CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating revenues
Electric, non-affiliates	$ 925.6	$ 958.6
Electric, affiliates	109.6	120.1
Natural gas	206.1	264.0
Other	8.9	7.8
Total operating revenues	1,250.2	1,350.5
Operating expenses
Electric fuel and purchased power	363.6	391.9
Cost of natural gas sold and transported	125.5	174.4
Cost of sales — other	5.6	5.2
Operating and maintenance expenses	295.7	311.9
Conservation program expenses	31.4	32.5
Depreciation and amortization	202.1	197.7
Taxes (other than income taxes)	68.9	69.6
Total operating expenses	1,092.8	1,183.2
Operating income	157.4	167.3
Other (expense) income, net	(5.4)	1.5
Allowance for funds used during construction — equity	7.0	5.1
Interest charges and financing costs
Interest charges — includes other financing costs of $1.9 and $1.8, respectively	60.7	57.2
Allowance for funds used during construction — debt	(3.1)	(2.5)
Total interest charges and financing costs	57.6	54.7
Income before income taxes	101.4	119.2
Income tax (benefit) expense	(5.6)	6.0
Net income	$ 107.0	$ 113.2