hedges | $ (1) | $ (3)

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- Definition The gains (losses) on hedged items in fair value hedges, which are attributable to the hedged risk. [Refer: Fair value hedges [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2018-01-01 -Name IFRS -Number 7 -IssueDate 2017-01-01 -Paragraph 24 -Subparagraph a -Clause ii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-02&anchor=para_24_a_ii&doctype=Standard&book=B -URIDate 2017-03-09 + Details
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- Definition The gains (losses) on hedging instruments in fair value hedges. [Refer: Fair value hedges [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2018-01-01 -Name IFRS -Number 7 -IssueDate 2017-01-01 -Paragraph 24 -Subparagraph a -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-02&anchor=para_24_a_i&doctype=Standard&book=B -URIDate 2017-03-09 + Details
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- Definition The gains (losses) on the ineffective portion of cash flow hedges recognised in profit or loss. [Refer: Cash flow hedges [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2018-01-01 -Name IFRS -Number 7 -IssueDate 2017-01-01 -Paragraph 24 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-02&anchor=para_24_b&doctype=Standard&book=B -URIDate 2017-03-09 + Details
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- Definition Financial Instruments [Abstract] + References No definition available. + Details
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