Consolidated Statements of Income - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues, net	$ 2,121	$ 1,988	$ 2,009
Alternative revenue programs, net of amortization	2	3	0
Total Revenues	2,123	1,991	2,009
Operating expenses:
Purchased power and fuel	614	571	592
Generation, transmission and distribution	323	292	309
Administrative and other	290	271	260
Depreciation and amortization	409	382	345
Taxes other than income taxes	134	129	123
Total operating expenses	1,770	1,645	1,629
Income from operations	353	346	380
Interest expense, net	128	124	120
Other income:
Allowance for equity funds used during construction	10	11	12
Miscellaneous income, net	6	(4)	1
Other income, net	16	7	13
Income before income taxes	241	229	273
Income tax expense	27	17	86
Net income	$ 214	$ 212	$ 187
Weighted-average shares outstanding (in thousands):
Basic	89,353	89,215	89,056
Diluted	89,559	89,347	89,176
Earnings per share:
Basic	$ 2.39	$ 2.38	$ 2.10
Diluted	$ 2.39	$ 2.37	$ 2.10