Investment in ATC (Tables)

12 Months Ended

Dec. 31, 2015

Equity Method Investments and Joint Ventures [Abstract]

ALLETE's Investment in ATC [Table Text Block]

ALLETE’s Investment in ATC
Year Ended December 31	2015			2014
Millions
Equity Investment Beginning Balance		$121.1			$114.6
Cash Investments	1.6			3.9
Equity in ATC Earnings	16.3			19.6
Distributed ATC Earnings	(14.5		)	(17.0		)
Equity Investment Ending Balance		$124.5			$121.1

ATC Summarized Financial Data
Balance Sheet Data
As of December 31	2015		2014
Millions
Current Assets		$80.5		$66.4
Non-Current Assets	3,957.6		3,728.7
Total Assets		$4,038.1		$3,795.1
Current Liabilities		$330.3		$313.1
Long-Term Debt	1,800.0		1,701.0
Other Non-Current Liabilities	245.0		163.8
Members’ Equity	1,662.8		1,617.2
Total Liabilities and Members’ Equity		$4,038.1		$3,795.1

Income Statement Data
Year Ended December 31	2015		2014		2013
Millions
Revenue		$615.8		$635.0		$626.3
Operating Expense	319.3		307.4		295.1
Other Expense	96.1		88.9		83.6
Net Income		$200.4		$238.7		$247.6
ALLETE’s Equity in Net Income		$16.3		$19.6		$20.3