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Investment in ATC (Tables)

3 Months Ended

Mar. 31, 2012

Investment in ATC [Abstract]

ALLETE's Investment in ATC [Table Text Block]

ALLETE’s Investment in ATC
Millions
Equity Investment Balance as of December 31, 2011	$98.9
Cash Investments	0.8
Equity in ATC Earnings	4.6
Distributed ATC Earnings	(3.8	)
Equity Investment Balance as of March 31, 2012	$100.5

ATC Summarized Financial Data [Table Text Block]

ATC’s summarized financial data for the quarters ended March 31, 2012 and 2011, is as follows:

	Quarter Ended
ATC Summarized Financial Data	March 31,
Income Statement Data	2012		2011
Millions
Revenue	$147.7		$139.6
Operating Expense	69.6		63.1
Other Expense	20.0		22.3
Net Income	$58.1		$54.2
ALLETE’s Equity in Net Income	$4.6		$4.4

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- Definition

Tabular disclosure of summarized financial data reported by an equity method investment of the entity.

+ References

No definition available.

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- Definition

Tabular disclosure of equity method investments in common stock. The disclosure may include: (a) the name of each investee or group of investments for which combined disclosure is appropriate, (2) the percentage ownership of common stock, (3) the difference, if any, between the carrying amount of an investment and the value of the underlying equity in the net assets and the accounting treatment of difference, if any, and (4) the aggregate value of each identified investment based on its quoted market price, if available.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 18

-Paragraph 20

-Subparagraph a, b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

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