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v3.25.1

SEGMENT INFORMATION - Narrative (Details) customer in Millions, $ in Billions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2025 USD ($) customer site MW | Dec. 31, 2025 site MW | Dec. 31, 2024 site MW
Segment Reporting Information [Line Items] |  |  |
Number of customers | customer | 6.0 |  |
FEV | Global Holding |  |  |
Segment Reporting Information [Line Items] |  |  |
Investment ownership percentage | 33.33% |  |
JERSEY CENTRAL POWER & LIGHT COMPANY |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of customers | customer | 1.2 |  |
Distribution Segment |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of customers | customer | 4.3 |  |
Distribution Segment | JERSEY CENTRAL POWER & LIGHT COMPANY |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of customers | customer | 1.2 |  |
Integrated Segment |  |  |
Segment Reporting Information [Line Items] |  |  |
Plant capacity (in MW's) | 3,604 |  |
Other Business Operations | FE |  |  |
Segment Reporting Information [Line Items] |  |  |
Long-term debt and other long-term obligations | $ | $ 6.5 |  |
Other Business Operations | OVEC |  |  |
Segment Reporting Information [Line Items] |  |  |
Plant capacity (in MW's) | 67 |  |
Integrated | MP and PE | Solar Generation Project |  |  |
Segment Reporting Information [Line Items] |  |  |
Plant capacity (in MW's) | 50 |  |
Number of approved solar sites | site | 5 |  |
Number of completed solar sites | site |  |  | 2
Integrated | MP and PE | Solar Generation Project | Forecast |  |  |
Segment Reporting Information [Line Items] |  |  |
Plant capacity (in MW's) |  | 26 |
Number of sites expected to be completed | site |  | 3 |
Integrated | MP and PE | Solar Generation Project | West Virginia |  |  |
Segment Reporting Information [Line Items] |  |  |
Plant capacity (in MW's) |  |  | 24

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