Consolidated Statements of Changes in Shareholders Equity (Unaudited) - ACE - USD ($) $ in Millions	Total	Retained Earnings	Atlantic City Electric Company	Atlantic City Electric Company Common Stock	Atlantic City Electric Company Retained Earnings
Beginning Balance at Dec. 31, 2021			$ 1,575	$ 1,590	$ (15)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 598	$ 597	26		26
Common stock dividends	(332)	(332)	(19)		(19)
Contributions from parent			173	173
Ending Balance at Mar. 31, 2022			1,755	1,763	(8)
Beginning Balance at Dec. 31, 2021			1,575	1,590	(15)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,739		131
Ending Balance at Sep. 30, 2022			1,753	1,765	(12)
Beginning Balance at Mar. 31, 2022			1,755	1,763	(8)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	465	465	11		11
Common stock dividends	(332)	(332)	(19)		(19)
Ending Balance at Jun. 30, 2022			1,747	1,763	(16)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	676	676	94		94
Common stock dividends	(335)	(335)	(90)		(90)
Contributions from parent			2	2
Ending Balance at Sep. 30, 2022			1,753	1,765	(12)
Beginning Balance at Dec. 31, 2022	24,744		1,753	1,765	(12)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	669	669	33		33
Common stock dividends	(359)	(359)	(21)		(21)
Contributions from parent			63	63
Ending Balance at Mar. 31, 2023			1,828	1,828	0
Beginning Balance at Dec. 31, 2022	24,744		1,753	1,765	(12)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,711		122
Ending Balance at Sep. 30, 2023	25,470		1,829	1,830	(1)
Beginning Balance at Mar. 31, 2023			1,828	1,828	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	343	343	18		18
Common stock dividends	(359)	(359)	(15)		(15)
Ending Balance at Jun. 30, 2023			1,831	1,828	3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	700	700	71		71
Common stock dividends	(358)	$ (358)	(75)		(75)
Contributions from parent			2	2
Ending Balance at Sep. 30, 2023	$ 25,470		$ 1,829	$ 1,830	$ (1)