CONDENSED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
OPERATING REVENUES	$ 719.8	$ 754.7	$ 1,749.8	$ 1,926.9
COST OF SALES	259.8	305.3	682.3	869.6
OPERATING EXPENSES
Other operation and maintenance	107.4	111.0	337.3	343.1
Depreciation and amortization	75.9	69.4	224.0	198.7
Taxes other than income	21.0	20.6	65.7	63.1
Total operating expenses	204.3	201.0	627.0	604.9
OPERATING INCOME	255.7	248.4	440.5	452.4
OTHER INCOME (EXPENSE)
Allowance for equity funds used during construction	2.2	1.1	5.4	3.0
Other income	4.8	2.4	9.8	3.0
Other expense	(0.4)	(0.6)	(1.3)	(1.5)
Net other income	6.6	2.9	13.9	4.5
INTEREST EXPENSE
Interest on long-term debt	36.7	34.9	110.1	105.0
Allowance for borrowed funds used during construction	(1.1)	(0.6)	(2.7)	(1.7)
Interest on short-term debt and other interest charges	0.8	1.0	3.1	3.4
Interest expense	36.4	35.3	110.5	106.7
INCOME BEFORE TAXES	225.9	216.0	343.9	350.2
INCOME TAX EXPENSE	63.0	58.7	94.9	95.3
NET INCOME	162.9	157.3	249.0	254.9
Other comprehensive income (loss), net of tax	0.0	0.0	0.0	0.0
COMPREHENSIVE INCOME	$ 162.9	$ 157.3	$ 249.0	$ 254.9