STATEMENTS OF INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenues [Abstract]
Operating revenue	$ 2,152	$ 2,426	$ 2,465
Operating expenses
Electric fuel and purchased power	910	1,157	1,432
Operating and maintenance expenses	279	317	271
Demand side management program expenses	20	23	17
Depreciation and amortization	368	388	300
Taxes (other than income taxes)	100	107	79
Total operating expenses	1,686	1,992	2,099
Operating income	466	434	366
Other income (expense), net	2	0	1
Allowance for funds used during construction — equity	7	3	4
Interest charges and financing costs
Interest Expense	143	143	114
Allowance for funds used during construction — debt	(7)	(2)	(2)
Total interest charges and financing costs	136	141	112
Income before income taxes	339	296	259
Income taxes	(45)	(53)	(59)
Net income	384	349	318
Workforce Reduction Expense	$ 9	$ 0	$ 0