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Investments (Tables) | 3 Months Ended
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Mar. 31, 2012
Investments [Abstract] |
Long-Term Investment Portfolio [Table Text Block] |
Investments | March 31, 2012 |  | December 31, 2011
Millions |  |  |
ALLETE Properties | $91.3 |  | $91.3
Available-for-sale Securities | 27.7 |  | 24.7
Other | 16.7 |  | 16.3
Total Investments | $135.7 |  | $132.3
ALLETE Properties | March 31, 2012 |  |  | December 31, 2011 |
Millions |  |  |
Land Inventory Beginning Balance (January 1, 2012 and 2011, respectively) | $86.0 |  | $86.0
Deeds to Collateralized Property | — |  |  | 1.8
Land Impairment | — |  |  | (1.7 | )
Capitalized Improvements and Other | 0.1 |  |  | 0.2
Cost of Real Estate Sold | — |  |  | (0.3 | )
Land Inventory Ending Balance | 86.1 |  | 86.0 |
Long-Term Finance Receivables (net of allowances of $0.6 and $0.6) | 2.0 |  | 2.0
Other | 3.2 |  | 3.3
Total Real Estate Assets | $91.3 |  | $91.3

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- Definition A table of investments, shown as a text block. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 + Details
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- Details
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