Condensed Consolidated Statements of Income and Comprehensive Income (Unaudited) - USD ($) shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenue, net	$ 570	$ 495
Alternative revenue programs, net of amortization	3	(2)
Total Revenues	573	493
Operating expenses:
Purchased power and fuel	179	130
Generation, transmission and distribution	77	69
Administrative and other	71	69
Depreciation and amortization	101	92
Taxes other than income taxes	34	33
Total operating expenses	462	393
Income from operations	111	100
Interest expense, net	32	31
Other income:
Allowance for equity funds used during construction	3	4
Miscellaneous income (expense), net	2	(1)
Other income, net	5	3
Income before income tax expense	84	72
Income tax expense	11	8
Net income	73	64
Other Comprehensive Income	1	0
Comprehensive Income	$ 74	$ 64
Weighted-average common shares outstanding-basic and diluted (in thousands)	89,309	89,160
Earnings per share-basic and diluted	$ 0.82	$ 0.72