CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions		12 Months Ended
		Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
REVENUES:
Total revenues	[1]	$ 15,090	$ 13,472	$ 12,870
OPERATING EXPENSES:
Fuel		652	464	538
Purchased power		4,583	3,912	4,108
Other operating expenses		4,122	4,044	3,579
Provision for depreciation		1,664	1,581	1,461
Deferral of regulatory assets, net		(109)	(231)	(261)
General taxes		1,345	1,212	1,164
Ohio settlement charges (Note 13.)		275	0	0
Impairment of assets (Note 1.)		352	115	15
Total operating expenses		12,884	11,097	10,604
OPERATING INCOME		2,206	2,375	2,266
OTHER INCOME (EXPENSE):
Debt redemption costs (Note 11.)		(24)	(85)	(36)
Equity method investment earnings, net (Note 1.)		0	58	175
Miscellaneous income, net		156	189	164
Pension and OPEB mark-to-market adjustments (Note 4.)		253	(22)	(78)
Interest expense		(1,217)	(1,144)	(1,124)
Capitalized financing costs		185	133	97
Total other expense		(647)	(871)	(802)
INCOME BEFORE INCOME TAXES		1,559	1,504	1,464
INCOME TAXES		288	377	267
INCOME FROM CONTINUING OPERATIONS		1,271	1,127	1,197
Discontinued operations (Note 1.)	[2]	0	0	(21)
NET INCOME		1,271	1,127	1,176
Income attributable to noncontrolling interest (continuing operations)		251	149	74
EARNINGS ATTRIBUTABLE TO FIRSTENERGY CORP.		1,020	978	1,102
EARNINGS ATTRIBUTABLE TO FIRSTENERGY CORP.
Earnings from continuing operations		1,020	978	1,123
Earnings from discontinued operations	[2]	0	0	(21)
EARNINGS ATTRIBUTABLE TO FIRSTENERGY CORP.		$ 1,020	$ 978	$ 1,102
EARNINGS PER SHARE ATTRIBUTABLE TO FIRSTENERGY CORP. (Note 3.)
Basic - continuing operations (in dollars per share)		$ 1.77	$ 1.70	$ 1.96
Basic - discontinued operations (in dollars per share)		0	0	(0.04)
Basic (in dollars per share)		1.77	1.70	1.92
Diluted - continuing operations (in dollars per share)		1.76	1.70	1.96
Diluted - discontinued operations (in dollars per share)		0	0	(0.04)
Diluted (in dollars per share)		$ 1.76	$ 1.70	$ 1.92
WEIGHTED AVERAGE NUMBER OF COMMON SHARES OUTSTANDING:
Basic (in shares)		577	575	573
Diluted (in shares)		578	577	574
Distribution services and retail generation
REVENUES:
Total revenues		$ 12,189	$ 10,976	$ 10,405
Transmission
REVENUES:
Total revenues		2,311	2,148	2,049
Other
REVENUES:
Total revenues		$ 590	$ 348	$ 416

[1] Includes excise and gross receipts tax collections of $463 million, $429 million and $420 million in 2025, 2024 and 2023, respectively.

[2] Consists of income taxes of $21 million in 2023.