XML 62 R47.htm IDEA: XBRL DOCUMENT v3.25.2
PENSION AND OTHER POST-EMPLOYMENT BENEFITS - Narrative (Details)
employee in Thousands, $ in Millions
 1 Months Ended 6 Months Ended
Jan. 31, 2025
USD ($)
employee
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Employee benefit plan funding and related payments   $ 24 $ 31
JERSEY CENTRAL POWER & LIGHT COMPANY      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Employee benefit plan funding and related payments   $ 0 $ 8
Pension      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Discount rate   8.50%  
Expected future contributions   $ 300  
Pension | JERSEY CENTRAL POWER & LIGHT COMPANY      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Expected future contributions   $ 0  
Pension | MetLife      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Transfer of plan assets $ 640    
Transfer of benefit obligations $ 652    
Defined benefit plan, number of covered employees by plan | employee 2