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Risk Management - Summary of the Effect of Unconditional Netting (Detail) - CAD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Credit Linked Note [member] |  |
Disclosure of offsetting of financial liabilities [Line Items] |  |
Gross amounts of financial instruments | $ 1,276 | $ 1,242
Amounts subject to an enforceable netting arrangement | (1,276) | (1,242)
Net amounts of financial instruments presented in the Consolidated Statements of Financial Position | 0 |
Variable Funding Surplus Note [member] |  |
Disclosure of offsetting of financial liabilities [Line Items] |  |
Gross amounts of financial instruments | (1,276) | (1,242)
Amounts subject to an enforceable netting arrangement | 1,276 | $ 1,242
Net amounts of financial instruments presented in the Consolidated Statements of Financial Position | $ 0 |

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