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Earnings per share
 6 Months Ended
Apr. 30, 2022
Text Block [Abstract]  
Earnings per share
17.
Earnings per share
 
  
  
For the three months ended
 
  
For the six months ended
 
($ millions)
  
April 30
2022
 
  
January 31
2022
 
  
April 30
2021
 
  
April 30
2022
 
  
April 30
2021
 
Basic earnings per common share
  
      
  
      
  
      
  
      
  
      
Net income attributable to common shareholders
   
$
2,595
 
    $   2,608      $   2,289     
$
  5,203
 
    $   4,554  
Weighted average number of common shares outstanding
(millions)
   
 
1,199
 
      1,211        1,213     
 
1,205
 
      1,213  
Basic earnings per common share
(1)
(in dollars)
   
$
2.16
 
    $ 2.15      $ 1.89     
$
4.32
 
    $ 3.76  
Diluted earnings per common share
                                             
Net income attributable to common shareholders
   
$
2,595
 
    $ 2,608      $ 2,289     
$
5,203
 
    $ 4,554  
Dilutive impact of share-based payment options and others
(2)
   
 
–
 
      24        13     
 
67
 
      116  
Net income attributable to common shareholders (diluted)
   
$
2,595
 
    $ 2,632      $ 2,302     
$
5,270
 
    $ 4,670  
Weighted average number of common shares outstanding
(millions)
   
 
1,199
 
      1,211        1,213     
 
1,205
 
      1,213  
Dilutive impact of share-based payment options and others
(2)
(millions)
   
 
2
 
      19        10     
 
20
 
      35  
Weighted average number of diluted common shares outstanding
(millions)
   
 
1,201
 
      1,230        1,223     
 
1,225
 
      1,248  
Diluted earnings per common share
(1)
(in dollars)
   
$
2.16
 
    $ 2.14      $ 1.88     
$
4.30
 
    $ 3.74  
  (1)
Earnings per share calculations are based on full dollar and share amounts.
  (2)
Certain options as well as acquisition-related put/call options that the Bank may settle at its own discretion by issuing common shares were not included in the calculation of diluted earnings per share as they were anti-dilutive.