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EARNINGS PER SHARE (Tables)
 3 Months Ended
Mar. 31, 2015
Earnings Per Share [Abstract]  
Basic and Diluted Earnings Per Share Table
 
 
Three Months Ended
March 31,
 
 
2015
 
2014
Computation of Income per Share
 
($ and shares in millions, except per share data)
Net income
 
$
13.1

 
$
29.5

Basic shares
 
77.4

 
79.2

Basic net income per share
 
$
0.17

 
$
0.37

Diluted shares:
 
 
 
 
Basic shares
 
77.4

 
79.2

Stock-based compensation
 
1.1

 
1.3

Diluted shares
 
78.5

 
80.5

Diluted net income per share
 
$
0.17

 
$
0.37