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Earnings Per Common Share
 9 Months Ended
Sep. 30, 2020
Earnings Per Share [Abstract]  
Earnings Per Common Share
Note 21.
Earnings Per Common Share
Basic earnings per common share (EPS) is calculated by dividing net earnings to common by the weighted average number of common shares outstanding and RSUs for which the delivery of the underlying common stock is not subject to satisfaction of future service or performance conditions (collectively, basic shares). Diluted EPS includes the determinants of basic EPS and, in addition, reflects the dilutive effect of the common stock deliverable for RSUs for which the delivery of the underlying common stock is subject to satisfaction of future service or performance conditions.
The table below presents information about basic and diluted EPS.
 
    Three Months
Ended September		         Nine Months
Ended September		  
in millions, except per share amounts
  
 
2020
 
      2019           
 
2020
 
      2019  
Net earnings to common
  
 
$3,233
 
      $1,793    
 
  
 
$4,553
 
      $6,173  
Weighted average basic shares
  
 
355.9
 
      370.0      
 
356.5
 
      374.7  
Effect of dilutive RSUs
  
 
4.0
 
      4.3    
 
  
 
3.5
 
      3.5  
Weighted average diluted shares
  
 
359.9
 
      374.3    
 
  
 
360.0
 
      378.2  
 
Basic EPS
  
 
$  9.07
 
      $  4.83      
 
$12.71
 
      $16.43  
Diluted EPS
  
 
$  8.98
 
      $  4.79    
 
  
 
$12.65
 
      $16.32  
In the table above:
 
•  
Net earnings to common represents net earnings applicable to common shareholders, which is calculated as net earnings less preferred stock dividends.
 
•  
Unvested share-based awards that have
non-forfeitable
rights to dividends or dividend equivalents are treated as a separate class of securities under the
two-class
method. Distributed earnings allocated to these securities reduce net earnings to common to calculate EPS under this method. The impact of applying this methodology was a reduction in basic EPS of $0.01 for the three months ended September 2020, $0.02 for the three months ended September 2019, $0.06 for the nine months ended September 2020 and $0.04 for the nine months ended September 2019.
 
•  
Diluted EPS does not include antidilutive RSUs of
less than
0.1 million for
each of
the three
months ended September 2020, three months ended September 2019
and nine months ended September 
2019
, and 0.1 million for the nine months ended September 20
20
.