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Investment Contract Liabilities - Summary of Investment Contract Liabilities Measured at Amortized Cost and Fair Value Associated with Contracts (Parenthetical) (Detail) - CAD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
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Disclosure of Investment Contract Liabilities [line items] |  |
Investment contract liabilities reinsured | $ 128 | $ 0
Investment contract liabilities | 3,265 | 3,126
Carrying amount [member] |  |
Disclosure of Investment Contract Liabilities [line items] |  |
Investment contract liabilities reinsured | 128 | 0
Investment contract liabilities | 2,355 |
Fair value [Member] |  |
Disclosure of Investment Contract Liabilities [line items] |  |
Investment contract liabilities reinsured | 130 | $ 0
Investment contract liabilities | $ 2,588 |

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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 The amount of reinsurance contracts held that are liabilities. [Refer: Liabilities; Reinsurance contracts held [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2021-01-01 -Name IFRS -Number 17 -IssueDate 2018-01-01 -Paragraph 78 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=17&date=2018-03-01&anchor=para_78_d&doctype=Standard -URIDate 2018-03-16 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2021-01-01 -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 54 -Subparagraph ma -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_54_ma&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition Disclosure of Investment Contract Liabilities [line items] + References No definition available. + Details
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- Details
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- Details
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