Exelon (EXC) 10-K 12 Feb 25 2024 FY Annual report Financial data

Cover Page

Cover Page - USD ($)	12 Months Ended
	Dec. 31, 2024	Jan. 31, 2025	Jun. 30, 2024
Cover Page Details
Document Type	10-K
Amendment Flag	false
Document Annual Report	true
Document Period End Date	Dec. 31, 2024
Document Transition Report	false
Entity File Number	001-16169
Entity Registrant Name	EXELON CORPORATION
Entity Tax Identification Number	23-2990190
Entity Incorporation, State or Country Code	PA
Entity Address, Address Line One	10 South Dearborn Street
Entity Address, Address Line Two	P.O. Box 805379
Entity Address, City or Town	Chicago
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60680-5379
City Area Code	(800)
Local Phone Number	483-3220
Title of 12(b) Security	Common Stock, without par value
Trading Symbol	EXC
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction	true
Document Financial Statement Restatement Recovery Analysis	true
Entity Shell Company	false
Entity Public Float			$ 34,615,866,949
Entity Common Stock Shares Outstanding		1,005,217,157
Documents Incorporated by Reference	Portions of the Exelon Proxy Statement for the 2025 Annual Meeting of Shareholders and the Commonwealth Edison Company 2025 Information Statement are incorporated by reference in Part III.
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
Entity Central Index Key	0001109357
Commonwealth Edison Co
Cover Page Details
Document Type	10-K
Amendment Flag	false
Document Annual Report	true
Document Period End Date	Dec. 31, 2024
Document Transition Report	false
Entity File Number	001-01839
Entity Registrant Name	COMMONWEALTH EDISON COMPANY
Entity Tax Identification Number	36-0938600
Entity Incorporation, State or Country Code	IL
Entity Address, Address Line One	10 South Dearborn Street
Entity Address, City or Town	Chicago
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60603-2300
City Area Code	(312)
Local Phone Number	394-4321
Title of 12(g) Security	Common Stock Purchase Warrants (1971 Warrants and Series B Warrants)
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Common Stock Shares Outstanding		127,021,417
Documents Incorporated by Reference	Portions of the Exelon Proxy Statement for the 2025 Annual Meeting of Shareholders and the Commonwealth Edison Company 2025 Information Statement are incorporated by reference in Part III.
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
Entity Central Index Key	0000022606
PECO Energy Co
Cover Page Details
Document Type	10-K
Amendment Flag	false
Document Annual Report	true
Document Period End Date	Dec. 31, 2024
Document Transition Report	false
Entity File Number	000-16844
Entity Registrant Name	PECO ENERGY COMPANY
Entity Tax Identification Number	23-0970240
Entity Incorporation, State or Country Code	PA
Entity Address, Address Line One	P.O. Box 8699
Entity Address, Address Line Two	2301 Market Street
Entity Address, City or Town	Philadelphia
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	19101-8699
City Area Code	(215)
Local Phone Number	841-4000
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Common Stock Shares Outstanding		170,478,507
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
Entity Central Index Key	0000078100
Baltimore Gas and Electric Company
Cover Page Details
Document Type	10-K
Amendment Flag	false
Document Annual Report	true
Document Period End Date	Dec. 31, 2024
Document Transition Report	false
Entity File Number	001-01910
Entity Registrant Name	BALTIMORE GAS AND ELECTRIC COMPANY
Entity Tax Identification Number	52-0280210
Entity Incorporation, State or Country Code	MD
Entity Address, Address Line One	2 Center Plaza
Entity Address, Address Line Two	110 West Fayette Street
Entity Address, City or Town	Baltimore
Entity Address, State or Province	MD
Entity Address, Postal Zip Code	21201-3708
City Area Code	(410)
Local Phone Number	234-5000
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction	true
Document Financial Statement Restatement Recovery Analysis	true
Entity Shell Company	false
Entity Common Stock Shares Outstanding		1,000
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
Entity Central Index Key	0000009466
Pepco Holdings LLC
Cover Page Details
Document Type	10-K
Amendment Flag	false
Document Annual Report	true
Document Period End Date	Dec. 31, 2024
Document Transition Report	false
Entity File Number	001-31403
Entity Registrant Name	PEPCO HOLDINGS LLC
Entity Tax Identification Number	52-2297449
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	701 Ninth Street, N.W.
Entity Address, City or Town	Washington
Entity Address, State or Province	DC
Entity Address, Postal Zip Code	20068-0001
City Area Code	(202)
Local Phone Number	872-2000
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction	true
Document Financial Statement Restatement Recovery Analysis	true
Entity Shell Company	false
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
Entity Central Index Key	0001135971
Potomac Electric Power Company
Cover Page Details
Document Type	10-K
Amendment Flag	false
Document Annual Report	true
Document Period End Date	Dec. 31, 2024
Document Transition Report	false
Entity File Number	001-01072
Entity Registrant Name	POTOMAC ELECTRIC POWER COMPANY
Entity Tax Identification Number	53-0127880
Entity Address, Address Line One	701 Ninth Street, N.W.
Entity Address, City or Town	Washington
Entity Address, State or Province	DC
Entity Address, Postal Zip Code	20068-0001
City Area Code	(202)
Local Phone Number	872-2000
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction	true
Document Financial Statement Restatement Recovery Analysis	true
Entity Shell Company	false
Entity Common Stock Shares Outstanding		100
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
Entity Central Index Key	0000079732
Delmarva Power & Light Company
Cover Page Details
Document Type	10-K
Amendment Flag	false
Document Annual Report	true
Document Period End Date	Dec. 31, 2024
Document Transition Report	false
Entity File Number	001-01405
Entity Registrant Name	DELMARVA POWER & LIGHT COMPANY
Entity Tax Identification Number	51-0084283
Entity Address, Address Line One	500 North Wakefield Drive
Entity Address, City or Town	Newark
Entity Address, State or Province	DE
Entity Address, Postal Zip Code	19702-5440
City Area Code	(202)
Local Phone Number	872-2000
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction	true
Document Financial Statement Restatement Recovery Analysis	true
Entity Shell Company	false
Entity Common Stock Shares Outstanding		1,000
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
Entity Central Index Key	0000027879
Atlantic City Electric Company
Cover Page Details
Document Type	10-K
Amendment Flag	false
Document Annual Report	true
Document Period End Date	Dec. 31, 2024
Document Transition Report	false
Entity File Number	001-03559
Entity Registrant Name	ATLANTIC CITY ELECTRIC COMPANY
Entity Tax Identification Number	21-0398280
Entity Incorporation, State or Country Code	NJ
Entity Address, Address Line One	500 North Wakefield Drive
Entity Address, City or Town	Newark
Entity Address, State or Province	DE
Entity Address, Postal Zip Code	19702-5440
City Area Code	(202)
Local Phone Number	872-2000
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Common Stock Shares Outstanding		8,546,017
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
Entity Central Index Key	0000008192
VIRGINIA | Potomac Electric Power Company
Cover Page Details
Entity Incorporation, State or Country Code	VA
VIRGINIA | Delmarva Power & Light Company
Cover Page Details
Entity Incorporation, State or Country Code	VA
DELAWARE | Delmarva Power & Light Company
Cover Page Details
Entity Incorporation, State or Country Code	DE
DISTRICT OF COLUMBIA | Potomac Electric Power Company
Cover Page Details
Entity Incorporation, State or Country Code	DC

Auditor Information

Auditor Information	12 Months Ended
	Dec. 31, 2024
Auditor [Line Items]
Auditor Name	PricewaterhouseCoopers LLP
Auditor Location	Chicago, Illinois
Auditor Firm ID	238

Consolidated Statements of Oper

Consolidated Statements of Operations and Comprehensive Income - Exelon - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating revenues
Revenues from alternative revenue programs	$ (92)	$ 696	$ 161
Total operating revenues	23,028	21,727	19,078
Operating expenses
Operating and maintenance	4,940	4,559	4,673
Depreciation and amortization	3,594	3,506	3,325
Taxes other than income taxes	1,504	1,408	1,390
Total operating expenses	18,721	17,714	15,761
Gain (loss) on sale of assets and businesses	12	10	(2)
Operating income (loss)	4,319	4,023	3,315
Other income and (deductions)
Interest expense, net	(1,889)	(1,704)	(1,422)
Other, net	262	408	535
Total other income and (deductions)	(1,652)	(1,321)	(912)
Income (loss) before income taxes	2,667	2,702	2,403
Income taxes	207	374	349
Net income from continuing operations after income taxes	2,460	2,328	2,054
Net income from discontinued operations after income taxes	0	0	117
Net income	2,460	2,328	2,171
Net income attributable to noncontrolling interests	0	0	1
Net income attributable to common shareholders	2,460	2,328	2,170
Net income from continuing operations	2,460	2,328	2,054
Net income from discontinued operations	0	0	116
Other comprehensive income (loss), net of income taxes
Prior service benefits reclassified to periodic benefit cost	0	0	(1)
Actuarial losses reclassified to periodic benefit cost	28	26	42
Pension and non-pension postretirement benefit plans valuation adjustments	(70)	(109)	46
Unrealized gain (loss) on cash flow hedges	48	(5)	2
Other comprehensive income (loss)	6	(88)	89
Comprehensive income (loss)	2,466	2,240	2,260
Comprehensive income attributable to noncontrolling interests	0	0	1
Comprehensive income attributable to common shareholders	$ 2,466	$ 2,240	$ 2,259
Average shares of common stock outstanding:
Basic Average Number of Shares Outstanding (in shares)	1,003	996	986
Assumed Exercise and/or Distributions of Stock-Based Awards (in shares)	0	1	1
Diluted Average Number of Shares Outstanding (in shares)	1,003	997	987
Income (Loss) from Continuing Operations, Per Basic Share (in dollars per share)	$ 2.45	$ 2.34	$ 2.08
Income (Loss) from Continuing Operations, Per Diluted Share (in dollars per share)	2.45	2.34	2.08
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share (in dollars per share)	0	0	0.12
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share (in dollars per share)	$ 0	$ 0	$ 0.12
Related Party
Operating expenses
Purchased power and/or fuel from affiliates	$ 0	$ 0	$ 159
Other income and (deductions)
Interest expense to affiliates, net	(25)	(25)	(25)
Electricity, US Regulated
Operating revenues
Operating revenues	21,338	19,267	16,899
Operating expenses
Purchased power and/or fuel	8,214	7,648	5,380
Natural Gas, US Regulated
Operating revenues
Operating revenues	1,782	1,764	2,018
Operating expenses
Purchased power and/or fuel	$ 469	$ 593	$ 834

Consolidated Statements of Op_2

Consolidated Statements of Operations and Comprehensive Income - ComEd - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating revenues
Revenues from alternative revenue programs	$ (92)	$ 696	$ 161
Total operating revenues	23,028	21,727	19,078
Operating expenses
Operating and maintenance	4,940	4,559	4,673
Depreciation and amortization	3,594	3,506	3,325
Taxes other than income taxes	1,504	1,408	1,390
Total operating expenses	18,721	17,714	15,761
Gain (loss) on sale of assets and businesses	12	10	(2)
Operating income (loss)	4,319	4,023	3,315
Other income and (deductions)
Interest expense, net	(1,889)	(1,704)	(1,422)
Other, net	262	408	535
Total other income and (deductions)	(1,652)	(1,321)	(912)
Income before income taxes	2,667	2,702	2,403
Income taxes	207	374	349
Net income	2,460	2,328	2,171
Comprehensive income	2,466	2,240	2,260
Related Party
Operating expenses
Purchased power and/or fuel from affiliates	0	0	159
Other income and (deductions)
Interest expense to affiliates, net	(25)	(25)	(25)
Commonwealth Edison Co
Operating revenues
Revenues from alternative revenue programs	(151)	556	267
Operating revenues from affiliates	8	16	16
Total operating revenues	8,219	7,844	5,761
Operating expenses
Operating and maintenance	1,284	1,096	1,094
Depreciation and amortization	1,514	1,403	1,323
Taxes other than income taxes	376	369	374
Total operating expenses	6,635	6,038	4,218
Gain (loss) on sale of assets and businesses	5	0	(2)
Operating income (loss)	1,589	1,806	1,541
Other income and (deductions)
Interest expense, net	(487)	(464)	(401)
Other, net	94	75	54
Total other income and (deductions)	(407)	(402)	(360)
Income before income taxes	1,182	1,404	1,181
Income taxes	116	314	264
Net income	1,066	1,090	917
Comprehensive income	1,066	1,090	917
Commonwealth Edison Co | Related Party
Operating revenues
Operating revenues from affiliates	8	16	16
Operating expenses
Purchased power and/or fuel from affiliates	0	0	59
Operating and maintenance from affiliates	419	354	318
Other income and (deductions)
Interest expense to affiliates, net	(14)	(13)	(13)
Electricity, US Regulated
Operating revenues
Operating revenues	21,338	19,267	16,899
Operating expenses
Purchased power and/or fuel	8,214	7,648	5,380
Electricity, US Regulated | Commonwealth Edison Co
Operating revenues
Operating revenues	8,362	7,272	5,478
Operating expenses
Purchased power and/or fuel	3,042	2,816	1,050
Natural Gas, US Regulated
Operating revenues
Operating revenues	1,782	1,764	2,018
Operating expenses
Purchased power and/or fuel	$ 469	$ 593	$ 834

Consolidated Statements of Op_3

Consolidated Statements of Operations and Comprehensive Income - PECO - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating revenues
Revenues from alternative revenue programs	$ (92)	$ 696	$ 161
Total operating revenues	23,028	21,727	19,078
Operating expenses
Operating and maintenance	4,940	4,559	4,673
Depreciation and amortization	3,594	3,506	3,325
Taxes other than income taxes	1,504	1,408	1,390
Total operating expenses	18,721	17,714	15,761
Gain (loss) on sale of assets and businesses	12	10	(2)
Operating income	4,319	4,023	3,315
Other income and (deductions)
Interest expense, net	(1,889)	(1,704)	(1,422)
Other, net	262	408	535
Total other income and (deductions)	(1,652)	(1,321)	(912)
Income before income taxes	2,667	2,702	2,403
Income taxes	207	374	349
Net income	2,460	2,328	2,171
Comprehensive income	2,466	2,240	2,260
Related Party
Operating expenses
Purchased power and/or fuel from affiliates	0	0	159
Other income and (deductions)
Interest expense to affiliates, net	(25)	(25)	(25)
PECO Energy Co
Operating revenues
Revenues from alternative revenue programs	6	(7)	2
Total operating revenues	3,973	3,894	3,903
Operating expenses
Operating and maintenance	875	786	791
Depreciation and amortization	428	397	373
Taxes other than income taxes	218	202	202
Total operating expenses	3,243	3,146	3,102
Gain (loss) on sale of assets and businesses	4	0	0
Operating income	734	748	801
Other income and (deductions)
Interest expense, net	(221)	(192)	(165)
Other, net	37	36	31
Total other income and (deductions)	(195)	(165)	(146)
Income before income taxes	539	583	655
Income taxes	(12)	20	79
Net income	551	563	576
Comprehensive income	551	563	576
PECO Energy Co | Related Party
Operating revenues
Operating revenues from affiliates	10	9	7
Operating expenses
Purchased power and/or fuel from affiliates	0	0	33
Operating and maintenance from affiliates	245	217	201
Other income and (deductions)
Interest expense to affiliates, net	(11)	(9)	(12)
Electricity, US Regulated
Operating revenues
Operating revenues	21,338	19,267	16,899
Operating expenses
Purchased power and/or fuel	8,214	7,648	5,380
Electricity, US Regulated | PECO Energy Co
Operating revenues
Operating revenues	3,312	3,202	3,156
Operating expenses
Purchased power and/or fuel	1,265	1,270	1,160
Natural Gas, US Regulated
Operating revenues
Operating revenues	1,782	1,764	2,018
Operating expenses
Purchased power and/or fuel	469	593	834
Natural Gas, US Regulated | PECO Energy Co
Operating revenues
Operating revenues	645	690	738
Operating expenses
Purchased power and/or fuel	$ 212	$ 274	$ 342

Statements of Operations and Co

Statements of Operations and Comprehensive Income - BGE - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating revenues
Revenues from alternative revenue programs	$ (92)	$ 696	$ 161
Total operating revenues	23,028	21,727	19,078
Operating expenses
Operating and maintenance	4,940	4,559	4,673
Depreciation and amortization	3,594	3,506	3,325
Taxes other than income taxes	1,504	1,408	1,390
Total operating expenses	18,721	17,714	15,761
Gain (loss) on sale of assets and businesses	12	10	(2)
Operating income	4,319	4,023	3,315
Other income and (deductions)
Interest expense, net	(1,889)	(1,704)	(1,422)
Other, net	262	408	535
Total other income and (deductions)	(1,652)	(1,321)	(912)
Income before income taxes	2,667	2,702	2,403
Income taxes	207	374	349
Net income	2,460	2,328	2,171
Comprehensive income	2,466	2,240	2,260
Related Party
Operating expenses
Purchased power and/or fuel from affiliates	0	0	159
Baltimore Gas and Electric Company
Operating revenues
Revenues from alternative revenue programs	52	84	(47)
Total operating revenues	4,426	4,027	3,895
Operating expenses
Operating and maintenance	790	520	670
Depreciation and amortization	638	654	630
Taxes other than income taxes	345	319	302
Total operating expenses	3,670	3,245	3,376
Operating income	756	782	519
Other income and (deductions)
Interest expense, net	(216)	(182)	(152)
Other, net	36	18	21
Total other income and (deductions)	(180)	(164)	(131)
Income before income taxes	576	618	388
Income taxes	49	133	8
Net income	527	485	380
Comprehensive income	527	485	380
Baltimore Gas and Electric Company | Related Party
Operating revenues
Operating revenues from affiliates	10	9	15
Operating expenses
Purchased power and/or fuel from affiliates	0	0	18
Operating and maintenance from affiliates	246	221	207
Electricity, US Regulated
Operating revenues
Operating revenues	21,338	19,267	16,899
Operating expenses
Purchased power and/or fuel	8,214	7,648	5,380
Electricity, US Regulated | Baltimore Gas and Electric Company
Operating revenues
Operating revenues	3,407	3,065	2,890
Operating expenses
Purchased power and/or fuel	1,460	1,311	1,186
Natural Gas, US Regulated
Operating revenues
Operating revenues	1,782	1,764	2,018
Operating expenses
Purchased power and/or fuel	469	593	834
Natural Gas, US Regulated | Baltimore Gas and Electric Company
Operating revenues
Operating revenues	957	869	1,037
Operating expenses
Purchased power and/or fuel	$ 191	$ 220	$ 363

Consolidated Statements of Op_4

Consolidated Statements of Operations and Comprehensive Income - PHI - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating revenues
Revenues from alternative revenue programs	$ (92)	$ 696	$ 161
Total operating revenues	23,028	21,727	19,078
Operating expenses
Operating and maintenance	4,940	4,559	4,673
Depreciation and amortization	3,594	3,506	3,325
Taxes other than income taxes	1,504	1,408	1,390
Total operating expenses	18,721	17,714	15,761
Gain (loss) on sale of assets and businesses	12	10	(2)
Operating income	4,319	4,023	3,315
Other income and (deductions)
Interest expense, net	(1,889)	(1,704)	(1,422)
Other, net	262	408	535
Total other income and (deductions)	(1,652)	(1,321)	(912)
Income before income taxes	2,667	2,702	2,403
Income taxes	207	374	349
Net income	2,460	2,328	2,171
Comprehensive income	2,466	2,240	2,259
Related Party
Operating expenses
Purchased power from affiliates	0	0	159
Other income and (deductions)
Interest expense to affiliates, net	(25)	(25)	(25)
Pepco Holdings LLC
Operating revenues
Revenues from alternative revenue programs	1	64	(59)
Operating revenues from affiliates	10	9	10
Total operating revenues	6,448	6,026	5,565
Operating expenses
Operating and maintenance	1,046	1,110	966
Depreciation and amortization	947	990	938
Taxes other than income taxes	528	487	475
Total operating expenses	5,238	5,114	4,734
Gain (loss) on sale of assets and businesses	(1)	9	0
Operating income	1,209	921	831
Other income and (deductions)
Interest expense, net	(373)	(323)	(292)
Other, net	97	108	78
Total other income and (deductions)	(279)	(215)	(214)
Income before income taxes	930	706	617
Income taxes	189	116	9
Net income	741	590	608
Comprehensive income	741	590	608
Pepco Holdings LLC | Related Party
Operating revenues
Operating revenues from affiliates	10	9	10
Operating expenses
Purchased power from affiliates	0	0	51
Operating and maintenance from affiliates	204	179	191
Other income and (deductions)
Interest expense to affiliates, net	(3)	0	0
Electricity, US Regulated
Operating revenues
Operating revenues	21,338	19,267	16,899
Operating expenses
Purchased power and/or fuel	8,214	7,648	5,380
Electricity, US Regulated | Pepco Holdings LLC
Operating revenues
Operating revenues	6,257	5,748	5,376
Operating expenses
Purchased power and/or fuel	2,447	2,250	1,984
Natural Gas, US Regulated
Operating revenues
Operating revenues	1,782	1,764	2,018
Operating expenses
Purchased power and/or fuel	469	593	834
Natural Gas, US Regulated | Pepco Holdings LLC
Operating revenues
Operating revenues	180	205	238
Operating expenses
Purchased power and/or fuel	$ 66	$ 98	$ 129

