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BUSINESS ACQUISITIONS - Narrative (Details) - Enel Green Power North America ("EGPNA")
$ in Millions
3 Months Ended 12 Months Ended
Jan. 04, 2024
USD ($)
greenfieldDevelopmentAsset
geothermalPowerPlant
tripleHybridPowerPlant
solarPowerPlant
Dec. 31, 2024
USD ($)
Sep. 30, 2024
USD ($)
Jun. 30, 2024
USD ($)
Mar. 31, 2024
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Business Acquisition [Line Items]              
Number of contracted geothermal power plants, business combination | geothermalPowerPlant 2            
Number of triple hybrid power plant, business Combination | tripleHybridPowerPlant 1            
Number of solar power plants, business combination | solarPowerPlant 2            
Number of greenfield development assets, business combination | greenfieldDevelopmentAsset 2            
Business combination, consideration transferred, total $ 274.6            
Business acquisition, percentage of coting interests acquired 100.00%            
Business combination, acquisition related costs   $ 0.0 $ 0.0 $ 0.0 $ 1.3   $ 1.1
Electricity              
Business Acquisition [Line Items]              
Business combination, pro forma information, revenue of acquiree since acquisition date, actual           $ 33.3  
Business combination, pro forma information, earnings or loss of acquiree since acquisition date, actual           $ 8.8