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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
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

X

- 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

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X

- 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

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- Definition

Disclosure of Investment Contract Liabilities [line items]

+ References

No definition available.

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