Consolidated Statements of Operations Statement (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Operating revenue	$ 1,243	$ 1,215	$ 2,531	$ 2,447
Operating costs and expenses:
Energy costs	444	428	948	881
Operations and maintenance	241	267	514	538
Depreciation and amortization	177	169	356	337
Taxes, other than income taxes	40	40	82	83
Total operating costs and expenses	902	904	1,900	1,839
Operating income	341	311	631	608
Other income (expense):
Interest expense	(97)	(96)	(191)	(190)
Allowance for borrowed funds	7	7	15	15
Allowance for equity funds	14	14	30	29
Other, net	3	1	5	2
Total other income (expense)	(73)	(74)	(141)	(144)
Income before income tax expense	268	237	490	464
Income tax expense	84	71	151	138
Net income	$ 184	$ 166	$ 339	$ 326