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COMMON EQUITY - COMMON STOCK ISSUED (Details) - USD ($) $ in Millions | 3 Months Ended | 8 Months Ended |
--- | --- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Mar. 31, 2025 | Aug. 31, 2024
Capital Unit [Line Items] |  |  |  |
Shares issued - At-the-market offering program | 977,824 | 0 |  |
Issuance of common stock, net | $ 117.1 | $ 19.2 |  |
Roll Forward of Common Stock Outstanding |  |  |  |
Common Stock, Shares, Outstanding, Beginning Balance | 317,680,855 | 315,434,531 |  |
Shares issued - At-the-market offering program | 977,824 | 0 |  |
Shares Issued - Stock-based compensation | 342,711 | 142,178 |  |
Shares Issued - 401(k) | 43,300 | 124,300 |  |
Shares Issued - Stock investment plan | 88,811 | 121,578 |  |
Common Stock, Shares, Outstanding, Ending Balance | 319,133,501 | 315,822,587 | 319,133,501 |
At-the-market program offering |  |  |  |
Capital Unit [Line Items] |  |  |  |
Maximum aggregate sales of common stock through ATM Program |  |  |  | $ 1,500.0
Shares issued - At-the-market offering program |  |  | 2,008,498 |
Issuance of common stock, net |  |  | $ 201.4 |
Payments of Stock Issuance Costs |  |  | $ 2.8 |
Roll Forward of Common Stock Outstanding |  |  |  |
Shares issued - At-the-market offering program |  |  | 2,008,498 |

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