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Earnings (Loss) Per Share (Tables)
 12 Months Ended
Dec. 31, 2012
Earnings Per Share [Abstract]  
Weighted Average Common And Common Equivalent Shares
The following table presents the calculation of basic and diluted EPS:
 
2012
 
2011
 
2010
Net income from continuing operations
$
317.3

 
$
284.2

 
$
235.3

Loss from discontinued operations, net of income taxes
(0.9
)
 
(2.8
)
 
(8.7
)
Net income
$
316.4

 
$
281.4

 
$
226.6

 
 
 
 
 
 
Weighted average common shares outstanding used in calculating basic EPS
123.8

 
144.8

 
156.9

Effect of dilutive stock options
2.0

 
2.5

 
1.7

Weighted average common shares used in calculating diluted EPS
125.8

 
147.3

 
158.6

 
 
 
 
 
 
Basic EPS amounts:
 
 
 
 
 
Continuing operations
$
2.56

 
$
1.96

 
$
1.50

Discontinued operations
$
(0.01
)
 
$
(0.02
)
 
$
(0.06
)
Net income
$
2.56

 
$
1.94

 
$
1.44

 
 
 
 
 
 
Diluted EPS amounts:
 
 
 
 
 
Continuing operations
$
2.52

 
$
1.93

 
$
1.48

Discontinued operations
$
(0.01
)
 
$
(0.02
)
 
$
(0.05
)
Net income
$
2.52

 
$
1.91

 
$
1.43
Anti-Dilutive Options Excluded From The Computation Of Diluted Earnings Per Share
A summary of anti-dilutive options excluded from the computation of diluted earnings per share is as follows:
 
2012
 
2011
 
2010
Anti-dilutive options excluded from the computation of diluted earnings per share
0.9

 
0.4

 
2.9