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v2.4.0.8

Business Segments (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013 | Dec. 31, 2013
Business Segments [Line Items] |  |  |  |  |
Operating Revenue | $ 288.9 | $ 251.0 | $ 846.1 | $ 750.4 |
Fuel and Purchased Power Expense | 88.9 | 80.5 | 268.7 | 245.7 |
Operating and Maintenance Expense | 105.7 | 102.7 | 340.6 | 311.2 |
Depreciation Expense | 33.5 | 29.4 | 99.5 | 86.3 |
Operating Income (Loss) | 60.8 | 38.4 | 137.3 | 107.2 |
Interest Expense | (13.2) | (12.7) | (39.5) | (37.8) |
Equity Earnings in ATC | 5.3 | 4.9 | 15.6 | 15.1 |
Other Income | 2.1 | 3.3 | 6.0 | 7.5 |
Income (Loss) Before Non-Controlling Interest and Income Taxes | 55.0 | 33.9 | 119.4 | 92.0 |
Income Tax Expense (Benefit) | 13.4 | 8.7 | 27.1 | 20.3 |
Net Income (Loss) | 41.6 | 25.2 | 92.3 | 71.7 |
Less: Non-Controlling Interest in Subsidiaries | 0 | 0 | 0.4 | 0 |
Net Income (Loss) Attributable to ALLETE | 41.6 | 25.2 | 91.9 | 71.7 |
Total Assets | 4,067.9 | 3,463.9 | 4,067.9 | 3,463.9 | 3,476.8
Property, Plant and Equipment - Net | 3,121.5 | 2,456.1 | 3,121.5 | 2,456.1 | 2,576.5
Accumulated Depreciation | 1,316.6 | 1,225.3 | 1,316.6 | 1,225.3 |
Capital Additions |  |  | 467.6 | 186.4 |
Regulated Operations [Member] |  |  |  |  |
Business Segments [Line Items] |  |  |  |  |
Operating Revenue | 255.8 | 226.4 | 749.6 | 683.6 |
Fuel and Purchased Power Expense | 88.9 | 80.5 | 268.7 | 245.7 |
Operating and Maintenance Expense | 79.4 | 78.6 | 258.6 | 243.6 |
Depreciation Expense | 28.5 | 27.9 | 86.9 | 81.8 |
Operating Income (Loss) | 59.0 | 39.4 | 135.4 | 112.5 |
Interest Expense | (11.8) | (10.4) | (34.7) | (31.5) |
Equity Earnings in ATC | 5.3 | 4.9 | 15.6 | 15.1 |
Other Income | 2.1 | 1.2 | 5.9 | 3.4 |
Income (Loss) Before Non-Controlling Interest and Income Taxes | 54.6 | 35.1 | 122.2 | 99.5 |
Income Tax Expense (Benefit) | 13.4 | 10.5 | 29.6 | 26.5 |
Net Income (Loss) | 41.2 | 24.6 | 92.6 | 73.0 |
Less: Non-Controlling Interest in Subsidiaries | 0 | 0 | 0 | 0 |
Net Income (Loss) Attributable to ALLETE | 41.2 | 24.6 | 92.6 | 73.0 |
Total Assets | 3,519.9 | 3,086.3 | 3,519.9 | 3,086.3 |
Property, Plant and Equipment - Net | 2,888.5 | 2,384.1 | 2,888.5 | 2,384.1 |
Accumulated Depreciation | 1,244.7 | 1,165.8 | 1,244.7 | 1,165.8 |
Capital Additions |  |  | 452.9 | 177.6 |
Investments and Other [Member] |  |  |  |  |
Business Segments [Line Items] |  |  |  |  |
Land in Minnesota (in acres) | 5,000 |  | 5,000 |  |
Operating Revenue | 33.1 | 24.6 | 96.5 | 66.8 |
Fuel and Purchased Power Expense | 0 | 0 | 0 | 0 |
Operating and Maintenance Expense | 26.3 | 24.1 | 82.0 | 67.6 |
Depreciation Expense | 5.0 | 1.5 | 12.6 | 4.5 |
Operating Income (Loss) | 1.8 | (1.0) | 1.9 | (5.3) |
Interest Expense | (1.4) | (2.3) | (4.8) | (6.3) |
Equity Earnings in ATC | 0 | 0 | 0 | 0 |
Other Income | 0 | 2.1 | 0.1 | 4.1 |
Income (Loss) Before Non-Controlling Interest and Income Taxes | 0.4 | (1.2) | (2.8) | (7.5) |
Income Tax Expense (Benefit) | 0 | (1.8) | (2.5) | (6.2) |
Net Income (Loss) | 0.4 | 0.6 | (0.3) | (1.3) |
Less: Non-Controlling Interest in Subsidiaries | 0 | 0 | 0.4 | 0 |
Net Income (Loss) Attributable to ALLETE | 0.4 | 0.6 | (0.7) | (1.3) |
Total Assets | 548.0 | 377.6 | 548.0 | 377.6 |
Property, Plant and Equipment - Net | 233.0 | 72.0 | 233.0 | 72.0 |
Accumulated Depreciation | 71.9 | 59.5 | 71.9 | 59.5 |
Capital Additions |  |  | $ 14.7 | $ 8.8 |

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