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Earnings Per Share (Tables)
 3 Months Ended
Mar. 31, 2013
Earnings Per Share [Abstract]  
Schedule Of Calculation Of Basic And Diluted Earnings Per Share
The calculation of basic and diluted earnings per share is as follows (in millions, except per share data):
 
Three Months Ended March 31,
 
2013
 
2012
Numerator for basic and diluted earnings per share:
 
 
 
Income from continuing operations
$
63.8

 
$
78.3

(Loss) income from discontinued operations
(9.6
)
 
1.0

Net income
$
54.2

 
$
79.3

Dividends and equivalents for share-based awards expected to be forfeited
—

 
—

Net income for basic earnings per share
$
54.2

 
$
79.3

Effect of Preferred Securities (1)
—

 
—

Net income for diluted earnings per share
$
54.2

 
$
79.3

Denominator for basic and diluted earnings per share:
 
 
 
Weighted-average shares outstanding
287.4

 
289.3

Share-based payment awards classified as participating securities
2.6

 
2.8

Denominator for basic earnings per share
290.0

 
292.1

Dilutive securities (2)
3.1

 
2.6

Preferred Securities (1)
—

 
—

Denominator for diluted earnings per share
293.1

 
294.7

Basic earnings per share:
 
 
 
Income from continuing operations
$
0.22

 
$
0.27

(Loss) income from discontinued operations
(0.03
)
 
—

Net income
$
0.19

 
$
0.27

Diluted earnings per share:
 
 
 
Income from continuing operations
$
0.22

 
$
0.27

(Loss) income from discontinued operations
(0.03
)
 
—

Net income
$
0.19

 
$
0.27