Consolidated Balance Sheets - USD ($) $ in Millions		Dec. 31, 2022	Dec. 31, 2021
Current assets
Cash and cash equivalents		$ 407	$ 672
Restricted cash and cash equivalents		566	321
Accounts receivable
Customer accounts receivable		2,544	2,189
Customer allowance for credit losses		(327)	(320)
Customer accounts receivable, net		2,217	1,869
Other accounts receivable		1,426	1,068
Other allowance for credit losses		(82)	(72)
Other accounts receivable, net		1,344	996
Inventories, net
Fossil fuel and emission allowances		208	105
Materials and supplies		547	476
Regulatory assets, current		1,641	1,296
Other		406	387
Currents assets of discontinued operations		0	7,835
Total current assets		7,336	13,957
Accumulated depreciation and amortization		15,930	14,430
Property, plant and equipment, net		69,076	64,558
Deferred debits and other assets
Regulatory assets, noncurrent		8,037	8,224
Goodwill		6,630	6,630
Receivable related to Regulatory Agreement Units		2,897	0
Investments		232	250
Other		1,141	885
Property, plant, and equipment, deferred debits, and other assets of discontinued operations		0	38,509
Total deferred debits and other assets		18,937	54,498
Total assets		95,349	133,013
Current liabilities
Short-term borrowings		2,586	1,248
Long-term debt due within one year		1,802	2,153
Accounts payable		3,382	2,379
Accrued expenses		1,226	1,137
Payables to affiliates, current		5	5
Regulatory liabilities, current		437	376
Mark-to-market derivative liabilities, current		8	18
Unamortized energy contract liabilities, current		10	89
Other		1,155	766
Current liabilities of discontinued operations		0	7,940
Total current liabilities		10,611	16,111
Long-term debt		35,272	30,749
Long-term debt to financing trusts		390	390
Deferred credits and other liabilities
Deferred income taxes and unamortized investment tax credits		11,250	10,611
Regulatory liabilities, noncurrent		9,112	9,628
Asset retirement obligations, noncurrent		269	271
Pension obligations		1,109	2,051
Non-pension postretirement benefits obligations		507	811
Mark-to-market derivative liabilities, noncurrent		83	201
Unamortized energy contract liabilities, noncurrent		35	146
Other		1,967	1,573
Long-term debt, deferred credits, and other liabilities of discontinued operations		0	25,676
Total deferred credits and other liabilities		24,332	50,968
Total liabilities		70,605	98,218
Commitments and contingencies
Shareholders’ equity
Common Stock, No Par Value		$ 0	$ 0
Common Stock, Shares Authorized		2,000,000,000	2,000,000,000
Common Stock, Shares, Outstanding		994,000,000	979,000,000
Common stock		$ 20,908	$ 20,324
Treasury Stock, Shares		2,000,000	2,000,000
Treasury stock, at cost		$ (123)	$ (123)
Retained earnings/Undistributed earnings (losses)		4,597	16,942
Accumulated other comprehensive loss, net		(638)	(2,750)
Total shareholders’ equity		24,744	34,393
Member’s equity
Noncontrolling interests		0	402
Total equity		24,744	34,795
Total liabilities and equity		95,349	133,013
Commonwealth Edison Co [Member]
Current assets
Cash and cash equivalents		67	131
Restricted cash and cash equivalents		327	210
Accounts receivable
Customer accounts receivable		558	647
Customer allowance for credit losses		(59)	(73)
Customer accounts receivable, net		499	574
Other accounts receivable		441	227
Other allowance for credit losses		(17)	(17)
Other accounts receivable, net		424	210
Receivables from affiliates, current		3	16
Inventories, net
Inventories, net		196	170
Regulatory assets, current		775	335
Other		92	76
Total current assets		2,383	1,722
Accumulated depreciation and amortization		6,673	6,099
Property, plant and equipment, net		27,513	25,995
Deferred debits and other assets
Regulatory assets, noncurrent		2,667	1,870
Goodwill		2,625	2,625
Receivable from affiliates, noncurrent		0	2,761
Receivable related to Regulatory Agreement Units		2,660	0
Investments		6	6
Prepaid pension asset		1,206	1,086
Other		601	405
Total deferred debits and other assets		9,765	8,753
Total assets		39,661	36,470
Current liabilities
Short-term borrowings		577	0
Accounts payable		1,010	647
Accrued expenses		415	384
Payables to affiliates, current		74	121
Customer deposits		108	99
Regulatory liabilities, current		226	185
Mark-to-market derivative liabilities, current		5	18
Other		191	133
Total current liabilities		2,606	1,587
Long-term debt		10,518	9,773
Long-term debt to financing trusts		205	205
Deferred credits and other liabilities
Deferred income taxes and unamortized investment tax credits		5,021	4,685
