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Interest income and expense (Tables)
3 Months Ended
Jan. 31, 2022
Text block [abstract]  
Summary of Consolidated Interest Income and Expense for Both Product and Accounting Categories
The table below provides the consolidated interest income and expense by accounting categories.
 
$ millions, for the three months ended  
2022
Jan. 31
    2021
Oct. 31
    2021
Jan. 31
 
    
Interest
income
   
Interest
expense
    Interest
income
    Interest
expense
    Interest
income
    Interest
expense
 
Measured at amortized cost
(1)
 
$
3,376
 
 
$
        703
 
  $     3,264     $     652     $     3,256     $ 814  
Debt securities measured at FVOCI
(1)
 
 
 
84
 
 
 
n/a
 
    87       n/a       98       n/a  
Other
(2)
 
 
481
 
 
 
106
 
    386       105       417       118  
Total
 
$
3,941
 
 
$
809
 
  $ 3,737     $ 757     $ 3,771     $     932  
(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 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.