CONDENSED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
OPERATING REVENUES	$ 743.9	$ 719.8	$ 1,728.4	$ 1,749.8
COST OF SALES	269.8	259.8	645.4	682.3
OPERATING EXPENSES
Other operation and maintenance	115.2	107.4	356.3	337.3
Depreciation and amortization	80.8	75.9	235.9	224.0
Taxes other than income	20.9	21.0	63.6	65.7
Total operating expenses	216.9	204.3	655.8	627.0
OPERATING INCOME	257.2	255.7	427.2	440.5
OTHER INCOME (EXPENSE)
Allowance for equity funds used during construction	3.9	2.2	9.2	5.4
Other income	2.9	4.8	11.3	9.8
Other expense	(0.8)	(0.4)	(2.2)	(1.3)
Net other income	6.0	6.6	18.3	13.9
INTEREST EXPENSE
Interest on long-term debt	35.4	36.7	106.3	110.1
Allowance for borrowed funds used during construction	(2.0)	(1.1)	(4.7)	(2.7)
Interest on short-term debt and other interest charges	0.9	0.8	3.2	3.1
Interest expense	34.3	36.4	104.8	110.5
INCOME BEFORE TAXES	228.9	225.9	340.7	343.9
INCOME TAX EXPENSE	69.0	63.0	102.4	94.9
NET INCOME	159.9	162.9	238.3	249.0
Other comprehensive income (loss), net of tax	0.0	0.0	0.0	0.0
COMPREHENSIVE INCOME	$ 159.9	$ 162.9	$ 238.3	$ 249.0