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Earnings Per Share
 12 Months Ended
Dec. 31, 2019
Earnings Per Share [Abstract]  
Earnings Per Share
 
5.
EARNINGS PER SHARE
Earnings per share are computed as follows:
 
   
2019
   2018 
Basic earnings per Common Share:
          
Net income attributable to Magna International Inc.
  
$
1,765
 
  $2,296 
   
 
 
   
 
 
 
Weighted average number of Common Shares outstanding during the year
  
 
314.7
 
   345.4 
   
 
 
   
 
 
 
Basic earnings per Common Share
  
$
5.61
 
  $6.65 
   
 
 
   
 
 
 
Diluted earnings per Common Share [a]:
          
Net income attributable to Magna International Inc.
  
$
1,765
 
  $2,296 
   
 
 
   
 
 
 
Weighted average number of Common Shares outstanding during the year
  
 
314.7
 
   345.4 
Adjustments
:
          
Stock options and restricted stock
   
1.1
    2.1 
   
 
 
   
 
 
 
   
 
315.8
 
   347.5 
   
 
 
   
 
 
 
Diluted earnings per Common Share
  
$
5.59
 
  $6.61 
   
 
 
   
 
 
 
 
[a]
Diluted earnings per Common Share exclude
4.0
million [2018 – 0.8 million] Common Shares issuable under the Company’s Incentive Stock Option Plan because these options were not 
“in-the-money”.
 The dilutive effect of participating securities using the 
two-class
 method was excluded from the calculation of earnings per share because the effect would be immaterial.