Statements Of Consolidated Income (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net Revenues
Gas Distribution	$ 226.3	$ 326.7	$ 1,382.6	$ 2,199.1
Gas Transportation and Storage	278.3	283.3	1,043.7	993.6
Electric	418.0	404.7	1,147.7	1,100.4
Other	50.9	54.0	106.9	235.5
Gross Revenues	973.5	1,068.7	3,680.9	4,528.6
Cost of Sales (excluding depreciation and amortization)	233.7	323.1	1,105.1	1,956.5
Total Net Revenues	739.8	745.6	2,575.8	2,572.1
Operating Expenses
Operation and maintenance	422.9	407.2	1,222.6	1,236.8
Depreciation and amortization	126.0	134.9	420.1	403.7
Impairment and (gain)/loss on sale of assets, net	(0.7)	0.4	(3.8)	1.1
Other taxes	62.4	59.2	215.9	220.0
Total Operating Expenses	610.6	601.7	1,854.8	1,861.6
Equity Earnings in Unconsolidated Affiliates	8.0	3.5	24.2	8.8
Operating Income	137.2	147.4	745.2	719.3
Other Income (Deductions)
Interest expense, net	(107.9)	(95.7)	(314.4)	(279.9)
Other, net	(2.2)	(1.6)	(5.3)	(5.5)
Total Other Deductions	(105.7)	(94.1)	(309.1)	(274.4)
Income from Continuing Operations before Income Taxes	31.5	53.3	436.1	444.9
Income Taxes	11.5	17.0	152.1	158.7
Income from Continuing Operations	20.0	36.3	284.0	286.2
Loss from Discontinued Operations - net of taxes	(0.7)	(1.6)	(1.9)	(1.8)
Net Income	$ 19.3	$ 34.7	$ 282.1	$ 284.4
Basic Earnings (Loss) Per Share ($)
Continuing Operations	$ 0.06	$ 0.13	$ 0.99	$ 1.02
Discontinued operations	$ 0.00	$ (0.01)	$ 0.00	$ (0.01)
Basic Earnings Per Share	$ 0.06	$ 0.12	$ 0.99	$ 1.01
Diluted Earnings (Loss) Per Share ($)
Continuing operations	$ 0.06	$ 0.13	$ 0.95	$ 1.00
Discontinued operations	$ 0.00	$ (0.01)	$ 0.00	$ (0.01)
Earnings Per Share, Diluted	$ 0.06	$ 0.12	$ 0.95	$ 0.99
Dividends Declared Per Common Share	$ 0.24	$ 0.23	$ 0.94	$ 0.92
Weighted Average Number of Shares Outstanding, Basic	290,328	280,765	285,891	280,112
Weighted Average Number of Shares Outstanding, Diluted	300,012	289,010	296,678	287,355