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Earnings Per Share (Tables)
 3 Months Ended
Mar. 31, 2022
Text Block [Abstract]  
Schedule Of Basic And Diluted Earnings Per Share
The following table presents the computation of basic and diluted earnings per share for the three months ended March 31, 2022 and 2021:
 
     
          
      
          
  
 
  
Three Months
Ended March 31,
In millions except per share amounts
  
2022
 
2021
Basic earnings per share:
  
      
 
      
Net income (loss) available to common shareholders
   
$
(73
) 
  
$
(106
) 
Basic weighted average shares
(1)
   
 
49.6
 
  
 
49.3
 
    
 
 
 
  
 
 
 
Net income (loss) per basic common share
   
$
(1.48
) 
  
$
(2.16
) 
    
 
 
 
  
 
 
 
Diluted earnings per share:
                 
Net income (loss) available to common shareholders
   
$
(73
) 
  
$
(106
) 
Diluted weighted average shares
(1)
   
 
49.6
 
  
 
49.3
 
    
 
 
 
  
 
 
 
Net income (loss) per diluted common share
   
$
(1.48
) 
  
$
(2.16
) 
    
 
 
 
  
 
 
 
Potentially
 
dilutive
 
securities
 
excluded
 
from
 
the
 
calculation
 
of
 
diluted
 
EPS
 
because
 
of
 
antidilutive
 
affect
   
 
5.1
 
  
 
5.0
 
 
(1) -
 Includes 0.9 million of participating securities that met the service condition and were eligible to receive nonforfeitable dividends or dividend equivalents for each of the three months ended March 31, 2022 and 2021, respectively.