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ORGANIZATION AND BASIS OF PRESENTATION (Tables)
 12 Months Ended
Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of Regulatory Assets on the Balance Sheets
The following table provides information about the composition of net regulatory assets and liabilities as of December 31, 2024 and 2023, and the changes during the year 2024:
As of December 31,
Net Regulatory Assets (Liabilities) by Source20242023Change
 (In millions)
Customer payables for future income taxes$(2,234)$(2,382)$148 
Spent nuclear fuel disposal costs(72)(83)11 
Asset removal costs(681)(652)(29)
Deferred transmission costs190 286 (96)
Deferred generation costs481 572 (91)
Deferred distribution costs287 247 40 
Storm-related costs1,015 799 216 
Energy efficiency program costs349 198 151 
New Jersey societal benefit costs87 79 8 
Vegetation management125 102 23 
Other75 (11)86 
Net Regulatory Liabilities included on the Consolidated Balance Sheets$(378)$(845)$467 

The following table provides information about the composition of net regulatory assets that do not earn a current return as of December 31, 2024 and 2023, of which approximately $698 million and $371 million, respectively, are currently being recovered through rates over varying periods, through 2068, depending on the nature of the deferral and the jurisdiction:
Regulatory Assets by Source Not Earning aAs of December 31,
Current Return20242023Change
(In millions)
Deferred transmission costs$8 $6 $2 
Deferred generation costs314 432 (118)
Deferred distribution costs153 68 85 
Storm-related costs694 602 92 
Vegetation management16 21 (5)
Other58 68 (10)
Regulatory Assets Not Earning a Current Return$1,243 $1,197 $46 
Schedule of Goodwill The following table presents goodwill by reporting unit as of December 31, 2024 and 2023:
(In millions)Distribution SegmentIntegrated SegmentStand-Alone Transmission SegmentFirstEnergy Consolidated
Goodwill$3,222 $1,953 $443 $5,618 
Schedule of Property, Plant and Equipment Balances
Property, plant and equipment balances by segment as of December 31, 2024 and 2023, were as follows:
December 31, 2024
Segment
In Service(1)
Accum. Depr.(2)
Net PlantCWIPTotalAverage Service Life
(In millions)
(years)
Distribution $21,245 $(7,338)$13,907 $618 $14,525 
5 - 80
Integrated 17,080 (3,943)13,137 1,076 14,213 
5 - 100
Stand-Alone Transmission 13,509 (2,660)10,849 986 11,835 
5 - 85
Corporate/Other1,062 (607)455 74 529 
3 - 63
Total Property, Plant and Equipment $52,896 $(14,548)$38,348 $2,754 $41,102 
December 31, 2023
Segment
In Service(1)
Accum. Depr.(2)
Net PlantCWIPTotal
Average Service Life
(In millions)(years)
Distribution$20,423 $(7,008)$13,415 $417 $13,832 
5 - 80
Integrated16,180 (3,748)12,432 823 13,255 
5 - 100
Stand-Alone Transmission12,388 (2,461)9,927 828 10,755 
5 - 85
Corporate/Other1,116 (594)522 48 570 
3 - 63
Total Property, Plant and Equipment$50,107 $(13,811)$36,296 $2,116 $38,412 
(1) Includes finance leases of $46 million and $68 million as of December 31, 2024 and 2023, respectively.
(2) Includes finance lease accumulated amortization of $14 million and $33 million as of December 31, 2024 and 2023, respectively.