Consolidated Condensed Statements of Income (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Revenues
Regulated electric and gas	$ 690.8	$ 685.1	$ 2,058.9	$ 1,864.4
Unregulated	3.0	2.1	8.5	6.5
Total revenues	693.8	687.2	2,067.4	1,870.9
Expenses
Fuel	176.6	204.5	492.5	523.8
Purchased power	23.8	21.0	60.5	59.1
Cost of natural gas sold	42.0	34.3	194.1	110.5
Other	149.4	137.9	448.5	385.3
Operations and maintenance other expense	16.1	14.8	18.8	22.6
Depreciation and amortization	87.8	78.6	260.3	230.0
Taxes, other than income	51.5	50.4	156.6	146.3
Total expenses	547.2	541.5	1,631.3	1,477.6
Income from operations	146.6	145.7	436.1	393.3
Other income
Allowance for other funds used during construction	4.7	2.9	12.2	7.3
Other income, net	1.4	1.0	4.4	(0.4)
Total other income	6.1	3.9	16.6	6.9
Interest charges
Interest expense	48.4	44.4	146.4	126.8
Allowance for borrowed funds used during construction	(2.3)	(1.5)	(6.0)	(3.6)
Total interest charges	46.1	42.9	140.4	123.2
Income from continuing operations before provision for income taxes	106.6	106.7	312.3	277.0
Provision for income taxes	41.7	33.7	122.1	98.0
Net income from continuing operations	64.9	73.0	190.2	179.0
Discontinued operations
Loss from discontinued operations	(17.8)	(98.8)	(105.5)	(97.6)
Benefit from income taxes	(6.1)	(36.9)	(38.3)	(38.2)
Loss on discontinued operations, net	(11.7)	(61.9)	(67.2)	(59.4)
Net income	$ 53.2	$ 11.1	$ 123.0	$ 119.6
Average common shares outstanding - Basic	233.2	227.8	233.0	220.3
Average common shares outstanding - Diluted	234.7	228.3	234.4	220.8
Earnings per share from continuing operations - Basic	$ 0.28	$ 0.32	$ 0.81	$ 0.81
Earnings per share from continuing operations - Diluted	0.28	0.32	0.81	0.81
Earnings per share from discontinued operations - Basic	(0.05)	(0.28)	(0.28)	(0.27)
Earnings per share from discontinued operations - Diluted	(0.05)	(0.28)	(0.28)	(0.27)
Earnings per share - Basic	0.23	0.04	0.53	0.54
Earnings per share - Diluted	0.23	0.04	0.53	0.54
Dividends paid per common share outstanding	$ 0.225	$ 0.220	$ 0.675	$ 0.66