Condensed Consolidated Statements of Income and Comprehensive Income (Unaudited) - USD ($) shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Revenues, net	$ 487	$ 473
Operating expenses:
Purchased power and fuel	149	161
Generation, transmission and distribution	66	62
Administrative and other	61	60
Depreciation and amortization	82	75
Taxes other than income taxes	30	30
Total operating expenses	388	388
Income from operations	99	85
Interest expense, net	27	30
Other income:
Allowance for equity funds used during construction	7	4
Miscellaneous income (expense), net	(1)	1
Other income, net	6	5
Income before income tax expense	78	60
Income tax expense	17	10
Net income and Comprehensive income	$ 61	$ 50
Weighted-average shares outstanding (in thousands):
Basic	88,833	78,271
Diluted	88,833	81,466
Earnings per share:
Basic	$ 0.68	$ 0.64
Diluted	0.68	0.62
Dividends declared per common share	$ 0.30	$ 0.28