Regulatory liabilities, noncurrent		6,913	6,759
Asset retirement obligations, noncurrent		148	144
Non-pension postretirement benefits obligations		165	169
Mark-to-market derivative liabilities, noncurrent		79	201
Other		642	592
Total deferred credits and other liabilities		12,968	12,550
Total liabilities		26,297	24,115
Commitments and contingencies
Shareholders’ equity
Common Stock, Par or Stated Value Per Share		$ 12.50	$ 12.50
Common Stock, Shares Authorized		250,000,000	250,000,000
Common Stock, Shares, Outstanding		127,000,000	127,000,000
Common stock		$ 1,588	$ 1,588
Retained earnings/Undistributed earnings (losses)		2,030	1,691
Other paid-in capital		9,746	9,076
Total shareholders’ equity		13,364	12,355
Member’s equity
Total liabilities and equity		39,661	36,470
PECO Energy Co [Member]
Current assets
Cash and cash equivalents		59	36
Restricted cash and cash equivalents		9	8
Accounts receivable
Customer accounts receivable		635	489
Customer allowance for credit losses		(105)	(105)
Customer accounts receivable, net		530	384
Other accounts receivable		153	116
Other allowance for credit losses		(9)	(7)
Other accounts receivable, net		144	109
Receivables from affiliates, current		4	1
Inventories, net
Fossil fuel and emission allowances		99	51
Materials and supplies		52	45
Regulatory assets, current		80	48
Other		38	29
Total current assets		1,015	711
Accumulated depreciation and amortization		4,078	3,964
Property, plant and equipment, net		12,125	11,117
Deferred debits and other assets
Regulatory assets, noncurrent		652	943
Receivable from affiliates, noncurrent		0	597
Receivable related to Regulatory Agreement Units		237	0
Investments		30	34
Prepaid pension asset		413	386
Other		30	36
Total deferred debits and other assets		1,362	1,996
Total assets		14,502	13,824
Current liabilities
Short-term borrowings		239	0
Long-term debt due within one year		50	350
Accounts payable		668	494
Accrued expenses		142	136
Payables to affiliates, current		42	70
Customer deposits		63	48
Regulatory liabilities, current		75	94
Other		32	35
Total current liabilities		1,311	1,227
Long-term debt		4,562	3,847
Long-term debt to financing trusts		184	184
Deferred credits and other liabilities
Deferred income taxes and unamortized investment tax credits		2,213	2,421
Regulatory liabilities, noncurrent		270	635
Asset retirement obligations, noncurrent		28	29
Non-pension postretirement benefits obligations		286	286
Other		85	83
Total deferred credits and other liabilities		2,882	3,454
Total liabilities		8,939	8,712
Commitments and contingencies
Shareholders’ equity
Common Stock, No Par Value		$ 0	$ 0
Common Stock, Shares Authorized		500,000,000	500,000,000
Common Stock, Shares, Outstanding		170,000,000	170,000,000
Common stock		$ 3,702	$ 3,428
Retained earnings/Undistributed earnings (losses)		1,861	1,684
Total shareholders’ equity		5,563	5,112
Member’s equity
Total liabilities and equity		14,502	13,824
Baltimore Gas and Electric Company [Member]
Current assets
Cash and cash equivalents		43	51
Restricted cash and cash equivalents		24	4
Accounts receivable
Customer accounts receivable		617	436
Customer allowance for credit losses		(54)	(38)
Customer accounts receivable, net		563	398
Other accounts receivable		132	124
Other allowance for credit losses		(10)	(9)
Other accounts receivable, net		122	115
Receivables from affiliates, current		0	1
Inventories, net
Fossil fuel and emission allowances		91	42
Materials and supplies		65	53
Prepaid utility taxes		52	49
Regulatory assets, current		177	215
Other		13	8
Total current assets		1,150	936
Accumulated depreciation and amortization		4,583	4,299
Property, plant and equipment, net		11,338	10,577
Deferred debits and other assets
Regulatory assets, noncurrent		527	477
Investments		7	14
Prepaid pension asset		291	276
Other		37	44
Total deferred debits and other assets		862	811
Total assets		13,350	12,324
Current liabilities
Short-term borrowings		408	130
Long-term debt due within one year		300	250
Accounts payable		462	349
Accrued expenses		159	176
Payables to affiliates, current		39	48
Customer deposits		105	97
Regulatory liabilities, current		47	26
Other		55	48
Total current liabilities		1,575	1,124
Long-term debt		3,907	3,711
Deferred credits and other liabilities
Deferred income taxes and unamortized investment tax credits		1,832	1,686
Regulatory liabilities, noncurrent		816	934
Asset retirement obligations, noncurrent		30	26
Non-pension postretirement benefits obligations		166	175
