Investment in ATC (Tables)

3 Months Ended

Mar. 31, 2014

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, 2013		$114.6
Cash Investments	1.2
Equity in ATC Earnings	5.1
Distributed ATC Earnings	(4.3		)
Equity Investment Balance as of March 31, 2014		$116.6

ATC Summarized Financial Data [Table Text Block]

ATC’s summarized financial data for the quarters ended March 31, 2014 and 2013, is as follows:

	Quarter Ended
ATC Summarized Financial Data	March 31,
Income Statement Data	2014		2013
Millions
Revenue		$163.3	$151.8
Operating Expense	78.6		69.8
Other Expense	21.6		21.5
Net Income		$63.1	$60.5
ALLETE’s Equity in Net Income		$5.1	$5.2