CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating revenues
Electric	$ 3,731	$ 3,795	$ 3,413
Natural gas	1,734	1,860	1,355
Other	54	53	47
Total operating revenues	5,519	5,708	4,815
Operating expenses
Electric fuel and purchased power	1,364	1,485	1,336
Cost of natural gas sold and transported	910	1,053	606
Cost of sales — steam and other	17	18	15
Operating and maintenance expenses	865	905	831
Demand side management expenses	135	133	132
Depreciation and amortization	924	848	744
Taxes (other than income taxes)	287	272	256
Gain (Loss) Related to Litigation Settlement	(35)	0	0
Workforce Reduction Expense	20	0	0
Total operating expenses	4,557	4,714	3,920
Operating income	962	994	895
Other income (expense), net	15	(2)	4
Allowance for funds used during construction — equity	39	32	28
Interest charges and financing costs
Interest charges — includes other financing costs of $8, $8 and $8, respectively	(312)	(271)	(243)
Allowance for funds used during construction — debt	(20)	(11)	(9)
Total interest charges and financing costs	292	260	234
Income before income taxes	724	764	693
Income tax expense	29	37	33
Net income	$ 695	$ 727	$ 660