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Investments (Tables)
 12 Months Ended
Dec. 31, 2011
Investments [Abstract]  
Other Investments and ALLETE Properties [Table Text Block]
Investments
 
 
 
As of December 31
2011
 
2010
Millions
 
 
 
ALLETE Properties

$91.3

 

$94.0

Available-for-sale Securities
24.7

 
25.2

Other
16.3

 
6.8

Total Investments

$132.3

 

$126.0



Note 7.
Investments (Continued)

ALLETE Properties
 
 
 
As of December 31
2011
 
2010
Millions
 
 
 
Land Inventory Beginning Balance

$86.0

 

$74.9

Deeds to Collateralized Property (a)
1.8

 
9.9

Land Impairment (b)
(1.7
)
 
—

Cost of Real Estate Sold
(0.3
)
 
—

Capitalized Improvements and Other
0.2

 
1.2

Land Inventory Ending Balance
86.0

 
86.0

Long-Term Finance Receivables (net of allowances of $0.6 and $0.8) (a)
2.0

 
3.7

Other
3.3

 
4.3

Total Real Estate Assets

$91.3

 

$94.0

(a)
In 2010, the deeds to collateralized property resulted primarily from an entity which filed for Chapter 11 bankruptcy and were recorded at fair value net of estimated selling costs.
(b)
The land impairment charge was a result of an impairment analysis conducted in the fourth quarter of 2011 where the cost basis was reduced to the estimated fair value.
Available-for-sale Securities Reconciliation [Table Text Block]
Available-For-Sale Securities
Millions
 
Gross Unrealized
 
As of December 31
Cost

Gain

(Loss)
Fair Value

2011

$27.3


$0.1

$(2.7)

$24.7

2010

$27.4


$0.2

$(2.4)

$25.2

2009

$33.1


$0.1

$(3.7)

$29.5
Available-for-sale Securities [Table Text Block]
 
Net
Gross Realized
Net Unrealized
Gain (Loss) in Other
Year Ended December 31
Proceeds
Gain
(Loss)
Comprehensive Income
2011

$5.5

—

—

$(0.4)
2010
$(1.7)
—

—


$1.4

2009

$6.7

—

—


$4.5