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Loans, Impaired Loans, and Allowance for Credit Losses (Summary of Information Related to Bank's Impaired Loans) (Details) - CAD ($)
$ in Millions
Oct. 31, 2025
Oct. 31, 2024
Disclosure of detailed information about financial instruments [line items]    
Unpaid principal balance $ 5,812 $ 5,259
Carrying value of impaired loans 5,420 4,949
Related allowance for credit losses 1,588 1,542
Average gross impaired loans 5,299 3,998
Residential mortgages [member]    
Disclosure of detailed information about financial instruments [line items]    
Unpaid principal balance 1,033 827
Carrying value of impaired loans 978 765
Related allowance for credit losses 80 60
Average gross impaired loans 886 685
Consumer instalment and other personal [Member]    
Disclosure of detailed information about financial instruments [line items]    
Unpaid principal balance 1,114 1,045
Carrying value of impaired loans 1,074 990
Related allowance for credit losses 274 262
Average gross impaired loans 1,054 894
Credit card [member]    
Disclosure of detailed information about financial instruments [line items]    
Unpaid principal balance 569 575
Carrying value of impaired loans 568 575
Related allowance for credit losses 460 378
Average gross impaired loans 568 544
Business and government [member]    
Disclosure of detailed information about financial instruments [line items]    
Unpaid principal balance 3,096 2,812
Carrying value of impaired loans 2,800 2,619
Related allowance for credit losses 774 842
Average gross impaired loans $ 2,791 $ 1,875