Consolidated Statements of Changes in Shareholders Equity (Unaudited) - PECO - USD ($) $ in Millions	Total	Retained Earnings	PECO Energy Co	PECO Energy Co Common Stock	PECO Energy Co Retained Earnings
Beginning Balance at Dec. 31, 2021			$ 5,112	$ 3,428	$ 1,684
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 598	$ 597	206		206
Common stock dividends	(332)	(332)	(100)		(100)
Contributions from parent			227	227
Ending Balance at Mar. 31, 2022			5,445	3,655	1,790
Beginning Balance at Dec. 31, 2021			5,112	3,428	1,684
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,739		474
Ending Balance at Sep. 30, 2022			5,561	3,702	1,859
Beginning Balance at Mar. 31, 2022			5,445	3,655	1,790
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	465	465	133		133
Common stock dividends	(332)	(332)	(100)		(100)
Ending Balance at Jun. 30, 2022			5,478	3,655	1,823
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	676	676	135		135
Common stock dividends	(335)	(335)	(99)		(99)
Contributions from parent			47	47
Ending Balance at Sep. 30, 2022			5,561	3,702	1,859
Beginning Balance at Dec. 31, 2022	24,744		5,563	3,702	1,861
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	669	669	166		166
Common stock dividends	(359)	(359)	(101)		(101)
Contributions from parent			330	330
Ending Balance at Mar. 31, 2023			5,958	4,032	1,926
Beginning Balance at Dec. 31, 2022	24,744		5,563	3,702	1,861
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,711		410
Ending Balance at Sep. 30, 2023	25,470		6,017	4,050	1,967
Beginning Balance at Mar. 31, 2023			5,958	4,032	1,926
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	343	343	97		97
Common stock dividends	(359)	(359)	(101)		(101)
Ending Balance at Jun. 30, 2023			5,954	4,032	1,922
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	700	700	146		146
Common stock dividends	(358)	$ (358)	(101)		(101)
Contributions from parent			18	18
Ending Balance at Sep. 30, 2023	$ 25,470		$ 6,017	$ 4,050	$ 1,967