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Condensed Statements of Common Stockholders' Equity (Unaudited) - GPC - USD ($)
shares in Millions, $ in Millions
Total
Common Stock
Paid-In Capital
Retained Earnings
Accumulated Other Comprehensive Income (Loss)
GEORGIA POWER CO
GEORGIA POWER CO
Common Stock
GEORGIA POWER CO
Paid-In Capital
GEORGIA POWER CO
Retained Earnings
GEORGIA POWER CO
Accumulated Other Comprehensive Income (Loss)
Beginning balance (in shares) at Dec. 31, 2023             9      
Beginning balance at Dec. 31, 2023           $ 21,383 $ 398 $ 17,923 $ 3,071 $ (9)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Net income           437     437  
Capital contributions from parent company           750   750    
Other comprehensive income           13       13
Cash dividends on common stock $ (766)     $ (766)   (513)     (513)  
Other 7   $ 10 (1)            
Ending balance (in shares) at Mar. 31, 2024             9      
Ending balance at Mar. 31, 2024           22,070 $ 398 18,673 2,995 4
Beginning balance (in shares) at Dec. 31, 2023             9      
Beginning balance at Dec. 31, 2023           21,383 $ 398 17,923 3,071 (9)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Net income 3,867         2,249        
Other comprehensive income           16        
Ending balance (in shares) at Sep. 30, 2024             9      
Ending balance at Sep. 30, 2024           23,671 $ 398 19,486 3,781 6
Beginning balance (in shares) at Mar. 31, 2024             9      
Beginning balance at Mar. 31, 2024           22,070 $ 398 18,673 2,995 4
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Net income           762     762  
Capital contributions from parent company           113   113    
Other comprehensive income           1       1
Cash dividends on common stock (788)     (788)   (513)     (513)  
Other 1   3              
Ending balance (in shares) at Jun. 30, 2024             9      
Ending balance at Jun. 30, 2024           22,433 $ 398 18,786 3,244 5
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Net income 1,535         1,050     1,050  
Capital contributions from parent company           700   700    
Other comprehensive income           1       1
Cash dividends on common stock (789)     (789)   (512)     (512)  
Other 4   (2)     (1)     (1)  
Ending balance (in shares) at Sep. 30, 2024             9      
Ending balance at Sep. 30, 2024           23,671 $ 398 19,486 3,781 6
Beginning balance (in shares) at Dec. 31, 2024             9      
Beginning balance at Dec. 31, 2024           23,681 $ 398 19,708 3,562 13
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Net income           596     596  
Capital contributions from parent company           702   702    
Other comprehensive income           (1)       (1)
Cash dividends on common stock (791)     (791)   (552)     (552)  
Other (5)   (1) (2)            
Ending balance (in shares) at Mar. 31, 2025             9      
Ending balance at Mar. 31, 2025           24,426 $ 398 20,410 3,606 12
Beginning balance (in shares) at Dec. 31, 2024             9      
Beginning balance at Dec. 31, 2024           23,681 $ 398 19,708 3,562 13
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Net income 3,925         2,452        
Other comprehensive income           4        
Ending balance (in shares) at Sep. 30, 2025             9      
Ending balance at Sep. 30, 2025           26,227 $ 398 21,455 4,358 16
Beginning balance (in shares) at Mar. 31, 2025             9      
Beginning balance at Mar. 31, 2025           24,426 $ 398 20,410 3,606 12
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Net income           607     607  
Capital contributions from parent company           972   972    
Other comprehensive income           4       4
Cash dividends on common stock (815)     (815)   (553)     (553)  
Other 6   6 1   1     1  
Ending balance (in shares) at Jun. 30, 2025             9      
Ending balance at Jun. 30, 2025           25,457 $ 398 21,382 3,661 16
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Net income 1,711         1,248     1,248  
Capital contributions from parent company           73   73    
Other comprehensive income           0        
Cash dividends on common stock (815)     (815)   (552)     (552)  
Other $ (4) $ 1 $ (10) $ 1 $ (1) 1     1  
Ending balance (in shares) at Sep. 30, 2025             9      
Ending balance at Sep. 30, 2025           $ 26,227 $ 398 $ 21,455 $ 4,358 $ 16