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Risk Management - Summary of Effect of Conditional Master Netting and Similar Arrangements (Parenthetical) (Detail) - CAD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
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Disclosure of offsetting of financial assets [abstract] |  |
Accrued interest receivable | $ 892 | $ 696
Accrued interest payable | 1,114 | 1,061
Over-collateralized on OTC derivative assets | 1,373 | 1,149
Over-collateralized on OTC derivative liabilities | 627 | 526
Over-collateralized on securities lending and reverse purchase agreements | 74 | 44
Over-collateralized on repurchase agreements | $ 0 | $ 0

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