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Provisions, Contingent Liabilities, Commitments, Guarantees, Pledged Assets, and Collateral (Details of Assets Pledged Against Liabilities and Collateral Assets Held or Re-pledged) (Parenthetical) (Details) - CAD ($)
$ in Billions
Oct. 31, 2025
Oct. 31, 2024
Provisions, Contingent Liabilities, Commitments, Guarantees, Pledged Assets, And Collateral [Abstract]    
Assets pledged and that the counterparty can subsequently repledge $ 68.0 $ 63.7