Statements of Changes in Shareholders Equity (Unaudited) - BGE - USD ($) $ in Millions	Total	Retained Earnings	Baltimore Gas and Electric Company	Baltimore Gas and Electric Company Common Stock	Baltimore Gas and Electric Company Retained Earnings
Beginning Balance at Dec. 31, 2022			$ 4,936	$ 2,861	$ 2,075
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 669	$ 669	200		200
Common stock dividends	(359)	(359)	(80)		(80)
Contributions from parent			237	237
Ending Balance at Mar. 31, 2023			5,293	3,098	2,195
Beginning Balance at Dec. 31, 2022			4,936	2,861	2,075
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,711		286
Ending Balance at Sep. 30, 2023			5,222	3,098	2,124
Beginning Balance at Mar. 31, 2023			5,293	3,098	2,195
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	343	343	42		42
Common stock dividends	(359)	(359)	(79)		(79)
Ending Balance at Jun. 30, 2023			5,256	3,098	2,158
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	700	700	45		45
Common stock dividends	(358)	(358)	(79)		(79)
Ending Balance at Sep. 30, 2023			5,222	3,098	2,124
Beginning Balance at Dec. 31, 2023	25,755		5,490	3,246	2,244
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	658	658	264		264
Common stock dividends	(381)	(381)	(92)		(92)
Ending Balance at Mar. 31, 2024			5,662	3,246	2,416
Beginning Balance at Dec. 31, 2023	25,755		5,490	3,246	2,244
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,813		353
Ending Balance at Sep. 30, 2024	26,622		5,804	3,483	2,321
Beginning Balance at Mar. 31, 2024			5,662	3,246	2,416
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	448	448	44		44
Common stock dividends	(380)	(380)	(92)		(92)
Contributions from parent			197	197
Ending Balance at Jun. 30, 2024			5,811	3,443	2,368
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	707	707	45		45
Common stock dividends	(381)	$ (381)	(92)		(92)
Contributions from parent			40	40
Ending Balance at Sep. 30, 2024	$ 26,622		$ 5,804	$ 3,483	$ 2,321