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Risk Management - Summary of Effect of Conditional Master Netting and Similar Arrangements (Parenthetical) (Detail) - CAD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
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Disclosure of offsetting of financial assets [abstract] |  |
Accrued interest receivable | $ 621 | $ 913
Accrued interest payable | 638 | 827
Over-collateralized on OTC derivative assets | 417 | 743
Over-collateralized on OTC derivative liabilities | 405 | 382
Over-collateralized on securities lending and reverse purchase agreements | 80 | 79
Over-collateralized on repurchase agreements | $ 0 | $ 0

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