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Risk Management - Summary of Effect of Conditional Master Netting and Similar Arrangements (Parenthetical) (Detail) - CAD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Disclosure of offsetting of financial assets [abstract]    
Accrued interest receivable $ 488 $ 725
Accrued interest payable 862 902
Over-collateralized on OTC derivative assets 507 599
Over-collateralized on OTC derivative liabilities 1,528 875
Over-collateralized on securities lending and reverse purchase agreements 63 36
Over-collateralized on repurchase agreements $ 0 $ 2