STATEMENTS OF CONSOLIDATED INCOME (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Revenues	$ 2,540	$ 2,337	$ 2,211
Operation and maintenance	958	917	849
Depreciation and amortization	729	587	582
Taxes other than income taxes	214	210	207
Total	1,901	1,714	1,638
Operating Income	639	623	573
Interest and other finance charges	(141)	(150)	(149)
Interest on transition and system restoration bonds	(147)	(127)	(140)
Return on true-up balance	0	352	0
Other, net	41	38	32
Total	(247)	113	(257)
Income Before Income Taxes and Extraordinary Item	392	736	316
Income Tax Expense	113	248	116
Income Before Extraordinary Item	279	488	200
Extraordinary Item, net of tax	0	598	0
Net Income	$ 279	$ 1,086	$ 200