CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues from contracts with customers	$ 501.1	$ 547.7	$ 978.5	$ 1,025.6
Other revenues	12.6	19.3	25.2	34.1
Operating revenues	513.7	567.0	1,003.7	1,059.7
COST OF SALES	178.7	208.7	391.3	419.2
OPERATING EXPENSES
Other operation and maintenance	119.8	117.2	238.8	229.9
Depreciation and amortization	84.3	80.9	166.7	159.7
Taxes other than income	20.9	22.5	47.2	46.6
Operating expenses	225.0	220.6	452.7	436.2
OPERATING INCOME	110.0	137.7	159.7	204.3
OTHER INCOME (EXPENSE)
Equity in earnings of unconsolidated affiliates	35.8	29.3	66.5	63.2
Allowance for equity funds used during construction	1.2	6.3	2.7	13.3
Other net periodic benefit expense	(0.3)	(5.2)	(7.3)	(10.0)
Other income	5.0	4.7	11.7	10.1
Other expense	(4.4)	(3.3)	(10.1)	(7.7)
Net other income	37.3	31.8	63.5	68.9
INTEREST EXPENSE
Interest on long-term debt	31.8	39.7	64.4	79.3
Allowance for borrowed funds used during construction	(0.6)	(2.8)	(1.6)	(6.5)
Interest on short-term debt and other interest charges	4.7	4.0	7.7	6.7
Interest expense	35.9	40.9	70.5	79.5
INCOME BEFORE TAXES	111.4	128.6	152.7	193.7
INCOME TAX EXPENSE	11.2	17.9	5.4	28.0
NET INCOME	$ 100.2	$ 110.7	$ 147.3	$ 165.7
BASIC AVERAGE COMMON SHARES OUTSTANDING	200.2	199.7	200.1	199.7
DILUTED AVERAGE COMMON SHARES OUTSTANDING	200.6	200.5	200.5	200.3
BASIC EARNINGS PER AVERAGE COMMON SHARE	$ 0.50	$ 0.55	$ 0.74	$ 0.83
DILUTED EARNINGS PER AVERAGE COMMON SHARE	$ 0.50	$ 0.55	$ 0.73	$ 0.83