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Structured Entities (Narrative) (Details) - CAD ($)
$ in Millions
12 Months Ended
Oct. 31, 2025
Oct. 31, 2024
Jul. 31, 2025
Disclosure of unconsolidated structured entities [line items]      
(Decrease) in liabilities due to deconsolidation     $ (19,332)
Trading loans, securities, and other   $ 1,111 1,142
Committed undrawn amount $ 16,000 13,100  
(Decrease) in business and government loans due to deconsolidation     (17,702)
(Decrease) in non-trading financial assets at FVTPL due to deconsolidation     (2,695)
(Decrease) in other assets due to deconsolidation     $ (77)
Asset management entities [member] | Unconsolidated structured entities [member]      
Disclosure of unconsolidated structured entities [line items]      
Non-interest income received from involvement with these asset management entities 2,400 2,300  
Income Received From Structured Entities 2,100 1,900  
Total assets under management $ 334,000 $ 302,900