Statements of Operations and _2

Statements of Operations and Comprehensive Income - Pepco - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating revenues
Revenues from alternative revenue programs	$ (92)	$ 696	$ 161
Total operating revenues	23,028	21,727	19,078
Operating expenses
Operating and maintenance	4,940	4,559	4,673
Depreciation and amortization	3,594	3,506	3,325
Taxes other than income taxes	1,504	1,408	1,390
Total operating expenses	18,721	17,714	15,761
Gain (loss) on sale of assets and businesses	12	10	(2)
Operating income	4,319	4,023	3,315
Other income and (deductions)
Interest expense, net	(1,889)	(1,704)	(1,422)
Other, net	262	408	535
Total other income and (deductions)	(1,652)	(1,321)	(912)
Income before income taxes	2,667	2,702	2,403
Income taxes	207	374	349
Net income	2,460	2,328	2,171
Comprehensive income	2,466	2,240	2,260
Related Party
Operating expenses
Purchased power and/or fuel from affiliates	0	0	159
Other income and (deductions)
Interest expense to affiliates, net	25	25	25
Potomac Electric Power Company
Operating revenues
Revenues from alternative revenue programs	15	22	(31)
Operating revenues from affiliates	7	9	5
Total operating revenues	3,039	2,824	2,531
Operating expenses
Operating and maintenance	283	336	284
Depreciation and amortization	407	441	417
Taxes other than income taxes	424	390	382
Total operating expenses	2,420	2,377	2,140
Gain (loss) on sale of assets and businesses	(1)	9	0
Operating income	618	456	391
Other income and (deductions)
Interest expense, net	(195)	(165)	(150)
Other, net	54	66	55
Total other income and (deductions)	(138)	(99)	(95)
Income before income taxes	480	357	296
Income taxes	90	51	(9)
Net income	390	306	305
Comprehensive income	390	306	305
Potomac Electric Power Company | Related Party
Operating revenues
Operating revenues from affiliates	7	9	5
Operating expenses
Purchased power and/or fuel from affiliates	0	0	39
Operating and maintenance from affiliates	251	236	223
Other income and (deductions)
Interest expense to affiliates, net	(3)	0	0
Electricity, US Regulated
Operating revenues
Operating revenues	21,338	19,267	16,899
Operating expenses
Purchased power and/or fuel	8,214	7,648	5,380
Electricity, US Regulated | Potomac Electric Power Company
Operating revenues
Operating revenues	3,017	2,793	2,557
Operating expenses
Purchased power and/or fuel	1,055	974	795
Natural Gas, US Regulated
Operating revenues
Operating revenues	1,782	1,764	2,018
Operating expenses
Purchased power and/or fuel	$ 469	$ 593	$ 834

Statements of Operations and _3

Statements of Operations and Comprehensive Income - DPL - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating revenues
Revenues from alternative revenue programs	$ (92)	$ 696	$ 161
Total operating revenues	23,028	21,727	19,078
Operating expenses
Operating and maintenance	4,940	4,559	4,673
Depreciation and amortization	3,594	3,506	3,325
Taxes other than income taxes	1,504	1,408	1,390
Total operating expenses	18,721	17,714	15,761
Operating income	4,319	4,023	3,315
Other income and (deductions)
Interest expense, net	(1,889)	(1,704)	(1,422)
Other, net	262	408	535
Total other income and (deductions)	(1,652)	(1,321)	(912)
Income before income taxes	2,667	2,702	2,403
Income taxes	207	374	349
Net income	2,460	2,328	2,171
Comprehensive income	2,466	2,240	2,260
Related Party
Operating expenses
Purchased power and/or fuel from affiliates	0	0	159
Other income and (deductions)
Interest expense to affiliates, net	(25)	(25)	(25)
Delmarva Power & Light Company
Operating revenues
Revenues from alternative revenue programs	(2)	15	(9)
Operating revenues from affiliates	7	8	6
Total operating revenues	1,787	1,688	1,595
Operating expenses
Operating and maintenance	196	193	183
Depreciation and amortization	245	244	232
Taxes other than income taxes	79	75	72
Total operating expenses	1,461	1,420	1,359
Operating income	326	268	236
Other income and (deductions)
Interest expense, net	(94)	(74)	(66)
Other, net	25	18	13
Total other income and (deductions)	(68)	(56)	(53)
Income before income taxes	258	212	183
Income taxes	49	35	14
Net income	209	177	169
Comprehensive income	209	177	169
Delmarva Power & Light Company | Related Party
Operating revenues
Operating revenues from affiliates	7	8	6
Operating expenses
Purchased power and/or fuel from affiliates	0	0	10
Operating and maintenance from affiliates	181	171	166
Other income and (deductions)
Interest expense to affiliates, net	1	0	0
Electricity, US Regulated
Operating revenues
Operating revenues	21,338	19,267	16,899
Operating expenses
Purchased power and/or fuel	8,214	7,648	5,380
Electricity, US Regulated | Delmarva Power & Light Company
Operating revenues
Operating revenues	1,602	1,460	1,360
Operating expenses
Purchased power and/or fuel	694	639	567
Natural Gas, US Regulated
Operating revenues
Operating revenues	1,782	1,764	2,018
Operating expenses
Purchased power and/or fuel	469	593	834
Natural Gas, US Regulated | Delmarva Power & Light Company
Operating revenues
Operating revenues	180	205	238
Operating expenses
Purchased power and/or fuel	$ 66	$ 98	$ 129

Consolidated Statements of Op_5

Consolidated Statements of Operations and Comprehensive Income - ACE - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating revenues
Revenues from alternative revenue programs	$ (92)	$ 696	$ 161
Total operating revenues	23,028	21,727	19,078
Operating expenses
Operating and maintenance	4,940	4,559	4,673
Depreciation and amortization	3,594	3,506	3,325
Taxes other than income taxes	1,504	1,408	1,390
Total operating expenses	18,721	17,714	15,761
Gain (loss) on sale of assets and businesses	12	10	(2)
Operating income	4,319	4,023	3,315
Other income and (deductions)
Interest expense, net	(1,889)	(1,704)	(1,422)
Other, net	262	408	535
Total other income and (deductions)	(1,652)	(1,321)	(912)
Income before income taxes	2,667	2,702	2,403
Income taxes	207	374	349
Net income	2,460	2,328	2,171
Comprehensive income	2,466	2,240	2,260
Related Party
Operating expenses
Purchased power and/or fuel from affiliates	0	0	159
Other income and (deductions)
Interest expense to affiliates, net	(25)	(25)	(25)
Atlantic City Electric Company
Operating revenues
Revenues from alternative revenue programs	(12)	27	(19)
Operating revenues from affiliates	2	2	2
Total operating revenues	1,628	1,522	1,431
Operating expenses
Operating and maintenance	206	233	189
Depreciation and amortization	278	283	261
Taxes other than income taxes	9	8	9
Total operating expenses	1,353	1,314	1,225
Operating income	275	208	206
Other income and (deductions)
Interest expense, net	(74)	(72)	(66)
Other, net	14	20	11
Total other income and (deductions)	(65)	(52)	(55)
Income before income taxes	210	156	151
Income taxes	55	36	3
Net income	155	120	148
Comprehensive income	155	120	148
Atlantic City Electric Company | Related Party
Operating revenues
Operating revenues from affiliates	2	2	2
Operating expenses
Purchased power and/or fuel from affiliates	0	0	2
Operating and maintenance from affiliates	162	153	142
Other income and (deductions)
Interest expense to affiliates, net	(5)	0	0
Electricity, US Regulated
Operating revenues
Operating revenues	21,338	19,267	16,899
Operating expenses
Purchased power and/or fuel	8,214	7,648	5,380
Electricity, US Regulated | Atlantic City Electric Company
Operating revenues
Operating revenues	1,638	1,493	1,448
Operating expenses
Purchased power and/or fuel	698	637	622
Natural Gas, US Regulated
Operating revenues
Operating revenues	1,782	1,764	2,018
Operating expenses
Purchased power and/or fuel	$ 469	$ 593	$ 834

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - Exelon - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Cash flows from operating activities
Net income	$ 2,460	$ 2,328	$ 2,171
Adjustments to reconcile net income to net cash flows used in operating activities:
Depreciation and amortization	3,596	3,506	3,533
Asset impairments	0	0	48
Gain on sales of assets and businesses	(12)	(10)	(8)
Deferred income taxes and amortization of investment tax credits	128	319	255
Net fair value changes related to derivatives	0	22	(53)
Net realized and unrealized gains on NDT fund investments	0	0	205
Net unrealized losses (gains) on equity investments	0	0	16
Other non-cash operating activities	592	(335)	370
Changes in assets and liabilities:
Accounts receivable	(644)	(37)	(1,222)
Inventories	(56)	(45)	(121)
Accounts payable and accrued expenses	(37)	(191)	1,318
Option premiums paid, net	0	0	(39)
Collateral (paid) received, net	33	(146)	1,248
Income taxes	(4)	48	(4)
Regulatory assets and liabilities, net	(50)	(439)	(1,326)
Pension and non-pension postretirement benefit contributions	(180)	(129)	(616)
Other assets and liabilities	(257)	(188)	(905)
Net cash flows provided by operating activities	5,569	4,703	4,870
Cash flows from investing activities
Capital expenditures	(7,097)	(7,408)	(7,147)
Proceeds from NDT fund sales	0	0	488
Investment in NDT funds	0	0	(516)
Collection of DPP	0	0	169
Proceeds from sales of assets and businesses	38	25	16
Other investing activities	17	8	0
Net cash flows used in investing activities	(7,042)	(7,375)	(6,990)
Cash flows from financing activities
Changes in short-term borrowings	(265)	(313)	986
Proceeds from short-term borrowings with maturities greater than 90 days	150	400	1,300
Repayments on short-term borrowings with maturities greater than 90 days	(549)	(150)	(1,500)
Issuance of long-term debt	4,974	5,825	6,309
Retirement of long-term debt	(1,557)	(1,713)	(2,073)
Issuance of common stock	148	140	563
Dividends paid on common stock	(1,524)	(1,433)	(1,334)
Proceeds from employee stock plans	43	41	36
Transfer of cash, restricted cash, and cash equivalents to Constellation	0	0	(2,594)
Other financing activities	(109)	(114)	(102)
Net cash flows provided by (used in) financing activities	1,311	2,683	1,591
Increase (decrease) in cash, restricted cash, and cash equivalents	(162)	11	(529)
Cash, restricted cash, and cash equivalents at beginning of period	1,101	1,090	1,619
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	939	1,101	1,090
Supplemental cash flow information
Increase (decrease) in capital expenditures not paid	301	(215)	36
Increase in DPP	0	0	348
(Decrease) Increase in PP&E Related to ARO Update	$ 16	$ (13)	$ 332

Consolidated Statements of Ca_2

Consolidated Statements of Cash Flows - ComEd - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Cash flows from operating activities
Net income	$ 2,460	$ 2,328	$ 2,171
Adjustments to reconcile net income to net cash flows used in operating activities:
Depreciation and amortization	3,596	3,506	3,533
Deferred income taxes and amortization of investment tax credits	128	319	255
Net fair value changes related to derivatives	0	(22)	53
Other non-cash operating activities	592	(335)	370
Changes in assets and liabilities:
Accounts receivable	(644)	(37)	(1,222)
Inventories	(56)	(45)	(121)
Accounts payable and accrued expenses	(37)	(191)	1,318
Collateral (paid) received, net	33	(146)	1,248
Income taxes	(4)	48	(4)
Regulatory assets and liabilities, net	(50)	(439)	(1,326)
Pension and non-pension postretirement benefit contributions	(180)	(129)	(616)
Other assets and liabilities	(257)	(188)	(905)
Net cash flows provided by operating activities	5,569	4,703	4,870
Cash flows from investing activities
Capital expenditures	(7,097)	(7,408)	(7,147)
Other investing activities	17	8	0
Net cash flows used in investing activities	(7,042)	(7,375)	(6,990)
Cash flows from financing activities
Changes in short-term borrowings	(265)	(313)	986
Proceeds from short-term borrowings with maturities greater than 90 days	150	400	1,300
Repayments on short-term borrowings with maturities greater than 90 days	(549)	(150)	(1,500)
Issuance of long-term debt	4,974	5,825	6,309
Retirement of long-term debt	(1,557)	(1,713)	(2,073)
Dividends paid on common stock	(1,524)	(1,433)	(1,334)
Other financing activities	(109)	(114)	(102)
Net cash flows provided by financing activities	1,311	2,683	1,591
(Decrease) increase in cash, restricted cash, and cash equivalents	(162)	11	(529)
Cash, restricted cash, and cash equivalents at beginning of period	1,101	1,090	1,619
Cash, restricted cash, and cash equivalents at end of period	939	1,101	1,090
Supplemental cash flow information
Increase (decrease) in capital expenditures not paid	301	(215)	36
Commonwealth Edison Co
Cash flows from operating activities
Net income	1,066	1,090	917
Adjustments to reconcile net income to net cash flows used in operating activities:
Depreciation and amortization	1,514	1,403	1,323
Loss (gain) on sales of assets	(5)	0	0
Deferred income taxes and amortization of investment tax credits	(19)	196	241
Other non-cash operating activities	232	(536)	(165)
Changes in assets and liabilities:
Accounts receivable	(185)	(138)	(163)
Inventories	(15)	(82)	(28)
Accounts payable and accrued expenses	(115)	(87)	406
Collateral (paid) received, net	30	69	51
Income taxes	(114)	106	0
Regulatory assets and liabilities, net	(246)	60	1,033
Pension and non-pension postretirement benefit contributions	(25)	(41)	(184)
Other assets and liabilities	99	(70)	(134)
Net cash flows provided by operating activities	2,713	1,848	1,197
Cash flows from investing activities
Capital expenditures	(2,195)	(2,576)	(2,506)
Other investing activities	7	8	28
Net cash flows used in investing activities	(2,188)	(2,568)	(2,478)
Cash flows from financing activities
Changes in short-term borrowings	(166)	(225)	427
Proceeds from short-term borrowings with maturities greater than 90 days	0	400	150
Repayments on short-term borrowings with maturities greater than 90 days	(400)	(150)	0
Issuance of long-term debt	800	975	750
Retirement of long-term debt	(250)	0	0
Dividends paid on common stock	(776)	(746)	(578)
Contributions from parent	227	655	670
Other financing activities	(14)	(14)	(11)
Net cash flows provided by financing activities	(579)	895	1,408
(Decrease) increase in cash, restricted cash, and cash equivalents	(54)	175	127
Cash, restricted cash, and cash equivalents at beginning of period	686	511	384
Cash, restricted cash, and cash equivalents at end of period	632	686	511
Supplemental cash flow information
Increase (decrease) in capital expenditures not paid	(17)	(10)	(20)
Commonwealth Edison Co | Related Party
Changes in assets and liabilities:
Receivables from and payables to affiliates, net	$ 4	$ (2)	$ (34)

Consolidated Statements of Ca_3

Consolidated Statements of Cash Flows - PECO - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Cash flows from operating activities
Net income	$ 2,460	$ 2,328	$ 2,171
Adjustments to reconcile net income to net cash flows used in operating activities:
Depreciation and amortization	3,596	3,506	3,533
Gain on sales of assets and businesses	(12)	(10)	(8)
Deferred income taxes and amortization of investment tax credits	128	319	255
Other non-cash operating activities	592	(335)	370
Changes in assets and liabilities:
Accounts receivable	(644)	(37)	(1,222)
Inventories	(56)	(45)	(121)
Accounts payable and accrued expenses	(37)	(191)	1,318
Income taxes	(4)	48	(4)
Regulatory assets and liabilities, net	(50)	(439)	(1,326)
Pension and non-pension postretirement benefit contributions	(180)	(129)	(616)
Other assets and liabilities	(257)	(188)	(905)
Net cash flows provided by operating activities	5,569	4,703	4,870
Cash flows from investing activities
Capital expenditures	(7,097)	(7,408)	(7,147)
Other investing activities	17	8	0
Net cash flows used in investing activities	(7,042)	(7,375)	(6,990)
Cash flows from financing activities
Changes in short-term borrowings	(265)	(313)	986
Issuance of long-term debt	4,974	5,825	6,309
Retirement of long-term debt	(1,557)	(1,713)	(2,073)
Dividends paid on common stock	(1,524)	(1,433)	(1,334)
Other financing activities	(109)	(114)	(102)
Net cash flows provided by financing activities	1,311	2,683	1,591
(Decrease) increase in cash, restricted cash, and cash equivalents	(162)	11	(529)
Cash, restricted cash, and cash equivalents at beginning of period	1,101	1,090	1,619
Cash, restricted cash, and cash equivalents at end of period	939	1,101	1,090
Supplemental cash flow information
Increase (decrease) in capital expenditures not paid	301	(215)	36
PECO Energy Co
Cash flows from operating activities
Net income	551	563	576
Adjustments to reconcile net income to net cash flows used in operating activities:
Depreciation and amortization	428	397	373
Gain on sales of assets and businesses	(4)	0	0
Deferred income taxes and amortization of investment tax credits	(63)	(43)	70
Other non-cash operating activities	59	13	40
Changes in assets and liabilities:
Accounts receivable	(210)	67	(205)
Inventories	1	34	(56)
Accounts payable and accrued expenses	23	(78)	152
Income taxes	(76)	86	(20)
Regulatory assets and liabilities, net	27	(31)	(45)
Pension and non-pension postretirement benefit contributions	(4)	(1)	(18)
Other assets and liabilities	18	13	5
Net cash flows provided by operating activities	754	1,019	841
Cash flows from investing activities
Capital expenditures	(1,553)	(1,426)	(1,349)
Other investing activities	6	2	8
Net cash flows used in investing activities	(1,547)	(1,424)	(1,341)
Cash flows from financing activities
Changes in short-term borrowings	27	(74)	239
Issuance of long-term debt	575	575	775
Retirement of long-term debt	0	(50)	(350)
Dividends paid on common stock	(400)	(405)	(399)
Contributions from parent	595	348	274
Other financing activities	(7)	(6)	(15)
Net cash flows provided by financing activities	790	388	524
(Decrease) increase in cash, restricted cash, and cash equivalents	(3)	(17)	24
Cash, restricted cash, and cash equivalents at beginning of period	51	68	44
Cash, restricted cash, and cash equivalents at end of period	48	51	68
Supplemental cash flow information
Increase (decrease) in capital expenditures not paid	103	(56)	9
PECO Energy Co | Related Party
Changes in assets and liabilities:
Receivables from and payables to affiliates, net	$ 4	$ (1)	$ (31)

Statements of Cash Flows - BGE

Statements of Cash Flows - BGE - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Cash flows from operating activities
Net income	$ 2,460	$ 2,328	$ 2,171
Adjustments to reconcile net income to net cash flows used in operating activities:
Depreciation and amortization	3,596	3,506	3,533
Asset impairments	0	0	48
Deferred income taxes and amortization of investment tax credits	128	319	255
Other non-cash operating activities	592	(335)	370
Changes in assets and liabilities:
Accounts receivable	(644)	(37)	(1,222)
Inventories	(56)	(45)	(121)
Accounts payable and accrued expenses	(37)	(191)	1,318
Collateral (paid) received, net	33	(146)	1,248
Income taxes	(4)	48	(4)
Regulatory assets and liabilities, net	(50)	(439)	(1,326)
Pension and non-pension postretirement benefit contributions	(180)	(129)	(616)
Other assets and liabilities	(257)	(188)	(905)
Net cash flows provided by operating activities	5,569	4,703	4,870
Cash flows from investing activities
Capital expenditures	(7,097)	(7,408)	(7,147)
Other investing activities	17	8	0
Net cash flows used in investing activities	(7,042)	(7,375)	(6,990)
Cash flows from financing activities
Changes in short-term borrowings	(265)	(313)	986
Issuance of long-term debt	4,974	5,825	6,309
Retirement of long-term debt	(1,557)	(1,713)	(2,073)
Dividends paid on common stock	(1,524)	(1,433)	(1,334)
Other financing activities	(109)	(114)	(102)
Net cash flows provided by financing activities	1,311	2,683	1,591
(Decrease) increase in cash, restricted cash, and cash equivalents	(162)	11	(529)
Cash, restricted cash, and cash equivalents at beginning of period	1,101	1,090	1,619
Cash, restricted cash, and cash equivalents at end of period	939	1,101	1,090
Supplemental cash flow information
Increase (decrease) in capital expenditures not paid	301	(215)	36
Baltimore Gas and Electric Company
Cash flows from operating activities
Net income	527	485	380
Adjustments to reconcile net income to net cash flows used in operating activities:
Depreciation and amortization	638	654	630
Asset impairments	0	0	48
Deferred income taxes and amortization of investment tax credits	5	66	9
Other non-cash operating activities	38	(1)	135
Changes in assets and liabilities:
Accounts receivable	(142)	89	(197)
Inventories	(5)	47	(61)
Accounts payable and accrued expenses	35	(75)	77
Collateral (paid) received, net	(1)	(22)	19
Income taxes	(54)	37	(17)
Regulatory assets and liabilities, net	(84)	(292)	(160)
Pension and non-pension postretirement benefit contributions	(37)	(19)	(68)
Other assets and liabilities	(39)	(13)	(33)
Net cash flows provided by operating activities	895	951	760
Cash flows from investing activities
Capital expenditures	(1,420)	(1,367)	(1,262)
Other investing activities	12	7	11
Net cash flows used in investing activities	(1,408)	(1,360)	(1,251)
Cash flows from financing activities
Changes in short-term borrowings	(161)	(72)	278
Issuance of long-term debt	800	700	500
Retirement of long-term debt	0	(300)	(250)
Dividends paid on common stock	(368)	(316)	(300)
Contributions from parent	237	385	286
Other financing activities	(9)	(7)	(11)
Net cash flows provided by financing activities	499	390	503
(Decrease) increase in cash, restricted cash, and cash equivalents	(14)	(19)	12
Cash, restricted cash, and cash equivalents at beginning of period	48	67	55
Cash, restricted cash, and cash equivalents at end of period	34	48	67
Supplemental cash flow information
Increase (decrease) in capital expenditures not paid	156	(44)	35
Baltimore Gas and Electric Company | Related Party
Changes in assets and liabilities:
Receivables from and payables to affiliates, net	$ 14	$ (5)	$ (2)

