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INVESTMENTS IN UNCONSOLIDATED AFFILIATES - Summary of Fair Value (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2023 | Jun. 30, 2023 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Impairments of Offshore Wind Investments | $ (1,766,000) | $ (401,000) | $ (2,167,000) | $ 0 | $ 0
Carrying Value as of December 31, 2023 | 660,473 |  | 660,473 | 2,176,080 |
Sunrise Wind |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Carrying Value as of December 31, 2023, before Impairment Charge | 699,000 |  | 699,000 |  |
Impairments of Offshore Wind Investments | (1,218,000) |  |  |  |
Carrying Value as of December 31, 2023 | (519,000) |  | (519,000) |  |
Revolution Wind |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Carrying Value as of December 31, 2023, before Impairment Charge | 799,000 |  | 799,000 |  |
Impairments of Offshore Wind Investments | (544,000) |  |  |  |
Carrying Value as of December 31, 2023 | 255,000 |  | 255,000 |  |
South Fork Class B Member, LLC |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Carrying Value as of December 31, 2023, before Impairment Charge | 299,000 |  | 299,000 |  |
Impairments of Offshore Wind Investments | 0 |  |  |  |
Carrying Value as of December 31, 2023 | 299,000 |  | 299,000 |  |
South Fork Wind Holdings, LLC Class A |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Carrying Value as of December 31, 2023, before Impairment Charge | 485,000 |  | 485,000 |  |
Impairments of Offshore Wind Investments | (4,000) |  |  |  |
Carrying Value as of December 31, 2023 | 481,000 |  | 481,000 |  |
Total Offshore Wind Investments |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Carrying Value as of December 31, 2023, before Impairment Charge | 2,282,000 |  | 2,282,000 |  |
Impairments of Offshore Wind Investments | (1,766,000) |  |  |  |
Carrying Value as of December 31, 2023 | $ 515,500 |  | $ 515,500 | $ 1,947,100 |

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