Investment in ATC (Tables)

3 Months Ended

Mar. 31, 2016

Equity Method Investments and Joint Ventures [Abstract]

ALLETE's Investment in ATC [Table Text Block]

ALLETE’s Investment in ATC
Millions
Equity Investment Balance as of December 31, 2015		$124.5
Cash Investments	1.2
Equity in ATC Earnings	4.8
Distributed ATC Earnings	(1.9		)
Equity Investment Balance as of March 31, 2016		$128.6