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EARNINGS PER SHARE - Narrative (Details) - $ / shares shares in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
4.00%, 1,300 Million Notes Maturity 2026 | Promissory Notes | FE |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Debt instrument, conversion price (in dollars per share) | $ 46.81 |  | $ 46.81 |
Stock Options |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Antidilutive securities excluded from computation of EPS (in shares) | 0 | 0 | 0 | 0

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