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CONSOLIDATED STATEMENTS OF EARNINGS - USD ($)
shares in Millions, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Operating Revenues        
Gas $ 27.6 $ 25.8 $ 127.9 $ 118.4
Electric 48.4 46.1 118.7 108.0
Other 1.5 1.4 3.1 3.0
Total Operating Revenues 77.5 73.3 249.7 229.4
Operating Expenses        
Cost of Gas Sales 9.5 9.5 71.0 65.6
Cost of Electric Sales 27.9 27.2 77.0 69.9
Operation and Maintenance 16.3 15.3 33.2 32.4
Depreciation and Amortization 11.3 10.2 22.7 20.4
Taxes Other Than Income Taxes 3.6 4.0 8.5 8.6
Total Operating Expenses 68.6 66.2 212.4 196.9
Operating Income 8.9 7.1 37.3 32.5
Interest Expense, net 6.0 5.3 11.8 10.5
Other Expense, net 0.1 0.1 0.2 0.2
Income Before Income Taxes 2.8 1.7 25.3 21.8
Income Tax Expense 1.1 0.6 10.0 8.1
Net Income $ 1.7 $ 1.1 $ 15.3 $ 13.7
Net Income Per Common Share (Basic and Diluted) $ 0.12 $ 0.08 $ 1.10 $ 0.99
Weighted Average Common Shares Outstanding - (Basic and Diluted) 13.9 13.8 13.9 13.8
Dividends Declared Per Share of Common Stock $ 0.350 $ 0.345 $ 0.700 $ 0.690