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, 2022			$ 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, 2023	25,755		6,069	4,050	2,019
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	658	658	149		149
Common stock dividends	(381)	$ (381)	(100)		(100)
Contributions from parent			580	580
Ending Balance at Mar. 31, 2024	$ 26,061		$ 6,698	$ 4,630	$ 2,068