STOCK-BASED COMPENSATION PLANS (Tables)

12 Months Ended

Dec. 31, 2023

Share-Based Payment Arrangement [Abstract]

Schedule of Stock-based Compensation Expense

Stock-based compensation costs and the amount of stock-based compensation costs capitalized related to FirstEnergy plans for the years ended December 31, 2023, 2022 and 2021, are included in the following tables:

	For the Years Ended December 31,
Stock-based Compensation Plan	2023		2022		2021
	(In millions)
Restricted stock units	$	39	$	55	$	40
Restricted stock	5		3		2
401(k) savings plan	38		36		35
EDCP & DCPD	1		7		13
Total	$	83	$	101	$	90
Stock-based compensation costs, net of amounts capitalized	$	44	$	54	$	43

Schedule of Nonvested Restricted Stock Units Activity

Restricted stock unit activity for the year ended December 31, 2023, was as follows:

Restricted Stock Unit Activity	Shares (in millions)	Weighted-Average Grant Date Fair Value (per share)
Nonvested as of January 1, 2023	1.9	$	41.57
Granted in 2023	1.4	38.36
Forfeited in 2023	(0.2)	39.32
Vested in 2023(1)	(0.6)	39.38
Nonvested as of December 31, 2023	2.5	$	38.82

(1) Excludes dividend equivalents of approximately 63 thousand shares earned during vesting periodRestricted stock activity for the year ended 2023, was as follows:

Restricted Stock Activity	Shares (in millions)	Weighted-Average Grant Date Fair Value (per share)
Nonvested as of January 1, 2023	0.20	$	42.35
Granted in 2023	0.30	37.42
Forfeited in 2023	(0.02)	36.86
Vested in 2023	(0.02)	39.45
Nonvested as of December 31, 2023	0.46	$	39.57