CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenues from contracts with customers	$ 684.5	$ 0.0	$ 1,710.1	$ 0.0
Other revenues	14.3	0.0	48.4	0.0
Operating revenues	698.8	716.8	1,758.5	1,759.2
COST OF SALES	244.4	255.7	663.6	696.5
OPERATING EXPENSES
Other operation and maintenance	123.3	111.9	353.2	340.9
Depreciation and amortization	81.1	76.9	240.8	207.2
Taxes other than income	22.7	23.2	69.3	68.4
Operating expenses	227.1	212.0	663.3	616.5
OPERATING INCOME	227.3	249.1	431.6	446.2
OTHER INCOME (EXPENSE)
Equity in earnings of unconsolidated affiliates	40.1	33.6	103.3	98.6
Allowance for equity funds used during construction	6.7	11.8	20.0	27.2
Other net periodic benefit income (expense)	(0.7)	(5.8)	(10.7)	(15.6)
Other income	4.1	15.0	14.2	34.1
Other expense	(3.4)	(2.0)	(11.1)	(9.3)
Net other income	46.8	52.6	115.7	135.0
INTEREST EXPENSE
Interest on long-term debt	40.2	38.7	119.5	113.8
Allowance for borrowed funds used during construction	(3.3)	(5.2)	(9.8)	(12.6)
Interest on short-term debt and other interest charges	1.8	2.4	8.5	6.8
Interest expense	38.7	35.9	118.2	108.0
INCOME BEFORE TAXES	235.4	265.8	429.1	473.2
INCOME TAX EXPENSE	30.3	82.4	58.3	149.0
NET INCOME	$ 205.1	$ 183.4	$ 370.8	$ 324.2
BASIC AVERAGE COMMON SHARES OUTSTANDING	199.7	199.7	199.7	199.7
DILUTED AVERAGE COMMON SHARES OUTSTANDING	200.6	200.1	200.4	200.0
BASIC EARNINGS PER AVERAGE COMMON SHARE	$ 1.03	$ 0.92	$ 1.86	$ 1.62
DILUTED EARNINGS PER AVERAGE COMMON SHARE	1.02	0.92	1.85	1.62
DIVIDENDS DECLARED PER COMMON SHARE	$ 0.36500	$ 0.33250	$ 1.03000	$ 0.93750