ACQUISITIONS - TATANKA RIDGE (Details) - Tatanka Ridge - WECI $ in Millions	1 Months Ended
	Dec. 31, 2020 USD ($) MW
Asset Acquisition [Line Items]
Ownership interest of wind generating facility acquired	85.00%
Capacity of generation unit | MW	155
Acquisition purchase price | $	$ 240.1
Duration of offtake agreement for the sale of energy produced	12 years
Duration of offtake agreement for the sale of energy produced for company 2	10 years
Percentage of tax benefits entitled to	99.00%
Duration of receiving tax benefits	11 years