Acquisitions and Dispositions - Schedule of Construction Projects (Details) - SOUTHERN POWER CO - MW	1 Months Ended		5 Months Ended	6 Months Ended		12 Months Ended
	Mar. 31, 2022	Feb. 28, 2022	Mar. 31, 2022	Jun. 30, 2022	Feb. 28, 2022	Dec. 31, 2021
Garland Solar Storage
Business Acquisition [Line Items]
Approximate Nameplate Capacity (MW)				88
PPA Contract Period					20 years
Nameplate capacity placed in service (in MWs)		15		15		73
Tranquillity Solar Storage
Business Acquisition [Line Items]
Approximate Nameplate Capacity (MW)				72
PPA Contract Period			20 years
Nameplate capacity placed in service (in MWs)	40			40		32