CONDENSED STATEMENTS OF INCOME - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
OPERATING REVENUES	$ 433.1	$ 480.1
COST OF SALES	177.9	211.6
OPERATING EXPENSES
Other operation and maintenance	116.3	114.3
Depreciation and amortization	76.7	73.8
Taxes other than income	23.6	23.1
Total operating expenses	216.6	211.2
OPERATING INCOME	38.6	57.3
OTHER INCOME (EXPENSE)
Allowance for equity funds used during construction	1.6	1.5
Other income	4.0	1.7
Other expense	(0.3)	(0.3)
Net other income	5.3	2.9
INTEREST EXPENSE
Interest on long-term debt	35.5	36.7
Allowance for borrowed funds used during construction	(0.9)	(0.8)
Interest on short-term debt and other interest charges	0.9	0.9
Interest expense	35.5	36.8
INCOME BEFORE TAXES	8.4	23.4
INCOME TAX EXPENSE	2.3	6.3
NET INCOME	6.1	17.1
Other comprehensive income (loss), net of tax	0.0	0.0
COMPREHENSIVE INCOME	$ 6.1	$ 17.1