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Loans, Impaired Loans, and Allowance for Credit Losses (Summary of Credit Quality) (Details) - Business and government [member] - CAD ($)
$ in Millions
Oct. 31, 2025
Oct. 31, 2024
Loans To Business And Government [Line Items]    
Loans at amortized cost $ 345,943 $ 356,973
Loans at FVOCI 288 230
Loans and acceptances 346,231 357,203
Allowance for loan losses 3,847 3,583
Loans and acceptances, net of allowance $ 342,384 $ 353,620