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Introduction - Asset Retirement Obligations (Details) - USD ($)
$ in Millions
1 Months Ended
Sep. 30, 2024
Feb. 14, 2024
GEORGIA POWER CO    
Schedule of Asset Retirement Obligation [Line Items]    
Asset retirement obligation, period decrease $ 389  
Plant Vogtle Unit 3    
Schedule of Asset Retirement Obligation [Line Items]    
Asset retirement obligations   $ 118