Consolidated Condensed Statements of Income (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Revenues
Regulated electric and gas	$ 689.9	$ 575.7
Unregulated	3.1	2.3
Total revenues	693.0	578.0
Expenses
Fuel	144.1	149.6
Purchased power	17.1	18.2
Cost of natural gas sold	103.0	47.1
Other	143.7	120.6
Operations and maintenance other expense	1.6	3.2
Depreciation and amortization	85.5	75.9
Taxes, other than income	51.8	47.8
Total expenses	546.8	462.4
Income from continuing operations	146.2	115.6
Other income
Allowance for other funds used during construction	3.8	2.4
Other income	1.6	(0.9)
Total other income	5.4	1.5
Interest charges
Interest expense	49.8	41.0
Allowance for borrowed funds used during construction	(1.9)	(1.4)
Total interest charges	47.9	39.6
Income from continuing operations before provision for income taxes	103.7	77.5
Provision for income taxes	39.9	29.1
Net income from continuing operations	63.8	48.4
Discontinued operations
Income (loss) from discontinued operations	(9.6)	1.2
Benefit from income taxes	(3.8)	(0.5)
Income (loss) on discontinued operations, net	(5.8)	1.7
Net income	$ 58.0	$ 50.1
Average common shares outstanding - Basic	232.8	215.2
Average common shares outstanding - Diluted	233.5	215.7
Earnings per share from continuing operations - Basic	$ 0.27	$ 0.22
Earnings per share from continuing operations - Diluted	$ 0.27	$ 0.22
Earnings per share from discontinued operations - Basic	$ (0.02)	$ 0.01
Earnings per share from discontinued operations - Diluted	$ (0.02)	$ 0.01
Earnings per share - Basic	$ 0.25	$ 0.23
Earnings per share - Diluted	$ 0.25	$ 0.23
Dividends paid per common share outstanding	$ 0.225	$ 0.220