Consolidated Statements of Ca_4

Consolidated Statements of Cash Flows - PHI - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Cash flows from operating activities
Net income	$ 2,460	$ 2,328	$ 2,171
Adjustments to reconcile net income to net cash flows used in operating activities:
Depreciation and amortization	3,596	3,506	3,533
Deferred income taxes and amortization of investment tax credits	128	319	255
Other non-cash operating activities	592	(335)	370
Changes in assets and liabilities:
Accounts receivable	(644)	(37)	(1,222)
Inventories	(56)	(45)	(121)
Accounts payable and accrued expenses	(37)	(191)	1,318
Collateral (paid) received, net	33	(146)	1,248
Income taxes	(4)	48	(4)
Regulatory assets and liabilities, net	(50)	(439)	(1,326)
Pension and non-pension postretirement benefit contributions	(180)	(129)	(616)
Other assets and liabilities	(257)	(188)	(905)
Net cash flows provided by operating activities	5,569	4,703	4,870
Cash flows from investing activities
Capital expenditures	(7,097)	(7,408)	(7,147)
Proceeds from sales of assets and businesses	38	25	16
Other investing activities	17	8	0
Net cash flows used in investing activities	(7,042)	(7,375)	(6,990)
Cash flows from financing activities
Changes in short-term borrowings	(265)	(313)	986
Issuance of long-term debt	4,974	5,825	6,309
Retirement of long-term debt	(1,557)	(1,713)	(2,073)
Other financing activities	(109)	(114)	(102)
Net cash flows provided by financing activities	1,311	2,683	1,591
(Decrease) increase in cash, restricted cash, and cash equivalents	(162)	11	(529)
Cash, restricted cash, and cash equivalents at beginning of period	1,101	1,090	1,619
Cash, restricted cash, and cash equivalents at end of period	939	1,101	1,090
Supplemental cash flow information
Increase (decrease) in capital expenditures not paid	301	(215)	36
Pepco Holdings LLC
Cash flows from operating activities
Net income	741	590	608
Adjustments to reconcile net income to net cash flows used in operating activities:
Depreciation and amortization	947	990	938
Loss (gain) on sales of assets	1	(9)	0
Deferred income taxes and amortization of investment tax credits	73	29	(9)
Other non-cash operating activities	188	110	163
Changes in assets and liabilities:
Accounts receivable	(110)	(79)	(184)
Inventories	(37)	(42)	(34)
Accounts payable and accrued expenses	66	40	30
Collateral (paid) received, net	0	(196)	148
Income taxes	(33)	65	(1)
Regulatory assets and liabilities, net	(223)	(61)	(136)
Pension and non-pension postretirement benefit contributions	(86)	(24)	(78)
Other assets and liabilities	(119)	(101)	(149)
Net cash flows provided by operating activities	1,410	1,304	1,250
Cash flows from investing activities
Capital expenditures	(1,863)	(1,988)	(1,709)
Proceeds from sales of assets and businesses	0	10	0
Other investing activities	0	8	6
Net cash flows used in investing activities	(1,863)	(1,970)	(1,703)
Cash flows from financing activities
Changes in short-term borrowings	136	(20)	(54)
Issuance of long-term debt	1,100	1,075	925
Retirement of long-term debt	(583)	(500)	(310)
Change in Exelon intercompany money pool	(2)	21	37
Distributions to member	(706)	(513)	(750)
Contributions from member	505	475	787
Other financing activities	(38)	(41)	(22)
Net cash flows provided by financing activities	412	497	613
(Decrease) increase in cash, restricted cash, and cash equivalents	(41)	(169)	160
Cash, restricted cash, and cash equivalents at beginning of period	204	373	213
Cash, restricted cash, and cash equivalents at end of period	163	204	373
Supplemental cash flow information
Increase (decrease) in capital expenditures not paid	76	(109)	136
Pepco Holdings LLC | Related Party
Changes in assets and liabilities:
Receivables from and payables to affiliates, net	$ 2	$ (8)	$ (46)

Statements of Cash Flows - Pepc

Statements of Cash Flows - Pepco - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Cash flows from operating activities
Net income	$ 2,460	$ 2,328	$ 2,171
Adjustments to reconcile net income to net cash flows used in operating activities:
Depreciation and amortization	3,596	3,506	3,533
Deferred income taxes and amortization of investment tax credits	128	319	255
Other non-cash operating activities	592	(335)	370
Changes in assets and liabilities:
Accounts receivable	(644)	(37)	(1,222)
Inventories	(56)	(45)	(121)
Accounts payable and accrued expenses	(37)	(191)	1,318
Collateral (paid) received, net	33	(146)	1,248
Income taxes	(4)	48	(4)
Regulatory assets and liabilities, net	(50)	(439)	(1,326)
Pension and non-pension postretirement benefit contributions	(180)	(129)	(616)
Other assets and liabilities	(257)	(188)	(905)
Net cash flows provided by operating activities	5,569	4,703	4,870
Cash flows from investing activities
Capital expenditures	(7,097)	(7,408)	(7,147)
Proceeds from sales of assets and businesses	38	25	16
Other investing activities	17	8	0
Net cash flows used in investing activities	(7,042)	(7,375)	(6,990)
Cash flows from financing activities
Changes in short-term borrowings	(265)	(313)	986
Issuance of long-term debt	4,974	5,825	6,309
Retirement of long-term debt	(1,557)	(1,713)	(2,073)
Dividends paid on common stock	(1,524)	(1,433)	(1,334)
Other financing activities	(109)	(114)	(102)
Net cash flows provided by financing activities	1,311	2,683	1,591
(Decrease) increase in cash, restricted cash, and cash equivalents	(162)	11	(529)
Cash, restricted cash, and cash equivalents at beginning of period	1,101	1,090	1,619
Cash, restricted cash, and cash equivalents at end of period	939	1,101	1,090
Supplemental cash flow information
Increase (decrease) in capital expenditures not paid	301	(215)	36
Potomac Electric Power Company
Cash flows from operating activities
Net income	390	306	305
Adjustments to reconcile net income to net cash flows used in operating activities:
Depreciation and amortization	407	441	417
Loss (gain) on sales of assets	1	(9)	0
Deferred income taxes and amortization of investment tax credits	24	(15)	(17)
Other non-cash operating activities	33	53	36
Changes in assets and liabilities:
Accounts receivable	(26)	(29)	(104)
Inventories	(10)	(24)	(16)
Accounts payable and accrued expenses	67	6	24
Collateral (paid) received, net	0	(25)	24
Income taxes	(30)	60	(19)
Regulatory assets and liabilities, net	(85)	(45)	(69)
Pension and non-pension postretirement benefit contributions	(9)	(12)	(11)
Other assets and liabilities	(84)	(5)	(66)
Net cash flows provided by operating activities	684	699	471
Cash flows from investing activities
Capital expenditures	(929)	(957)	(874)
Proceeds from sales of assets and businesses	0	10	0
Other investing activities	0	8	3
Net cash flows used in investing activities	(929)	(939)	(871)
Cash flows from financing activities
Changes in short-term borrowings	68	(167)	124
Issuance of long-term debt	675	350	625
Retirement of long-term debt	(400)	0	(310)
Dividends paid on common stock	(359)	(252)	(463)
Contributions from parent	260	308	465
Other financing activities	(20)	(26)	(10)
Net cash flows provided by financing activities	224	213	431
(Decrease) increase in cash, restricted cash, and cash equivalents	(21)	(27)	31
Cash, restricted cash, and cash equivalents at beginning of period	72	99	68
Cash, restricted cash, and cash equivalents at end of period	51	72	99
Supplemental cash flow information
Increase (decrease) in capital expenditures not paid	30	(55)	65
Potomac Electric Power Company | Related Party
Changes in assets and liabilities:
Receivables from and payables to affiliates, net	$ 6	$ (3)	$ (33)

Statements of Cash Flows - DPL

Statements of Cash Flows - DPL - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Cash flows from operating activities
Net income	$ 2,460	$ 2,328	$ 2,171
Adjustments to reconcile net income to net cash flows used in operating activities:
Depreciation and amortization	3,596	3,506	3,533
Deferred income taxes and amortization of investment tax credits	128	319	255
Other non-cash operating activities	592	(335)	370
Changes in assets and liabilities:
Accounts receivable	(644)	(37)	(1,222)
Inventories	(56)	(45)	(121)
Accounts payable and accrued expenses	(37)	(191)	1,318
Collateral (paid) received, net	33	(146)	1,248
Income taxes	(4)	48	(4)
Regulatory assets and liabilities, net	(50)	(439)	(1,326)
Pension and non-pension postretirement benefit contributions	(180)	(129)	(616)
Other assets and liabilities	(257)	(188)	(905)
Net cash flows provided by operating activities	5,569	4,703	4,870
Cash flows from investing activities
Capital expenditures	(7,097)	(7,408)	(7,147)
Other investing activities	17	8	0
Net cash flows used in investing activities	(7,042)	(7,375)	(6,990)
Cash flows from financing activities
Changes in short-term borrowings	(265)	(313)	986
Issuance of long-term debt	4,974	5,825	6,309
Retirement of long-term debt	(1,557)	(1,713)	(2,073)
Dividends paid on common stock	(1,524)	(1,433)	(1,334)
Other financing activities	(109)	(114)	(102)
Net cash flows provided by financing activities	1,311	2,683	1,591
(Decrease) increase in cash, restricted cash, and cash equivalents	(162)	11	(529)
Cash, restricted cash, and cash equivalents at beginning of period	1,101	1,090	1,619
Cash, restricted cash, and cash equivalents at end of period	939	1,101	1,090
Supplemental cash flow information
Increase (decrease) in capital expenditures not paid	301	(215)	36
Delmarva Power & Light Company
Cash flows from operating activities
Net income	209	177	169
Adjustments to reconcile net income to net cash flows used in operating activities:
Depreciation and amortization	245	244	232
Deferred income taxes and amortization of investment tax credits	16	4	16
Other non-cash operating activities	40	13	29
Changes in assets and liabilities:
Accounts receivable	(46)	6	(59)
Inventories	(20)	(5)	(11)
Accounts payable and accrued expenses	22	(7)	19
Collateral (paid) received, net	2	(121)	78
Income taxes	(24)	26	0
Regulatory assets and liabilities, net	(51)	25	(34)
Pension and non-pension postretirement benefit contributions	(3)	(4)	(1)
Other assets and liabilities	16	13	(10)
Net cash flows provided by operating activities	408	373	418
Cash flows from investing activities
Capital expenditures	(556)	(562)	(430)
Other investing activities	0	0	3
Net cash flows used in investing activities	(556)	(562)	(427)
Cash flows from financing activities
Changes in short-term borrowings	81	(52)	(34)
Issuance of long-term debt	175	650	125
Retirement of long-term debt	(33)	(500)	0
Dividends paid on common stock	(220)	(133)	(143)
Contributions from parent	160	99	147
Other financing activities	(8)	(11)	(5)
Net cash flows provided by financing activities	155	53	90
(Decrease) increase in cash, restricted cash, and cash equivalents	7	(136)	81
Cash, restricted cash, and cash equivalents at beginning of period	16	152	71
Cash, restricted cash, and cash equivalents at end of period	23	16	152
Supplemental cash flow information
Increase (decrease) in capital expenditures not paid	41	(6)	23
Delmarva Power & Light Company | Related Party
Changes in assets and liabilities:
Receivables from and payables to affiliates, net	$ 2	$ 2	$ (10)

Consolidated Statements of Ca_5

Consolidated Statements of Cash Flows - ACE - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Cash flows from operating activities
Net income	$ 2,460	$ 2,328	$ 2,171
Adjustments to reconcile net income to net cash flows used in operating activities:
Depreciation and amortization	3,596	3,506	3,533
Deferred income taxes and amortization of investment tax credits	128	319	255
Other non-cash operating activities	592	(335)	370
Changes in assets and liabilities:
Accounts receivable	(644)	(37)	(1,222)
Inventories	(56)	(45)	(121)
Accounts payable and accrued expenses	(37)	(191)	1,318
Collateral (paid) received, net	33	(146)	1,248
Income taxes	(4)	48	(4)
Regulatory assets and liabilities, net	(50)	(439)	(1,326)
Pension and non-pension postretirement benefit contributions	(180)	(129)	(616)
Other assets and liabilities	(257)	(188)	(905)
Net cash flows provided by operating activities	5,569	4,703	4,870
Cash flows from investing activities
Capital expenditures	(7,097)	(7,408)	(7,147)
Other investing activities	17	8	0
Net cash flows used in investing activities	(7,042)	(7,375)	(6,990)
Cash flows from financing activities
Changes in short-term borrowings	(265)	(313)	986
Issuance of long-term debt	4,974	5,825	6,309
Retirement of long-term debt	(1,557)	(1,713)	(2,073)
Dividends paid on common stock	(1,524)	(1,433)	(1,334)
Other financing activities	(109)	(114)	(102)
Net cash flows provided by financing activities	1,311	2,683	1,591
(Decrease) increase in cash, restricted cash, and cash equivalents	(162)	11	(529)
Cash, restricted cash, and cash equivalents at beginning of period	1,101	1,090	1,619
Cash, restricted cash, and cash equivalents at end of period	939	1,101	1,090
Supplemental cash flow information
Increase (decrease) in capital expenditures not paid	301	(215)	36
Atlantic City Electric Company
Cash flows from operating activities
Net income	155	120	148
Adjustments to reconcile net income to net cash flows used in operating activities:
Depreciation and amortization	278	283	261
Deferred income taxes and amortization of investment tax credits	39	27	(2)
Other non-cash operating activities	70	0	46
Changes in assets and liabilities:
Accounts receivable	(35)	(57)	(19)
Inventories	(8)	(12)	(7)
Accounts payable and accrued expenses	(18)	27	(9)
Collateral (paid) received, net	0	(50)	46
Income taxes	(5)	0	11
Regulatory assets and liabilities, net	(88)	(47)	(19)
Pension and non-pension postretirement benefit contributions	(9)	(3)	(7)
Other assets and liabilities	(44)	(83)	(61)
Net cash flows provided by operating activities	327	201	384
Cash flows from investing activities
Capital expenditures	(373)	(460)	(398)
Other investing activities	0	0	1
Net cash flows used in investing activities	(373)	(460)	(397)
Cash flows from financing activities
Changes in short-term borrowings	(13)	199	(144)
Issuance of long-term debt	250	75	175
Retirement of long-term debt	(150)	0	0
Dividends paid on common stock	(127)	(126)	(145)
Contributions from parent	85	65	175
Other financing activities	(6)	(5)	(5)
Net cash flows provided by financing activities	39	208	56
(Decrease) increase in cash, restricted cash, and cash equivalents	(7)	(51)	43
Cash, restricted cash, and cash equivalents at beginning of period	21	72	29
Cash, restricted cash, and cash equivalents at end of period	14	21	72
Supplemental cash flow information
Increase (decrease) in capital expenditures not paid	4	(47)	48
Atlantic City Electric Company | Related Party
Changes in assets and liabilities:
Receivables from and payables to affiliates, net	$ (8)	$ (4)	$ (4)

Consolidated Balance Sheets - E

Consolidated Balance Sheets - Exelon - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Current assets
Cash and cash equivalents	$ 357	$ 445	$ 407	$ 672
Restricted cash and cash equivalents	541	482	$ 566	$ 321
Accounts receivable
Customer accounts receivable	3,144	2,659
Customer allowance for credit losses	(406)	(317)
Customer accounts receivable, net	2,738	2,342
Other accounts receivable	1,123	1,101
Other allowance for credit losses	(107)	(82)
Other accounts receivable, net	1,016	1,019
Inventories, net
Fossil fuel	72	94
Materials and supplies	781	707
Regulatory assets	1,940	2,215
Prepaid renewable energy credits	494	413
Other	445	370
Total current assets	8,384	8,087
Property, plant and equipment, net	78,182	73,593
Deferred debits and other assets
Regulatory assets	8,710	8,698
Goodwill	6,630	6,630
Receivable related to Regulatory Agreement Units	4,026	3,232
Investments	290	251
Total deferred debits and other assets	21,218	20,176
Total assets	107,784	101,856
Current liabilities
Short-term borrowings	1,859	2,523
Long-term debt due within one year	1,453	1,403
Customer deposits	446	411
Accrued expenses	1,468	1,375
Regulatory liabilities	411	389
Mark-to-market derivative liabilities	29	74
Unamortized energy contract liabilities	5	8
Renewable energy credit obligations	429	348
Other	512	519
Total current liabilities	9,611	9,901
Deferred credits and other liabilities
Deferred income taxes and unamortized investment tax credits	12,793	11,956
Regulatory liabilities	10,198	9,576
Pension obligations	1,745	1,571
Non-pension postretirement benefit obligations	472	527
Asset retirement obligations	301	267
Mark-to-market derivative liabilities	103	106
Unamortized energy contract liabilities	21	27
Other	2,282	2,088
Total deferred credits and other liabilities	27,915	26,118
Total liabilities	80,863	76,101
Commitments and contingencies
Shareholders’ equity
Common stock	21,338	21,114
Treasury stock, at cost	123	123
Retained earnings	6,426	5,490
Accumulated other comprehensive loss, net	(720)	(726)
Total shareholders’ equity	26,921	25,755
Total liabilities and member's equity	107,784	101,856
Related Party
Current liabilities
Accounts payable	5	5
Long-term debt to financing trust	390	390
Nonrelated Party
Deferred debits and other assets
Other	1,562	1,365
Current liabilities
Accounts payable	2,994	2,846
Long-term debt	$ 42,947	$ 39,692

Consolidated Balance Sheets -_2

Consolidated Balance Sheets - Exelon (Parentheticals) - USD ($) shares in Millions, $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Accumulated depreciation and amortization	$ 18,445	$ 17,251
Common Stock, No Par Value	$ 0	$ 0
Common stock, shares authorized (in shares)	2,000	2,000
Common stock, shares, outstanding (in shares)	1,005	999
Treasury Stock, Common, Shares	2	2

Consolidated Balance Sheets - C

Consolidated Balance Sheets - ComEd - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Current assets
Cash and cash equivalents	$ 357	$ 445
Restricted cash and cash equivalents	541	482
Accounts receivable
Customer accounts receivable	3,144	2,659
Customer allowance for credit losses	(406)	(317)
Customer accounts receivable, net	2,738	2,342
Other accounts receivable	1,123	1,101
Other allowance for credit losses	(107)	(82)
Other accounts receivable, net	1,016	1,019
Inventories, net
Regulatory assets	1,940	2,215
Other	445	370
Total current assets	8,384	8,087
Property, plant and equipment, net	78,182	73,593
Deferred debits and other assets
Regulatory assets	8,710	8,698
Goodwill	6,630	6,630
Receivable related to Regulatory Agreement Units	4,026	3,232
Investments	290	251
Total deferred debits and other assets	21,218	20,176
Total assets	107,784	101,856
Current liabilities
Short-term borrowings	1,859	2,523
Long-term debt due within one year	1,453	1,403
Accrued expenses	1,468	1,375
Customer deposits	446	411
Regulatory liabilities	411	389
Mark-to-market derivative liabilities	29	74
Other	512	519
Total current liabilities	9,611	9,901
Deferred credits and other liabilities
Deferred income taxes and unamortized investment tax credits	12,793	11,956
Regulatory liabilities	10,198	9,576
Asset retirement obligations	301	267
Non-pension postretirement benefit obligations	472	527
Mark-to-market derivative liabilities	103	106
Other	2,282	2,088
Total deferred credits and other liabilities	27,915	26,118
Total liabilities	80,863	76,101
Commitments and contingencies
Shareholders’ equity
Common stock	21,338	21,114
Retained earnings	6,426	5,490
Total shareholders’ equity	26,921	25,755
Total liabilities and member's equity	107,784	101,856
Related Party
Current liabilities
Accounts payable	5	5
Long-term debt to financing trust	390	390
Nonrelated Party
Deferred debits and other assets
Other	1,562	1,365
Current liabilities
Accounts payable	2,994	2,846
Long-term debt	42,947	39,692
Commonwealth Edison Co
Current assets
Cash and cash equivalents	105	110
Restricted cash and cash equivalents	486	402
Accounts receivable
Customer accounts receivable	994	860
Customer allowance for credit losses	(109)	(69)
Customer accounts receivable, net	885	791
Other accounts receivable	290	242
Other allowance for credit losses	(34)	(17)
Other accounts receivable, net	256	225
Inventories, net
Inventories, net	292	279
Regulatory assets	1,159	1,335
Other	141	123
Total current assets	3,328	3,268
Property, plant and equipment, net	30,211	29,088
Deferred debits and other assets
Regulatory assets	2,562	2,794
Goodwill	2,625	2,625
Receivable related to Regulatory Agreement Units	3,780	2,954
Investments	6	6
Prepaid pension asset	1,165	1,217
Total deferred debits and other assets	11,211	10,471
Total assets	44,750	42,827
Current liabilities
Short-term borrowings	36	602
Long-term debt due within one year	0	250
Accrued expenses	463	576
Customer deposits	134	118
Regulatory liabilities	197	191
Mark-to-market derivative liabilities	29	27
Other	270	219
Total current liabilities	1,954	2,922
Long-term debt	12,030	11,236
Deferred credits and other liabilities
Deferred income taxes and unamortized investment tax credits	5,601	5,327
Regulatory liabilities	8,421	7,493
Asset retirement obligations	167	149
Non-pension postretirement benefit obligations	156	161
Mark-to-market derivative liabilities	103	106
Other	1,232	865
Total deferred credits and other liabilities	15,680	14,101
Total liabilities	29,870	28,464
Commitments and contingencies
Shareholders’ equity
Common stock	1,588	1,588
Other paid-in capital	10,628	10,401
Retained earnings	2,664	2,374
Total shareholders’ equity	14,880	14,363
Total liabilities and member's equity	44,750	42,827
Commonwealth Edison Co | Related Party
Accounts receivable
Receivable from affiliates	4	3
Current liabilities
Accounts payable	77	72
Long-term debt	206	205
Long-term debt to financing trust	206	205
Commonwealth Edison Co | Nonrelated Party
Deferred debits and other assets
Other	1,073	875
Current liabilities
Accounts payable	748	867
Long-term debt	$ 12,030	$ 11,236

Consolidated Balance Sheets -_3

Consolidated Balance Sheets - ComEd (Parentheticals) - USD ($) shares in Millions, $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Aug. 04, 2022
Accumulated depreciation and amortization	$ 18,445	$ 17,251
Common stock (in usd per share)			$ 0
Common stock, shares authorized (in shares)	2,000	2,000
Common stock, shares, outstanding (in shares)	1,005	999
Commonwealth Edison Co
Accumulated depreciation and amortization	$ 7,619	$ 7,222
Common stock (in usd per share)	$ 12.50	$ 12.50
Common stock, shares authorized (in shares)	250	250
Common stock, shares, outstanding (in shares)	127	127

