CONSOLIDATED BALANCE SHEETS (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
CURRENT ASSETS
Cash and cash equivalents	$ 1.8	$ 4.6
Accounts receivable, less reserve of $2.6 and $3.8, respectively	295.3	322.5
Accrued unbilled revenues	57.4	59.3
Income taxes receivable	7.2	8.3
Fuel inventories	93.3	100.7
Materials and supplies, at average cost	80.9	87.2
Price risk management	0.5	3.5
Gas imbalances	9.0	1.8
Deferred income taxes	187.7	32.1
Fuel clause under recoveries	0	1.8
Assets held for sale	25.5	0
Other	35.6	30.9
Total current assets	794.2	652.7
OTHER PROPERTY AND INVESTMENTS, at cost	52.2	46.7
PROPERTY, PLANT AND EQUIPMENT
In service	11,504.4	10,315.9
Construction work in progress	387.5	499.0
Total property, plant and equipment	11,891.9	10,814.9
Less accumulated depreciation	3,547.1	3,340.9
Net property, plant and equipment	8,344.8	7,474.0
DEFERRED CHARGES AND OTHER ASSETS
Regulatory assets	510.6	507.9
Intangible assets, net	127.4	137.0
Goodwill	39.4	39.4
Price risk management	0	0.3
Other	53.6	48.0
Total deferred charges and other assets	731.0	732.6
TOTAL ASSETS	9,922.2	8,906.0
CURRENT LIABILITIES
Short-term debt	430.9	277.1
Accounts payable	396.7	388.0
Dividends payable	41.2	38.5
Customer deposits	70.3	67.6
Accrued taxes	48.1	42.3
Accrued interest	55.0	54.8
Accrued compensation	55.2	47.8
Price risk management	0.3	0.4
Gas imbalances	5.0	9.8
Fuel clause over recoveries	109.2	7.7
Other	64.5	64.5
Total current liabilities	1,276.4	998.5
LONG-TERM DEBT	2,848.6	2,737.1
DEFERRED CREDITS AND OTHER LIABILITIES
Accrued benefit obligations	399.8	360.8
Deferred income taxes	1,948.8	1,651.4
Deferred investment tax credits	3.9	6.1
Regulatory liabilities	245.1	230.7
Deferred revenues	37.7	40.8
Price risk management	0	0.1
Other	89.5	61.2
Total deferred credits and other liabilities	2,724.8	2,351.1
Total liabilities	6,849.8	6,086.7
COMMITMENTS AND CONTINGENCIES (NOTE 16)
STOCKHOLDERS' EQUITY
Common stockholders' equity	1,047.4	1,035.3
Retained earnings	1,772.4	1,574.8
Accumulated other comprehensive loss, net of tax	(49.1)	(40.6)
Treasury stock, at cost	(3.5)	(6.2)
Total OGE Energy stockholders' equity	2,767.2	2,563.3
Noncontrolling interests	305.2	256.0
Total stockholders' equity	3,072.4	2,819.3
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 9,922.2	$ 8,906.0