Comprehensive Income

9 Months Ended

Sep. 30, 2011

Other Comprehensive Income (Loss), Net of Tax [Abstract]

Comprehensive Income [Text Block]

COMPREHENSIVE INCOME

The components of total comprehensive income were as follows:

	Quarter Ended		Nine Months Ended
	September 30,		September 30,
Comprehensive Income (Loss)	2011	2010	2011	2010
Millions
Net Income	$20.5	$19.5	$74.5	$61.7
Other Comprehensive Income (Loss)
Unrealized Gain (Loss) on Securities
Net of income taxes of $(1.1), $0.3, $(0.3) and $(0.1)	(1.4)	0.4	(0.3)	(0.1)
Unrealized Loss on Derivatives
Net of income taxes of $(0.2), $—, $(0.2) and $—	(0.3)	—	(0.3)	—
Defined Benefit Pension and Other Postretirement Plans
Net of income taxes of $0.3, $0.2, $0.8 and $0.7	0.3	0.3	1.1	0.9
Total Other Comprehensive Income (Loss)	(1.4)	0.7	0.5	0.8
Total Comprehensive Income	$19.1	$20.2	$75.0	$62.5
Less: Non-Controlling Interest in Subsidiaries	—	(0.1)	(0.2)	(0.3)
Comprehensive Income Attributable to ALLETE	$19.1	$20.3	$75.2	$62.8