CONSOLIDATED BALANCE SHEETS - USD ($)	Dec. 31, 2022	Dec. 31, 2021
CURRENT ASSETS
Cash and cash equivalents	$ 88,100,000	$ 0
Accounts receivable	250,100,000	162,300,000
Accrued unbilled revenues	74,200,000	65,000,000.0
Income taxes receivable	20,700,000	2,600,000
Fuel inventories	108,800,000	40,600,000
Materials and supplies, at average cost	180,500,000	117,900,000
Fuel clause under recoveries	514,900,000	151,900,000
Other	103,500,000	73,300,000
Total current assets	1,340,800,000	613,600,000
OTHER PROPERTY AND INVESTMENTS
Equity securities investment in Energy Transfer	0	785,100,000
Other	105,800,000	120,000,000.0
Total other property and investments	105,800,000	905,100,000
PROPERTY, PLANT AND EQUIPMENT
In service	14,695,200,000	13,899,800,000
Construction work in progress	436,100,000	252,000,000.0
Total property, plant and equipment	15,131,300,000	14,151,800,000
Less: accumulated depreciation	4,584,500,000	4,318,900,000
Net property, plant and equipment	10,546,800,000	9,832,900,000
DEFERRED CHARGES AND OTHER ASSETS
Regulatory assets	524,300,000	1,230,800,000
Other	27,000,000.0	24,000,000.0
Total deferred charges and other assets	551,300,000	1,254,800,000
TOTAL ASSETS	12,544,700,000	12,606,400,000
CURRENT LIABILITIES
Short-term debt	0	486,900,000
Accounts payable	448,900,000	274,000,000.0
Dividends payable	82,900,000	82,100,000
Customer deposits	88,800,000	81,100,000
Accrued taxes	54,000,000.0	52,900,000
Accrued interest	41,100,000	40,800,000
Accrued compensation	37,000,000.0	37,700,000
Long-term debt due within one year	999,900,000	0
Other	49,600,000	34,100,000
Total current liabilities	1,802,200,000	1,089,600,000
LONG-TERM DEBT	3,548,700,000	4,496,400,000
DEFERRED CREDITS AND OTHER LIABILITIES
Accrued benefit obligations	176,900,000	159,800,000
Deferred income taxes	1,233,500,000	1,333,300,000
Deferred investment tax credits	12,000,000.0	12,800,000
Regulatory liabilities	1,147,100,000	1,231,100,000
Other	210,900,000	227,100,000
Total deferred credits and other liabilities	2,780,400,000	2,964,100,000
Total liabilities	8,131,300,000	8,550,100,000
COMMITMENTS AND CONTINGENCIES (NOTE 13)
STOCKHOLDERS' EQUITY
Common stockholders' equity	1,134,500,000	1,125,800,000
Retained earnings	3,290,900,000	2,955,400,000
Accumulated other comprehensive loss, net of tax	(11,900,000)	(24,800,000)
Treasury stock, at cost	(100,000)	(100,000)
Total stockholders' equity	4,413,400,000	4,056,300,000
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	12,544,700,000	12,606,400,000
OG&E [Member]
CURRENT ASSETS
Accounts receivable	249,400,000	162,000,000.0
Accrued unbilled revenues	74,200,000	65,000,000.0
Advances to parent	91,000,000.0	0
Fuel inventories	108,800,000	40,600,000
Materials and supplies, at average cost	180,500,000	117,900,000
Fuel clause under recoveries	514,900,000	151,900,000
Other	97,800,000	67,700,000
Total current assets	1,316,600,000	605,100,000
OTHER PROPERTY AND INVESTMENTS
Total other property and investments	4,400,000	3,900,000
PROPERTY, PLANT AND EQUIPMENT
In service	14,689,100,000	13,893,700,000
Construction work in progress	436,100,000	252,000,000.0
Total property, plant and equipment	15,125,200,000	14,145,700,000
Less: accumulated depreciation	4,584,500,000	4,318,900,000
Net property, plant and equipment	10,540,700,000	9,826,800,000
DEFERRED CHARGES AND OTHER ASSETS
Regulatory assets	524,300,000	1,230,800,000
Other	24,500,000	21,400,000
Total deferred charges and other assets	548,800,000	1,252,200,000
TOTAL ASSETS	12,410,500,000	11,688,000,000.0
CURRENT LIABILITIES
Accounts payable	395,800,000	240,600,000
Advances from parent	0	101,300,000
Customer deposits	88,800,000	81,100,000
Accrued taxes	46,500,000	50,800,000
Accrued interest	40,800,000	40,400,000
Accrued compensation	27,800,000	27,800,000
Long-term debt due within one year	500,000,000.0	0
Other	49,300,000	33,800,000
Total current liabilities	1,149,000,000.0	575,800,000
LONG-TERM DEBT	3,498,900,000	3,996,500,000
DEFERRED CREDITS AND OTHER LIABILITIES
Accrued benefit obligations	98,300,000	75,100,000
Deferred income taxes	1,271,100,000	1,000,400,000
Deferred investment tax credits	12,000,000.0	12,800,000
Regulatory liabilities	1,147,100,000	1,231,100,000
Other	188,900,000	193,500,000
Total deferred credits and other liabilities	2,717,400,000	2,512,900,000
Total liabilities	7,365,300,000	7,085,200,000
COMMITMENTS AND CONTINGENCIES (NOTE 13)
STOCKHOLDERS' EQUITY
Common stockholders' equity	1,574,600,000	1,571,700,000
Retained earnings	3,470,600,000	3,031,100,000
Total stockholders' equity	5,045,200,000	4,602,800,000
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 12,410,500,000	$ 11,688,000,000.0