CONDENSED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
OPERATING REVENUES	$ 551.4	$ 549.9	$ 984.5	$ 1,030.0
COST OF SALES	197.7	210.9	375.6	422.5
OPERATING EXPENSES
Other operation and maintenance	124.8	115.6	241.1	229.9
Depreciation and amortization	78.4	74.3	155.1	148.1
Taxes other than income	19.1	21.6	42.7	44.7
Total operating expenses	222.3	211.5	438.9	422.7
OPERATING INCOME	131.4	127.5	170.0	184.8
OTHER INCOME (EXPENSE)
Allowance for equity funds used during construction	3.7	1.7	5.3	3.2
Other income	4.4	3.3	8.4	5.0
Other expense	(1.1)	(0.6)	(1.4)	(0.9)
Net other income	7.0	4.4	12.3	7.3
INTEREST EXPENSE
Interest on long-term debt	35.4	36.7	70.9	73.4
Allowance for borrowed funds used during construction	(1.8)	(0.8)	(2.7)	(1.6)
Interest on short-term debt and other interest charges	1.4	1.4	2.3	2.3
Interest expense	35.0	37.3	70.5	74.1
INCOME BEFORE TAXES	103.4	94.6	111.8	118.0
INCOME TAX EXPENSE	31.1	25.6	33.4	31.9
NET INCOME	72.3	69.0	78.4	86.1
Other comprehensive income (loss), net of tax	0.0	0.0	0.0	0.0
COMPREHENSIVE INCOME	$ 72.3	$ 69.0	$ 78.4	$ 86.1