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COMMITMENTS AND CONTINGENCIES - Spent Nuclear Fuel Obligations Narrative (Details) - Yankee Companies - USD ($) $ in Millions |  |  | 1 Months Ended
--- | --- | --- | ---
Jun. 08, 2022 | Mar. 25, 2021 | Sep. 30, 2024
Guarantor Obligations [Line Items] |  |  |
Damages sought | $ 33.1 | $ 120.4 |
Litigation settlement, amount awarded from other party |  |  | $ 145.0

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