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Commitments and Contingencies - Schedule of Pledged Assets (Detail) - CAD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Debt securities [Member] |  |
Disclosure Of Pledged Assets [line items] |  |
Pledged amount | $ 10,939 | $ 13,150
Debt securities [Member] | Derivatives [Member] |  |
Disclosure Of Pledged Assets [line items] |  |
Pledged amount | 10,431 | 11,944
Debt securities [Member] | Secured borrowings [Member] |  |
Disclosure Of Pledged Assets [line items] |  |
Pledged amount | 0 |
Debt securities [Member] | Regulatory requirements [Member] |  |
Disclosure Of Pledged Assets [line items] |  |
Pledged amount | 307 | 320
Debt securities [Member] | Repurchase agreements [Member] |  |
Disclosure Of Pledged Assets [line items] |  |
Pledged amount | 201 | 886
Debt securities [Member] | Non-registered retirement plans in trust [Member] |  |
Disclosure Of Pledged Assets [line items] |  |
Pledged amount | 0 |
Debt securities [Member] | Other [Member] |  |
Disclosure Of Pledged Assets [line items] |  |
Pledged amount | 0 |
Other [Member] |  |
Disclosure Of Pledged Assets [line items] |  |
Pledged amount | 2,901 | 3,071
Other [Member] | Derivatives [Member] |  |
Disclosure Of Pledged Assets [line items] |  |
Pledged amount | 26 | 23
Other [Member] | Secured borrowings [Member] |  |
Disclosure Of Pledged Assets [line items] |  |
Pledged amount | 2,220 | 2,241
Other [Member] | Regulatory requirements [Member] |  |
Disclosure Of Pledged Assets [line items] |  |
Pledged amount | 74 | 77
Other [Member] | Repurchase agreements [Member] |  |
Disclosure Of Pledged Assets [line items] |  |
Pledged amount | 0 |
Other [Member] | Non-registered retirement plans in trust [Member] |  |
Disclosure Of Pledged Assets [line items] |  |
Pledged amount | 298 | 326
Other [Member] | Other [Member] |  |
Disclosure Of Pledged Assets [line items] |  |
Pledged amount | $ 283 | $ 404

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- Definition The amount of financial assets that the entity has pledged as collateral for liabilities or contingent liabilities, including amounts that have been reclassified in accordance with paragraph 3.2.23(a) of IFRS 9. [Refer: Contingent liabilities [member]; Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 14 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_14_a&doctype=Standard -URIDate 2023-03-23 + Details
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Balance Type: | debit
Period Type: | instant

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- Definition Pledged assets. + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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