Statements of Changes in Shareholders Equity (Unaudited) - DPL - USD ($) $ in Millions	Total	Retained Earnings	Delmarva Power and Light Company	Delmarva Power and Light Company Common Stock	Delmarva Power and Light Company Retained Earnings
Beginning Balance at Dec. 31, 2022			$ 1,950	$ 1,356	$ 594
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 669	$ 669	60		60
Common stock dividends	(359)	(359)	(42)		(42)
Contributions from parent			99	99
Ending Balance at Mar. 31, 2023			2,067	1,455	612
Beginning Balance at Dec. 31, 2023	25,755		2,093	1,455	638
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	658	658	66		66
Common stock dividends	(381)	$ (381)	(45)		(45)
Contributions from parent			154	154
Ending Balance at Mar. 31, 2024	$ 26,061		$ 2,268	$ 1,609	$ 659