Investments (Tables)

3 Months Ended

Mar. 31, 2014

Investments [Abstract]

Other Investments and ALLETE Properties [Table Text Block]

Other Investments	March 31, 2014		December 31, 2013
Millions
ALLETE Properties		$90.1		$89.9
Available-for-sale Securities (a)	19.8		17.7
Cash Equivalents (b)	3.9		34.2
Other	2.6		4.5
Total Other Investments		$116.4		$146.3

(a) As of March 31, 2014, the aggregate amount of available-for-sale corporate debt securities maturing in one year or less was $0.4 million, in one year to less than three years was $4.0 million, in three years to less than five years was $1.3 million, and in five or more years was $4.3 million.

(b) During the quarter ended March 31, 2014, cash included in Other Investments was transferred to Cash and Cash Equivalents.

NOTE 3.  INVESTMENTS (Continued)

ALLETE Properties	March 31, 2014		December 31, 2013
Millions
Land Inventory Beginning Balance		$85.4		$86.5
Cost of Sales	—		(1.5		)
Other	0.2		0.4
Land Inventory Ending Balance	85.6		85.4
Long-Term Finance Receivables (net of allowances of $0.6 and $0.6)	1.4		1.4
Other	3.1		3.1
Total Real Estate Assets		$90.1		$89.9