CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
REVENUES:
Total revenues	[1]	$ 3,380	$ 3,280	$ 7,145	$ 6,567
OPERATING EXPENSES:
Fuel		168	128	317	233
Purchased power		953	877	2,041	1,913
Other operating expenses		995	1,170	2,029	2,176
Provision for depreciation		415	397	826	778
Deferral of regulatory assets, net		(99)	(8)	(109)	(172)
General taxes		302	293	641	604
Total operating expenses		2,734	2,857	5,745	5,532
OPERATING INCOME		646	423	1,400	1,035
OTHER INCOME (EXPENSE):
Debt redemption costs (Note 6)		(24)	(85)	(24)	(85)
Equity method investment earnings, net (Note 1)		0	22	0	43
Miscellaneous income, net		41	59	77	103
Interest expense		(299)	(285)	(587)	(590)
Capitalized financing costs		42	29	80	59
Total other expense		(240)	(260)	(454)	(470)
INCOME BEFORE INCOME TAXES		406	163	946	565
INCOME TAXES		88	65	214	200
NET INCOME		318	98	732	365
Income attributable to noncontrolling interest		50	53	104	67
EARNINGS ATTRIBUTABLE TO FIRSTENERGY CORP.		$ 268	$ 45	$ 628	$ 298
EARNINGS PER SHARE ATTRIBUTABLE TO FIRSTENERGY CORP. (Note 3):
Basic (in dollars per share)		$ 0.46	$ 0.08	$ 1.09	$ 0.52
Diluted (in dollars per share)		$ 0.46	$ 0.08	$ 1.09	$ 0.52
WEIGHTED AVERAGE NUMBER OF COMMON SHARES OUTSTANDING:
Basic (in shares)		577	575	577	575
Diluted (in shares)		578	576	578	576
Distribution services and retail generation
REVENUES:
Total revenues		$ 2,698	$ 2,617	$ 5,779	$ 5,312
Transmission
REVENUES:
Total revenues		562	579	1,148	1,094
Other
REVENUES:
Total revenues		$ 120	$ 84	$ 218	$ 161

[1] Includes excise and gross receipts tax collections of $100 million and $98 million during the three months ended June 30, 2025 and 2024, respectively, and $223 million and $213 million during the six months ended June 30, 2025 and 2024, respectively.