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Earnings per Share (EPS) (Tables)
9 Months Ended
Sep. 30, 2011
Earnings Per Share [Abstract] 
Earnings allocation method utilized in the calculation of basic and diluted EPS
The following illustrates the earnings allocation method utilized in the calculation of basic and diluted EPS.
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2011
 
2010
 
2011
 
2010
 
(In millions, except per share amounts)
EPS numerator:
 
 
 
 
 
 
 
Income from continuing operations, net of income taxes
$
283.5

 
$
237.6

 
$
756.1

 
$
589.4

Less: Net income attributable to noncontrolling interests
7.4

 
12.2

 
17.0

 
23.2

Income from continuing operations attributable to
   common stockholders, before allocation of earnings to
   participating securities
276.1

 
225.4

 
739.1

 
566.2

Less: Earnings allocated to participating securities
(1.6
)
 
(1.7
)
 
(4.2
)
 
(4.1
)
Income from continuing operations attributable to
   common stockholders, after earnings allocated to
   participating securities (1)
274.5

 
223.7

 
734.9

 
562.1

Loss from discontinued operations, net of income taxes
(2.0
)
 
(1.3
)
 
(3.7
)
 
(2.2
)
Net income attributable to common stockholders, after
   earnings allocated to participating securities (1)
$
272.5

 
$
222.4

 
$
731.2

 
$
559.9

 
 
 
 
 
 
 
 
EPS denominator:
 
 
 
 
 
 
 
Weighted average shares outstanding — basic
269.2

 
267.1

 
269.0

 
266.7

Impact of dilutive securities
1.4

 
1.5

 
1.5

 
1.7

Weighted average shares outstanding — diluted
270.6

 
268.6

 
270.5

 
268.4

 
 
 
 
 
 
 
 
Basic EPS attributable to common stockholders:
 
 
 
 
 
 
 
Income from continuing operations
$
1.02

 
$
0.84

 
$
2.73

 
$
2.11

Loss from discontinued operations
(0.01
)
 
—

 
(0.01
)
 
(0.01
)
Net income
$
1.01

 
$
0.84

 
$
2.72

 
$
2.10

 
 
 
 
 
 
 
 
Diluted EPS attributable to common stockholders:
 
 
 
 
 
 
 
Income from continuing operations
$
1.01

 
$
0.83

 
$
2.72

 
$
2.09

Loss from discontinued operations
(0.01
)
 
—

 
(0.01
)
 
(0.01
)
Net income
$
1.00

 
$
0.83

 
$
2.71

 
$
2.08

(1) 
The reallocation adjustment for participating securities to arrive at the numerator used to calculate diluted EPS was less than $0.1 million for the periods presented