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CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($)
$ in Millions
Mar. 31, 2025
Dec. 31, 2024
CURRENT ASSETS    
Cash and cash equivalents $ 26.9 $ 0.6
Accounts receivable 274.0 240.6
Accrued unbilled revenues 90.0 74.6
Fuel inventories 135.6 148.3
Materials and supplies, at average cost 229.1 229.4
Fuel clause under recoveries 164.6 112.7
Other 88.6 88.9
Total current assets 1,008.8 895.1
OTHER PROPERTY AND INVESTMENTS    
Other 125.7 124.2
Total other property and investments 125.7 124.2
PROPERTY, PLANT AND EQUIPMENT    
In service 16,362.0 16,254.6
Construction work in progress 887.0 814.2
Total property, plant and equipment 17,249.0 17,068.8
Less: accumulated depreciation 5,035.8 4,982.2
Net property, plant and equipment 12,213.2 12,086.6
DEFERRED CHARGES AND OTHER ASSETS    
Regulatory assets 558.3 568.1
Other 47.2 42.0
Total deferred charges and other assets 605.5 610.1
TOTAL ASSETS 13,953.2 13,716.0
CURRENT LIABILITIES    
Short-term debt 766.7 469.3
Accounts payable 224.7 305.7
Dividends payable 84.8 84.7
Customer deposits 111.5 111.1
Accrued taxes 49.5 58.8
Accrued interest 72.8 63.8
Accrued compensation 32.5 53.0
Long-term debt due within one year 0.0 32.4
Fuel clause over recoveries 1.5 9.3
Other 38.6 41.7
Total current liabilities 1,382.6 1,229.8
LONG-TERM DEBT 5,121.8 5,020.9
DEFERRED CREDITS AND OTHER LIABILITIES    
Accrued benefit obligations 163.2 170.9
Deferred income taxes 1,388.3 1,371.1
Deferred investment tax credits 10.4 10.6
Regulatory liabilities 1,002.9 1,016.4
Other 268.3 255.4
Total deferred credits and other liabilities 2,833.1 2,824.4
Total liabilities 9,337.5 9,075.1
COMMITMENTS AND CONTINGENCIES (NOTE 12)
STOCKHOLDERS' EQUITY    
Common stockholders' equity 1,166.7 1,167.9
Retained earnings 3,451.6 3,475.7
Accumulated other comprehensive loss, net of tax (2.6) (2.7)
Total stockholders' equity 4,615.7 4,640.9
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY 13,953.2 13,716.0
OG&E [Member]    
CURRENT ASSETS    
Cash and cash equivalents 24.8 0.2
Accounts receivable 273.5 240.1
Accrued unbilled revenues 90.0 74.6
Fuel inventories 135.6 148.3
Materials and supplies, at average cost 229.1 229.4
Fuel clause under recoveries 164.6 112.7
Other 78.0 83.2
Total current assets 995.6 888.5
OTHER PROPERTY AND INVESTMENTS    
Total other property and investments 4.4 4.5
PROPERTY, PLANT AND EQUIPMENT    
In service 16,355.9 16,248.5
Construction work in progress 887.0 814.2
Total property, plant and equipment 17,242.9 17,062.7
Less: accumulated depreciation 5,035.8 4,982.2
Net property, plant and equipment 12,207.1 12,080.5
DEFERRED CHARGES AND OTHER ASSETS    
Regulatory assets 558.3 568.1
Other 45.0 39.7
Total deferred charges and other assets 603.3 607.8
TOTAL ASSETS 13,810.4 13,581.3
CURRENT LIABILITIES    
Short-term debt 17.0 0.0
Accounts payable 207.2 272.2
Advances from parent 418.4 247.6
Customer deposits 111.5 111.1
Accrued taxes 32.7 51.4
Accrued interest 65.6 61.4
Accrued compensation 32.5 53.0
Long-term debt due within one year 0.0 32.4
Fuel clause over recoveries 1.5 9.3
Other 38.6 41.8
Total current liabilities 925.0 880.2
LONG-TERM DEBT 4,714.9 4,614.3
DEFERRED CREDITS AND OTHER LIABILITIES    
Accrued benefit obligations 95.8 102.2
Deferred income taxes 1,427.7 1,410.7
Deferred investment tax credits 10.4 10.6
Regulatory liabilities 1,002.9 1,016.4
Other 233.3 220.5
Total deferred credits and other liabilities 2,770.1 2,760.4
Total liabilities 8,410.0 8,254.9
COMMITMENTS AND CONTINGENCIES (NOTE 12)
STOCKHOLDERS' EQUITY    
Common stockholders' equity 1,592.5 1,589.5
Retained earnings 3,807.9 3,736.9
Total stockholders' equity 5,400.4 5,326.4
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY $ 13,810.4 $ 13,581.3