Condensed Statements of Common Stockholders' Equity (Unaudited) - GPC - USD ($) shares in Millions, $ in Millions	Total	Paid-In Capital	Retained Earnings	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	$ 1,071		$ 1,129
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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				437			437
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	2,259
Other comprehensive income				14
Ending balance (in shares) at Jun. 30, 2024					9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,332			1,199
Ending balance at Jun. 30, 2024				22,433	$ 398	18,786	3,244	5
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	1,188		1,203
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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,203			762			762
Ending balance at Jun. 30, 2024				22,433	$ 398	18,786	3,244	5
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	1,270		1,334
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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				596			596
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	2,123
Other comprehensive income				3
Ending balance (in shares) at Jun. 30, 2025					9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,214			1,204
Ending balance at Jun. 30, 2025				25,457	$ 398	21,382	3,661	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	853		880
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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 880			607			607
Ending balance at Jun. 30, 2025				$ 25,457	$ 398	$ 21,382	$ 3,661	$ 16