Balance Sheets (Unaudited) - BGE - USD ($) shares in Millions, $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Current assets
Cash and cash equivalents	$ 720	$ 445
Restricted cash and cash equivalents	489	482
Accounts receivable
Customer accounts receivable	2,896	2,659
Customer allowance for credit losses	(346)	(317)
Customer accounts receivable, net	2,550	2,342
Other accounts receivable	1,131	1,101
Other allowance for credit losses	(96)	(82)
Other accounts receivable, net	1,035	1,019
Inventories, net
Fossil fuel	37	94
Materials and supplies	751	707
Regulatory assets	2,035	2,215
Other	595	473
Total current assets	8,212	7,777
Property, plant and equipment, net	74,604	73,593
Deferred debits and other assets
Regulatory assets	8,701	8,698
Goodwill	6,630	6,630
Receivable related to Regulatory Agreement Units	3,382	3,232
Investments	263	251
Other	1,419	1,365
Total deferred debits and other assets	20,395	20,176
Total assets	103,211	101,546
Current liabilities
Short-term borrowings	2,206	2,523
Long-term debt due within one year	503	1,403
Accrued expenses	1,076	1,375
Customer deposits	419	411
Regulatory liabilities	400	389
Mark-to-market derivative liabilities	29	74
Unamortized energy contract liabilities	7	8
Other	516	557
Total current liabilities	7,975	9,591
Long-term debt	42,271	39,692
Long-term debt to financing trusts	390	390
Deferred credits and other liabilities
Deferred income taxes and unamortized investment tax credits	12,199	11,956
Regulatory liabilities	9,706	9,576
Asset retirement obligations	270	267
Pension obligations	1,569	1,571
Non-pension postretirement benefit obligations	523	527
Mark-to-market derivative liabilities	80	106
Unamortized energy contract liabilities	25	27
Other	2,142	2,088
Total deferred credits and other liabilities	26,514	26,118
Total liabilities	77,150	75,791
Commitments and contingencies
Common stock (in dollars)	$ 0	$ 0
Common stock, shares authorized (in shares)	2,000	2,000
Common stock, shares outstanding (in shares)	1,000	999
Shareholders’ equity
Common stock	$ 21,129	$ 21,114
Treasury stock, common (in shares)	2	2
Treasury stock, at cost	$ (123)	$ (123)
Accumulated other comprehensive loss, net	(712)	(726)
Retained earnings	5,767	5,490
Total shareholders’ equity	26,061	25,755
Members' Equity [Abstract]
Total liabilities and shareholders’ equity	103,211	101,546
Related Party
Current liabilities
Accounts payable	5	5
Long-term debt to financing trusts	390	390
Nonrelated Party
Current liabilities
Accounts payable	2,814	2,846
Baltimore Gas and Electric Company
Current assets
Cash and cash equivalents	27	47
Restricted cash and cash equivalents	0	1
Accounts receivable
Customer accounts receivable	618	527
Customer allowance for credit losses	(52)	(46)
Customer accounts receivable, net	566	481
Other accounts receivable	104	106
Other allowance for credit losses	(7)	(7)
Other accounts receivable, net	97	99
Inventories, net
Fossil fuel	13	35
Materials and supplies	82	74
Prepaid utility taxes	54	56
Regulatory assets	237	229
Other	18	25
Total current assets	1,094	1,047
Property, plant and equipment, net	12,291	12,102
Deferred debits and other assets
Regulatory assets	742	727
Investments	10	9
Prepaid pension asset	253	248
Total deferred debits and other assets	1,059	1,035
Total assets	14,444	14,184
Current liabilities
Short-term borrowings	406	336
Accrued expenses	249	203
Customer deposits	115	114
Regulatory liabilities	26	27
Total current liabilities	1,195	1,093
Long-term debt	4,602	4,602
Deferred credits and other liabilities
Deferred income taxes and unamortized investment tax credits	2,016	1,945
Regulatory liabilities	699	773
Asset retirement obligations	32	32
Non-pension postretirement benefit obligations	153	158
Other	85	91
Total deferred credits and other liabilities	2,985	2,999
Total liabilities	8,782	8,694
Commitments and contingencies
Shareholders’ equity
Common stock	3,246	3,246
Retained earnings	2,416	2,244
Total shareholders’ equity	5,662	5,490
Members' Equity [Abstract]
Total liabilities and shareholders’ equity	14,444	14,184
Baltimore Gas and Electric Company | Related Party
Accounts receivable
Receivables from affiliates	0	0
Current liabilities
Accounts payable	37	35
Baltimore Gas and Electric Company | Nonrelated Party
Deferred debits and other assets
Other	54	51
Current liabilities
Accounts payable	338	344
Other	$ 24	$ 34