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EARNINGS PER SHARE
 12 Months Ended
Dec. 31, 2013
Earnings Per Share [Abstract]  
EARNINGS PER SHARE
EARNINGS PER SHARE

Basic and diluted income per share are computed by dividing net income by the weighted average number of common shares outstanding.  Diluted net income per share reflects the dilutive effect of stock-based compensation.

 
Years ended December 31,
Computation of Income per Share
2013
 
2012
 
2011
 
(In millions, except per share data)
Net income
$
178.6

 
$
149.6

 
$
241.7

Basic shares
79.9

 
80.1

 
80.0

Basic net income per share
$
2.24

 
$
1.87

 
$
3.02

Diluted shares:
 
 
 
 
 
Basic shares
79.9

 
80.1

 
80.0

Stock-based compensation
1.0

 
0.9

 
0.8

Diluted shares
80.9

 
81.0

 
80.8

Diluted net income per share
$
2.21

 
$
1.85

 
$
2.99



The computation of dilutive shares from stock-based compensation does not include 0.6 million, 1.0 million and 0.9 million shares in 2013, 2012 and 2011, respectively, as their effect would have been anti-dilutive.