v3.25.0.1
FINANCING - Dividend Restrictions and Structural Considerations Narrative (Details)
$ in Billions
12 Months Ended
Dec. 31, 2024
USD ($)
Variable Interest Entity [Line Items]  
Undistributed retained earnings of subsidiaries $ 6.5
Southern Company Gas  
Variable Interest Entity [Line Items]  
Retained earnings, unappropriated $ 1.6