Consolidated Balance Sheets - P

Consolidated Balance Sheets - PECO - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Current assets
Cash and cash equivalents	$ 357	$ 445
Restricted cash and cash equivalents	541	482
Accounts receivable
Customer accounts receivable	3,144	2,659
Customer allowance for credit losses	(406)	(317)
Customer accounts receivable, net	2,738	2,342
Other accounts receivable	1,123	1,101
Other allowance for credit losses	(107)	(82)
Other accounts receivable, net	1,016	1,019
Inventories, net
Fossil fuel	72	94
Materials and supplies	781	707
Prepaid renewable energy credits	494	413
Regulatory assets	1,940	2,215
Other	445	370
Total current assets	8,384	8,087
Property, plant and equipment, net	78,182	73,593
Deferred debits and other assets
Regulatory assets	8,710	8,698
Receivable related to Regulatory Agreement Units	4,026	3,232
Investments	290	251
Total deferred debits and other assets	21,218	20,176
Total assets	107,784	101,856
Current liabilities
Short-term borrowings	1,859	2,523
Long-term debt due within one year	1,453	1,403
Accrued expenses	1,468	1,375
Customer deposits	446	411
Regulatory liabilities	411	389
Other	512	519
Total current liabilities	9,611	9,901
Deferred credits and other liabilities
Deferred income taxes and unamortized investment tax credits	12,793	11,956
Regulatory liabilities	10,198	9,576
Asset retirement obligations	301	267
Non-pension postretirement benefit obligations	472	527
Other	2,282	2,088
Total deferred credits and other liabilities	27,915	26,118
Total liabilities	80,863	76,101
Commitments and contingencies
Shareholders’ equity
Common stock	21,338	21,114
Retained earnings	6,426	5,490
Total shareholders’ equity	26,921	25,755
Total liabilities and member's equity	107,784	101,856
Related Party
Current liabilities
Accounts payable	5	5
Long-term debt to financing trust	390	390
Nonrelated Party
Deferred debits and other assets
Other	1,562	1,365
Current liabilities
Accounts payable	2,994	2,846
Long-term debt	42,947	39,692
PECO Energy Co
Current assets
Cash and cash equivalents	48	42
Restricted cash and cash equivalents	0	9
Accounts receivable
Customer accounts receivable	670	527
Customer allowance for credit losses	(133)	(95)
Customer accounts receivable, net	537	432
Other accounts receivable	145	117
Other allowance for credit losses	(18)	(8)
Other accounts receivable, net	127	109
Inventories, net
Fossil fuel	37	50
Materials and supplies	79	67
Prepaid renewable energy credits	51	36
Regulatory assets	65	127
Other	29	29
Total current assets	973	903
Property, plant and equipment, net	14,392	13,128
Deferred debits and other assets
Regulatory assets	1,003	793
Receivable related to Regulatory Agreement Units	247	278
Investments	41	35
Prepaid pension asset	435	429
Total deferred debits and other assets	1,758	1,564
Total assets	17,123	15,595
Current liabilities
Short-term borrowings	192	165
Long-term debt due within one year	350	0
Accrued expenses	166	236
Customer deposits	80	79
Regulatory liabilities	122	92
Other	80	59
Total current liabilities	1,670	1,182
Long-term debt	5,354	5,134
Deferred credits and other liabilities
Deferred income taxes and unamortized investment tax credits	2,433	2,321
Regulatory liabilities	253	314
Asset retirement obligations	27	26
Non-pension postretirement benefit obligations	287	286
Other	100	79
Total deferred credits and other liabilities	3,100	3,026
Total liabilities	10,308	9,526
Commitments and contingencies
Shareholders’ equity
Common stock	4,645	4,050
Retained earnings	2,170	2,019
Total shareholders’ equity	6,815	6,069
Total liabilities and member's equity	17,123	15,595
PECO Energy Co | Related Party
Accounts receivable
Receivable from affiliates	0	2
Current liabilities
Accounts payable	41	39
Long-term debt	184	184
Long-term debt to financing trust	184	184
PECO Energy Co | Nonrelated Party
Deferred debits and other assets
Other	32	29
Current liabilities
Accounts payable	639	512
Long-term debt	$ 5,354	$ 5,134

Consolidated Balance Sheets -_4

Consolidated Balance Sheets - PECO (Parentheticals) - USD ($) shares in Millions, $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Accumulated depreciation and amortization	$ 18,445	$ 17,251
Common Stock, No Par Value	$ 0	$ 0
Common stock, shares authorized (in shares)	2,000	2,000
Common stock, shares, outstanding (in shares)	1,005	999
PECO Energy Co
Accumulated depreciation and amortization	$ 4,042	$ 4,097
Common Stock, No Par Value	$ 0	$ 0
Common stock, shares authorized (in shares)	500	500
Common stock, shares, outstanding (in shares)	170	170

Balance Sheets - BGE

Balance Sheets - BGE - USD ($) $ in Millions	Dec. 31, 2024		Dec. 31, 2023
Current assets
Cash and cash equivalents	$ 357		$ 445
Restricted cash and cash equivalents	541		482
Accounts receivable
Customer accounts receivable	3,144		2,659
Customer allowance for credit losses	(406)		(317)
Customer accounts receivable, net	2,738		2,342
Other accounts receivable	1,123		1,101
Other allowance for credit losses	(107)		(82)
Other accounts receivable, net	1,016		1,019
Inventories, net
Fossil fuel	72		94
Materials and supplies	781		707
Regulatory assets	1,940		2,215
Prepaid renewable energy credits	494		413
Other	445		370
Total current assets	8,384		8,087
Property, plant and equipment, net	78,182		73,593
Deferred debits and other assets
Regulatory assets	8,710		8,698
Investments	290		251
Total deferred debits and other assets	21,218		20,176
Total assets	107,784		101,856
Current liabilities
Short-term borrowings	1,859		2,523
Long-term debt due within one year	1,453		1,403
Accrued expenses	1,468		1,375
Customer deposits	446		411
Regulatory liabilities	411		389
Renewable energy credit obligations	429		348
Other	512		519
Total current liabilities	9,611		9,901
Deferred credits and other liabilities
Deferred income taxes and unamortized investment tax credits	12,793		11,956
Regulatory liabilities	10,198		9,576
Asset retirement obligations	301		267
Non-pension postretirement benefit obligations	472		527
Other	2,282		2,088
Total deferred credits and other liabilities	27,915		26,118
Total liabilities	80,863		76,101
Commitments and contingencies
Shareholders’ equity
Common stock, shares authorized (in shares)	2,000,000,000		2,000,000,000
Common stock, shares, outstanding (in shares)	1,005,000,000		999,000,000
Common stock	$ 21,338		$ 21,114
Retained earnings	6,426		5,490
Total shareholders’ equity	26,921		25,755
Total liabilities and member's equity	107,784		101,856
Related Party
Current liabilities
Accounts payable	5		5
Nonrelated Party
Deferred debits and other assets
Other	1,562		1,365
Current liabilities
Accounts payable	2,994		2,846
Long-term debt	42,947		39,692
Baltimore Gas and Electric Company
Current assets
Cash and cash equivalents	33		47
Restricted cash and cash equivalents	1		1
Accounts receivable
Customer accounts receivable	654		527
Customer allowance for credit losses	(56)		(46)
Customer accounts receivable, net	598		481
Other accounts receivable	113		106
Other allowance for credit losses	(6)		(7)
Other accounts receivable, net	107		99
Inventories, net
Fossil fuel	29		35
Materials and supplies	84		74
Prepaid utility taxes	115		56
Regulatory assets	207		229
Prepaid renewable energy credits	157		147
Other	17		25
Total current assets	1,348		1,194
Property, plant and equipment, net	13,134		12,102
Deferred debits and other assets
Regulatory assets	788		727
Investments	10		9
Prepaid pension asset	218		248
Other	44		51
Total deferred debits and other assets	1,060		1,035
Total assets	15,542		14,331
Current liabilities
Short-term borrowings	175		336
Accrued expenses	176		203
Customer deposits	118		114
Regulatory liabilities	12		27
Renewable energy credit obligations	160		149
Other	39		32
Total current liabilities	1,243		1,240
Long-term debt	5,395		4,602
Deferred credits and other liabilities
Deferred income taxes and unamortized investment tax credits	2,099		1,945
Regulatory liabilities	636		773
Asset retirement obligations	36		32
Non-pension postretirement benefit obligations	150		158
Other	97		91
Total deferred credits and other liabilities	3,018		2,999
Total liabilities	9,656		8,841
Commitments and contingencies
Shareholders’ equity
Common stock, shares authorized (in shares)	1,500		1,500
Common stock, shares, outstanding (in shares)	1,000		1,000
Common stock	$ 3,483	[1]	$ 3,246
Retained earnings	2,403		2,244
Total shareholders’ equity	5,886		5,490
Total liabilities and member's equity	15,542		14,331
Baltimore Gas and Electric Company | Related Party
Accounts receivable
Receivable from affiliates	0		0
Current liabilities
Accounts payable	48		35
Baltimore Gas and Electric Company | Nonrelated Party
Current liabilities
Accounts payable	$ 515		$ 344
[1] In millions, shares round to zero. Number of shares is 1,500 authorized and 1,000 outstanding as of December 31, 2024 and 2023.

Balance Sheets - BGE (Parenthet

Balance Sheets - BGE (Parentheticals) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Accumulated depreciation and amortization	$ 18,445	$ 17,251
Common Stock, No Par Value	$ 0	$ 0
Common stock, shares authorized (in shares)	2,000,000,000	2,000,000,000
Common stock, shares, outstanding (in shares)	1,005,000,000	999,000,000
Baltimore Gas and Electric Company
Accumulated depreciation and amortization	$ 5,005	$ 4,744
Common Stock, No Par Value	$ 0
Common stock, shares authorized (in shares)	1,500	1,500
Common stock, shares, outstanding (in shares)	1,000	1,000

Consolidated Balance Sheets -_5

Consolidated Balance Sheets - PHI - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Current assets
Cash and cash equivalents	$ 357	$ 445
Restricted cash and cash equivalents	541	482
Accounts receivable
Customer accounts receivable	3,144	2,659
Customer allowance for credit losses	(406)	(317)
Customer accounts receivable, net	2,738	2,342
Other accounts receivable	1,123	1,101
Other allowance for credit losses	(107)	(82)
Other accounts receivable, net	1,016	1,019
Inventories, net
Fossil fuel	72	94
Materials and supplies	781	707
Regulatory assets	1,940	2,215
Prepaid renewable energy credits	494	413
Other	445	370
Total current assets	8,384	8,087
Property, plant and equipment, net	78,182	73,593
Deferred debits and other assets
Regulatory assets	8,710	8,698
Goodwill	6,630	6,630
Investments	290	251
Total deferred debits and other assets	21,218	20,176
Total assets	107,784	101,856
Current liabilities
Short-term borrowings	1,859	2,523
Long-term debt due within one year	1,453	1,403
Accrued expenses	1,468	1,375
Customer deposits	446	411
Regulatory liabilities	411	389
Unamortized energy contract liabilities	5	8
Renewable energy credit obligations	429	348
Other	512	519
Total current liabilities	9,611	9,901
Deferred credits and other liabilities
Deferred income taxes and unamortized investment tax credits	12,793	11,956
Regulatory liabilities	10,198	9,576
Asset retirement obligations	301	267
Non-pension postretirement benefit obligations	472	527
Unamortized energy contract liabilities	21	27
Other	2,282	2,088
Total deferred credits and other liabilities	27,915	26,118
Total liabilities	80,863	76,101
Commitments and contingencies
Member's equity
Retained earnings	6,426	5,490
Total liabilities and member's equity	107,784	101,856
Related Party
Current liabilities
Accounts payable	5	5
Nonrelated Party
Deferred debits and other assets
Other	1,562	1,365
Current liabilities
Accounts payable	2,994	2,846
Long-term debt	42,947	39,692
Pepco Holdings LLC
Current assets
Cash and cash equivalents	139	180
Restricted cash and cash equivalents	24	24
Accounts receivable
Customer accounts receivable	827	745
Customer allowance for credit losses	(108)	(107)
Customer accounts receivable, net	719	638
Other accounts receivable	284	310
Other allowance for credit losses	(49)	(50)
Other accounts receivable, net	235	260
Inventories, net
Fossil fuel	7	9
Materials and supplies	325	287
Prepaid utility taxes	70	67
Regulatory assets	323	337
Prepaid renewable energy credits	194	163
Other	36	33
Total current assets	2,080	2,001
Property, plant and equipment, net	20,053	18,851
Deferred debits and other assets
Regulatory assets	1,570	1,587
Goodwill	4,005	4,005
Investments	152	143
Prepaid pension asset	252	268
Other	185	211
Total deferred debits and other assets	6,164	6,214
Total assets	28,297	27,066
Current liabilities
Short-term borrowings	530	394
Long-term debt due within one year	290	644
Accrued expenses	367	338
Customer deposits	113	100
Regulatory liabilities	69	71
Unamortized energy contract liabilities	5	8
PPA Termination Obligation	0	49
Renewable energy credit obligations	217	163
Total current liabilities	2,565	2,712
Long-term debt	8,834	8,004
Deferred credits and other liabilities
Deferred income taxes and unamortized investment tax credits	3,190	3,031
Regulatory liabilities	794	904
Asset retirement obligations	67	55
Non-pension postretirement benefit obligations	31	40
Unamortized energy contract liabilities	21	27
Other	473	511
Total deferred credits and other liabilities	4,576	4,568
Total liabilities	15,975	15,284
Commitments and contingencies
Member's equity
Membership interest	12,562	12,057
Retained earnings	(240)	(275)
Total member's equity	12,322	11,782
Total liabilities and member's equity	28,297	27,066
Pepco Holdings LLC | Related Party
Accounts receivable
Receivable from affiliates	8	3
Current liabilities
Accounts payable	66	59
Other	63	65
Pepco Holdings LLC | Nonrelated Party
Current liabilities
Accounts payable	721	683
Other	$ 124	$ 138

Consolidated Balance Sheets -_6

Consolidated Balance Sheets - PHI (Parentheticals) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Accumulated depreciation and amortization	$ 18,445	$ 17,251
Pepco Holdings LLC
Accumulated depreciation and amortization	$ 3,728	$ 3,175

Balance Sheets - Pepco

Balance Sheets - Pepco - USD ($) $ in Millions		Dec. 31, 2024	Dec. 31, 2023
Current assets
Cash and cash equivalents		$ 357	$ 445
Restricted cash and cash equivalents		541	482
Accounts receivable
Customer accounts receivable		3,144	2,659
Customer allowance for credit losses		(406)	(317)
Customer accounts receivable, net		2,738	2,342
Other accounts receivable		1,123	1,101
Other allowance for credit losses		(107)	(82)
Other accounts receivable, net		1,016	1,019
Inventories, net
Regulatory assets		1,940	2,215
Prepaid renewable energy credits		494	413
Other		445	370
Total current assets		8,384	8,087
Property, plant and equipment, net		78,182	73,593
Deferred debits and other assets
Regulatory assets		8,710	8,698
Investments		290	251
Total deferred debits and other assets		21,218	20,176
Total assets		107,784	101,856
Current liabilities
Short-term borrowings		1,859	2,523
Long-term debt due within one year		1,453	1,403
Accrued expenses		1,468	1,375
Customer deposits		446	411
Regulatory liabilities		411	389
Renewable energy credit obligations		429	348
Other		512	519
Total current liabilities		9,611	9,901
Deferred credits and other liabilities
Deferred income taxes and unamortized investment tax credits		12,793	11,956
Regulatory liabilities		10,198	9,576
Asset retirement obligations		301	267
Other		2,282	2,088
Total deferred credits and other liabilities		27,915	26,118
Total liabilities		80,863	76,101
Commitments and contingencies
Shareholders’ equity
Common stock		21,338	21,114
Retained earnings		6,426	5,490
Total shareholders’ equity		26,921	25,755
Total liabilities and member's equity		107,784	101,856
Related Party
Current liabilities
Accounts payable		5	5
Nonrelated Party
Deferred debits and other assets
Other		1,562	1,365
Current liabilities
Accounts payable		2,994	2,846
Long-term debt		42,947	39,692
Potomac Electric Power Company
Current assets
Cash and cash equivalents		30	48
Restricted cash and cash equivalents		21	24
Accounts receivable
Customer accounts receivable		395	369
Customer allowance for credit losses		(59)	(52)
Customer accounts receivable, net		336	317
Other accounts receivable		142	166
Other allowance for credit losses		(27)	(28)
Other accounts receivable, net		115	138
Inventories, net
Inventories, net		169	159
Regulatory assets		157	150
Prepaid renewable energy credits		165	136
Other		55	51
Total current assets		1,049	1,025
Property, plant and equipment, net		10,097	9,430
Deferred debits and other assets
Regulatory assets		446	450
Investments		135	124
Prepaid pension asset		222	246
Other		51	55
Total deferred debits and other assets		854	875
Total assets		12,000	11,330
Current liabilities
Short-term borrowings		200	132
Long-term debt due within one year		6	405
Accrued expenses		201	191
Customer deposits		55	47
Regulatory liabilities		17	15
Merger related obligation		22	25
Renewable energy credit obligations		169	136
Other		51	61
Total current liabilities		1,118	1,365
Long-term debt		4,356	3,691
Deferred credits and other liabilities
Deferred income taxes and unamortized investment tax credits		1,509	1,431
Regulatory liabilities		310	382
Asset retirement obligations		49	37
Other		223	280
Total deferred credits and other liabilities		2,091	2,130
Total liabilities		7,565	7,186
Commitments and contingencies
Shareholders’ equity
Common stock	[1]	3,335	3,075
Retained earnings		1,100	1,069
Total shareholders’ equity		4,435	4,144
Total liabilities and member's equity		12,000	11,330
Potomac Electric Power Company | Related Party
Accounts receivable
Receivable from affiliates		1	2
Current liabilities
Accounts payable		37	32
Potomac Electric Power Company | Nonrelated Party
Current liabilities
Accounts payable		$ 360	$ 321
[1] In millions, shares round to zero. Number of shares is 100 outstanding as of December 31, 2024 and 2023.

Balance Sheets - Pepco (Parenth

Balance Sheets - Pepco (Parentheticals) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Aug. 04, 2022
Accumulated depreciation and amortization	$ 18,445	$ 17,251
Common stock (in usd per share)			$ 0
Common stock, shares authorized (in shares)	2,000,000,000	2,000,000,000
Common stock, shares, outstanding (in shares)	1,005,000,000	999,000,000
Potomac Electric Power Company
Accumulated depreciation and amortization	$ 4,522	$ 4,284
Common stock (in usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	200,000,000	200,000,000
Common stock, shares, outstanding (in shares)	100	100

Balance Sheets - DPL

Balance Sheets - DPL - USD ($) $ in Millions		Dec. 31, 2024	Dec. 31, 2023
Current assets
Cash and cash equivalents		$ 357	$ 445
Restricted cash and cash equivalents		541	482
Accounts receivable
Customer accounts receivable		3,144	2,659
Customer allowance for credit losses		(406)	(317)
Customer accounts receivable, net		2,738	2,342
Other accounts receivable		1,123	1,101
Other allowance for credit losses		(107)	(82)
Other accounts receivable, net		1,016	1,019
Inventories, net
Fossil fuel		72	94
Materials and supplies		781	707
Regulatory assets		1,940	2,215
Prepaid renewable energy credits		494	413
Other		445	370
Total current assets		8,384	8,087
Property, plant and equipment, net		78,182	73,593
Deferred debits and other assets
Regulatory assets		8,710	8,698
Total deferred debits and other assets		21,218	20,176
Total assets		107,784	101,856
Current liabilities
Short-term borrowings		1,859	2,523
Long-term debt due within one year		1,453	1,403
Accrued expenses		1,468	1,375
Customer deposits		446	411
Regulatory liabilities		411	389
Renewable energy credit obligations		429	348
Other		512	519
Total current liabilities		9,611	9,901
Deferred credits and other liabilities
Deferred income taxes and unamortized investment tax credits		12,793	11,956
Regulatory liabilities		10,198	9,576
Asset retirement obligations		301	267
Non-pension postretirement benefit obligations		472	527
Other		2,282	2,088
Total deferred credits and other liabilities		27,915	26,118
Total liabilities		80,863	76,101
Commitments and contingencies
Shareholders’ equity
Common stock		21,338	21,114
Retained earnings		6,426	5,490
Total shareholders’ equity		26,921	25,755
Total liabilities and member's equity		107,784	101,856
Related Party
Current liabilities
Accounts payable		5	5
Nonrelated Party
Deferred debits and other assets
Other		1,562	1,365
Current liabilities
Accounts payable		2,994	2,846
Long-term debt		42,947	39,692
Delmarva Power & Light Company
Current assets
Cash and cash equivalents		21	16
Restricted cash and cash equivalents		2	0
Accounts receivable
Customer accounts receivable		210	183
Customer allowance for credit losses		(17)	(19)
Customer accounts receivable, net		193	164
Other accounts receivable		63	52
Other allowance for credit losses		(9)	(8)
Other accounts receivable, net		54	44
Inventories, net
Fossil fuel		6	9
Materials and supplies		95	72
Prepaid utility taxes		26	24
Regulatory assets		60	54
Prepaid renewable energy credits		29	27
Other		16	14
Total current assets		502	425
Property, plant and equipment, net		5,540	5,165
Deferred debits and other assets
Regulatory assets		215	218
Prepaid pension asset		120	135
Other		44	50
Total deferred debits and other assets		379	403
Total assets		6,421	5,993
Current liabilities
Short-term borrowings		144	63
Long-term debt due within one year		130	84
Accrued expenses		55	64
Customer deposits		34	31
Regulatory liabilities		42	50
Renewable energy credit obligations		48	27
Other		22	21
Total current liabilities		688	524
Long-term debt		2,090	1,996
Deferred credits and other liabilities
Deferred income taxes and unamortized investment tax credits		946	904
Regulatory liabilities		325	365
Asset retirement obligations		13	12
Non-pension postretirement benefit obligations		3	6
Other		114	93
Total deferred credits and other liabilities		1,401	1,380
Total liabilities		4,179	3,900
Commitments and contingencies
Shareholders’ equity
Common stock	[1]	1,615	1,455
Retained earnings		627	638
Total shareholders’ equity		2,242	2,093
Total liabilities and member's equity		6,421	5,993
Delmarva Power & Light Company | Related Party
Accounts receivable
Receivable from affiliates		0	1
Current liabilities
Accounts payable		26	25
Delmarva Power & Light Company | Nonrelated Party
Current liabilities
Accounts payable		$ 187	$ 159
[1] In millions, shares round to zero. Number of shares is 1,000 authorized and outstanding as of December 31, 2024 and 2023.

