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Invested Assets and Investment Income - Summary of Fair Values and the Fair Value Hierarchy (Detail) - CAD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Carrying value [Member] |  |
Disclosure of financial assets [Line Items] |  |
Carrying value | $ 38,890 | $ 38,076
Carrying value [Member] | Short-term securities [Member] |  |
Disclosure of financial assets [Line Items] |  |
Carrying value | 1 |
Carrying value [Member] | Mortgages [Member] |  |
Disclosure of financial assets [Line Items] |  |
Carrying value | 22,893 | 22,006
Carrying value [Member] | Loans to Bank clients [Member] |  |
Disclosure of financial assets [Line Items] |  |
Carrying value | 2,436 | 2,781
Carrying value [Member] | Real estate own use property [Member] |  |
Disclosure of financial assets [Line Items] |  |
Carrying value | 161 | 170
Carrying value [Member] | Public bonds HTM [Member] |  |
Disclosure of financial assets [Line Items] |  |
Carrying value | 1,372 | 1,411
Carrying value [Member] | Other invested assets [Member] |  |
Disclosure of financial assets [Line Items] |  |
Carrying value | 12,027 | 11,708
Fair value [Member] |  |
Disclosure of financial assets [Line Items] |  |
Total fair value | 39,384 | 38,172
Fair value [Member] | Short-term securities [Member] |  |
Disclosure of financial assets [Line Items] |  |
Total fair value | 1 |
Fair value [Member] | Mortgages [Member] |  |
Disclosure of financial assets [Line Items] |  |
Total fair value | 22,782 | 21,613
Fair value [Member] | Loans to Bank clients [Member] |  |
Disclosure of financial assets [Line Items] |  |
Total fair value | 2,411 | 2,760
Fair value [Member] | Real estate own use property [Member] |  |
Disclosure of financial assets [Line Items] |  |
Total fair value | 286 | 326
Fair value [Member] | Public bonds HTM [Member] |  |
Disclosure of financial assets [Line Items] |  |
Total fair value | 998 | 1,000
Fair value [Member] | Other invested assets [Member] |  |
Disclosure of financial assets [Line Items] |  |
Total fair value | 12,906 | 12,473
Level 1 [Member] |  |
Disclosure of financial assets [Line Items] |  |
Total fair value | 240 | 72
Level 1 [Member] | Other invested assets [Member] |  |
Disclosure of financial assets [Line Items] |  |
Total fair value | 240 | 72
Level 2 [Member] |  |
Disclosure of financial assets [Line Items] |  |
Total fair value | 3,410 | 3,760
Level 2 [Member] | Short-term securities [Member] |  |
Disclosure of financial assets [Line Items] |  |
Total fair value | 1 |
Level 2 [Member] | Loans to Bank clients [Member] |  |
Disclosure of financial assets [Line Items] |  |
Total fair value | 2,411 | 2,760
Level 2 [Member] | Public bonds HTM [Member] |  |
Disclosure of financial assets [Line Items] |  |
Total fair value | 998 | 1,000
Level 3 [Member] |  |
Disclosure of financial assets [Line Items] |  |
Total fair value | 35,734 | 34,340
Level 3 [Member] | Mortgages [Member] |  |
Disclosure of financial assets [Line Items] |  |
Total fair value | 22,782 | 21,613
Level 3 [Member] | Real estate own use property [Member] |  |
Disclosure of financial assets [Line Items] |  |
Total fair value | 286 | 326
Level 3 [Member] | Other invested assets [Member] |  |
Disclosure of financial assets [Line Items] |  |
Total fair value | $ 12,666 | $ 12,401

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- Definition The amount of assets that are: (a) cash; (b) an equity instrument of another entity; (c) a contractual right: (i) to receive cash or another financial asset from another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially favourable to the entity; or (d) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to receive a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose the entity’s own equity instruments do not include puttable financial instruments classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. [Refer: Financial instruments, class [member]; Financial liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 25 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_25&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 35H -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_35H&doctype=Standard -URIDate 2023-03-23 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 35M -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_35M&doctype=Standard -URIDate 2023-03-23 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 35N -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_35N&doctype=Standard -URIDate 2023-03-23 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 35I -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_35I&doctype=Standard -URIDate 2023-03-23 + Details
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