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VARIABLE INTEREST ENTITIES - POWER PURCHASE COMMITMENT (Details) - Power purchase commitment
$ in Millions
1 Months Ended
Nov. 30, 2021
USD ($)
Sep. 30, 2022
USD ($)
May 31, 2022
MW
Variable interest entities      
Firm capacity from power purchase commitment (in megawatts) | MW     236.5
Residual guarantee associated with power purchase commitment   $ 0.0  
Maximum exposure to loss from power purchase commitment   $ 0.9  
Whitewater cogeneration facility      
Variable interest entities      
Expected purchase price for facility $ 72.7