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Earnings Per Share (Tables)
9 Months Ended
Sep. 30, 2011
Earnings Per Share [Abstract] 
Calculation Of Earnings Per Share
In millions, except per share data
Net Income
Attributable to
Common Shareholders
 
Weighted Average Number of Shares
 
Per Share Amount
For the three months ended September 30, 2011
 
 
 
 
 
Basic earnings per share

$166.9

 
459.5

 

$0.36

Dilutive effect of share-based awards

 
1.5

 

Diluted earnings per share

$166.9

 
461.0

 

$0.36

For the three months ended September 30, 2010
 
 
 
 
 
Basic earnings per share

$154.7

 
476.6

 

$0.32

Dilutive effect of share-based awards

 
2.5

 

Diluted earnings per share

$154.7

 
479.1

 

$0.32


In millions, except per share data
Net Income
Attributable to
Common Shareholders
 
Weighted Average Number of Shares
 
Per Share Amount
For the nine months ended September 30, 2011
 
 
 
 
 
Basic earnings per share

$527.4

 
464.9

 

$1.13

Dilutive effect of share-based awards

 
1.9

 

Diluted earnings per share

$527.4

 
466.8

 

$1.13

For the nine months ended September 30, 2010
 
 
 
 
 
Basic earnings per share

$290.5

 
457.0

 

$0.64

Dilutive effect of share-based awards

 
2.9

 

Diluted earnings per share

$290.5

 
459.9

 

$0.63