CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Operating revenues
Electric, non-affiliates	$ 1,125	$ 1,024
Electric, affiliates	129	115
Natural gas	434	204
Other	10	9
Total operating revenues	1,698	1,352
Operating expenses
Electric fuel and purchased power	529	433
Cost of natural gas sold and transported	336	125
Cost of sales — other	5	5
Operating and maintenance expenses	306	298
Conservation program expenses	49	34
Depreciation and amortization	252	221
Taxes (other than income taxes)	73	69
Total operating expenses	1,550	1,185
Operating income	148	167
Other income, net	0	2
Allowance for funds used during construction — equity	6	7
Interest charges and financing costs
Interest charges — includes other financing costs of $2 and $2, respectively	69	63
Allowance for funds used during construction — debt	(2)	(3)
Total interest charges and financing costs	67	60
Income before income taxes	87	116
Income tax benefit	(40)	(12)
Net income	$ 127	$ 128