Other		88	98
Total deferred credits and other liabilities		2,932	2,919
Total liabilities		8,414	7,754
Commitments and contingencies
Shareholders’ equity
Common Stock, No Par Value		$ 0	$ 0
Common Stock, Shares Authorized		1,500	1,500
Common Stock, Shares, Outstanding		1,000	1,000
Common stock	[1]	$ 2,861	$ 2,575
Retained earnings/Undistributed earnings (losses)		2,075	1,995
Total shareholders’ equity		4,936	4,570
Member’s equity
Total liabilities and equity		13,350	12,324
Pepco Holdings LLC [Member]
Current assets
Cash and cash equivalents		198	136
Restricted cash and cash equivalents		175	77
Accounts receivable
Customer accounts receivable		734	616
Customer allowance for credit losses		(109)	(104)
Customer accounts receivable, net		625	512
Other accounts receivable		300	283
Other allowance for credit losses		(46)	(39)
Other accounts receivable, net		254	244
Receivables from affiliates, current		2	2
Inventories, net
Fossil fuel and emission allowances		18	11
Materials and supplies		236	209
Regulatory assets, current		455	432
Other		96	69
Total current assets		2,059	1,692
Accumulated depreciation and amortization		2,618	2,108
Property, plant and equipment, net		17,686	16,498
Deferred debits and other assets
Regulatory assets, noncurrent		1,610	1,794
Goodwill		4,005	4,005
Investments		138	145
Prepaid pension asset		353	344
Other		231	266
Total deferred debits and other assets		6,337	6,554
Total assets		26,082	24,744
Current liabilities
Short-term borrowings		414	468
Long-term debt due within one year		591	399
Accounts payable		771	578
Accrued expenses		260	281
Payables to affiliates, current		66	104
Borrowings from Exelon/PHI intercompany money pool		44	7
Customer deposits		88	81
Regulatory liabilities, current		76	68
Unamortized energy contract liabilities, current		10	89
Contractual Obligation		87	0
Other		330	171
Total current liabilities		2,737	2,246
Long-term debt		7,529	7,148
Deferred credits and other liabilities
Deferred income taxes and unamortized investment tax credits		2,895	2,675
Regulatory liabilities, noncurrent		1,011	1,238
Asset retirement obligations, noncurrent		59	70
Non-pension postretirement benefits obligations		50	66
Unamortized energy contract liabilities, noncurrent		35	146
Other		536	570
Total deferred credits and other liabilities		4,586	4,765
Total liabilities		14,852	14,159
Commitments and contingencies
Shareholders’ equity
Retained earnings/Undistributed earnings (losses)		(352)	(210)
Member’s equity
Membership interest		11,582	10,795
Total member’s equity		11,230	10,585
Total equity		11,230	10,585
Total liabilities and equity		26,082	24,744
Potomac Electric Power Company [Member]
Current assets
Cash and cash equivalents		45	34
Restricted cash and cash equivalents		54	34
Accounts receivable
Customer accounts receivable		351	277
Customer allowance for credit losses		(47)	(37)
Customer accounts receivable, net		304	240
Other accounts receivable		180	160
Other allowance for credit losses		(25)	(16)
Other accounts receivable, net		155	144
Receivables from affiliates, current		0	0
Inventories, net
Inventories, net		135	119
Regulatory assets, current		235	213
Other		53	25
Total current assets		981	809
Accumulated depreciation and amortization		4,067	3,875
Property, plant and equipment, net		8,794	8,104
Deferred debits and other assets
Regulatory assets, noncurrent		437	532
Investments		119	120
Prepaid pension asset		273	279
Other		53	59
Total deferred debits and other assets		882	990
Total assets		10,657	9,903
Current liabilities
Short-term borrowings		299	175
Long-term debt due within one year		4	313
Accounts payable		382	272
Accrued expenses		125	160
Payables to affiliates, current		34	59
Customer deposits		39	35
Regulatory liabilities, current		6	14
Merger related obligation		26	27
Other		93	55
Total current liabilities		1,008	1,110
Long-term debt		3,747	3,132
Deferred credits and other liabilities
Deferred income taxes and unamortized investment tax credits		1,382	1,275
Regulatory liabilities, noncurrent		455	549
Asset retirement obligations, noncurrent		39	45
Non-pension postretirement benefits obligations		0	3
Other		244	314
Total deferred credits and other liabilities		2,120	2,186
Total liabilities		6,875	6,428
Commitments and contingencies
Shareholders’ equity
Common Stock, Par or Stated Value Per Share		$ 0.01	$ 0.01
Common Stock, Shares Authorized		200,000,000	200,000,000
Common Stock, Shares, Outstanding		100	100
