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Earnings Per Share (Tables)
 6 Months Ended
Jun. 30, 2013
Computations of Weighted Average Shares Outstanding

The computations of the weighted average shares outstanding for the three and six months ended June 30, 2013 and 2012 are as follows:

 

     Three months ended
June  30,		      Six months ended
June  30,		  

(in millions)

    2013      2012      2013      2012  

Weighted average shares outstanding:

            

Basic

      107.6         114.8         109.3         121.0   

Dilutive share-based awards

      0.8         0.5         0.8         0.8   
  

 

 

     

 

 

     

 

 

     

 

 

  

Diluted

      108.4         115.3         110.1         121.8