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Interest income and expense (Tables)
12 Months Ended
Oct. 31, 2025
Text Block [Abstract]  
Summary of Consolidated Interest Income and Expense for Both Product and Accounting Category
The table below provides the consolidated interest income and expense by accounting category.
 
$ millions, for the year ended October 31
   Interest
income
     Interest
expense
 
2025
  
Measured at amortized cost
(1)(2)
  
$
41,094
 
  
$
30,385
 
  
Debt securities measured at FVOCI
(1)
  
 
3,242
 
  
 
n/a
 
    
Other
(3)
  
 
4,425
 
  
 
2,607
 
    
Total
  
$
48,761
 
  
$
32,992
 
2024   
Measured at amortized cost
(1)(2)
   $ 44,748      $ 36,253  
  
Debt securities measured at FVOCI
(1)
     3,709        n/a  
    
Other
(3)
     3,728        2,237  
    
Total
   $   52,185      $   38,490  
 
(1)
Interest income for financial instruments that are measured at amortized cost and debt securities that are measured at FVOCI is calculated using the effective interest rate method.
(2)
Includes interest income on sublease-related assets and interest expense on lease liabilities under IFRS 16.
(3)
Includes interest income and expense and dividend income for financial instruments that are mandatorily measured and designated at FVTPL and equity securities designated at FVOCI.
n/a
Not applicable.