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Earnings Per Share (Tables)
3 Months Ended
Mar. 31, 2014
Components of Basic and Diluted Earnings Per Share

The components of basic and diluted earnings per share are as follows:

 

     Three Months Ended
March 31,
 
In millions, except per share amounts    2014      2013  

Net income available for common stockholders

   $ 59       $ 59   
  

 

 

    

 

 

 

Weighted average outstanding shares of common stock

     158.4         165.4   

Dilutive effect of employee stock options, restricted stock and other stock awards

     2.5         3.1   
  

 

 

    

 

 

 

Common stock and common stock equivalents

     160.9         168.5   
  

 

 

    

 

 

 

Earnings per share:

     

Basic

   $ 0.37       $ 0.36   

Diluted

   $ 0.37       $ 0.35