Consolidated Statements of Operations (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Operating revenue:
Electric	$ 179	$ 174	$ 356	$ 346
Natural gas	21	15	65	49
Total operating revenue	200	189	421	395
Operating costs and expenses:
Cost of fuel, energy and capacity	86	70	166	132
Natural gas purchased for resale	12	6	41	24
Operating and maintenance expense	39	48	73	96
Depreciation and amortization	26	27	52	52
Property and other taxes	6	7	12	13
Merger-related expenses	0	4	0	4
Total operating costs and expenses	169	162	344	321
Operating income	31	27	77	74
Other income (expense):
Interest expense, net of allowance for debt funds	(14)	(16)	(29)	(32)
Allowance for equity funds	1	0	2	1
Other, net	3	5	5	7
Total other income (expense)	(10)	(11)	(22)	(24)
Income before income tax expense	21	16	55	50
Income tax expense	7	5	19	17
Net income	$ 14	$ 11	$ 36	$ 33