CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenues from contracts with customers	$ 477.4	$ 477.9
Other revenues	12.6	14.8
Operating revenues	490.0	492.7
COST OF SALES	212.6	210.5
OPERATING EXPENSES
Other operation and maintenance	119.0	112.7
Depreciation and amortization	82.4	78.8
Taxes other than income	26.3	24.1
Operating expenses	227.7	215.6
OPERATING INCOME	49.7	66.6
OTHER INCOME (EXPENSE)
Equity in earnings of unconsolidated affiliates	30.7	33.9
Allowance for equity funds used during construction	1.5	7.0
Other net periodic benefit expense	(7.0)	(4.8)
Other income	6.7	5.4
Other expense	(5.7)	(4.4)
Net other income	26.2	37.1
INTEREST EXPENSE
Interest on long-term debt	32.6	39.6
Allowance for borrowed funds used during construction	(1.0)	(3.7)
Interest on short-term debt and other interest charges	3.0	2.7
Interest expense	34.6	38.6
INCOME BEFORE TAXES	41.3	65.1
INCOME TAX (BENEFIT) EXPENSE	(5.8)	10.1
NET INCOME	$ 47.1	$ 55.0
BASIC AVERAGE COMMON SHARES OUTSTANDING	199.9	199.7
DILUTED AVERAGE COMMON SHARES OUTSTANDING	200.5	200.2
BASIC EARNINGS PER AVERAGE COMMON SHARE	$ 0.24	$ 0.28
DILUTED EARNINGS PER AVERAGE COMMON SHARE	$ 0.24	$ 0.27