Balance Sheets - DPL (Parenthet

Balance Sheets - DPL (Parentheticals) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Aug. 04, 2022
Accumulated depreciation and amortization	$ 18,445	$ 17,251
Common stock (in usd per share)			$ 0
Common stock, shares, outstanding (in shares)	1,005,000,000	999,000,000
Common stock, shares authorized (in shares)	2,000,000,000	2,000,000,000
Delmarva Power & Light Company
Accumulated depreciation and amortization	$ 2,075	$ 1,925
Common stock (in usd per share)	$ 2.25	$ 2.25
Common stock, shares, outstanding (in shares)	1,000	1,000
Common stock, shares authorized (in shares)	1,000	1,000

Consolidated Balance Sheets - A

Consolidated Balance Sheets - ACE - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Current assets
Cash and cash equivalents	$ 357	$ 445
Restricted cash and cash equivalents	541	482
Accounts receivable
Customer accounts receivable	3,144	2,659
Customer allowance for credit losses	(406)	(317)
Customer accounts receivable, net	2,738	2,342
Other accounts receivable	1,123	1,101
Other allowance for credit losses	(107)	(82)
Other accounts receivable, net	1,016	1,019
Inventories, net
Regulatory assets	1,940	2,215
Other	445	370
Total current assets	8,384	8,087
Property, plant and equipment, net	78,182	73,593
Deferred debits and other assets
Regulatory assets	8,710	8,698
Total deferred debits and other assets	21,218	20,176
Total assets	107,784	101,856
Current liabilities
Short-term borrowings	1,859	2,523
Long-term debt due within one year	1,453	1,403
Accrued expenses	1,468	1,375
Customer deposits	446	411
Regulatory liabilities	411	389
Other	512	519
Total current liabilities	9,611	9,901
Deferred credits and other liabilities
Deferred income taxes and unamortized investment tax credits	12,793	11,956
Regulatory liabilities	10,198	9,576
Non-pension postretirement benefit obligations	472	527
Other	2,282	2,088
Total deferred credits and other liabilities	27,915	26,118
Total liabilities	80,863	76,101
Commitments and contingencies
Shareholders’ equity
Common stock	21,338	21,114
Retained earnings	6,426	5,490
Total shareholders’ equity	26,921	25,755
Total liabilities and member's equity	107,784	101,856
Related Party
Current liabilities
Accounts payable	5	5
Nonrelated Party
Deferred debits and other assets
Other	1,562	1,365
Current liabilities
Accounts payable	2,994	2,846
Long-term debt	42,947	39,692
Atlantic City Electric Company
Current assets
Cash and cash equivalents	14	21
Restricted cash and cash equivalents	0	0
Accounts receivable
Customer accounts receivable	223	194
Customer allowance for credit losses	(32)	(36)
Customer accounts receivable, net	191	158
Other accounts receivable	79	92
Other allowance for credit losses	(13)	(14)
Other accounts receivable, net	66	78
Inventories, net
Inventories, net	62	55
Regulatory assets	101	125
Other	6	5
Total current assets	447	445
Property, plant and equipment, net	4,366	4,192
Deferred debits and other assets
Regulatory assets	502	483
Prepaid pension asset	1	3
Other	33	34
Total deferred debits and other assets	536	520
Total assets	5,349	5,157
Current liabilities
Short-term borrowings	186	199
Long-term debt due within one year	154	154
Accrued expenses	52	42
Customer deposits	24	23
Regulatory liabilities	10	6
PPA Termination Obligation	0	49
Other	10	12
Total current liabilities	621	702
Long-term debt	1,779	1,679
Deferred credits and other liabilities
Deferred income taxes and unamortized investment tax credits	816	771
Regulatory liabilities	146	140
Non-pension postretirement benefit obligations	0	4
Other	62	49
Total deferred credits and other liabilities	1,024	964
Total liabilities	3,424	3,345
Commitments and contingencies
Shareholders’ equity
Common stock	1,915	1,830
Retained earnings	10	(18)
Total shareholders’ equity	1,925	1,812
Total liabilities and member's equity	5,349	5,157
Atlantic City Electric Company | Related Party
Accounts receivable
Receivable from affiliates	7	3
Current liabilities
Accounts payable	22	25
Atlantic City Electric Company | Nonrelated Party
Current liabilities
Accounts payable	$ 163	$ 192

Consolidated Balance Sheets -_7

Consolidated Balance Sheets - ACE (Parentheticals) - USD ($) shares in Millions, $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Aug. 04, 2022
Accumulated depreciation and amortization	$ 18,445	$ 17,251
Common stock (in usd per share)			$ 0
Common stock, shares authorized (in shares)	2,000	2,000
Common stock, shares, outstanding (in shares)	1,005	999
Atlantic City Electric Company
Accumulated depreciation and amortization	$ 1,798	$ 1,684
Common stock (in usd per share)	$ 3	$ 3
Common stock, shares authorized (in shares)	25	25
Common stock, shares, outstanding (in shares)	9	9

Consolidated Statement of Chang

Consolidated Statement of Changes in Shareholders Equity - Exelon - USD ($) shares in Thousands, $ in Millions	Total	Common Stock	Treasury Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss), net	Noncontrolling Interests
Beginning Balance (in shares) at Dec. 31, 2021	981,291
Beginning Balance at Dec. 31, 2021	$ 34,795	$ 20,324	$ (123)	$ 16,942	$ (2,750)	$ 402
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 2,171			2,170		1
Long-Term Incentive Plan Activity (in shares)	561
Long-term incentive plan activity	$ 1	1
Employee stock purchase plan issuances (in shares)	983
Employee stock purchase plan issuances	$ 41	41
Changes in equity of noncontrolling interests	(7)					(7)
Distribution of Constellation	$ (11,573)	(21)		(13,179)	2,023	(396)
Issuance of common stock (in shares)	12,995
Issuance of common stock	$ 563	563
Common stock dividends	(1,336)			(1,336)
Other comprehensive loss, net of income taxes	$ 89				89
Ending Balance (in shares) at Dec. 31, 2022	995,830
Ending Balance at Dec. 31, 2022	$ 24,744	20,908	(123)	4,597	(638)	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 2,328			2,328		0
Long-Term Incentive Plan Activity (in shares)	659
Long-term incentive plan activity	$ 19	19
Employee stock purchase plan issuances (in shares)	1,173
Employee stock purchase plan issuances	$ 47	47
Issuance of common stock (in shares)	3,587
Issuance of common stock	$ 140	140
Common stock dividends	(1,435)			(1,435)
Other comprehensive loss, net of income taxes	$ (88)				(88)
Ending Balance (in shares) at Dec. 31, 2023	1,001,249
Ending Balance at Dec. 31, 2023	$ 25,755	21,114	(123)	5,490	(726)	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 2,460			2,460		0
Long-Term Incentive Plan Activity (in shares)	464
Long-term incentive plan activity	$ 26	26
Employee stock purchase plan issuances (in shares)	1,344
Employee stock purchase plan issuances	$ 50	50
Issuance of common stock (in shares)	3,989
Issuance of common stock	$ 148	148
Common stock dividends	(1,524)			(1,524)
Other comprehensive loss, net of income taxes	$ 6				6
Ending Balance (in shares) at Dec. 31, 2024	1,007,046
Ending Balance at Dec. 31, 2024	$ 26,921	$ 21,338	$ (123)	$ 6,426	$ (720)	$ 0

Consolidated Statement of Cha_2

Consolidated Statement of Changes in Shareholders Equity - Exelon (Parentheticals) - $ / shares	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Statement of Stockholders' Equity [Abstract]
Common Stock, Dividends, Per Share, Declared	$ 1.52	$ 1.44	$ 1.35

Consolidated Statement of Cha_3

Consolidated Statement of Changes in Shareholders Equity - ComEd - USD ($) $ in Millions	Total	Retained Earnings	Commonwealth Edison Co	Commonwealth Edison Co Common Stock	Commonwealth Edison Co Other Additional Capital [Member]	Commonwealth Edison Co Retained Earnings
Beginning Balance at Dec. 31, 2021			$ 12,355	$ 1,588	$ 9,076	$ 1,691
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 2,171	$ 2,170	917			917
Common stock dividends	(1,336)	(1,336)	(578)			(578)
Contributions from parent			670		670
Ending Balance at Dec. 31, 2022			13,364	1,588	9,746	2,030
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,328	2,328	1,090			1,090
Common stock dividends	(1,435)	(1,435)	(746)			(746)
Contributions from parent			655		655
Ending Balance at Dec. 31, 2023	25,755		14,363	1,588	10,401	2,374
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,460	2,460	1,066			1,066
Common stock dividends	(1,524)	$ (1,524)	(776)			(776)
Contributions from parent			227		227
Ending Balance at Dec. 31, 2024	$ 26,921		$ 14,880	$ 1,588	$ 10,628	$ 2,664

Consolidated Statement of Cha_4

Consolidated Statement of Changes in Shareholders Equity - PECO - USD ($) $ in Millions	Total	Retained Earnings	PECO Energy Co	PECO Energy Co Common Stock	PECO Energy Co Retained Earnings
Beginning Balance at Dec. 31, 2021			$ 5,112	$ 3,428	$ 1,684
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 2,171	$ 2,170	576		576
Common stock dividends	(1,336)	(1,336)	(399)		(399)
Contributions from parent			274	274
Ending Balance at Dec. 31, 2022			5,563	3,702	1,861
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,328	2,328	563		563
Common stock dividends	(1,435)	(1,435)	(405)		(405)
Contributions from parent			348	348
Ending Balance at Dec. 31, 2023	25,755		6,069	4,050	2,019
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,460	2,460	551		551
Common stock dividends	(1,524)	$ (1,524)	(400)		(400)
Contributions from parent			595	595
Ending Balance at Dec. 31, 2024	$ 26,921		$ 6,815	$ 4,645	$ 2,170

Statements of Changes in Shareh

Statements of Changes in Shareholder's Equity - 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, 2021			$ 4,570	$ 2,575	$ 1,995
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 2,171	$ 2,170	380		380
Common stock dividends	(1,336)	(1,336)	(300)		(300)
Contributions from parent			286	286
Ending Balance at Dec. 31, 2022			4,936	2,861	2,075
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,328	2,328	485		485
Common stock dividends	(1,435)	(1,435)	(316)		(316)
Contributions from parent			385	385
Ending Balance at Dec. 31, 2023	25,755		5,490	3,246	2,244
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,460	2,460	527		527
Common stock dividends	(1,524)	$ (1,524)	(368)		(368)
Contributions from parent			237	237
Ending Balance at Dec. 31, 2024	$ 26,921		$ 5,886	$ 3,483	$ 2,403

Consolidated Statements of Chan

Consolidated Statements of Changes in Equity - PHI - USD ($) $ in Millions	Total	Retained Earnings	Pepco Holdings LLC	Pepco Holdings LLC Membership Interest	Pepco Holdings LLC Retained Earnings
Beginning Balance at Dec. 31, 2021			$ 10,585	$ 10,795	$ (210)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 2,171	$ 2,170	608		608
Distribution to member			(750)		(750)
Contributions from member			787	787
Ending Balance at Dec. 31, 2022			11,230	11,582	(352)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,328	2,328	590		590
Distribution to member			(513)		(513)
Contributions from member			475	475
Ending Balance at Dec. 31, 2023			11,782	12,057	(275)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 2,460	$ 2,460	741		741
Distribution to member			(706)		(706)
Contributions from member			505	505
Ending Balance at Dec. 31, 2024			$ 12,322	$ 12,562	$ (240)

Statement of Changes in Shareho

Statement of Changes in Shareholders Equity - Pepco - USD ($) $ in Millions	Total	Retained Earnings	Potomac Electric Power Company	Potomac Electric Power Company Common Stock	Potomac Electric Power Company Retained Earnings
Beginning Balance at Dec. 31, 2021			$ 3,475	$ 2,302	$ 1,173
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 2,171	$ 2,170	305		305
Common stock dividends	(1,336)	(1,336)	(463)		(463)
Contributions from parent			465	465
Ending Balance at Dec. 31, 2022			3,782	2,767	1,015
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,328	2,328	306		306
Common stock dividends	(1,435)	(1,435)	(252)		(252)
Contributions from parent			308	308
Ending Balance at Dec. 31, 2023	25,755		4,144	3,075	1,069
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,460	2,460	390		390
Common stock dividends	(1,524)	$ (1,524)	(359)		(359)
Contributions from parent			260	260
Ending Balance at Dec. 31, 2024	$ 26,921		$ 4,435	$ 3,335	$ 1,100

Statement of Changes in Share_2

Statement of Changes in Shareholders Equity - DPL - USD ($) $ in Millions	Total	Retained Earnings	Delmarva Power & Light Company	Delmarva Power & Light Company Common Stock	Delmarva Power & Light Company Retained Earnings
Beginning Balance at Dec. 31, 2021			$ 1,777	$ 1,209	$ 568
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 2,171	$ 2,170	169		169
Common stock dividends	(1,336)	(1,336)	(143)		(143)
Contributions from parent			147	147
Ending Balance at Dec. 31, 2022			1,950	1,356	594
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,328	2,328	177		177
Common stock dividends	(1,435)	(1,435)	(133)		(133)
Contributions from parent			99	99
Ending Balance at Dec. 31, 2023	25,755		2,093	1,455	638
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,460	2,460	209		209
Common stock dividends	(1,524)	$ (1,524)	(220)		(220)
Contributions from parent			160	160
Ending Balance at Dec. 31, 2024	$ 26,921		$ 2,242	$ 1,615	$ 627

Consolidated Statement of Cha_5

Consolidated Statement of Changes in Shareholders Equity - ACE - USD ($) $ in Millions	Total	Retained Earnings	Atlantic City Electric Company	Atlantic City Electric Company Common Stock	Atlantic City Electric Company Retained Earnings
Beginning Balance at Dec. 31, 2021			$ 1,575	$ 1,590	$ (15)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 2,171	$ 2,170	148		148
Common stock dividends	(1,336)	(1,336)	(145)		(145)
Contributions from parent			175	175
Ending Balance at Dec. 31, 2022			1,753	1,765	(12)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,328	2,328	120		120
Common stock dividends	(1,435)	(1,435)	(126)		(126)
Contributions from parent			65	65
Ending Balance at Dec. 31, 2023	25,755		1,812	1,830	(18)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,460	2,460	155		155
Common stock dividends	(1,524)	$ (1,524)	(127)		(127)
Contributions from parent			85	85
Ending Balance at Dec. 31, 2024	$ 26,921		$ 1,925	$ 1,915	$ 10

