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Investment Contract Liabilities - Summary of Movement in Investment Contract Liabilities Measured at Fair Value (Detail) - CAD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Disclosure of Investment Contract Liabilities [line items] |  |
Beginning balance | $ 3,126 |
Ending balance | 3,265 | $ 3,126
Fair value [Member] |  |
Disclosure of Investment Contract Liabilities [line items] |  |
Beginning balance | 639 | 631
New policies | 96 | 50
Changes in market conditions | 76 | 76
Redemptions, surrenders and maturities | (86) | (72)
Impact of changes in foreign exchange rates | 57 | (46)
Ending balance | $ 782 | $ 639

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- Definition The amount of liabilities relating to investment contracts that fall within the scope of IAS 39 or IFRS 9. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_55&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition Increase decrease in Investment contracts liabilities due to changes in market conditions. + References No definition available. + Details
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