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Investment in ATC (Tables)

12 Months Ended

Dec. 31, 2013

Investment in ATC [Abstract]

ALLETE's Interest in ATC [Table Text Block]



ALLETE’s Investment in ATC
Year Ended December 31	2013			2012
Millions
Equity Investment Beginning Balance		$107.3			$98.9
Cash Investments	3.1			4.7
Equity in ATC Earnings	20.3			19.4
Distributed ATC Earnings	(16.1		)	(15.7		)
Equity Investment Ending Balance		$114.6			$107.3

ATC Summarized Financial Data [Table Text Block]



ATC Summarized Financial Data
Balance Sheet Data
As of December 31	2013			2012
Millions
Current Assets		$80.7			$63.1
Non-Current Assets	3,509.5			3,274.7
Total Assets		$3,590.2			$3,337.8
Current Liabilities		$381.4			$251.5
Long-Term Debt	1,550.0			1,550.0
Other Non-Current Liabilities	126.2			95.8
Members’ Equity	1,532.6			1,440.5
Total Liabilities and Members’ Equity		$3,590.2			$3,337.8



Income Statement Data
Year Ended December 31	2013			2012			2011
Millions
Revenue		$626.3			$603.2			$567.2
Operating Expense	295.1			281.0			261.6
Other Expense	83.6			84.8			81.7
Net Income		$247.6			$237.4			$223.9
ALLETE’s Equity in Net Income		$20.3			$19.4			$18.4