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EARNINGS PER SHARE - Narrative (Details) - $ / shares shares in Thousands | 3 Months Ended
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Mar. 31, 2024 | Mar. 31, 2023
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 |
Stock Options |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |
Antidilutive securities excluded from computation of EPS (in shares) | 0 | 0

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