CONDENSED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 6.1	$ 17.1
Adjustments to reconcile net income to net cash provided from operating activities
Depreciation and amortization	76.7	73.8
Deferred income taxes and investment tax credits	2.3	9.0
Allowance for equity funds used during construction	(1.6)	(1.5)
Stock-based compensation expense	0.8	0.8
Regulatory assets	(2.3)	2.7
Regulatory liabilities	(4.6)	(0.7)
Other assets	1.5	0.1
Other liabilities	2.8	0.3
Change in certain current assets and liabilities
Accounts receivable, net	38.0	19.6
Accrued unbilled revenues	2.1	9.0
Fuel, materials and supplies inventories	10.1	(24.0)
Fuel clause under recoveries	0.0	41.3
Other current assets	(7.7)	2.9
Accounts payable	(33.6)	(4.9)
Accounts payable - affiliates	(0.5)	1.2
Income taxes payable - parent	(0.1)	(2.8)
Fuel clause over recoveries	2.0	0.0
Other current liabilities	(35.6)	(20.3)
Net Cash Provided from Operating Activities	56.4	123.6
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures (less allowance for equity funds used during construction)	(177.7)	(110.5)
Proceeds from sale of assets	0.0	0.1
Net Cash Used in Investing Activities	(177.7)	(110.4)
CASH FLOWS FROM FINANCING ACTIVITIES
Dividends paid on common stock	(30.0)	(30.0)
Changes in advances with parent	(261.3)	(16.8)
Payment of long-term debt	(110.0)	0.0
Net Cash Provided from (Used in) Financing Activities	121.3	(13.2)
NET CHANGE IN CASH AND CASH EQUIVALENTS	0.0	0.0
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	0.0	0.0
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$ 0.0	$ 0.0