Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
REVENUES:
Total revenues	[1]	$ 3,006	$ 2,818	$ 6,237	$ 5,807
OPERATING EXPENSES:
Fuel		140	190	273	330
Purchased power		894	802	2,018	1,677
Other operating expenses		885	896	1,731	1,716
Provision for depreciation		361	348	722	688
Deferral of regulatory assets, net		(33)	(129)	(113)	(166)
General taxes		278	264	574	556
Total operating expenses		2,525	2,371	5,205	4,801
OPERATING INCOME		481	447	1,032	1,006
OTHER INCOME (EXPENSE):
Debt redemption costs (Note 6)		(36)	(118)	(36)	(156)
Equity method investment earnings (Note 1)		35	65	91	77
Miscellaneous income, net		43	95	78	189
Pension and OPEB mark-to-market adjustment (Note 4)		59	0	59	0
Interest expense		(276)	(265)	(539)	(540)
Capitalized financing costs		22	17	43	36
Total other expense		(153)	(206)	(304)	(394)
INCOME BEFORE INCOME TAXES		328	241	728	612
INCOME TAXES		74	49	164	132
NET INCOME		254	192	564	480
Income attributable to noncontrolling interest		19	5	37	5
EARNINGS ATTRIBUTABLE TO FIRSTENERGY CORP.		$ 235	$ 187	$ 527	$ 475
EARNINGS PER SHARE ATTRIBUTABLE TO FIRSTENERGY CORP. (Note 3):
Basic - Earnings Per Share Attributable to FirstEnergy Corp. (in dollars per share)		$ 0.41	$ 0.33	$ 0.92	$ 0.83
Diluted - Earnings Per Share Attributable to FirstEnergy Corp. (in dollars per share)		$ 0.41	$ 0.33	$ 0.92	$ 0.83
WEIGHTED AVERAGE NUMBER OF COMMON SHARES OUTSTANDING:
Basic (in shares)		573	571	573	571
Diluted (in shares)		574	572	574	572
Distribution Services and Retail Generation
REVENUES:
Total revenues		$ 2,375	$ 2,170	$ 5,055	$ 4,567
Transmission
REVENUES:
Total revenues		518	440	978	891
Other
REVENUES:
Total revenues		$ 113	$ 208	$ 204	$ 349

[1] Includes excise and gross receipts tax collections of $92 million and $91 million during the three months ended June 30, 2023 and 2022, respectively, and $201 million and $194 million during the six months ended June 30, 2023 and 2022, respectively.