Significant Accounting Policies

Significant Accounting Policies (All Registrants)	12 Months Ended
	Dec. 31, 2024
Accounting Policies [Abstract]
Significant Accounting Policies (All Registrants)	Significant Accounting Policies (All Registrants) Description of Business (All Registrants) Exelon is a utility services holding company engaged in the energy transmission and distribution businesses through ComEd, PECO, BGE, Pepco, DPL, and ACE. On February 21, 2021, Exelon’s Board of Directors approved a plan to separate the Utility Registrants and Generation. The separation was completed on February 1, 2022, creating two publicly traded companies, Exelon and Constellation. See Note 2 — Discontinued Operations for additional information. Name of Registrant Business Service Territories Commonwealth Edison Company Purchase and regulated retail sale of electricity Northern Illinois, including the City of Chicago Transmission and distribution of electricity to retail customers PECO Energy Company Purchase and regulated retail sale of electricity and natural gas Southeastern Pennsylvania, including the City of Philadelphia (electricity) Transmission and distribution of electricity and distribution of natural gas to retail customers Pennsylvania counties surrounding the City of Philadelphia (natural gas) Baltimore Gas and Electric Company Purchase and regulated retail sale of electricity and natural gas Central Maryland, including the City of Baltimore (electricity and natural gas) Transmission and distribution of electricity and distribution of natural gas to retail customers Pepco Holdings LLC Utility services holding company engaged, through its reportable segments Pepco, DPL, and ACE Service Territories of Pepco, DPL, and ACE Potomac Electric Power Company Purchase and regulated retail sale of electricity District of Columbia, and major portions of Montgomery and Prince George’s Counties, Maryland. Transmission and distribution of electricity to retail customers Delmarva Power & Light Company Purchase and regulated retail sale of electricity and natural gas Portions of Delaware and Maryland (electricity) Transmission and distribution of electricity and distribution of natural gas to retail customers Portions of New Castle County, Delaware (natural gas) Atlantic City Electric Company Purchase and regulated retail sale of electricity Portions of Southern New Jersey Transmission and distribution of electricity to retail customers Revision of Previously Issued Financial Statements (Exelon, BGE, PHI, Pepco, and DPL) In the fourth quarter of 2024, management identified an error related to the recording of Renewable energy credit obligations in Maryland and Washington D.C., and the corresponding Prepaid renewable energy credits, which were incorrectly netted on the balance sheet rather than reflected on a gross basis. As a result of this error, the Prepaid renewable energy credits and the Renewable energy credit obligations were understated on the Consolidated Balance Sheets of Exelon, BGE, PHI, Pepco, and DPL as of December 31, 2023, by $310 million, $147 million, $163 million, $136 million, and $27 million, respectively. There was no impact on the Consolidated Statements of Operations and Comprehensive Income, the Consolidated Statements of Cash Flows, or the Consolidated Statements of Changes in Equity for any of the Registrants for the years ended December 31, 2023, or December 31, 2022. Management has concluded that the error was not material to previously issued financial statements for Exelon, BGE, PHI, Pepco, or DPL. The Consolidated Balance Sheets as of December 31, 2023, for Exelon, BGE, PHI, Pepco, and DPL were revised to reflect the correction of the error. Basis of Presentation (All Registrants) This is a combined annual report of all Registrants. The Notes to the Consolidated Financial Statements apply to the Registrants as indicated parenthetically next to each corresponding disclosure. When appropriate, the Registrants are named specifically for their related activities and disclosures. Each of the Registrant’s Consolidated Financial Statements includes the accounts of its subsidiaries. All intercompany transactions have been eliminated, except for the historical transactions between the Utility Registrants and Generation for the purposes of presenting discontinued operations in all periods presented in the Consolidated Statements of Operations and Comprehensive Income. Through its business services subsidiary, BSC, Exelon provides its subsidiaries with a variety of support services at cost, including legal, human resources, financial, information technology, and supply management services. PHI also has a business services subsidiary, PHISCO, which provides a variety of support services at cost, including legal, finance, engineering, customer operations, transmission and distribution planning, asset management, system operations, and power procurement, to PHI operating Registrants. The costs of BSC and PHISCO are directly charged or allocated to the applicable subsidiaries. The results of Exelon’s corporate operations are presented as “Other” within the consolidated financial statements and include intercompany eliminations unless otherwise disclosed. As of December 31, 2024, and 2023, Exelon owned 100% of PECO, BGE, and PHI and more than 99% of ComEd. PHI owns 100% of Pepco, DPL, and ACE. As of February 1, 2022, as a result of the completion of the separation, Exelon no longer owns any interest in Generation. The separation of Constellation, including Generation and its subsidiaries, meets the criteria for discontinued operations and as such, its results of operations are presented as discontinued operations and have been excluded from continuing operations for all periods presented. Accounting rules require that certain BSC costs previously allocated to Generation be presented as part of Exelon’s continuing operations as these costs do not qualify as direct expenses of the discontinued operations. Comprehensive income, shareholders' equity, and cash flows related to Generation have not been segregated and are included in the Consolidated Statements of Operations and Comprehensive Income, Consolidated Statements of Changes in Shareholders’ Equity, and Consolidated Statements of Cash Flows, respectively, for the period ended December 31, 2022. See Note 2 — Discontinued Operations for additional information. The accompanying consolidated financial statements have been prepared in accordance with GAAP for annual financial statements and in accordance with the instructions to Form 10-K and Regulation S-X promulgated by the SEC. Use of Estimates (All Registrants) The preparation of financial statements of each of the Registrants in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Areas in which significant estimates have been made include, but are not limited to, the accounting for pension and OPEB, unbilled energy revenues, allowance for credit losses, inventory reserves, goodwill and long-lived asset impairment assessments, derivative instruments, unamortized energy contracts, fixed asset depreciation, capitalization of indirect construction costs, environmental costs and other loss contingencies, AROs, and income taxes. Actual results could differ from those estimates. Regulatory Accounting (All Registrants) For their regulated electric and gas operations, the Registrants reflect the effects of cost-based rate regulation in their financial statements, which is required for entities with regulated operations that meet the following criteria: (1) rates are established or approved by a third-party regulator; (2) rates are designed to recover the entities’ cost of providing services or products; and (3) there is a reasonable expectation that rates designed to recover costs can be charged to and collected from customers. The Registrants account for their regulated operations in accordance with regulatory and legislative guidance from the regulatory authorities having jurisdiction, principally the ICC, PAPUC, MDPSC, DCPSC, DEPSC, and NJBPU, under state public utility laws and the FERC under various Federal laws. Regulatory assets and liabilities are amortized and the related expense or revenue is recognized in the Consolidated Statements of Operations consistent with the recovery or refund included in customer rates. The Registrants' regulatory assets and liabilities as of the balance sheet date are probable of being recovered or settled in future rates. If a separable portion of the Registrants' business was no longer able to meet the criteria discussed above, the affected entities would be required to eliminate from their consolidated financial statements the effects of regulation for that portion, which could have a material impact on their financial statements. See Note 3 — Regulatory Matters for additional information. With the exception of income tax-related regulatory assets and liabilities, the Registrants classify regulatory assets and liabilities with a recovery or settlement period greater than one year as both current and noncurrent in their Consolidated Balance Sheets, with the current portion representing the amount expected to be recovered from or refunded to customers over the next twelve-month period as of the balance sheet date. Income tax-related regulatory assets and liabilities are classified entirely as noncurrent in the Registrants’ Consolidated Balance Sheets to align with the classification of the related deferred income tax balances. The Registrants treat the impacts of a final rate order received after the balance sheet date but prior to the issuance of the financial statements as a non-recognized subsequent event, as the receipt of a final rate order is a separate and distinct event that has future impacts on the parties affected by the order. Revenues (All Registrants) Operating Revenues. The Registrants’ operating revenues generally consist of revenues from contracts with customers involving the sale and delivery of power and natural gas and utility revenues from ARPs. The Registrants recognize revenue from contracts with customers to depict the transfer of goods or services to customers in an amount that the entities expect to be entitled to in exchange for those goods or services. The primary sources of revenue include regulated electric and natural gas tariff sales, distribution, and transmission services. At the end of each month, the Registrants accrue an estimate for the unbilled amount of energy delivered or services provided to customers. ComEd records ARP revenue for its best estimate of the electric distribution, energy efficiency, and transmission revenue impacts resulting from future changes in rates that ComEd believes are probable of approval by the ICC and FERC in accordance with its distribution multi-year rate plan, distribution revenue decoupling mechanisms, and formula rate mechanisms. BGE, Pepco, DPL, and ACE record ARP revenue for their best estimate of the electric and natural gas distribution revenue impacts resulting from future changes in rates that they believe are probable of approval by the MDPSC, DCPSC, and/or NJBPU in accordance with their revenue decoupling mechanisms. PECO, BGE, Pepco, DPL, and ACE record ARP revenue for their best estimate of the transmission revenue impacts resulting from future changes in rates that they believe are probable of approval by FERC in accordance with their formula rate mechanisms. The Registrants recognize all ARP revenues that will be collected within 24 months of the end of the annual period in which they are recorded. See Note 3 — Regulatory Matters for additional information. Taxes Directly Imposed on Revenue-Producing Transactions. The Registrants collect certain taxes from customers such as sales and gross receipts taxes, along with other taxes, surcharges, and fees, that are levied by state or local governments on the sale or distribution of electricity and gas. Some of these taxes are imposed on the customer, but paid by the Registrants, while others are imposed on the Registrants. Where these taxes are imposed on the customer, such as sales taxes, they are reported on a net basis with no impact to the Consolidated Statements of Operations and Comprehensive Income. However, where these taxes are imposed on the Registrants, such as gross receipts taxes or other surcharges or fees, they are reported on a gross basis. Accordingly, revenues are recognized for the taxes collected from customers along with an offsetting expense. Se e Note 22 — Supplemental Financial Information for taxes that are presented on a gross basis. Leases (All Registrants) The Registrants recognize a ROU asset and lease liability for operating and finance leases when the term is greater than one year. Operating lease ROU assets are included in Other deferred debits and other assets and operating lease liabilities are included in Other current liabilities and Other deferred credits and other liabilities on the Consolidated Balance Sheets. Finance lease ROU assets are included in Property, plant, and equipment, net and finance lease liabilities are included in Long-term debt due within one year and Long-term debt on the Consolidated Balance Sheets. The ROU asset is measured as the sum of (1) the present value of all remaining fixed and in-substance fixed payments using the rate implicit in the lease whenever that is readily determinable or each Registrant’s incremental borrowing rate, (2) any lease payments made at or before the commencement date (less any lease incentives received), and (3) any initial direct costs incurred. The lease liability is measured the same as the ROU asset, but excludes any payments made before the commencement date and initial direct costs incurred. Lease terms include options to extend or terminate the lease if it is reasonably certain they will be exercised. The Registrants include non-lease components, which are service-related costs that are not integral to the use of the asset, in the measurement of the ROU asset and lease liability. Expense for operating leases and leases with a term of one year or less is recognized on a straight-line basis over the term of the lease, unless another systematic and rational basis is more representative of the derivation of benefit from use of the leased property. Variable lease payments are recognized in the period in which the related obligation is incurred. Operating lease expense, finance lease expense, and variable lease payments are primarily recorded to Operating and maintenance expense on the Registrants’ Statements of Operations and Comprehensive Income. Income from operating leases, including subleases, is recognized on a straight-line basis over the term of the lease, unless another systematic and rational basis is more representative of the pattern in which income is earned over the term of the lease. Variable lease income is recognized in the period in which the related obligation is performed. Operating lease income and variable lease income are recorded to Operating revenues on the Registrants’ Statements of Operations and Comprehensive Income. The Registrants’ operating and finance leases consist primarily of real estate, including office buildings, and vehicles and equipment. The Registrants account for land right arrangements that provide for exclusive use as leases while shared use land arrangements are generally not leases. The Registrants do not account for secondary use pole attachments as leases. See Note 10 — Leases for additional information. Income Taxes (All Registrants) Deferred federal and state income taxes are recorded on significant temporary differences between the book and tax basis of assets and liabilities and for tax benefits carried forward. Investment tax credits have been deferred in the Registrants’ Consolidated Balance Sheets and are recognized in book income over the life of the related property. The Registrants account for uncertain income tax positions using a benefit recognition model with a two-step approach; a more-likely-than-not recognition criterion; and a measurement approach that measures the position as the largest amount of tax benefit that is greater than 50% likely of being realized upon ultimate settlement. If it is not more-likely-than-not that the benefit of the tax position will be sustained on its technical merits, no benefit is recorded. Uncertain tax positions that relate only to timing of when an item is included on a tax return are considered to have met the recognition threshold. The Registrants recognize accrued interest related to unrecognized tax benefits in Interest expense, net or Other, net (interest income) and recognize penalties related to unrecognized tax benefits in Other, net in their Consolidated Statements of Operations and Comprehensive Income. Cash and Cash Equivalents (All Registrants) The Registrants consider investments purchased with an original maturity of three months or less to be cash equivalents. Restricted Cash and Cash Equivalents (All Registrants) Restricted cash and cash equivalents represent funds that are restricted to satisfy designated current liabilities. As of December 31, 2024 and 2023, the Registrants' restricted cash and cash equivalents primarily represented the following items: Registrant (a) Description Exelon Payment of medical, dental, vision, and long-term disability benefits, in addition to the items listed below for the Utility Registrants. ComEd Collateral held from suppliers associated with energy and REC procurement contracts, any over-recovered RPS costs and alternative compliance payments received from RES pursuant to FEJA, and costs for the remediation of an MGP site. PECO Proceeds from the sales of assets that were subject to PECO’s mortgage indenture. BGE Proceeds from the loan program for the completion of certain energy efficiency measures and collateral held from energy suppliers. PHI (a) Payment of merger commitments and collateral held from its energy suppliers associated with procurement contracts. Pepco Payment of merger commitments and collateral held from energy suppliers. DPL Collateral held from energy suppliers. __________ (a) As of December 31, 2024 and 2023, ACE had no restricted cash and cash equivalents. Restricted cash and cash equivalents not available to satisfy current liabilities are classified as noncurrent assets. As of December 31, 2024 and 2023, the Registrants' noncurrent restricted cash and cash equivalents primarily represented ComEd’s over-recovered RPS costs and alternative compliance payments received from RES pursuant to FEJA and costs for the remediation of an MGP site and are included in other deferred debits and other assets. See Note 16 — Debt and Credit Agreements and Note 22 — Supplemental Financial Information for additional information. Allowance for Credit Losses on Customer Receivables (All Registrants) The allowance for credit losses reflects the Registrants’ best estimates of losses on the customers' accounts receivable balances based on historical experience, current information, and reasonable and supportable forecasts. The allowance for credit losses is estimated based on historical experience, current conditions, and forward-looking risk factors. Utility Registrants' customer accounts are written off consistent with approved regulatory requirements. Adjustments to the allowance for credit losses are primarily recorded to Operating and maintenance expense on the Registrants' Consolidated Statements of Operations and Comprehensive Income or Regulatory assets and liabilities on the Registrants' Consolidated Balance Sheets. See Note 3 — Regulatory Matters for additional information regarding the regulatory recovery of credit losses on customer accounts receivable. The Registrants have certain non-customer receivables in Other deferred debits and other assets which primarily are with governmental agencies and other high-quality counterparties with no history of default. As such, the allowance for credit losses related to these receivables is not material. The Registrants monitor these balances and will record an allowance if there are indicators of a decline in credit quality. See Note 6 — Accounts Receivable for additional information. Inventories (All Registrants) Inventory is recorded at the lower of weighted average cost or net realizable value. Provisions are recorded for excess and obsolete inventory. Fossil fuel and Materials and supplies are generally included in inventory when purchased. Fossil fuel is expensed to Purchased power and fuel expense when used or sold. Materials and supplies generally includes transmission and distribution materials and are expensed to Operating and maintenance or capitalized to Property, plant, and equipment, as appropriate, when installed or used. Property, Plant, and Equipment (All Registrants) Property, plant, and equipment is recorded at original cost. Original cost includes construction-related direct labor and material costs and indirect construction costs including labor and related costs of departments associated with supporting construction activities. When appropriate, original cost also includes AFUDC for regulated property at the Utility Registrants. The cost of repairs and maintenance and minor replacements of property is charged to Operating and maintenance expense as incurred. Third parties reimburse the Utility Registrants for all or a portion of expenditures for certain capital projects. Such contributions in aid of construction costs (CIAC) are recorded as a reduction to Property, plant, and equipment, net. Upon retirement, the cost of property, net of salvage, is charged to accumulated depreciation consistent with the composite and group methods of depreciation. Depreciation expense at ComEd, BGE, Pepco, DPL, and ACE includes the estimated cost of dismantling and removing plant from service upon retirement. Actual incurred removal costs are applied against a related regulatory liability or recorded to a regulatory asset if in excess of previously collected removal costs. PECO’s removal costs are capitalized to accumulated depreciation when incurred and recorded to depreciation expense over the life of the new asset constructed consistent with PECO’s regulatory recovery method. Capitalized Software. Certain costs, such as design, coding, and testing incurred during the application development stage of software projects that are internally developed or purchased for operational use are capitalized within Property, plant, and equipment. Similar costs incurred for cloud-based solutions treated as service arrangements are capitalized within Other Current Assets and Deferred Debits and Other Assets. Such capitalized amounts are amortized ratably over the expected lives of the projects when they become operational, generally not to exceed five years. Certain other capitalized software costs are being amortized over longer lives based on the expected life or pursuant to prescribed regulatory requirements. AFUDC. AFUDC is the cost, during the period of construction, of debt and equity funds used to finance construction projects for regulated operations. AFUDC is recorded to construction work in progress and as a non-cash credit to an allowance that is included in interest expense for debt-related funds and other income and deductions for equity-related funds. The rates used for capitalizing AFUDC are computed under a method prescribed by regulatory authorities. See Note 7 — Property, Plant, and Equipment, Note 8 — Jointly Owned Electric Utility Plant and Note 22 — Supplemental Financial Information for additional information. Depreciation and Amortization (All Registrants) Depreciation is generally recorded over the estimated service lives of property, plant, and equipment on a straight-line basis using the group or composite methods of depreciation. The group approach is typically for groups of similar assets that have approximately the same useful lives and the composite approach is used for dissimilar assets that have different lives. Under both methods, a reporting entity depreciates the assets over the average life of the assets in the group. ComEd, BGE, Pepco, DPL, and ACE's depreciation expense includes the estimated cost of dismantling and removing plant from service upon retirement, which is consistent with each utility's regulatory recovery method. PECO's removal costs are capitalized to accumulated depreciation when incurred and recorded to depreciation expense over the life of the new asset constructed consistent with PECO's regulatory recovery method. The estimated service lives for the Registrants are based on a combination of depreciation studies and historical retirements. See Note 7 — Property, Plant, and Equipment for additional information regarding depreciation. Amortization of regulatory assets and liabilities are recorded over the recovery or refund period specified in the related legislation or regulatory order or agreement. When the recovery or refund period is less than one year, amortization is recorded to the line item in which the deferred cost or income would have originally been recorded in the Registrants’ Consolidated Statements of Operations and Comprehensive Income. Amortization of ComEd’s electric distribution rate reconciliations and energy efficiency formula rate regulatory assets and the Utility Registrants' transmission formula rate regulatory assets is recorded to Operating revenues. Amortization of income tax related regulatory assets and liabilities is generally recorded to Income tax expense. Except for the regulatory assets and liabilities discussed above, amortization is generally recorded to Depreciation and amortization in the Registrants’ Consolidated Statements of Operations and Comprehensive Income when the recovery period is more than one year. See Note 3 — Regulatory Matters and Note 22 — Supplemental Financial Information for additional information regarding the amortization of the Registrants' regulatory assets. Asset Retirement Obligations (All Registrants) The Registrants estimate and recognize a liability for their legal obligation to perform asset retirement activities even though the timing and/or methods of settlement may be conditional on future events. The Registrants update their AROs either annually or on a rotational basis at least once every three years, based on a risk profile, unless circumstances warrant more frequent updates. The updates factor in new cost estimates, credit-adjusted, risk-free rates (CARFR) and escalation rates, and the timing of cash flows. AROs are accreted throughout each year to reflect the time value of money for these present value obligations through an increase to Regulatory assets. See Note 9 — Asset Retirement Obligations for additional information. Guarantees (All Registrants) If necessary, the Registrants recognize a liability at the time of issuance of a guarantee for the fair value of the obligations they have undertaken. The liability is reduced or eliminated as the Registrants are released from risk under the guarantee. Depending on the nature of the guarantee, the release from risk of the Registrant may be recognized only upon the expiration or settlement of the guarantee or by a systematic and rational amortization method over the term of the guarantee. See Note 18 — Commitments and Contingencies for additional information. Asset Impairments Long-Lived Assets (All Registrants). The Registrants evaluate the carrying value of long-lived assets for recoverability whenever events or changes in circumstances indicate that the carrying value of those assets may not be recoverable. Indicators of impairment may include specific regulatory disallowance, abandonment, or plans to dispose of a long-lived asset significantly before the end of its useful life. When the estimated undiscounted future cash flows attributable to the long-lived asset may not be recoverable, the amount of the impairment loss is determined by measuring the excess of the carrying amount of the long-lived asset over its fair value. Goodwill (Exelon, ComEd, and PHI). Goodwill represents the excess of the purchase price paid over the estimated fair value of the net assets acquired and liabilities assumed in the acquisition of a business. Goodwill is not amortized but is assessed for impairment at least annually or on an interim basis if an event occurs or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying value. See Note 12 — Intangible Assets for additional information. Derivative Financial Instruments (All Registrants) Derivatives are recognized on the balance sheet at their fair value unless they qualify for certain exceptions, including NPNS. For derivatives that qualify and are designated as cash flow hedges, changes in fair value each period are initially recorded in AOCI and recognized in earnings when the underlying hedged transaction affects earnings. Amounts recognized in earnings are recorded in Interest expense, net on the Consolidated Statement of Operations and Comprehensive Income based on the activity the transaction is economically hedging. Cash inflows and outflows related to derivative instruments designated as cash flow hedges are included as a component of operating, investing, or financing cash flows in the Consolidated Statements of Cash Flows, depending on the nature of each transaction. For derivatives intended to serve as economic hedges, which are not designated for hedge accounting, changes in fair value each period are recognized in earnings or as a regulatory asset or liability. Amounts recognized in earnings are recorded in Electric operating revenues, Purchased power and fuel, or Interest expense in the Consolidated Statements of Operations and Comprehensive Income based on the activity the transaction is economically hedging. Changes in fair value are also recorded as a regulatory asset or liability when there is an ability to recover or return the associated costs or benefits in accordance with regulatory requirements. Cash inflows and outflows related to derivative instruments are included as a component of operating, investing, or financing cash flows in the Consolidated Statements of Cash Flows, depending on the nature of the hedged item. See Note 3 — Regulatory Matters and Note 15 — Derivative Financial Instruments for additional information. Retirement Benefits (All Registrants) Exelon sponsors defined benefit pension plans and OPEB plans. The plan obligations and costs of providing benefits under these plans are measured as of December 31. The measurement involves various factors, assumptions, and accounting elections. The impact of assumption changes or experiences different from those assumed on pension and OPEB obligations is recognized over time rather than immediately recognized in the Consolidated Statements of Operations and Comprehensive Income. Gains or losses in excess of the greater of ten percent of the projected benefit obligation or the MRV of plan assets are amortized over the expected average remaining service period of plan participants. See Note 14 — Retirement Benefits for additional information. New Accounting Standards (All Registrants) New Accounting Standards Adopted in 2024: In 2024, the Registrants adopted the following new FASB authoritative accounting guidance. Segment Reporting (Issued November 2023). Improves reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. The objective of the revised guidance is to introduce a new requirement to disclose significant segment expenses regularly provided to the CODM, extend certain annual disclosures to interim periods, clarify single reportable segment entities must apply ASC 280 in its entirety, permit more than one measure of segment profit or loss to be reported under certain conditions, and require disclosure of the title and position of the CODM. The standard is effective for annual periods beginning January 1, 2024 and interim periods beginning January 1, 2025. The standard is required to be applied retrospectively. The Registrants' adoption of this guidance in the fourth quarter of 2024 resulted in expanded significant segment expenses and enhanced qualitative disclosures regarding the CODMs title and use of the Net income (loss) from continuing operations profitability measure. See Note 5 — Segment Information for additional information. New Accounting Standards Issued and Not Yet Adopted as of December 31, 2024: The following new authoritative accounting guidance issued by the FASB has not yet been adopted and reflected by the Registrants in their consolidated financial st

Discontinued Operations (Exelon

Discontinued Operations (Exelon)	12 Months Ended
	Dec. 31, 2024
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations (Exelon)	Discontinued Operations (Exelon) On February 21, 2021, Exelon's Board of Directors approved a plan to separate the Utility Registrants and Generation, creating two publicly traded companies ("the separation"). Exelon completed the separation on February 1, 2022, through the distribution of 326,663,937 common stock shares of Constellation, the new publicly traded company, to Exelon shareholders. Under the separation plan, Exelon shareholders retained their current shares of Exelon stock and received one share of Constellation common stock for every three shares of Exelon common stock held on January 20, 2022, the record date for the distribution, in a transaction that was tax-free to Exelon and its shareholders for U.S. federal income tax purposes. Constellation was newly formed and incorporated in Pennsylvania on June 15, 2021 for the purposes of separation and holds Generation (including Generation's subsidiaries). Pursuant to the separation: • Exelon entered into four term loans consisting of a 364-day term loan for $1.15 billion and three 18-month term loans for $300 million, $300 million, and $250 million, respectively. Exelon issued these term loans primarily to fund the cash payment to Constellation and for general corporate purposes. See Note 16 — Debt and Credit Agreements for additional information. • Exelon made a cash payment of $1.75 billion to Constellation on January 31, 2022. • Exelon contributed its equity ownership interest in Generation to Constellation. Exelon no longer retains any equity ownership interest in Generation or Constellation. • Exelon transferred certain corporate assets and employee-related obligations to Constellation. • Exelon received cash from Generation of $258 million to settle the intercompany loan on January 31, 2022. See Note 16 — Debt and Credit Agreements for additional information. Continuing Involvement In order to govern the ongoing relationships between Exelon and Constellation after the separation, and to facilitate an orderly transition, Exelon and Constellation have entered into several agreements, including the following: • Separation Agreement – governs the rights and obligations between Exelon and Constellation regarding certain actions to be taken in connection with the separation, among others, including the allocation of assets and liabilities between Exelon and Constellation. • Transition Services Agreement (TSA) – governed the terms and conditions of the services that Exelon provided to Constellation and Constellation provided to Exelon. As of December 31, 2024, the TSA has been exited. The services included specified accounting, finance, information technology, human resources, employee benefits, and other services that had historically been provided on a centralized basis by BSC. For the year ended December 31, 2024, the amounts Exelon billed Constellation and Constellation billed Exelon for these services were $14 million recorded in Other income, net and an immaterial amount recorded in Operating and maintenance expense, respectively. For the year ended December 31, 2023, the amounts Exelon billed Constellation and Constellation billed Exelon for these services were $151 million recorded in Other income, net and $14 million recorded in Operating and maintenance expense, respectively. For the period from February 1, 2022 to December 31, 2022, the amounts Exelon billed Constellation and Constellation billed Exelon for these services were $266 million recorded in Other income, net and $43 million recorded in Operating and maintenance expense, respectively. • Tax Matters Agreement (TMA) – governs the respective rights, responsibilities and obligations of Exelon and Constellation with respect to all tax matters, including tax liabilities and benefits, tax attributes, tax returns, tax contests and other tax sharing regarding U.S. federal, state, local and foreign income taxes, other tax matters and related tax returns. See Note 13 — Income Taxes for additional information. In addition, the Utility Registrants will continue to incur expenses from transactions with Constellation after the separation. Prior to the separation, such expenses were primarily recorded as Purchased power from affiliates and an immaterial amount recorded as Operating and maintenance expense from affiliates at the Utility Registrants. After the separation, such expenses are primarily recorded as Purchased power and an immaterial amount recorded as Operating and maintenance expense at the Utility Registrants. • ComEd had an ICC-approved RFP contract with Constellation to provide a portion of ComEd’s electric supply requirements. ComEd also purchased RECs and ZECs from Constellation. • PECO received electric supply from Constellation under contracts executed through PECO’s competitive procurement process. In addition, PECO had a ten-year agreement with Constellation to sell solar AECs. • BGE received a portion of its energy requirements from Constellation under its MDPSC-approved market-based SOS and gas commodity programs. • Pepco received electric supply from Constellation under contracts executed through Pepco’s competitive procurement process approved by the MDPSC and DCPSC. • DPL received a portion of its energy requirements from Constellation under its MDPSC and DEPSC approved market-based SOS commodity programs. • ACE received electric supply from Constellation under contracts executed through ACE’s competitive procurement process approved by the NJBPU. ComEd and PECO also have receivables with Constellation for estimated excess funds at the end of decommissioning the Regulatory Agreement Units, such amounts are due back to ComEd and PECO, as applicable, for payment to their respective customers. See Note 3 — Regulatory Matters and Note 23 — Related Party Transactions for additional information. Discontinued Operations The separation represented a strategic shift that had a major effect on Exelon’s operations and financial results. Accordingly, the separation met the criteria for discontinued operations. There were no results from discontinued operations for the years ended December 31, 2024 and 2023. The following table presents the results of Constellation that have been reclassified from continuing operations and included in discontinued operations within Exelon’s Consolidated Statements of Operations and Comprehensive Income for the year ended December 31, 2022. These results are primarily Generation, which is comprised of Exelon’s Mid-Atlantic, Midwest, New York, ERCOT, and Other Power Regions reportable segments, and include the impact of transaction costs, certain BSC costs, including any transition costs, that were historically allocated and directly attributable to Generation, transactions between Generation and the Utility Registrants, and tax-related adjustments. Transaction costs include costs for external bankers, accountants, appraisers, lawyers, external counsels and other advisors, among others, who are involved in the negotiation, appraisal, due diligence and regulatory approval of the separation. Transition costs are primarily employee-related costs such as recruitment expenses, costs to establish certain stand-alone functions and information technology systems, professional services fees, and other separation-related costs during the transition to separate Generation. For the purposes of reporting discontinued operations, these results also include transactions between Generation and the Utility Registrants that were historically eliminated within Exelon’s Consolidated Statements of Operations, as these transactions will be ongoing after the separation. Certain BSC costs that were historically allocated to Generation are presented as part of continuing operations in Exelon’s Consolidated Statements of Operations as these costs do not qualify as expenses of the discontinued operations per the accounting rules. For the Year Ended December 31, 2022 Operating revenues Competitive business revenues $ 1,855 Competitive business revenues from affiliates 161 Total operating revenues 2,016 Operating expenses Competitive businesses purchased power and fuel 1,138 Operating and maintenance (a) 371 Depreciation and amortization 94 Taxes other than income taxes 44 Total operating expenses 1,647 Gain on sales of assets and businesses 10 Operating income 379 Other income and (deductions) Interest expense, net (20) Other, net (281) Total other income and (deductions) (301) Income before income taxes 78 Income taxes (40) Equity in losses of unconsolidated affiliates (1) Net income 117 Net income attributable to noncontrolling interests 1 Net income from discontinued operations $ 116 __________ (a) Includes transaction and transition costs related to the separation of $52 million for the year ended December 31, 2022. There were no assets or liabilities of discontinued operations included in Exelon's Consolidated Balance Sheet as of December 31, 2024 and 2023. Constellation had net assets of $11,573 million that separated on February 1, 2022 that resulted in a reduction to Exelon's equity during the year ended December 31, 2022. Refer to the Distribution of Constellation line in Exelon's Consolidated Statement of Changes in Shareholders' Equity for further information. There w ere no d iscontinued operations included within Exelon's Consolidated Statements of Cash Flows for the years ended December 31, 2024 and December 31, 2023. The following table presents selected financial information regarding cash flows of the discontinued operations that are included within Exelon’s Consolidated Statements of Cash Flows for the year ended December 31, 2022. For the Year Ended December 31, 2022 Non-cash items included in net income from discontinued operations: Depreciation, amortization, and accretion, including nuclear fuel and energy contract amortization $ 207 Loss on sales of assets and businesses 9 Deferred income taxes and amortization of investment tax credits (143) Net fair value changes related to derivatives (59) Net realized and unrealized losses on NDT fund investments 205 Net unrealized losses on equity investments 16 Other decommissioning-related activity 36 Cash flows from investing activities: Capital expenditures (227) Collection of DPP 169 Supplemental cash flow information: Decrease in capital expenditures not paid $ (128) Increase in DPP 348 Increase in PP&E related to ARO update 335

