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Earnings Per Share
 12 Months Ended
Dec. 31, 2014
Earnings Per Share [Abstract]  
Earnings Per Share
Earnings Per Share:

Basic earnings per share are computed by dividing net income by the weighted-average number of common shares outstanding during the period. Diluted earnings per share are computed by dividing net income by the sum of the weighted-average number of shares and the number of equivalent shares assumed outstanding, if dilutive, under our stock-based compensation plans.

The computations of basic and diluted earnings per share for Income from continuing operations were as follows (in millions, except per share data):
 
 
For the Years Ended December 31,
 
2014
 
2013
 
2012
Net income
$
205.8

 
$
171.8

 
$
90.0

Add: Loss from discontinued operations
2.3

 
8.1

 
45.0

Income from continuing operations
$
208.1

 
$
179.9

 
$
135.0

 
 
 
 
 
 
Weighted-average shares outstanding – basic
47.9

 
49.8

 
50.7

Add: Potential effect of diluted securities attributable to stock-based payments
0.7

 
0.8

 
0.7

Weighted-average shares outstanding – diluted
48.6

 
50.6

 
51.4

 
 
 
 
 
 
Earnings per share - Basic:
 
 
 
 
 
Income from continuing operations
$
4.35

 
$
3.61

 
$
2.66

Loss from discontinued operations
(0.05
)
 
(0.16
)
 
(0.89
)
Net income
$
4.30

 
$
3.45

 
$
1.77

 
 
 
 
 
 
Earnings per share - Diluted:
 
 
 
 
 
Income from continuing operations
$
4.28

 
$
3.55

 
$
2.63

Loss from discontinued operations
(0.05
)
 
(0.16
)
 
(0.88
)
Net income
$
4.23

 
$
3.39

 
$
1.75


The following stock appreciation rights were outstanding but not included in the diluted earnings per share calculation because the assumed exercise of such rights would have been anti-dilutive (in millions, except for per share data):
 
For the Years Ended December 31,
 
2014
 
2013
 
2012
Weighted-average number of shares
0.3

 
0.1

 
0.1

Price ranges per share
$81.11 - $92.64

 
$81.11 - $81.14

 
$51.11 - $51.40