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GOODWILL - Summary of Goodwill by Reportable Segment (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
Goodwill [Roll Forward] |  |
Beginning Balance | $ 4,532,100 | $ 4,522,600
Goodwill, Rounding | 3,571,400 |
Ending Balance | 3,571,333 | 4,532,100
Water Acquisitions |  |
Goodwill [Roll Forward] |  |
Water Acquisitions |  | 9,500
Water Sale and Acquisition, net | (1,200) |
Water Goodwill Impairment | (297,000) |
Water Goodwill Reclassified as Held for Sale | (662,500) |
Electric Distribution |  |
Goodwill [Roll Forward] |  |
Beginning Balance | 2,543,600 | 2,543,600
Ending Balance | 2,543,600 | 2,543,600
Electric Distribution | Water Acquisitions |  |
Goodwill [Roll Forward] |  |
Water Acquisitions |  | 0
Water Sale and Acquisition, net | 0 |
Water Goodwill Impairment | 0 |
Water Goodwill Reclassified as Held for Sale | 0 |
Electric Transmission |  |
Goodwill [Roll Forward] |  |
Beginning Balance | 576,800 | 576,800
Ending Balance | 576,800 | 576,800
Electric Transmission | Water Acquisitions |  |
Goodwill [Roll Forward] |  |
Water Acquisitions |  | 0
Water Sale and Acquisition, net | 0 |
Water Goodwill Impairment | 0 |
Water Goodwill Reclassified as Held for Sale | 0 |
Natural Gas Distribution |  |
Goodwill [Roll Forward] |  |
Beginning Balance | 451,000 | 451,000
Ending Balance | 451,000 | 451,000
Natural Gas Distribution | Water Acquisitions |  |
Goodwill [Roll Forward] |  |
Water Acquisitions |  | 0
Water Sale and Acquisition, net | 0 |
Water Goodwill Impairment | 0 |
Water Goodwill Reclassified as Held for Sale | 0 |
Water Distribution |  |
Goodwill [Roll Forward] |  |
Beginning Balance | 960,700 | 951,200
Water Acquisitions | 4,200 |
Ending Balance | 0 | 960,700
Water Distribution | Water Acquisitions |  |
Goodwill [Roll Forward] |  |
Water Acquisitions | 9,500 | $ 9,500
Water Sale and Acquisition, net | (1,200) |
Water Goodwill Impairment | (297,000) |
Water Goodwill Reclassified as Held for Sale | $ (662,500) |

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