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Earnings Per Share
 9 Months Ended
Sep. 30, 2013
Earnings Per Share [Abstract]  
Earnings Per Share
EARNINGS PER SHARE
Basic earnings per share (“EPS”) is computed by dividing net income by the weighted average number of common shares outstanding for the period, including outstanding unvested restricted stock awards. Diluted EPS is computed by dividing net income by the weighted average number of shares outstanding adjusted for the dilutive effect of stock options.
The following table presents the calculation of basic and diluted EPS:
 
Three Months Ended
 
Nine Months Ended
 
September 30,
 
September 30,
 
2013
 
2012
 
2013
 
2012
Net income from continuing operations
$
92.8

 
$
81.9

 
$
266.1

 
$
234.4

Loss from discontinued operations, net of income taxes
(0.2
)
 
(0.3
)
 
(0.6
)
 
(1.2
)
Net income
$
92.6

 
$
81.6

 
$
265.5

 
$
233.2

 
 
 
 
 
 
 
 
Weighted average common shares outstanding used in calculating basic EPS
121.5

 
121.2

 
121.3

 
124.4

Effect of dilutive stock options
2.0

 
2.2

 
2.0

 
2.0

Weighted average common shares used in calculating diluted EPS
123.5

 
123.4

 
123.3

 
126.4

 
 
 
 
 
 
 
 
Basic EPS amounts:
 
 
 
 
 
 
 
Continuing operations
$
0.76

 
$
0.68

 
$
2.19

 
$
1.88

Discontinued operations
$
—

 
$
—

 
$
—

 
$
(0.01
)
Net income
$
0.76

 
$
0.67

 
$
2.19

 
$
1.87

 
 
 
 
 
 
 
 
Diluted EPS amounts:
 
 
 
 
 
 
 
Continuing operations
$
0.75

 
$
0.66

 
$
2.16

 
$
1.85

Discontinued operations
$
—

 
$
—

 
$
—

 
$
(0.01
)
Net income
$
0.75

 
$
0.66

 
$
2.15

 
$
1.84


A summary of anti-dilutive options excluded from the computation of diluted earnings per share is as follows:
 
Three Months Ended
 
Nine Months Ended
 
September 30,
 
September 30,
 
2013
 
2012
 
2013
 
2012
Anti-dilutive options excluded from the computation of diluted earnings per share
0.6

 
0.9

 
0.7

 
0.9