STATEMENTS OF INCOME (UNAUDITED) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Operating revenues
Operating revenues	$ 533.1	$ 540.1	$ 1,397.7	$ 1,468.6
Operating expenses
Electric fuel and purchased power	240.2	284.0	651.0	795.6
Operating and maintenance expenses	74.1	71.5	216.6	203.7
Demand side management expenses	4.5	4.6	12.9	13.5
Depreciation and amortization	61.3	52.2	172.3	150.2
Taxes (other than income taxes)	17.6	16.8	53.1	50.0
Total operating expenses	397.7	429.1	1,105.9	1,213.0
Operating income	135.4	111.0	291.8	255.6
Other income (expense), net	1.5	(1.0)	2.4	(2.4)
Allowance for funds used during construction — equity	3.2	5.0	22.2	11.6
Interest charges and financing costs
Interest charges — includes other financing costs of $0.9, $0.7, $2.5 and $2.1, respectively	26.0	21.0	76.0	61.8
Allowance for funds used during construction — debt	(1.5)	(2.2)	(10.2)	(5.5)
Total interest charges and financing costs	24.5	18.8	65.8	56.3
Income before income taxes	115.6	96.2	250.6	208.5
Income taxes	10.5	14.7	32.6	35.4
Net income	$ 105.1	$ 81.5	$ 218.0	$ 173.1