Consolidated Condensed Income Statements (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Operating Revenues	$ 937.8	$ 964.6	$ 3,070.2	$ 2,849.7
Operating Expenses
Fuel and purchased power	338.2	340.4	951.8	890.1
Cost of gas sold	27.7	24.4	327.8	184.1
Other operation and maintenance	315.8	338.0	972.2	1,023.1
Depreciation and amortization	74.9	69.5	220.9	207.4
Property and revenue taxes	28.5	27.7	85.4	83.1
Total Operating Expenses	785.1	800.0	2,558.1	2,387.8
Revenue from Grants	3.5	0	10.1	0
Operating Income	156.2	164.6	522.2	461.9
Equity in earnings of transmission affiliate	15.9	15.1	46.4	44.9
Other Income, net	1.4	4.6	8.0	14.1
Interest Expense, net	29.0	29.3	87.6	91.5
Income Before Income Taxes	144.5	155.0	489.0	429.4
Income Tax Expense	54.4	55.8	181.3	152.4
Net Income	90.1	99.2	307.7	277.0
Preferred Stock Dividend Requirement	0.3	0.3	0.9	0.9
Earnings Available for Common Stockholder	$ 89.8	$ 98.9	$ 306.8	$ 276.1