Earnings Per Share and Common Stock

6 Months Ended

Jun. 30, 2011

Earnings Per Share and Common Stock [Abstract]

Earnings Per Share and Common Stock

NOTE 11.  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 quarter and six months ended June 30, 2011 and 2010, 0.3 million and 0.6 million, respectively, options 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.

		2011			2010
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 June 30,
Net Income Attributable to ALLETE	$17.0		$17.0	$19.4		$19.4
Common Shares	35.0	0.1	35.1	34.1	0.1	34.2
Earnings Per Share	$0.49		$0.48	$0.57		$0.57
For the Six Months Ended June 30,
Net Income Attributable to ALLETE	$54.2		$54.2	$42.4		$42.4
Common Shares	34.8	0.1	34.9	34.0	0.1	34.1
Earnings Per Share	$1.56		$1.55	$1.25		$1.25