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Insurance Contract Liabilities and Reinsurance Assets - Summary of Components of Gross and Net Insurance Contract Liabilities (Detail) - CAD CAD in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of insurance contract liabilities and reinsurance assets [abstract]
Gross insurance contract liabilities	CAD 291,767	CAD 284,778
Gross benefits payable and provision for unreported claims	3,376	3,309
Gross policyholder amounts on deposit	9,462	9,418
Gross insurance contract liabilities	304,605	297,505	CAD 285,288
Reinsurance assets	(30,359)	(34,952)
Net insurance contract liabilities	CAD 274,246	CAD 262,553

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- Definition

The amount of assets under reinsurance contracts in which the entity is the policyholder.

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- Definition

The amount of liabilities under insurance contracts and reinsurance contracts issued. [Refer: Types of insurance contracts [member]]

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The amount of gross benefits payable and provision related to insurance contracts (amounts currently due to and from agents, brokers and policyholders related to insurance contracts).

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The amount of gross liabilities under insurance contracts.

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The amount of gross policyholder amounts on deposit reported by policyholders as the result of the occurrence of insured events. [Refer: Insurance contracts [Member]]

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The amount of insurance contract liabilities net of reinsurance assets.

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