Earnings Per Share
12 Months Ended
Dec. 31, 2021
Earnings per share [abstract]  
Earnings Per Share
Note 11: Earnings Per Share
Basic earnings per share was
calculated
by dividing earnings attributable to common shareholders less dividends declared on preference shares by the sum of the weighted-average number of common shares outstanding and vested deferred share units (“DSUs”) outstanding during the period. DSUs represent common shares that certain employees have elected to receive in the future upon vesting of share-based compensation awards or in lieu of cash compensation.
Diluted earnings per share was calculated using the denominator of the basic calculation described above adjusted to include the potentially dilutive effect of outstanding stock options and time-based restricted share units (“TRSUs”).
Earnings used in determining consolidated earnings per share and earnings per share from continuing operations are as follows:
 
    
        Year ended December 31,        
     
     
2021 
  
2020 
Earnings attributable to common shareholders
  
 
5,689
      
 
 
1,122
      
Less: Dividends declared on preference shares
  
 
(2)
 
 
 
(2)
 
Earnings used in consolidated earnings per share
  
 
5,687
 
 
 
1,120
 
Less: (
E
arnings) loss from discontinued operations, net of tax
  
 
(2)
 
 
 
27
 
Earnings used in earnings per share from continuing operations
  
 
5,685
 
 
 
1,147
 
The weighted-average number of common shares outstanding, as well as a reconciliation of the weighted-average number of common shares outstanding used in the basic earnings per share computation to the weighted-average number of common shares outstanding used in the diluted earnings per share computation, is presented below:
 
    
        Year ended December 31,        
 
     
     
2021 
    
2020 
 
Weighted-average number of common shares outstanding
  
 
493,106,315
 
  
 
496,343,778
 
Weighted-average number of vested DSUs
  
 
337,716
 
  
 
378,514
 
Basic
  
 
493,444,031
 
  
 
496,722,292
 
Effect of stock options and TRSUs
  
 
1,060,473
 
  
 
1,309,714
 
Diluted
  
 
494,504,504
 
  
 
498,032,006
 
There were nil and 557,056 share-based compensation awards outstanding at December 31, 2021 and 2020, respectively, where the exercise price was greater than the average market price. Accordingly, these awards were excluded from the diluted earnings per share computation because they were anti-dilutive.