CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Operating revenues
Total operating revenues	$ 2,577	$ 2,658	$ 5,718	$ 5,609
Operating expenses
Cost of sales — other	10	8	19	17
Operating and maintenance expenses	586	578	1,184	1,135
Conservation and demand side management expenses	65	69	137	139
Depreciation and amortization	439	377	872	760
Taxes (other than income taxes)	142	137	292	282
Total operating expenses	2,167	2,208	4,822	4,679
Operating income	410	450	896	930
Interest charges and financing costs
Interest charges — includes other financing costs of $6, $6, $13 and $12, respectively	189	175	379	346
Allowance for funds used during construction — debt	(10)	(11)	(20)	(22)
Total interest charges and financing costs	$ 179	$ 164	$ 359	$ 324
Weighted average common shares outstanding:
Basic (in shares)	516	510	515	509
Diluted (in shares)	518	510	517	510
Earnings per average common share:
Basic (in dollars per share)	$ 0.46	$ 0.52	$ 1.07	$ 1.09
Diluted (in dollars per share)	$ 0.46	$ 0.52	$ 1.07	$ 1.09
Other income (expense)	$ 2	$ (2)	$ 6	$ (1)
Equity earnings of unconsolidated subsidiaries	9	9	19	16
Allowance for funds used during construction — equity	20	26	40	49
Income before income taxes	262	319	602	670
Income taxes	24	54	49	114
Net income	238	265	553	556
Electric
Operating revenues
Total operating revenues	2,249	2,348	4,574	4,617
Operating expenses
Cost of Goods Sold	813	935	1,727	1,867
Natural gas
Operating revenues
Total operating revenues	308	292	1,102	954
Operating expenses
Cost of Goods Sold	112	104	591	479
Other
Operating revenues
Total operating revenues	$ 20	$ 18	$ 42	$ 38