Consolidated Balance Sheets (Unaudited) - ACE - USD ($) shares in Millions, $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 300	$ 407
Restricted cash and cash equivalents	435	566
Accounts receivable
Customer accounts receivable	2,575	2,544
Customer allowance for credit losses	(341)	(327)
Customer accounts receivable, net	2,234	2,217
Other accounts receivable	1,168	1,426
Other allowance for credit losses	(88)	(82)
Other accounts receivable, net	1,080	1,344
Inventories, net
Fossil fuel	105	208
Materials and supplies	657	547
Regulatory assets	2,307	1,641
Other	401	406
Total current assets	7,519	7,336
Property, plant and equipment, net	72,458	69,076
Deferred debits and other assets
Regulatory assets	8,128	8,037
Goodwill	6,630	6,630
Receivable related to Regulatory Agreement Units	2,923	2,897
Investments	246	232
Other	1,355	1,141
Total deferred debits and other assets	19,282	18,937
Total assets	99,259	95,349
Current liabilities
Short-term borrowings	1,720	2,586
Long-term debt due within one year	1,654	1,802
Accrued expenses	1,315	1,226
Regulatory liabilities	437	437
Mark-to-market derivative liabilities	44	8
Unamortized energy contract liabilities	8	10
Other	933	1,155
Total current liabilities	8,800	10,611
Long-term debt	39,431	35,272
Long-term debt to financing trusts	390	390
Deferred credits and other liabilities
Deferred income taxes and unamortized investment tax credits	11,792	11,250
Regulatory liabilities	9,236	9,112
Asset retirement obligations	269	269
Pension obligations	1,085	1,109
Non-pension postretirement benefit obligations	515	507
Mark-to-market derivative liabilities	113	83
Unamortized energy contract liabilities	29	35
Other	2,129	1,967
Total deferred credits and other liabilities	25,168	24,332
Total liabilities	73,789	70,605
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)	995	994
Shareholders’ equity
Common stock	$ 20,956	$ 20,908
Treasury stock, common (in shares)	2	2
Treasury stock, at cost	$ (123)	$ (123)
Accumulated other comprehensive loss, net	(596)	(638)
Retained earnings	5,233	4,597
Total shareholders’ equity	25,470	24,744
Members' Equity [Abstract]
Total liabilities and shareholders’ equity	99,259	95,349
Related Party
Current liabilities
Accounts payable	5	5
Long-term debt to financing trusts	390	390
Nonrelated Party
Current liabilities
Accounts payable	2,684	3,382
Atlantic City Electric Company
Current assets
Cash and cash equivalents	14	72
Restricted cash and cash equivalents	0	0
Accounts receivable
Customer accounts receivable	235	179
Customer allowance for credit losses	(39)	(41)
Customer accounts receivable, net	196	138
Other accounts receivable	84	70
Other allowance for credit losses	(13)	(14)
Other accounts receivable, net	71	56
Inventories, net
Inventories, net	54	43
Prepaid utility taxes	15	0
Regulatory assets	113	130
Other	5	3
Total current assets	471	443
Property, plant and equipment, net	4,155	3,990
Deferred debits and other assets
Regulatory assets	490	494
Prepaid pension asset	7	18
Total deferred debits and other assets	529	546
Total assets	5,155	4,979
Current liabilities
Short-term borrowings	173	0
Long-term debt due within one year	153	3
Accrued expenses	51	47
Customer deposits	23	21
Regulatory liabilities	9	26
PPA termination obligation	61	87
Total current liabilities	673	474
Long-term debt	1,680	1,754
Deferred credits and other liabilities
Deferred income taxes and unamortized investment tax credits	766	734
Regulatory liabilities	144	156
Non-pension postretirement benefit obligations	6	8
Other	57	100
Total deferred credits and other liabilities	973	998
Total liabilities	3,326	3,226
Commitments and contingencies
Shareholders’ equity
Common stock	1,830	1,765
Retained earnings	(1)	(12)
Total shareholders’ equity	1,829	1,753
Members' Equity [Abstract]
Total liabilities and shareholders’ equity	5,155	4,979
Atlantic City Electric Company | Related Party
Accounts receivable
Receivables from affiliates	3	1
Current liabilities
Accounts payable	22	26
Other	17	0
Atlantic City Electric Company | Nonrelated Party
Deferred debits and other assets
Other	32	34
Current liabilities
Accounts payable	149	206
Other	$ 15	$ 58