Business Segments

9 Months Ended

Sep. 30, 2011

Segment Reporting [Abstract]

Business Segments [Text Block]

BUSINESS SEGMENTS

Regulated Operations includes our regulated utilities, Minnesota Power and SWL&P, as well as our investment in ATC, a Wisconsin-based utility that owns and maintains electric transmission assets in parts of Wisconsin, Michigan, Minnesota and Illinois. Investments and Other is comprised primarily of BNI Coal, our coal mining operations in North Dakota, and ALLETE Properties, our Florida real estate investment. This segment also includes a small amount of non-rate base generation, land available-for-sale in Minnesota and earnings on cash and short-term investments.

	Consolidated	Regulated Operations	Investments and Other
Millions
For the Quarter Ended September 30, 2011
Operating Revenue	$226.9	$207.4	$19.5
Fuel and Purchased Power Expense	74.8	74.8	—
Operating and Maintenance Expense	90.5	70.4	20.1
Depreciation Expense	22.7	21.4	1.3
Operating Income (Loss)	38.9	40.8	(1.9)
Interest Expense	(10.9)	(9.2)	(1.7)
Equity Earnings in ATC	4.7	4.7	—
Other Income (Expense)	0.5	0.6	(0.1)
Income (Loss) Before Non-Controlling Interest and Income Taxes	33.2	36.9	(3.7)
Income Tax Expense (Benefit)	12.7	13.1	(0.4)
Net Income (Loss)	20.5	23.8	(3.3)
Less: Non-Controlling Interest in Subsidiaries	—	—	—
Net Income (Loss) Attributable to ALLETE	$20.5	$23.8	$(3.3)

	Consolidated	Regulated Operations	Investments and Other
Millions
For the Quarter Ended September 30, 2010
Operating Revenue	$224.1	$204.8	$19.3
Fuel and Purchased Power Expense	79.0	79.0	—
Operating and Maintenance Expense	89.8	70.2	19.6
Depreciation Expense	20.0	18.9	1.1
Operating Income (Loss)	35.3	36.7	(1.4)
Interest Expense	(9.7)	(8.0)	(1.7)
Equity Earnings in ATC	4.5	4.5	—
Other Income (Expense)	0.6	1.3	(0.7)
Income (Loss) Before Non-Controlling Interest and Income Taxes	30.7	34.5	(3.8)
Income Tax Expense (Benefit)	11.2	12.4	(1.2)
Net Income (Loss)	19.5	22.1	(2.6)
Less: Non-Controlling Interest in Subsidiaries	(0.1)	—	(0.1)
Net Income (Loss) Attributable to ALLETE	$19.6	$22.1	$(2.5)

	Consolidated		Regulated Operations		Investments and Other
Millions
For the Nine Months Ended September 30, 2011
Operating Revenue	$689.0		$632.2		$56.8
Fuel and Purchased Power Expense	229.8		229.8		—
Operating and Maintenance Expense	276.3		218.8		57.5
Depreciation Expense	67.1		63.5		3.6
Operating Income (Loss)	115.8		120.1		(4.3)
Interest Expense	(32.6)		(26.9)		(5.7)
Equity Earnings in ATC	13.7		13.7		—
Other Income	2.3		1.8		0.5
Income (Loss) Before Non-Controlling Interest and Income Taxes	99.2		108.7		(9.5)
Income Tax Expense (Benefit)	24.7		28.2		(3.5)
Net Income (Loss)	74.5		80.5		(6.0)
Less: Non-Controlling Interest in Subsidiaries	(0.2)		—		(0.2)
Net Income (Loss) Attributable to ALLETE	$74.7		$80.5		$(5.8)
As of September 30, 2011
Total Assets		$2,754.4		$2,436.0		$318.4
Property, Plant and Equipment – Net		$1,902.1		$1,847.1		$55.0
Accumulated Depreciation		$1,079.0		$1,028.6		$50.4
Capital Additions		$143.5		$128.4		$15.1

	Consolidated		Regulated Operations		Investments and Other
Millions
For the Nine Months Ended September 30, 2010
Operating Revenue	$668.9		$615.0		$53.9
Fuel and Purchased Power Expense	233.1		233.1		—
Operating and Maintenance Expense	262.9		209.3		53.6
Depreciation Expense	59.8		56.6		3.2
Operating Income (Loss)	113.1		116.0		(2.9)
Interest Expense	(28.1)		(23.3)		(4.8)
Equity Earnings in ATC	13.4		13.4		—
Other Income	3.8		3.6		0.2
Income (Loss) Before Non-Controlling Interest and Income Taxes	102.2		109.7		(7.5)
Income Tax Expense (Benefit)	40.5		44.5		(4.0)
Net Income (Loss)	61.7		65.2		(3.5)
Less: Non-Controlling Interest in Subsidiaries	(0.3)		—		(0.3)
Net Income (Loss) Attributable to ALLETE	$62.0		$65.2		$(3.2)
As of September 30, 2010
Total Assets		$2,579.1		$2,299.7		$279.4
Property, Plant and Equipment – Net		$1,742.6		$1,698.1		$44.5
Accumulated Depreciation		$1,022.2		$973.2		$49.0
Capital Additions		$175.5		$174.3		$1.2