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ACQUISITIONS AND DISPOSITIONS - Schedule of Asset Acquisitions (Details) - Southern Power - MW	1 Months Ended
	Feb. 28, 2021	May 31, 2020
Deuel Harvest
Asset Acquisition [Line Items]
Approximate Nameplate Capacity (MW)	300
Deuel Harvest | Maximum
Asset Acquisition [Line Items]
PPA Contract Period	25 years
Deuel Harvest | Minimum
Asset Acquisition [Line Items]
PPA Contract Period	15 years
Beech Ridge II(b)
Asset Acquisition [Line Items]
Approximate Nameplate Capacity (MW)		56
PPA Contract Period		12 years
Deuel Harvest | Deuel Harvest
Asset Acquisition [Line Items]
Ownership Percentage	100.00%
Beech Ridge II(b) | Beech Ridge II(b)
Asset Acquisition [Line Items]
Ownership Percentage		100.00%

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