CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
CURRENT ASSETS
Cash and cash equivalents	$ 1.7	$ 4.6
Accounts receivable, less reserve of $1.5 and $3.8, respectively	302.6	322.5
Accrued unbilled revenues	84.6	59.3
Income taxes receivable	17.1	8.3
Fuel inventories	101.1	100.7
Materials and supplies, at average cost	90.4	87.2
Price risk management	0.9	3.5
Gas imbalances	10.1	1.8
Deferred income taxes	74.7	32.1
Fuel clause under recoveries	0.7	1.8
Other	43.9	30.9
Total current assets	727.8	652.7
OTHER PROPERTY AND INVESTMENTS, at cost	48.8	46.7
PROPERTY, PLANT AND EQUIPMENT
In service	10,956.3	10,315.9
Construction work in progress	363.1	499.0
Total property, plant and equipment	11,319.4	10,814.9
Less accumulated depreciation	3,455.7	3,340.9
Net property, plant and equipment	7,863.7	7,474.0
DEFERRED CHARGES AND OTHER ASSETS
Regulatory assets	494.1	507.9
Intangible assets, net	132.2	137.0
Goodwill	39.4	39.4
Price risk management	0.1	0.3
Other	45.3	48.0
Total deferred charges and other assets	711.1	732.6
TOTAL ASSETS	9,351.4	8,906.0
CURRENT LIABILITIES
Short-term debt	596.7	277.1
Accounts payable	274.5	388.0
Dividends payable	38.7	38.5
Customer deposits	69.4	67.6
Accrued taxes	45.7	42.3
Accrued interest	54.8	54.8
Accrued compensation	37.2	47.8
Price risk management	0.4	0.4
Gas imbalances	1.5	9.8
Fuel clause over recoveries	65.4	7.7
Other	84.5	64.5
Total current liabilities	1,268.8	998.5
LONG-TERM DEBT	2,737.5	2,737.1
DEFERRED CREDITS AND OTHER LIABILITIES
Accrued benefit obligations	334.1	360.8
Deferred income taxes	1,757.2	1,651.4
Deferred investment tax credits	5.0	6.1
Regulatory liabilities	242.5	230.7
Deferred revenues	40.5	40.8
Price risk management	0	0.1
Other	87.6	61.2
Total deferred credits and other liabilities	2,466.9	2,351.1
Total liabilities	6,473.2	6,086.7
COMMITMENTS AND CONTINGENCIES (NOTE 12)
STOCKHOLDERS' EQUITY
Common stockholders' equity	1,028.2	1,035.3
Retained earnings	1,628.4	1,574.8
Accumulated other comprehensive loss, net of tax	(41.5)	(40.6)
Treasury stock, at cost	(0.1)	(6.2)
Total OGE Energy stockholders' equity	2,615.0	2,563.3
Noncontrolling interests	263.2	256.0
Total stockholders' equity	2,878.2	2,819.3
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 9,351.4	$ 8,906.0