Consolidated Statements of Operations (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Operating Revenues	$ 1,542	$ 1,517	$ 4,029	$ 3,949
Operating Expenses
Fuel and purchased power	543	553	1,348	1,348
Operation and maintenance	337	352	1,026	1,012
Depreciation and amortization	219	215	607	619
Taxes other than income	65	63	193	182
Asset (gains) and losses, net	0	(1)	(1)	13
Total operating expenses	1,164	1,182	3,173	3,174
Operating Income	378	335	856	775
Other (Income) and Deductions
Interest expense	70	74	204	218
Other income	(14)	(9)	(41)	(30)
Other expenses	12	14	27	26
Total Other (Income) and Deductions	68	79	190	214
Income Before Income Taxes	310	256	666	561
Income Tax Expense	115	98	247	214
Net Income	$ 195	$ 158	$ 419	$ 347