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v3.10.0.1

Consolidated Statement of Income - USD ($) shares in Millions, $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Operating Revenue [Abstract] |  |  |  |
Contracts with Customers – Utility | $ 261.3 | $ 277.6 | $ 789.3 | $ 824.1
Contracts with Customers – Non-utility | 80.7 | 79.0 | 243.1 | 239.6
Other – Non-utility | 6.0 | 5.9 | 17.9 | 17.7
Total Operating Revenue | 348.0 | 362.5 | 1,050.3 | 1,081.4
Operating Expenses [Abstract] |  |  |  |
Fuel, Purchased Power and Gas – Utility | 103.2 | 93.5 | 300.6 | 283.2
Transmission Services – Utility | 17.9 | 18.9 | 53.1 | 53.1
Cost of Sales – Non-utility | 38.7 | 36.0 | 108.6 | 105.9
Operating and Maintenance | 80.3 | 81.1 | 253.6 | 251.4
Depreciation and Amortization | 51.5 | 50.9 | 153.4 | 151.5
Taxes Other than Income Taxes | 13.1 | 14.1 | 43.8 | 42.7
Total Operating Expenses | 304.7 | 294.5 | 913.1 | 887.8
Operating Income | 43.3 | 68.0 | 137.2 | 193.6
Other Income (Expense) [Abstract] |  |  |  |
Interest Expense | (17.6) | (16.6) | (51.6) | (50.5)
Equity Earnings in ATC | 4.0 | 5.9 | 13.0 | 17.3
Other | 1.4 | 1.8 | 5.7 | 5.0
Total Other Expense | (12.2) | (8.9) | (32.9) | (28.2)
Income Before Income Taxes | 31.1 | 59.1 | 104.3 | 165.4
Income Tax Expense (Benefit) | 0.4 | 14.2 | (8.7) | 34.6
Net Income | $ 30.7 | $ 44.9 | $ 113.0 | $ 130.8
Average Shares of Common Stock [Abstract] |  |  |  |
Basic (Shares) | 51.4 | 51.0 | 51.3 | 50.7
Diluted (Shares) | 51.6 | 51.2 | 51.5 | 50.9
Basic Earnings Per Share of Common Stock | $ 0.59 | $ 0.88 | $ 2.20 | $ 2.58
Diluted Earnings Per Share of Common Stock | 0.59 | 0.88 | 2.19 | 2.57
Dividends Per Share of Common Stock | $ 0.56 | $ 0.535 | $ 1.68 | $ 1.605

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