Consolidated Statements of Operations (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Operating Revenues	$ 1,289	$ 1,240	$ 2,487	$ 2,432
Operating Expenses
Fuel and purchased power	428	417	805	795
Operation and maintenance	334	331	689	660
Depreciation and amortization	203	202	388	404
Taxes other than income	60	60	128	119
Asset (gains) and losses, net	(1)	(5)	(1)	14
Total operating expenses	1,024	1,005	2,009	1,992
Operating Income	265	235	478	440
Other (Income) and Deductions
Interest expense	65	73	134	144
Other income	(11)	(11)	(27)	(21)
Other expenses	9	6	15	12
Total Other (Income) and Deductions	63	68	122	135
Income Before Income Taxes	202	167	356	305
Income Tax Expense	75	63	132	116
Net Income	$ 127	$ 104	$ 224	$ 189