Consolidated Condensed Statements of Income (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Revenues
Regulated electric	$ 498.0	$ 531.7	$ 921.4	$ 981.4
Regulated gas	151.4	146.5	384.3	386.7
Unregulated	2.9	2.4	6.1	5.5
Total revenues	652.3	680.6	1,311.8	1,373.6
Expenses
Fuel	137.4	171.8	252.6	315.9
Purchased power	27.8	19.6	42.2	36.7
Cost of natural gas sold	50.8	49.1	147.6	152.1
Other	154.6	155.4	296.9	299.1
Operations and maintenance other expense	1.4	1.1	1.3	2.7
Merger transaction-related costs	71.4	0.0	71.5	0.0
Depreciation and amortization	90.2	87.0	180.0	172.5
Taxes, other than income	52.0	53.3	104.9	105.1
Total expenses	585.6	537.3	1,097.0	1,084.1
Income from operations	66.7	143.3	214.8	289.5
Other income
Allowance for other funds used during construction	5.9	3.7	11.6	7.5
Other income, net	1.0	1.4	2.5	3.0
Total other income	6.9	5.1	14.1	10.5
Interest charges
Interest expense	46.7	48.2	95.6	98.0
Allowance for borrowed funds used during construction	(2.9)	(1.8)	(5.9)	(3.7)
Total interest charges	43.8	46.4	89.7	94.3
Income from continuing operations before provision for income taxes	29.8	102.0	139.2	205.7
Provision for income taxes	24.3	40.5	60.0	80.4
Net income from continuing operations	5.5	61.5	79.2	125.3
Discontinued operations
Loss from discontinued operations	(0.4)	(78.1)	(0.2)	(87.7)
Benefit for income taxes	(0.2)	(28.4)	(0.1)	(32.2)
Loss from discontinued operations, net	(0.2)	(49.7)	(0.1)	(55.5)
Net income	$ 5.3	$ 11.8	$ 79.1	$ 69.8
Average common shares outstanding - Basic	234.3	233.0	234.1	232.9
Average common shares outstanding - Diluted	235.5	233.6	235.4	233.5
Earnings per share from continuing operations - Basic	$ 0.03	$ 0.26	$ 0.34	$ 0.53
Earnings per share from continuing operations - Diluted	0.03	0.26	0.34	0.53
Earnings per share from discontinued operations - Basic	0.00	(0.21)	0.00	(0.23)
Earnings per share from discontinued operations - Diluted	0.00	(0.21)	0.00	(0.23)
Earnings per share - Basic	0.03	0.05	0.34	0.30
Earnings per share - Diluted	0.03	0.05	0.34	0.30
Dividends paid per common share outstanding	$ 0.230	$ 0.225	$ 0.46	$ 0.45