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Derivative and Hedging Instruments - Summary of Recognized Gains Losses on Derivatives and Hedged Items in Fair Value Hedges in Investment Income (Parenthetical) (Detail)
$ in Millions
Dec. 31, 2023
CAD ($)
Disclosure of detailed information about hedges [line items]  
carrying amounts for hedged items $ 9,191
carrying amounts for hedged items relates to new hedge relationships 9,191
IFRS 9 [Member]  
Disclosure of detailed information about hedges [line items]  
carrying amounts for hedged items 9,160
carrying amounts for hedged items relates to new hedge relationships 9,160
Hedged Item Liabilities scarrying amounts for hedged items relates to new hedge relationships $ 29,133