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Earnings Per Share (Tables)
 3 Months Ended
Mar. 31, 2016
Earnings Per Share [Abstract]  
Schedule of earnings per share
 
Three Months Ended
 
 
March 31,
 
In millions, except per share data
2016
 
2015
 
Net Income
$
57.5

 
$
55.1

 
Weighted Average Shares:
 
 
 
 
Basic
323.1


329.6


Dilutive Effect of RSUs and Stock Awards
1.1

 
2.3

 
Diluted
324.2


331.9


Income Per Share — Basic
$
0.18

 
$
0.17

 
 Income Per Share — Diluted
$
0.18

 
$
0.17