Investment in ATC (Tables)

12 Months Ended

Dec. 31, 2016

Equity Method Investments and Joint Ventures [Abstract]

ALLETE's Investment in ATC [Table Text Block]

ALLETE’s Investment in ATC
Year Ended December 31	2016			2015
Millions
Equity Investment Beginning Balance		$124.5			$121.1
Cash Investments	5.4			1.6
Equity in ATC Earnings	18.5			16.3
Distributed ATC Earnings	(12.8		)	(14.5		)
Equity Investment Ending Balance		$135.6			$124.5

ATC Summarized Financial Data
Balance Sheet Data
As of December 31	2016		2015
Millions
Current Assets		$75.8		$80.5
Non-Current Assets	4,312.9		3,957.6
Total Assets		$4,388.7		$4,038.1
Current Liabilities		$495.1		$330.3
Long-Term Debt	1,865.3		1,800.0
Other Non-Current Liabilities	271.5		245.0
Members’ Equity	1,756.8		1,662.8
Total Liabilities and Members’ Equity		$4,388.7		$4,038.1

Income Statement Data
Year Ended December 31	2016		2015		2014
Millions
Revenue		$650.8		$615.8		$635.0
Operating Expense	322.5		319.3		307.4
Other Expense	95.5		96.1		88.9
Net Income		$232.8		$200.4		$238.7
ALLETE’s Equity in Net Income		$18.5		$16.3		$19.6