v3.25.1
INCOME TAXES - Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 25, 2024
Effective Income Tax Rate Reconciliation [Line Items]      
Income (loss) before income taxes (benefits) $ 540 $ 402  
Federal income tax expense at the 21% statutory rate 113 84  
Increases (reductions) in tax expense resulting from:      
State and municipal income taxes, net of federal tax benefit 31 23  
AFUDC equity and other flow-through (9) (7)  
Taxes related to the combined sale of 49.9% of the equity interests of FET 0 7  
Excess deferred tax amortization (13) (13)  
Valuation allowances 0 39  
Other, net 4 2  
Total income taxes (benefits) $ 126 $ 135  
Effective income tax rate 23.30% 33.60%  
JERSEY CENTRAL POWER & LIGHT COMPANY      
Effective Income Tax Rate Reconciliation [Line Items]      
Income (loss) before income taxes (benefits) $ 65 $ (12)  
Federal income tax expense at the 21% statutory rate 14 (3)  
Increases (reductions) in tax expense resulting from:      
State and municipal income taxes, net of federal tax benefit 5 (1)  
AFUDC equity and other flow-through (2) 0  
Excess deferred tax amortization (1) (1)  
Other, net 0 1  
Total income taxes (benefits) $ 16 $ (4)  
Effective income tax rate 24.60% 33.30%  
FET | North American Transmission Company II LLC      
Increases (reductions) in tax expense resulting from:      
Sale of ownership interest by parent   19.90% 49.90%