Regulatory Matters (All Registr

Regulatory Matters (All Registrants)	12 Months Ended
	Dec. 31, 2024
Regulated Operations [Abstract]
Regulatory Matters (All Registrants)	Regulatory Matters (All Registrants) The following matters below discuss the status of material regulatory and legislative proceedings of the Registrants. Distribution Base Rate Case Proceedings The following tables show the completed and pending distribution base rate case proceedings in 2024. Completed Distribution Base Rate Case Proceedings Registrant/Jurisdiction Filing Date Service Requested Revenue Requirement Increase Approved Revenue Requirement Increase Approved ROE Approval Date Rate Effective Date ComEd - Illinois January 17, 2023 (a) Electric $ 1,487 $ 1,045 8.905% December 19, 2024 January 1, 2024 April 26, 2024 (amended on September 11, 2024) (b) Electric $ 624 $ 623 9.89% October 31, 2024 January 1, 2025 PECO - Pennsylvania March 28, 2024 Electric (c)(d) $464 $ 354 N/A (e) December 12, 2024 January 1, 2025 Natural Gas (d) $111 $ 78 BGE - Maryland February 17, 2023 (f) Electric $ 313 $ 179 9.50% December 14, 2023 January 1, 2024 Natural Gas $ 289 $ 229 9.45% Pepco - District of Columbia (g) April 13, 2023 (amended February 27, 2024) Electric $ 186 $ 123 9.50% November 26, 2024 January 1, 2025 Pepco - Maryland October 26, 2020 (amended March 31, 2021) (h) Electric $ 104 $ 52 9.55% June 28, 2021 June 28, 2021 May 16, 2023 (amended February 23, 2024) (i) Electric $ 111 $ 45 9.50% June 10, 2024 April 1, 2024 DPL - Maryland (j) May 19, 2022 Electric $ 38 $ 29 9.60% December 14, 2022 January 1, 2023 DPL - Delaware (k) December 15, 2022 (amended September 29, 2023) Electric $ 39 $ 28 9.60% April 18, 2024 July 15, 2023 ACE - New Jersey (l) February 15, 2023 (amended August 21, 2023) Electric $ 92 $ 45 9.60% November 17, 2023 December 1, 2023 __________ (a) Reflects a four-year cumulative multi-year rate plan for January 1, 2024 to December 31, 2027. The MRP was originally approved by the ICC on December 14, 2023 and was subsequently amended on January 10, 2024, April 18, 2024 and December 19, 2024. The December 19, 2024 order provided a total revenue requirement increase of $1.045 billion inclusive of rate increases of approximately $752 million in 2024, $80 million in 2025, $102 million in 2026, and $111 million in 2027. (b) On October 31, 2024, the Delivery Reconciliation Amount for 2023 defined in Rider Delivery Service Pricing Reconciliation (Rider DSPR) was approved. Rider DSPR allows for the reconciliation of the revenue requirement in effect in the final years in which formula rates are determined and until such time as new rates are established under ComEd's approved MRP. The 2024 order reconciled the delivery service rates in effect in 2023 with the actual delivery service costs incurred in 2023. The reconciliation revenue requirement provides for a weighted average debt and equity return on distribution rate base of 7.02%, inclusive of an allowed ROE of 9.89%, reflecting the monthly yields on 30-year treasury bonds plus 580 basis points. (c) PECO’s approved annual electric revenue requirement increase of $354 million is partially offset by a one-time credit of $64 million in 2025. In addition, the PAPUC approved the recovery of storm damage costs incurred by PECO in January 2024, up to $23 million, subject to review for reasonableness and prudency in PECO’s next distribution rate case. (d) On December 12, 2024, the PAPUC issued their Opinions and Orders which approved the non-unanimous partial settlements with limited modifications for both the electric and natural gas base rate cases, and denied the Weather Normalization Adjustment requested in the natural gas base rate case. (e) The PECO electric and natural gas base rate case proceedings were resolved through settlement agreements, which did not specify an approved ROE. (f) Reflects a three-year cumulative multi-year plan for January 1, 2024 through December 31, 2026. The MDPSC awarded BGE electric revenue requirement increases of $41 million, $113 million, and $25 million in 2024, 2025, and 2026, respectively, and natural gas revenue requirement increases of $126 million, $62 million, and $41 million in 2024, 2025, and 2026, respectively. Requested revenue requirement increases will be used to recover capital investments designed to increase the resilience of the electric and gas distribution systems and support Maryland's climate and regulatory initiatives. The MDPSC also approved a portion of the requested 2021 and 2022 reconciliation amounts, which will be recovered through separate electric and gas riders between March 2024 and February 2025. As such, the reconciliation amounts are not included in the approved revenue requirement increases. The 2021 reconciliation amounts are $13 million and $7 million for electric and gas, respectively, and the 2022 reconciliation amounts are $39 million and $15 million for electric and gas, respectively. In April 2024, BGE filed with the MDPSC its request for recovery of the 2023 reconciliation amounts of $79 million and $73 million for electric and gas, respectively, with supporting testimony and schedules. (g) Reflects a two-year cumulative multi-year plan for January 1, 2025, through December 31, 2026. The DCPSC awarded Pepco electric incremental revenue requirement increases of $99 million and $24 million for 2025 and 2026, respectively. (h) Reflects a three-year cumulative multi-year plan for April 1, 2021 through March 31, 2024. The MDPSC awarded Pepco electric incremental revenue requirement increases of $21 million, $16 million, and $15 million, before offsets, for the 12-month periods ending March 31, 2022, 2023, and 2024, respectively. Pepco proposed to utilize certain tax benefits to fully offset the increase through 2023 and partially offset customer rate increases in 2024. However, the MDPSC only utilized the acceleration of refunds for certain tax benefits to fully offset the increases such that customer rates remain unchanged through March 31, 2022. On February 23, 2022, the MDPSC chose to offset 25% of the cumulative revenue requirement increase through March 31, 2023. In 2021, the MDPSC deferred a decision on whether to use certain tax benefits to offset the revenue requirement increases for the 12-month period ending March 31, 2024. In December 2022 Pepco proposed that tax benefits not be used to offset the revenue requirement increases for this period. On January 25, 2023, the MDPSC accepted Pepco’s recommendations not to use tax benefits to offset revenue requirement increases for the 12-month period ending March 31, 2024. (i) Reflects the amounts requested (before offsets) and awarded for a one-year multi-year plan for April 1, 2024 through March 31, 2025. The MDPSC awarded Pepco an electric incremental revenue requirement increase of $45 million for the 12-month period ending March 31, 2025. The MDPSC did not adopt the requested revenue requirement increases of $80 million (before offsets), $51 million, and $14 million as filed for 2025, 2026, and the 2027 nine-month extension period, respectively. The order allows for Pepco to perform an annual reconciliation after the 2024 rate year. The MDPSC also approved the requested reconciliation amounts for the 12-month periods ending March 31, 2022, and March 31, 2023, which will be recovered through a rider between August 2024 through March 2026. As such, the reconciliation amounts are not included in the approved revenue requirement increases. The reconciliation amounts are $1 million, and $7 million, for the 12-month periods ending March 31, 2022, and March 31, 2023, respectively. In July 2024, Pepco filed its request with the MDPSC for recovery of $31 million for the 12-month period ended March 31, 2024, with supporting testimony and schedules. (j) Reflects a three-year cumulative multi-year plan for January 1, 2023 through December 31, 2025. The MDPSC awarded DPL electric incremental revenue requirement increases of $17 million, $6 million, and $6 million for 2023, 2024, and 2025, respectively. (k) On April 18, 2024, the DEPSC approved the Significant Storm Expense Rate Rider (Rider SSER) which will allow DPL to recover expenses associated with qualified storms. A qualified storm will be an individual storm for which DPL incurs expenses between $5 million and $15 million. The Rider SSER allows DPL to recover significant storm damage expenses for the previous 12-month period over a future 24-month period. For individual storm events for which DPL incurs expenses of more than $15 million, the future recovery period will be evaluated on a case-by-case basis and the unamortized balance will earn a return at DPL's authorized long-term cost of debt. The Rider SSER will have an annual true-up filing, subject to DEPSC review and approval. (l) Requested and approved increases are before New Jersey sales and use tax. The NJBPU awarded ACE electric revenue requirement increases of $36 million and $9 million effective December 1, 2023 and February 1, 2024, respectively. Pending Distribution Base Rate Case Proceedings Registrant/Jurisdiction Filing Date Service Requested Revenue Requirement Increase Requested ROE Expected Approval Timing DPL - Delaware (a) September 20, 2024 Natural Gas $ 36 10.65% First quarter of 2026 ACE - New Jersey (b) November 21, 2024 Electric $ 109 10.70% Fourth quarter of 2025 __________ (a) DPL can implement interim rates on April 20, 2025, subject to refund. (b) Requested increases are before New Jersey sales and use tax. ACE intends to put rates into effect on August 21, 2025, subject to refund. Transmission Formula Rates The Utility Registrants' transmission rates are each established based on a FERC-approved formula. ComEd, BGE, Pepco, DPL, and ACE are required to file an annual update to the FERC-approved formula on or before May 15, and PECO is required to file on or before May 31, with the resulting rates effective on June 1 of the same year. The annual update for ComEd is based on prior year actual costs and current year projected capital additions (initial year revenue requirement). The update for ComEd also reconciles any differences between the revenue requirement in effect beginning June 1 of the prior year and actual costs incurred for that year (annual reconciliation). The annual update for PECO is based on prior year actual costs and current year projected capital additions, accumulated depreciation, and accumulated deferred income taxes. The annual update for BGE, Pepco, DPL, and ACE is based on prior year actual costs and current year projected capital additions, accumulated depreciation, depreciation and amortization expense, and accumulated deferred income taxes. The update for PECO, BGE, Pepco, DPL, and ACE also reconciles any differences between the actual costs and actual revenues for the calendar year (annual reconciliation). For 2024, the following increases/(decreases) were included in the Utility Registrants' electric transmission formula rate updates: Registrant (a) Initial Revenue Requirement Increase Annual Reconciliation (Decrease) Increase Total Revenue Requirement Increase Allowed Return on Rate Base (b) Allowed ROE (c) ComEd $ 32 $ (12) $ 20 8.14 % 11.50 % PECO $ 2 $ 3 $ 5 7.45 % 10.35 % BGE $ 42 $ 13 $ 53 (d) 7.47 % 10.50 % Pepco $ 58 $ 15 $ 73 7.62 % 10.50 % DPL $ 7 $ 17 $ 24 7.23 % 10.50 % ACE $ 14 $ 18 $ 32 7.11 % 10.50 % __________ (a) All rates are effective June 1, 2024 - May 31, 2025, subject to review by interested parties pursuant to review protocols of each Utility Registrants' tariffs. (b) Represents the weighted average debt and equity return on transmission rate bases. For PECO, the common equity component of the ratio used to calculate the weighted average debt and equity return on the transmission formula rate base is currently capped at 55.75%. (c) The rate of return on common equity for each Utility Registrant includes a 50-basis-point incentive adder for being a member of an RTO. (d) The increase in BGE's transmission revenue requirement includes a $2 million reduction related to a FERC-approved dedicated facilities charge to recover the costs of providing transmission service to specifically designated load by BGE. Other State Regulatory Matters Illinois Regulatory Matters CEJA (Exelon and ComEd). On September 15, 2021, the Governor of Illinois signed into law CEJA. CEJA includes, among other features, (1) procurement of CMCs from qualifying nuclear-powered generating facilities, (2) a requirement to file a general rate case or a new four-year MRP no later than January 20, 2023 to establish rates effective after ComEd’s existing performance-based distribution formula rate sunsets, (3) requirements that ComEd and the ICC initiate and conduct various regulatory proceedings on subjects including ethics, spending, grid investments, and performance metrics. ComEd Electric Distribution Rates ComEd filed, and received approval for, its last performance-based electric distribution formula rate update under EIMA in 2022; those rates were in effect throughout 2023. On February 3, 2022, the ICC approved a tariff that established the process under which ComEd reconciled its 2022 and 2023 rate year revenue requirements with actual costs. Those reconciliation amounts were determined using the same process used for prior reconciliations under the performance-based electric distribution formula rate. Using that process, for the rate years 2022 and 2023 ComEd will ultimately collect revenues from customers reflecting each year’s actual recoverable costs, year-end rate base, and a weighted average debt and equity return on distribution rate base, with the ROE component based on the annual average of the monthly yields of the 30-year U.S. Treasury bonds plus 580 basis points. In April 2023, ComEd filed its first petition with the ICC to reconcile its 2022 actual costs with the approved revenue requirement that was in effect in 2022; the final order was issued on November 30, 2023, for rates beginning January 2024. On April 26, 2024, ComEd filed its final petition with the ICC to reconcile its 2023 actual costs with the approved revenue requirement that was in effect in 2023; the final order was issued on October 31, 2024, for rates beginning January 2025. Beginning in 2024, ComEd started recovering from retail customers, subject to certain exceptions, the costs it incurs to provide electric delivery services either through its electric distribution rate or other recovery mechanisms authorized by CEJA. On January 17, 2023, ComEd filed a petition with the ICC seeking approval of a MRP for 2024-2027. The MRP supports a multi-year grid plan (Grid Plan), also filed on January 17, covering planned investments on the electric distribution system within ComEd’s service area through 2027. Costs incurred during each year of the MRP are subject to ICC review and the plan’s revenue requirement for each year will be reconciled with the actual costs that the ICC determines are prudently and reasonably incurred for that year. The reconciliation is subject to adjustment for certain costs, including a limitation on recovery of costs that are more than 105% of certain costs in the previously approved MRP revenue requirement, absent a modification of the rate plan itself. Thus, for example, the rate adjustments necessary to reconcile 2024 revenues to ComEd’s actual 2024 costs incurred would take effect in January 2026 after the ICC’s review during 2025. On December 14, 2023, the ICC issued a final order. The ICC rejected ComEd’s Grid Plan as non-compliant with certain requirements of CEJA and required ComEd to file a revised Grid Plan. In the absence of an approved Grid Plan, the ICC set ComEd’s forecast revenue requirements for 2024-2027 based on ComEd's approved year-end 2022 rate base. This resulted in a total cumulative revenue requirement increase of $501 million, a $986 million total revenue reduction from the requested cumulative revenue requirement increase but remains subject to annual reconciliation in accordance with CEJA. The final order approved the process and formulas associated with the MRP reconciliation mechanisms. The ICC's December 2023 order also denied ComEd's ability to earn a return on its pension asset. On December 22, 2023, ComEd filed an application for rehearing on several findings in the final order including the use of the 2022 year-end rate base to establish forecast revenue requirements for 2024-2027, ROE, pension asset return, and capital structure. On January 10, 2024, ComEd’s app lication for rehearing was denied on all issues except for the order’s use of the 2022 year-end rate base. On April 18, 2024, the ICC issued its final order on ComEd's January 31, 2024 rehearing motion, which approved the use of the forecasted year-end 2023 rate base that resulted in increased revenue requirements for 2024-2027. These revenue requirements determined during the rehearing process established base revenue requirements until the ICC approved the Refiled Grid Plan on December 19, 2024. On January 10, 2024, ComEd also filed an appeal in the Illinois Appellate Court of the issues on which rehearing was denied, including but not limited to the allowed ROE, 50% equity ratio, and denial of a return on ComEd’s pension asset. There is no deadline by when the appellate court must rule. On March 13, 2024, ComEd filed its Refiled Grid Plan with supporting testimony and schedules with the ICC and subsequently on March 15, 2024, ComEd also filed a petition to adjust its MRP to authorize increased rates consistent with the Refiled Grid Plan. On December 19, 2024, the ICC approved the Refiled Grid Plan and adjusted the approved MRP with rates effective on January 1, 2025. The final approved MRP, as adjusted, which reflects the Refiled Grid Plan, resulted in a total cumulative revenue requirement increase of $1.045 billion over the 2024-2027 plan years and remains subject to annual reconciliations in accordance with CEJA. In January 2022, ComEd filed a request with the ICC proposing performance metrics that would be used in determining ROE incentives and penalties in the event ComEd filed a MRP in January 2023. On September 27, 2022, the ICC issued a final order approving seven performance metrics that provide symmetrical performance adjustments of 32 total basis points to ComEd’s rate of return on common equity based on the extent to which ComEd achieves the annual performance goals. On November 10, 2022, the ICC granted ComEd's application for rehearing, in part. On April 5, 2023, the ICC issued its final order on rehearing for the performance and tracking metrics proceeding, in which the ICC declined to adopt ComEd's proposed modifications to the reliability and peak load reduction performance metrics. Efforts are underway to implement the performance metrics, which took effect on January 1, 2024. ComEd will make its initial filing in 2025 to assess performance achieved under the metrics in 2024, and to determine any ROE adjustment, which would take effect in 2026. In 2024, ComEd has recognized an estimate of the impact of the performance metrics' adjustment. Carbon Mitigation Credit CEJA establishes decarbonization requirements for Illinois as well as programs to support the retention and development of emissions-free sources of electricity. ComEd is required to purchase CMCs from participating nuclear-powered generating facilities between June 1, 2022 and May 31, 2027. The price to be paid for each CMC was established through a competitive bidding process that included consumer-protection measures that capped the maximum acceptable bid amount and a formula that reduces CMC prices by an energy price index, the base residual auction capacity price in the ComEd zone of PJM, and the monetized value of any federal tax credit or other subsidy if applicable. The seller has not provided notification to ComEd or the IPA that any subsidies or tax credits, such as nuclear production tax credits that became available for electricity generated beginning January 1, 2024, have been monetized and the IPA did not adjust the CMC price paid by ComEd in 2024. The consumer protection measures contained in CEJA will result in net payments to ComEd ratepayers if the energy index, the capacity price and applicable federal tax credits or subsidy exceed the CMC contract price. Beginning with the June 2022 monthly billing period, ComEd began issuing credits and/or charges to its retail customers under its CMC rider, the Rider Carbon-Free Resource Adjustment (Rider CFRA). A regulatory asset is recorded for the difference between ComEd's costs associated with the procurement of CMCs from participating nuclear power generating facilities and revenues received from customers. The balance as of December 31, 2024 is $179 million. Under CEJA, the costs of procuring CMCs, including carrying costs, are recovered through Rider CFRA. As originally approved by the ICC, Rider CFRA provides for an annual reconciliation and true-up to actual costs incurred or credits received by ComEd to purchase CMCs, with any difference to be credited to or collected from ComEd’s retail customers in subsequent periods. The difference between the net payments to (or receivables from) ComEd ratepayers and the credits received by ComEd to purchase CMCs is recorded to Purchased power expense with an offset to the regulatory asset (or regulatory liability). On December 21, 2022, ComEd filed an amendment to Rider CFRA proposing that it recover costs or provide credits faster than the tariff allows, implement monthly reconciliations, and allow ComEd to adjust Rider CFRA rates based not only on anticipated differences but also past payments or credits, and implement monthly reconciliations beginning with the June 2023 delivery period. The ICC approved the proposal on January 19, 2023. In addition, on March 24, 2023, ComEd submitted revisions to Rider CFRA which clarified the methodology for calculating interest to be included in the annual reconciliation associated with the June 2022 through May 2023 delivery year. The ICC approved the proposal on April 20, 2023. On February 2, 2024, ComEd filed a petition with the ICC to initiate the reconciliation proceeding for the costs incurred in connection with the procurement of CMCs during the delivery year beginning June 1, 2022 and extending through May 31, 2023. Excess Deferred Income Taxes The ICC initiated a docket to accelerate and fully credit to customers TCJA unprotected property-related EDIT no later than December 31, 2025. On July 7, 2022, the ICC issued a final order on the schedule for the acceleration of EDIT amortization, adopting the proposal as submitted by several parties, including ComEd, ICC Staff, the Illinois Attorney General's Office, and the Citizens Utility Board. EDIT amortization will be credited to customers through a new rider from January 1, 2023 through December 31, 2025. Energy Efficiency CEJA extends ComEd’s current cumulative annual energy efficiency MWh savings goals through 2040, adds expanded electrification measures to those goals, increases low-income commitments, and adds a new performance adjustment to the energy efficiency formula rate. ComEd expects its annual spend to increase in 2023 through 2040 to achieve these energy efficiency MWh savings goals, which is deferred as a separate regulatory asset that is recovered through the energy efficiency formula rate over the weighted average useful life, as approved by the ICC, of the related energy efficiency measures. Energy Efficiency Formula Rate (Exelon and ComEd). FEJA allows ComEd to defer energy efficiency costs (except for any voltage optimization costs which are recovered through electric distribution rates) as a separate regulatory asset that is recovered through the energy efficiency formula rate over the weighted average useful life, as approved by the ICC, of the related energy efficiency measures. ComEd earns a return on the energy efficiency regulatory asset at a rate equal to a weighted average cost of capital, which is based on a year-end capital structure and a statutorily-based formula based on long-term treasury debt. The ROE that ComEd earns on its energy efficiency regulatory asset is subject to a maximum downward or upward adjustment of 200 basis points if ComEd’s cumulative persisting annual MWh savings falls short of or exceeds specified percentage benchmarks of its annual incremental savings goal. ComEd is required to file an update to its energy efficiency formula rate on or before June 1 st each year, with resulting rates effective in January of the following year. The annual update is based on projected rate year energy efficiency costs, PJM capacity revenues, and the projected year-end regulatory asset balance less any related deferred income taxes (initial year revenue requirement). The update also reconciles any differences between the revenue requirement in effect for the prior year and actual costs incurred from the year (annual reconciliation). The approved energy efficiency formula rate also provides for revenue decoupling provisions. During 2024, the ICC approved the following total increases in ComEd's requested energy efficiency revenue requirement: Filing Date Requested Revenue Requirement Increase Approved Revenue Requirement Increase (a) Approved ROE Approval Date Rate Effective Date May 30, 2024 $ 58 $ 58 9.89 % December 5, 2024 January 1, 2025 _________ (a) ComEd's 2025 approved revenue requirement above reflects an increase of $66 million for the initial year revenue requirement for 2025 and a decrease of $8 million related to the annual reconciliation for 2023. The revenue requirement for 2025 provides for a weighted average debt and equity return on the energy efficiency regulatory asset and rate base of 7.02% inclusive of an allowed ROE of 9.89%, reflecting the monthly average yields for 30-year treasury bonds plus 580 basis points. The revenue requirement for the 2023 reconciliation year provides for a weighted average debt and equity return on the energy efficiency regulatory asset and rate base of 7.24% inclusive of an allowed ROE of 10.34%, which includes an upward performance adjustment that increased the ROE. The performance adjustment can either increase or decrease the ROE based upon the achievement of energy efficiency savings goals. See table below for ComEd's regulatory assets associated with its energy efficiency formula rate. Maryland Regulatory Matters Maryland Revenue Decoupling (Exelon, BGE, PHI, Pepco, and DPL). In 1998, the MDPSC approved natural gas monthly rate adjustments for BGE and in 2007, the MDPSC approved electric monthly rate adjustments for BGE and BSAs for Pepco and DPL, all of which are decoupling mechanisms. As a result of the decoupling mechanisms, certain Operating revenues from electric and natural gas distribution at BGE and Operating revenues from electric distribution at Pepco Maryland (see also District of Columbia Revenue Decoupling below for Pepco District of Columbia) and DPL are not intended to be impacted by abnormal weather or usage per customer. For BGE, Pepco, and DPL, the decoupling mechanism eliminates the impacts of abnormal weather or customer usage by recognizing revenues based on an authorized distribution amount per customer by customer class. Operating revenues from electric and natural gas distribution at BGE and Operating revenues from electric distribution at Pepco Maryland and DPL are, however, impacted by changes in the number of customers. EmPOWER Maryland Cost Recovery (Exelon, BGE, PHI, Pepco and DPL). On December 29, 2023, the MDPSC issued an order authorizing the next three-year program cycle for EmPOWER Maryland and approved various proposals by the program administrators to implement new energy efficiency programs for the 2024-2026 program cycle, as well as continue operating core programs. Historically, BGE, Pepco, and DPL deferred most of their energy efficiency program costs to a regulatory asset and either deferred most of their demand response program costs to a regulatory asset or capitalized them. Beginning in 2024, BGE, Pepco, and DPL will begin deferring less energy efficiency and demand response program costs to a regulatory asset. Additionally, as part of the order, the MDPSC directed BGE, Pepco, and DPL to extend the amortization of unamortized costs as of December 31, 2023 from 5 to 7 years to mitigate customer bill impacts. District of Columbia Regulatory Matters District of Columbia Revenue Decoupling (Exelon, PHI, and Pepco). In 2009, the DCPSC approved a BSA, which is a decoupling mechanism. As a result of the decoupling mechanism, Operating revenues from electric distribution at Pepco District of Columbia (see also Maryland Revenue Decoupling above for Pepco Maryland) are not intended to be impacted by abnormal weather or usage per customer. The decoupling mechanism eliminates the impacts of abnormal weather or customer usage by recognizing revenues based on an authorized distribution amount per customer by customer class. Historically, operating revenues from electric distribution at Pepco District of Columbia are, however, impacted by changes in the number of customers. Beginning in 2025, based on modifications approved by the DCPSC, Pepco District of Columbia will recognize revenues on an authorized distribution amount per customer class basis, and operating revenues from electric distribution will not be impacted by changes in the number of customers. New Jersey Regulatory Matters Conservation Incentive Program (CIP) (Exelon, PHI, and ACE). On September 25, 2020, ACE filed an application with the NJBPU as was required seeking approval to implement a portfolio of energy efficiency programs pursuant to New Jersey’s clean energy legislation. The filing included a request to implement a CIP that would eliminate the favorable and unfavorable impacts of weather and customer usage patterns on distribution revenues for most customers. The CIP compares current distribution revenues by customer class to approved target revenues established in ACE’s most recent distribution base rate case. The CIP is calculated annually and recovery is subject to certain conditions, including an earnings test and ceilings on customer rate increases. On April 27, 2021, the NJBPU approved the settlement filed by ACE and the third parties to the proceeding. The approved settlement addresses all material aspects of ACE’s filing, including ACE’s ability to implement the CIP prospectively effective July 1, 2021. As a result of this decoupling mechanism, operating revenues are no longer intended to be impacted by abnormal weather or usage for most customers. Starting in third quarter of 2021, ACE has recorded alternative revenue program revenues for its best estimate of the distribution revenue impacts resulting from future changes in CIP rates that it believes are probable of approval by the NJBPU in accordance with this mechanism. Termination of Energy Procurement Provisions of PPAs (Exelon, PHI, and ACE). On December 22, 2021, ACE filed with the NJBPU a petition to terminate the provisions in the PPAs to purchase electricity from two coal-powered generation facilities located in the state of New Jersey. The petition was approved by the NJBPU on March 23, 2022. Upon closing of the transaction on March 31, 2022, ACE recognized a liability of $203 million for the contract termination fee and recognized a corresponding regulatory asset of $203 million. The liability has been paid in full as of December 31, 2024. For the year ended December 31, 2024 and 2023, ACE has respectively paid $49 million and $88 million of the liability, which is recorded in Changes in Other assets and liabilities in Exelon's, PHI's, and ACE's Consolidated Statements of Cash Flows. ACE Infrastructure Investment Program Filings (Exelon, PHI, and ACE). On October 31, 2022, ACE filed with the NJBPU an IIP, called “Powering the Future”, proposing to seek recovery through a new component of ACE’s rider mechanism, totaling $379 million, over the four-year period of July 1, 2023, to June 30, 2027. The new IIP will allow ACE to invest in projects that are designed to enhance the reliability, resiliency, and safety of the service ACE provides to its customers. On June 15, 2023, ACE entered into a settlement agreement with other parties, which allows for a recovery totaling $93 million of reliability related capital investments from July 1, 2023, through June 30, 2027. ACE will have the option of seeking approval from the NJBPU to extend the end date of the IIP beyond June 30, 2027, if ACE determines an extension is necessary. On June 29, 2023, the NJBPU adopted the settlement agreement and issued an order approving the program. Advanced Metering Infrastructure Filing (Exelon, PHI,

