CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Operating revenues
Electric	$ 827	$ 715	$ 1,560	$ 1,427
Natural gas	338	186	753	518
Other	9	10	22	23
Total operating revenues	1,174	911	2,335	1,968
Operating expenses
Electric fuel and purchased power	328	258	599	529
Cost of natural gas sold and transported	168	50	338	187
Cost of sales — other	3	3	6	6
Operating and maintenance expenses	205	189	412	394
Demand side management expenses	32	37	64	71
Depreciation and amortization	185	158	368	315
Taxes (other than income taxes)	64	55	130	109
Total operating expenses	985	750	1,917	1,611
Operating income	189	161	418	357
Other income, net	1	2	3	0
Allowance for funds used during construction — equity	7	11	12	20
Interest charges and financing costs
Interest charges — includes other financing costs of $2, $2, $4 and $4, respectively	62	63	121	123
Allowance for funds used during construction — debt	(2)	(5)	(3)	(8)
Total interest charges and financing costs	60	58	118	115
Income before income taxes	137	116	315	262
Income tax expense	3	8	14	25
Net income	$ 134	$ 108	$ 301	$ 237