Common stock	[2]	$ 2,767	$ 2,302
Retained earnings/Undistributed earnings (losses)		1,015	1,173
Total shareholders’ equity		3,782	3,475
Member’s equity
Total liabilities and equity		10,657	9,903
Delmarva Power & Light Company [Member]
Current assets
Cash and cash equivalents		31	28
Restricted cash and cash equivalents		121	43
Accounts receivable
Customer accounts receivable		204	149
Customer allowance for credit losses		(21)	(18)
Customer accounts receivable, net		183	131
Other accounts receivable		52	58
Other allowance for credit losses		(7)	(8)
Other accounts receivable, net		45	50
Receivables from affiliates, current		0	1
Inventories, net
Fossil fuel and emission allowances		18	11
Materials and supplies		58	54
Prepaid utility taxes		23	20
Regulatory assets, current		80	68
Other		14	16
Total current assets		573	422
Accumulated depreciation and amortization		1,772	1,635
Property, plant and equipment, net		4,820	4,560
Deferred debits and other assets
Regulatory assets, noncurrent		202	212
Prepaid pension asset		153	157
Other		54	61
Total deferred debits and other assets		409	430
Total assets		5,802	5,412
Current liabilities
Short-term borrowings		115	149
Long-term debt due within one year		584	83
Accounts payable		172	131
Accrued expenses		41	40
Payables to affiliates, current		22	33
Customer deposits		29	28
Regulatory liabilities, current		44	25
Other		136	59
Total current liabilities		1,143	548
Long-term debt		1,354	1,727
Deferred credits and other liabilities
Deferred income taxes and unamortized investment tax credits		869	803
Regulatory liabilities, noncurrent		380	441
Asset retirement obligations, noncurrent		13	16
Non-pension postretirement benefits obligations		9	11
Other		84	89
Total deferred credits and other liabilities		1,355	1,360
Total liabilities		3,852	3,635
Commitments and contingencies
Shareholders’ equity
Common Stock, Par or Stated Value Per Share		$ 2.25	$ 2.25
Common Stock, Shares Authorized		1,000	1,000
Common Stock, Shares, Outstanding		1,000	1,000
Common stock	[3]	$ 1,356	$ 1,209
Retained earnings/Undistributed earnings (losses)		594	568
Total shareholders’ equity		1,950	1,777
Member’s equity
Total liabilities and equity		5,802	5,412
Atlantic City Electric Company [Member]
Current assets
Cash and cash equivalents		72	29
Restricted cash and cash equivalents		0	0
Accounts receivable
Customer accounts receivable		179	190
Customer allowance for credit losses		(41)	(49)
Customer accounts receivable, net		138	141
Other accounts receivable		70	76
Other allowance for credit losses		(14)	(15)
Other accounts receivable, net		56	61
Receivables from affiliates, current		1	2
Inventories, net
Inventories, net		43	36
Regulatory assets, current		130	61
Other		3	3
Total current assets		443	333
Accumulated depreciation and amortization		1,551	1,420
Property, plant and equipment, net		3,990	3,729
Deferred debits and other assets
Regulatory assets, noncurrent		494	430
Prepaid pension asset		18	27
Other		34	37
Total deferred debits and other assets		546	494
Total assets		4,979	4,556
Current liabilities
Short-term borrowings		0	144
Long-term debt due within one year		3	3
Accounts payable		206	165
Accrued expenses		47	44
Payables to affiliates, current		26	31
Customer deposits		21	18
Regulatory liabilities, current		26	28
Contractual Obligation		87	0
Other		58	12
Total current liabilities		474	445
Long-term debt		1,754	1,579
Deferred credits and other liabilities
Deferred income taxes and unamortized investment tax credits		734	682
Regulatory liabilities, noncurrent		156	214
Non-pension postretirement benefits obligations		8	12
Other		100	49
Total deferred credits and other liabilities		998	957
Total liabilities		3,226	2,981
Commitments and contingencies
Shareholders’ equity
Common Stock, Par or Stated Value Per Share		$ 3.00	$ 3.00
Common Stock, Shares Authorized		25,000,000	25,000,000
Common Stock, Shares, Outstanding		9,000,000	9,000,000
Common stock		$ 1,765	$ 1,590
Retained earnings/Undistributed earnings (losses)		(12)	(15)
Total shareholders’ equity		1,753	1,575
Member’s equity
Total liabilities and equity		$ 4,979	$ 4,556

[1] In millions, shares round to zero. Number of shares is 1,500 authorized and 1,000 outstanding as of December 31, 2022 and 2021.

[2] In millions, shares round to zero. Number of shares is 100 outstanding as of December 31, 2022 and 2021.

[3] In millions, shares round to zero. Number of shares is 1,000 authorized and 1,000 outstanding as of December 31, 2022 and 2021.