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REVENUE - Performance Obligations - Electric Operations (Details) - Physically Delivered Prepaid Power Contract - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2025	Jun. 30, 2025
Disaggregation of Revenue [Line Items]
Agreement, term	5 months	17 months
Prepaid contract	$ 20.0	$ 35.0
Incremental borrowing rate	9.92%	9.50%

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