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Earnings Per Share and Common Stock
 3 Months Ended
Mar. 31, 2012
Earnings Per Share and Common Stock [Abstract]  
Earnings Per Share and Common Stock [Text Block]
EARNINGS PER SHARE AND COMMON STOCK

The difference between basic and diluted earnings per share, if any, arises from outstanding stock options and performance share awards granted under our Executive and Director Long-Term Incentive Compensation Plans. For the quarters ended March 31, 2012 and 2011, 0.2 million and 0.4 million options, respectively, to purchase shares of common stock were excluded from the computation of diluted earnings per share because the option exercise prices were greater than the average market prices; therefore, their effect would have been anti-dilutive.
 
 
 
2012
 
 
 
 
 
2011
 
 
Reconciliation of Basic and Diluted
 
 
Dilutive
 
 
 
 
 
Dilutive
 
 
Earnings Per Share
Basic
 
Securities
 
Diluted
 
Basic
 
Securities
 
Diluted
Millions Except Per Share Amounts
 
 
 
 
 
 
 
 
 
 
 
For the Quarter Ended March 31,
 
 
 
 
 
 
 
 
 
 
 
Net Income Attributable to ALLETE
$24.4

 
 
 

$24.4

 

$37.2

 
 
 

$37.2

Common Shares
36.8

 
0.1

 
36.9

 
34.6

 
0.1

 
34.7

Earnings Per Share
$0.66

 
 
 
$0.66

 

$1.07

 
 
 

$1.07