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, 2022							9
Beginning balance at Dec. 31, 2022	$ 34,532	$ 5,417	$ 13,673	$ 11,538	$ (167)	$ 18,858	$ 398	$ 15,626	$ 2,846	$ (12)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income						296			296
Capital contributions from parent company						752		752
Other comprehensive income (loss)	(44)				(44)
Cash dividends on common stock	(742)			(742)		(464)			(464)
Other	0		2			1			1
Ending balance (in shares) at Mar. 31, 2023							9
Ending balance at Mar. 31, 2023	34,562	5,421	13,715	11,658	(211)	19,443	$ 398	16,378	2,679	(12)
Beginning balance (in shares) at Dec. 31, 2022							9
Beginning balance at Dec. 31, 2022	34,532	5,417	13,673	11,538	(167)	18,858	$ 398	15,626	2,846	(12)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	3,053					1,547
Ending balance (in shares) at Sep. 30, 2023							9
Ending balance at Sep. 30, 2023	35,304	5,422	13,751	12,391	(130)	20,857	$ 398	17,467	3,002	(10)
Beginning balance (in shares) at Mar. 31, 2023							9
Beginning balance at Mar. 31, 2023	34,562	5,421	13,715	11,658	(211)	19,443	$ 398	16,378	2,679	(12)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income						471			471
Capital contributions from parent company						33		33
Other comprehensive income (loss)	43				43	1				1
Cash dividends on common stock	(764)			(764)		(464)			(464)
Other	0		2
Ending balance (in shares) at Jun. 30, 2023							9
Ending balance at Jun. 30, 2023	34,648	5,422	13,742	11,732	(168)	19,484	$ 398	16,411	2,686	(11)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,432					780			780
Capital contributions from parent company						1,056		1,056
Other comprehensive income (loss)	38				38	1				1
Cash dividends on common stock	(765)			(765)		(464)			(464)
Other	(1)		(2)	2	0
Ending balance (in shares) at Sep. 30, 2023							9
Ending balance at Sep. 30, 2023	35,304	5,422	13,751	12,391	(130)	20,857	$ 398	17,467	3,002	(10)
Beginning balance (in shares) at Dec. 31, 2023							9
Beginning balance at Dec. 31, 2023	35,225	5,423	13,775	12,482	(177)	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 (loss)	37				37	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	35,614	5,431	13,846	12,844	(140)	22,070	$ 398	18,673	2,995	4
Beginning balance (in shares) at Dec. 31, 2023							9
Beginning balance at Dec. 31, 2023	35,225	5,423	13,775	12,482	(177)	21,383	$ 398	17,923	3,071	(9)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	3,794					2,249
Ending balance (in shares) at Sep. 30, 2024							9
Ending balance at Sep. 30, 2024	36,905	5,441	14,048	14,005	(139)	23,671	$ 398	19,486	3,781	6
Beginning balance (in shares) at Mar. 31, 2024							9
Beginning balance at Mar. 31, 2024	35,614	5,431	13,846	12,844	(140)	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 (loss)	10				10	1				1
Cash dividends on common stock	(788)			(788)		(513)			(513)
Other	1	0	3	0	0
Ending balance (in shares) at Jun. 30, 2024							9
Ending balance at Jun. 30, 2024	36,111	5,436	13,947	13,259	(130)	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 (loss)	(9)				(9)	1				1
Cash dividends on common stock	(789)			(789)		(512)			(512)
Other	4	0	(2)	0	0	(1)			(1)
Ending balance (in shares) at Sep. 30, 2024							9
Ending balance at Sep. 30, 2024	$ 36,905	$ 5,441	$ 14,048	$ 14,005	$ (139)	$ 23,671	$ 398	$ 19,486	$ 3,781	$ 6