CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Operating revenues
Electric	$ 915.9	$ 880.7	$ 2,343.1	$ 2,314.8
Natural gas	156.4	153.9	674.1	830.7
Other	8.8	9.7	31.7	31.8
Total operating revenues	1,081.1	1,044.3	3,048.9	3,177.3
Operating expenses
Electric fuel and purchased power	299.1	284.7	828.3	829.5
Cost of natural gas sold and transported	34.7	34.3	222.1	376.7
Cost of sales — steam and other	3.7	3.5	9.7	11.9
Operating and maintenance expenses	195.9	198.4	589.7	597.9
Demand side management expenses	35.6	36.6	107.3	100.9
Depreciation and amortization	164.4	153.5	478.9	448.6
Taxes (other than income taxes)	57.9	49.0	166.5	154.8
Total operating expenses	791.3	760.0	2,402.5	2,520.3
Operating income	289.8	284.3	646.4	657.0
Other (expense) income, net	(0.6)	1.4	(0.8)	1.9
Allowance for funds used during construction — equity	9.5	3.8	29.5	12.9
Interest charges and financing costs
Interest charges — includes other financing costs of $1.9, $1.6, $5.4 and $4.9, respectively	60.3	59.2	183.3	176.3
Debt Related Commitment Fees and Debt Issuance Costs	1.9	1.6	5.4	4.9
Allowance for funds used during construction — debt	(4.0)	(2.2)	(12.5)	(7.0)
Total interest charges and financing costs	56.3	57.0	170.8	169.3
Income before income taxes	242.4	232.5	504.3	502.5
Income tax expense	24.0	28.0	49.1	57.7
Net income	$ 218.4	$ 204.5	$ 455.2	$ 444.8