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Comprehensive Income (Details) (USD $) In Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2011 | Jun. 30, 2010 | Jun. 30, 2011 | Jun. 30, 2010
Comprehensive Income (Loss) |  |  |  |
Net Income | $ 16.9 | $ 19.4 | $ 54.0 | $ 42.2
Other Comprehensive Income |  |  |  |
Unrealized Gain on Securities Net of Income Taxes | 0.2 | (0.6) | 1.1 | (0.5)
Defined Benefit Pension and Other Postretirement Plans Net of Income Taxes | 0.4 | 0.3 | 0.8 | 0.6
Total Other Comprehensive Income | 0.6 | (0.3) | 1.9 | 0.1
Total Comprehensive Income | 17.5 | 19.1 | 55.9 | 42.3
Less: Non-Controlling Interest in Subsidiaries | (0.1) | 0 | (0.2) | (0.2)
Comprehensive Income Attributable to ALLETE | 17.6 | 19.1 | 56.1 | 42.5
Income Taxes on Unrealized Gains on Securities | 0.2 | (0.4) | 0.8 | (0.4)
Income Taxes on Defined Benefit Pension and Other Postretirement Plans | $ 0.2 | $ 0.2 | $ 0.5 | $ 0.4

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