Statements of Stockholders' Equity - GPC - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Georgia Power	Georgia Power Common Stock	Georgia Power Paid-In Capital	Georgia Power Retained Earnings	Georgia Power Accumulated Other Comprehensive Income (Loss)
Beginning balance (in shares) at Dec. 31, 2018		1,035					9
Beginning balance at Dec. 31, 2018	$ 29,039	$ 5,164	$ 11,094	$ 8,706	$ (203)	$ 14,323	$ 398	$ 10,322	$ 3,612	$ (9)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss)	4,744					1,720			1,720
Capital contributions from parent company						640		640
Other comprehensive income (loss)	(118)				(118)	(42)				(42)
Cash dividends on common stock	(2,570)			(2,570)		(1,576)			(1,576)
Ending balance (in shares) at Dec. 31, 2019		1,054					9
Ending balance at Dec. 31, 2019	31,759	$ 5,257	11,734	10,877	(321)	15,065	$ 398	10,962	3,756	(51)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss)	3,103					1,575			1,575
Capital contributions from parent company						1,399		1,399
Other comprehensive income (loss)	(75)				(75)	4				4
Cash dividends on common stock	(2,685)			(2,685)		(1,542)			(1,542)
Ending balance (in shares) at Dec. 31, 2020		1,058					9
Ending balance at Dec. 31, 2020	32,234	$ 5,268	11,834	11,311	(395)	16,501	$ 398	12,361	3,789	(47)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss)	2,309					584			584
Capital contributions from parent company						1,792		1,792
Other comprehensive income (loss)	158				158	6				6
Cash dividends on common stock	(2,777)			(2,777)		(1,649)			(1,649)
Ending balance (in shares) at Dec. 31, 2021		1,061					9
Ending balance at Dec. 31, 2021	$ 32,276	$ 5,279	$ 11,950	$ 10,929	$ (237)	$ 17,234	$ 398	$ 14,153	$ 2,724	$ (41)