CONDENSED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 85.5	$ 85.0
Adjustments to reconcile net income to net cash provided from operating activities
Depreciation and amortization	122.4	103.9
Deferred income taxes and investment tax credits, net	37.3	36.1
Allowance for equity funds used during construction	(3.6)	(10.2)
Stock-based compensation expense	1.2	1.6
Regulatory assets	10.3	6.8
Regulatory liabilities	(7.6)	3.3
Other assets	1.9	2.9
Other liabilities	(32.9)	(45.2)
Change in certain current assets and liabilities
Accounts receivable, net	(13.4)	(40.2)
Accrued unbilled revenues	(25.3)	(39.8)
Fuel, materials and supplies inventories	(9.1)	29.3
Gas imbalance assets	(0.3)	0
Fuel clause under recoveries	1.1	(21.4)
Other current assets	(12.9)	2.0
Accounts payable	(28.5)	(7.9)
Accounts payable - affiliates	0.3	1.5
Income taxes payable - parent	(9.0)	0
Fuel clause over recoveries	57.7	(20.6)
Other current liabilities	16.0	28.9
Net Cash Provided from Operating Activities	191.1	116.0
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures (less allowance for equity funds used during construction)	(343.3)	(393.0)
Reimbursement of capital expenditures	23.4	21.6
Proceeds from sale of assets	0.4	0.4
Net Cash Used in Investing Activities	(319.5)	(371.0)
CASH FLOWS FROM FINANCING ACTIVITIES
Changes in advances with parent	128.4	(41.3)
Proceeds from long-term debt	0	246.3
Capital contribution from OGE Energy	0	50.0
Net Cash Provided from Financing Activities	128.4	255.0
NET CHANGE IN CASH AND CASH EQUIVALENTS	0	0
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	0	0
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$ 0	$ 0