v3.22.2.2
Guarantees, commitments, pledged assets and contingencies - Sources of Pledged Assets and Collateral (Detail) - CAD ($)
$ in Millions
Oct. 31, 2022
Oct. 31, 2021
Disclosure of financial assets [line items]    
Financial assets pledged as collateral for liabilities $ 664,122 $ 608,948
Sources Of Pledged Assets And Collateral [Member] | Bank assets [member]    
Disclosure of financial assets [line items]    
Financial assets pledged as collateral for liabilities 207,830 171,540
Sources Of Pledged Assets And Collateral [Member] | Bank assets [member] | Loans [member]    
Disclosure of financial assets [line items]    
Financial assets pledged as collateral for liabilities 97,178 79,282
Sources Of Pledged Assets And Collateral [Member] | Bank assets [member] | Securities [member]    
Disclosure of financial assets [line items]    
Financial assets pledged as collateral for liabilities 70,334 66,277
Sources Of Pledged Assets And Collateral [Member] | Bank assets [member] | Other assets [member]    
Disclosure of financial assets [line items]    
Financial assets pledged as collateral for liabilities 40,318 25,981
Sources Of Pledged Assets And Collateral [Member] | Client assets [member]    
Disclosure of financial assets [line items]    
Collateral received and available for sale or re-pledging 465,484 454,844
Less: not sold or re-pledged (9,192) (17,436)
Net client assets pledged and collateral $ 456,292 $ 437,408