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Earnings Per Share
 6 Months Ended
Jun. 30, 2021
Earnings Per Share [Abstract]  
Earnings Per Share
NOTE 4 — EARNINGS PER SHARE
We compute basic earnings per share using the weighted average number of common shares outstanding. We compute diluted earnings per share using the weighted average number of common shares outstanding, plus the dilutive effect of outstanding equity awards, computed using the treasury stock method.
The following table sets forth the computation of basic and diluted earnings per share for the quarters and six months ended June 30, 2021 and 2020 (dollars and shares in millions, except per share amounts):
 
    
Quarter
     
Six Months
  
    
2021
     
2020
     
2021
     
2020
  
Net income attributable to HCA Healthcare, Inc.
   
$
1,450
 
    $ 1,079     
$
2,873
 
    $ 1,660  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Weighted average common shares outstanding
   
 
328.171
 
      337.760     
 
333.119
 
      338.001  
Effect of dilutive incremental shares
   
 
4.442
 
      3.839     
 
4.821
 
      4.847  
    
 
 
     
 
 
     
 
 
     
 
 
  
Shares used for diluted earnings per share
   
 
332.613
 
      341.599     
 
337.940
 
      342.848  
    
 
 
     
 
 
     
 
 
     
 
 
  
Earnings per share:
                                    
Basic earnings
   
$
4.42
 
    $ 3.20     
$
8.62
 
    $ 4.91  
Diluted earnings
   
$
4.36
 
    $ 3.16     
$
8.50
 
    $ 4.84