GENERAL AND BASIS OF PRESENTATION - Hybrid Tax Equity Partnership (Details) - Lower Rio and Arrowleaf storage facilities - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2025	Jun. 30, 2025	May 20, 2025
Business Combination [Line Items]
Partnership agreement, purchase price			$ 62.0
Partnership agreement, initial contribution	$ 32.7	$ 32.7
Purchase option, percent of the aggregate capital contributions			5.00%
Partnership agreement, initial purchase price allocated to tax benefits			$ 32.7