Revenue from Contracts with Cus

Revenue from Contracts with Customers (All Registrants)	12 Months Ended
	Dec. 31, 2024
Revenue from Contract with Customer [Abstract]
Revenue from Contracts with Customers (All Registrants)	Revenue from Contracts with Customers (All Registrants) The Registrants recognize revenue from contracts with customers to depict the transfer of goods or services to customers at an amount that the entities expect to be entitled to in exchange for those goods or services. The primary sources of revenue include regulated electric and gas tariff sales, distribution, and transmission services. The performance obligations, revenue recognition, and payment terms associated with these sources of revenue are further discussed in the table below. There are no significant financing components for these sources of revenue and no variable consideration. Unless otherwise noted, for each of the significant revenue categories and related performance obligations described below, the Registrants have the right to consideration from the customer in an amount that corresponds directly with the value transferred to the customer for the performance completed to date. Therefore, the Registrants generally recognize revenue in the amount for which they have the right to invoice the customer. As a result, there are generally no significant judgments used in determining or allocating the transaction price. Revenue Source Description Performance Obligation Timing of Revenue Recognition Payment Terms Regulated Electric and Gas Tariff Sales Sales of electricity and electricity distribution services (the Utility Registrants) and natural gas and gas distribution services (PECO, BGE, and DPL) to residential, commercial, industrial, and governmental customers through regulated tariff rates approved by state regulatory commissions. Delivery of electricity and/or natural gas. Over time (each day) as the electricity and/or natural gas is delivered to customers. Tariff sales are generally considered daily contracts as customers can discontinue service at any time. (a) Within the month following delivery of the electricity or natural gas to the customer. Regulated Transmission Services The Utility Registrants provide open access to their transmission facilities to PJM, which directs and controls the operation of these transmission facilities and accordingly compensates the Utility Registrants pursuant to filed tariffs at cost-based rates approved by FERC. Various including (i) Network Integration Transmission Services ("NITS"), (ii) scheduling, system control and dispatch services, and (iii) access to the wholesale grid. Over time utilizing output methods to measure progress towards completion. (b) Paid weekly by PJM. __________ (a) Electric and natural gas utility customers have the choice to purchase electricity or natural gas from competitive electric generation and natural gas suppliers. While the Utility Registrants are required under state legislation to bill their customers for the supply and distribution of electricity and/or natural gas, they recognize revenue related only to the distribution services when customers purchase their electricity or natural gas from competitive suppliers. (b) Passage of time is used for NITS and access to the wholesale grid and MWhs of energy transported over the wholesale grid is used for scheduling, system control and dispatch services. The Utility Registrants do not incur any material costs to obtain or fulfill contracts with customers. Contract Liabilities The Registrants record contract liabilities when consideration is received or due prior to the satisfaction of the performance obligations. The Registrants record contract liabilities in Other current liabilities and Other noncurrent liabilities in the Registrants' Consolidated Balance Sheets. On July 1, 2020, Pepco, DPL, and ACE each entered into a collaborative arrangement ("Agreement") with an unrelated owner and manager of communication infrastructure (the "Buyer"). Under this arrangement, Pepco, DPL, and ACE sold a 60% undivided interest in their respective portfolios of transmission tower attachment agreements with telecommunications companies to the Buyer, in addition to transitioning management of the day-to-day operations of the jointly-owned agreements to the Buyer for 35 years, while retaining the safe and reliable operation of its utility assets. In return, Pepco, DPL, and ACE will provide the Buyer limited access on the portion of the towers where the equipment resides for the purposes of managing the agreements for the benefit of Pepco, DPL, ACE, and the Buyer. Pursuant to the Agreement, Pepco, DPL, and ACE have the option ("Payment Option"), but not obligation, to sell two additional 10% undivided interests in the tower attachment agreements to the Buyer for specified consideration. In addition, for an initial period of three years and two, two-year extensions that are subject to certain conditions, the Buyer has the exclusive right to enter into new agreements with telecommunications companies and to receive a specified undivided percentage interest in those new agreements as set forth in the Agreement. Pepco, DPL, and ACE received cash and recorded contract liabilities as of July 1, 2020. The revenue attributable to this arrangement will be recognized as Electric operating revenues over the 35 years under the Agreement. During the fourth quarter of 2023, Pepco, DPL, and ACE entered into an amendment to the Agreement (“Amendment”) to modify the terms of the Payment Option and the conditions to exercise the exclusive right extensions. Concurrently, Pepco, DPL and ACE exercised both Payment Options which also triggered the extension of the exclusive right period until 2027. The Amendment and executed Payment Options represent a contract modification that is accounted for prospectively in accordance with authoritative guidance. Pepco, DPL and ACE received cash and recorded an increase to the contract liabilities as of December 31, 2023 as shown in the table below. The revenue will be recognized as Electric operating revenues over the remaining term of the Agreement (approximately 31 years from the Amendment date). The following table provides a rollforward of the contract liabilities reflected in Exelon's, PHI's, Pepco's, DPL's, and ACE'S Consolidated Balance Sheets. As of December 31, 2024, 2023, and 2022, ComEd's, PECO's, and BGE's contract liabilities were not material. Exelon (a) PHI (a) Pepco (a) DPL (a) ACE (a) Balance at December 31, 2022 $ 101 $ 101 $ 81 $ 10 $ 10 Consideration received 39 39 31 4 4 Revenues recognized (7) (7) (5) (1) (1) Balance at December 31, 2023 $ 133 $ 133 $ 107 $ 13 $ 13 Revenues recognized (6) (6) (6) — — Balance at December 31, 2024 $ 127 $ 127 $ 101 $ 13 $ 13 __________ (a) Revenues recognized in the years ended December 31, 2024 and 2023, were included in the contract liabilities at December 31, 2023 and 2022, respectively. Transaction Price Allocated to Remaining Performance Obligations The following table shows the amounts of future revenues expected to be recorded in each year for performance obligations that are unsatisfied or partially unsatisfied as of December 31, 2024. This disclosure only includes contracts for which the total consideration is fixed and determinable at contract inception. The average contract term varies by customer type and commodity but ranges from one month to several years. This disclosure excludes the Utility Registrants' gas and electric tariff sales contracts and transmission revenue contracts as they generally have an original expected duration of one year or less and, therefore, do not contain any future, unsatisfied performance obligations to be included in this disclosure. Year Exelon PHI Pepco DPL ACE 2025 $ 7 $ 7 $ 5 $ 1 $ 1 2026 6 6 5 1 — 2027 5 5 5 — — 2028 5 5 5 — — 2029 and thereafter 104 104 81 11 12 Total $ 127 $ 127 $ 101 $ 13 $ 13 Revenue Disaggregation The Registrants disaggregate revenue recognized from contracts with customers into categories that depict how the nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factors. See Note 5 — Segment Information for the presentation of the Registrant's revenue disaggregation.

Segment Information (All Regist

Segment Information (All Registrants)	12 Months Ended
	Dec. 31, 2024
Segment Reporting [Abstract]
Segment Information (All Registrants)	Segment Information (All Registrants) Operating segments for each of the Registrants are determined based on information used by the CODMs in deciding how to evaluate performance and allocate resources at each of the Registrants. The Chief Executive Officer is the CODM for Exelon. For PHI and each of the Utility Registrants, CODM responsibilities are shared by Exelon's Chief Operating Officer and the Utility Registrant's Chief Executive Officer. Exelon has six reportable segments, which include ComEd, PECO, BGE, and PHI's three reportable segments consisting of Pepco, DPL, and ACE. ComEd, PECO, BGE, Pepco, DPL, and ACE each represent a single reportable segment, and as such, no separate segment information is provided for these Registrants. Exelon, ComEd, PECO, BGE, Pepco, DPL, and ACE's CODMs rely on a variety of business considerations, including net income, in evaluating segment performance, determining reinvestment of profits, and establishing the amounts of dividend distributions. The separation of Constellation Energy Corporation, including Generation and its subsidiaries, meets the criteria for discontinued operations and as such, results of operations are presented as discontinued operations and have been excluded from continuing operations for all periods presented. Furthermore, the reportable segment information related to the discontinued operations has been excluded from the tables presented below. See Note 2 — Discontinued Operations for additional information. An analysis and reconciliation of the Registrants' reportable segment information to the respective information in the consolidated financial statements for the years ended December 31, 2024, 2023, and 2022 is as follows: ComEd PECO BGE PHI Other (a) Intersegment Exelon Operating revenues (b) : 2024 Electric revenues $ 8,219 $ 3,325 $ 3,436 $ 6,258 $ — $ (22) $ 21,216 Natural gas revenues — 648 990 180 — (6) 1,812 Shared service and other revenues — — — 10 1,865 (1,875) — Total operating revenues $ 8,219 $ 3,973 $ 4,426 $ 6,448 $ 1,865 $ (1,903) $ 23,028 2023 Electric revenues $ 7,844 $ 3,202 $ 3,109 $ 5,812 $ — $ (51) $ 19,916 Natural gas revenues — 692 918 205 — (4) 1,811 Shared service and other revenues — — — 9 1,759 (1,768) — Total operating revenues $ 7,844 $ 3,894 $ 4,027 $ 6,026 $ 1,759 $ (1,823) $ 21,727 2022 Electric revenues $ 5,761 $ 3,165 $ 2,871 $ 5,317 $ — $ (31) $ 17,083 Natural gas revenues — 738 1,024 238 — (5) 1,995 Shared service and other revenues — — — 10 1,823 (1,833) — Total operating revenues $ 5,761 $ 3,903 $ 3,895 $ 5,565 $ 1,823 $ (1,869) $ 19,078 Less: Purchased power ComEd PECO BGE PHI Other (a) Intersegment Exelon 2024 $ 3,042 $ 1,265 $ 1,460 $ 2,447 $ — $ — $ 8,214 2023 2,816 1,270 1,311 2,250 — 1 7,648 2022 1,050 1,160 1,186 1,984 — — 5,380 Purchased fuel 2024 $ — $ 212 $ 191 $ 66 $ — $ — $ 469 2023 — 274 220 98 — 1 593 2022 — 342 363 129 — — 834 Purchased power and fuel from affiliates 2024 $ — $ — $ — $ — $ — $ — $ — 2023 — — — — — — — 2022 59 33 18 51 — (2) 159 Operating and maintenance 2024 $ 1,284 $ 875 $ 790 $ 1,046 $ 1,733 $ (788) $ 4,940 2023 1,096 786 520 1,110 1,861 (814) 4,559 2022 1,094 791 670 966 1,907 (755) 4,673 Operating and maintenance from affiliates 2024 $ 419 $ 245 $ 246 $ 204 $ 41 $ (1,155) $ — 2023 354 217 221 179 37 (1,008) — 2022 318 201 207 191 88 (1,005) — Depreciation and amortization 2024 $ 1,514 $ 428 $ 638 $ 947 $ 67 $ — $ 3,594 2023 1,403 397 654 990 62 — 3,506 2022 1,323 373 630 938 61 — 3,325 Taxes other than income taxes 2024 $ 376 $ 218 $ 345 $ 528 $ 37 $ — $ 1,504 2023 369 202 319 487 31 — 1,408 2022 374 202 302 475 37 — 1,390 (Gain) loss on sale of assets and businesses 2024 $ (5) $ (4) $ — $ 1 $ (4) $ — $ (12) 2023 — — — (9) (1) — (10) 2022 2 — — — — — 2 Interest expense, net (c) 2024 $ 487 $ 221 $ 216 $ 373 $ 592 $ — $ 1,889 2023 464 192 182 323 545 (2) 1,704 2022 401 165 152 292 415 (3) 1,422 Interest expense to affiliates, net (c) 2024 $ 14 $ 11 $ — $ 3 $ (3) $ — $ 25 2023 13 9 — — 1 2 25 2022 13 12 — — (2) 2 25 ComEd PECO BGE PHI Other (a) Intersegment Exelon Other, net 2024 $ (94) $ (37) $ (36) $ (97) $ (38) $ 40 $ (262) 2023 (75) (36) (18) (108) (190) 19 (408) 2022 (54) (31) (21) (78) (290) (61) (535) Income taxes 2024 $ 116 $ (12) $ 49 $ 189 $ (135) $ — $ 207 2023 314 20 133 116 (207) (2) 374 2022 264 79 8 9 — (11) 349 Net income (loss) from continuing operations 2024 $ 1,066 $ 551 $ 527 $ 741 $ (425) $ — $ 2,460 2023 1,090 563 485 590 (380) (20) 2,328 2022 917 576 380 608 (393) (34) 2,054 Supplemental segment information Intersegment revenues (d) 2024 $ 8 $ 10 $ 10 $ 10 $ 1,855 $ (1,893) $ — 2023 16 9 9 9 1,750 (1,793) — 2022 16 7 15 10 1,823 (1,865) 6 Capital expenditures 2024 $ 2,195 $ 1,553 $ 1,420 $ 1,863 $ 66 $ — $ 7,097 2023 2,576 1,426 1,367 1,988 54 — 7,411 2022 2,506 1,349 1,262 1,709 95 — 6,921 Total assets 2024 $ 44,750 $ 17,123 $ 15,542 $ 28,297 $ 6,012 $ (3,940) $ 107,784 2023 42,827 15,595 14,331 27,066 6,374 (4,337) 101,856 __________ (a) Other primarily includes Exelon’s corporate operations, shared service entities, and other financing and investment activities. (b) Includes gross utility tax receipts from customers. The offsetting remittance of utility taxes to the governing bodies is recorded in Taxes other than income taxes in the Registrants’ Consolidated Statements of Operations and Comprehensive Income. See Note 22 — Supplemental Financial Information for additional information on total utility taxes. (c) Interest expense, net and Interest expense to affiliates, net are primarily inclusive of Interest expense, which is partially offset by an immaterial amount of interest income. (d) See Note 23 — Related Party Transactions for additional information on intersegment revenues. PHI: Pepco DPL ACE Other (a) Intersegment PHI Operating revenues (b) : 2024 Electric revenues $ 3,039 $ 1,607 $ 1,628 $ — $ (16) $ 6,258 Natural gas revenues — 180 — — — 180 Shared service and other revenues — — — 438 (428) 10 Total operating revenues $ 3,039 $ 1,787 $ 1,628 $ 438 $ (444) $ 6,448 2023 Electric revenues $ 2,824 $ 1,483 $ 1,522 $ 1 $ (18) $ 5,812 Natural gas revenues — 205 — — — 205 Shared service and other revenues — — — 422 (413) 9 Total operating revenues $ 2,824 $ 1,688 $ 1,522 $ 423 $ (431) $ 6,026 2022 Electric revenues $ 2,531 $ 1,357 $ 1,431 $ — $ (2) $ 5,317 Natural gas revenues — 238 — — — 238 Shared service and other revenues — — — 391 (381) 10 Total operating revenues $ 2,531 $ 1,595 $ 1,431 $ 391 $ (383) $ 5,565 Less: Purchased power 2024 $ 1,055 $ 694 $ 698 $ — $ — $ 2,447 2023 974 639 637 — — 2,250 2022 795 567 622 — — 1,984 Purchased fuel 2024 $ — $ 66 $ — $ — $ — $ 66 2023 — 98 — — — 98 2022 — 129 — — — 129 Purchased power and fuel from affiliates 2024 $ — $ — $ — $ — $ — $ — 2023 — — — — — — 2022 39 10 2 — — 51 Operating and maintenance 2024 $ 283 $ 196 $ 206 $ 361 $ — $ 1,046 2023 336 193 233 348 — 1,110 2022 284 183 189 310 — 966 Operating and maintenance from affiliates 2024 $ 251 $ 181 $ 162 $ 54 $ (444) $ 204 2023 236 171 153 50 (431) 179 2022 223 166 142 43 (383) 191 Depreciation and amortization 2024 $ 407 $ 245 $ 278 $ 17 $ — $ 947 2023 441 244 283 22 — 990 Pepco DPL ACE Other (a) Intersegment PHI 2022 417 232 261 28 — 938 Taxes other than income taxes 2024 $ 424 $ 79 $ 9 $ 16 $ — $ 528 2023 390 75 8 14 — 487 2022 382 72 9 12 — 475 Loss (gain) on sale of assets and businesses 2024 $ 1 $ — $ — $ — $ — $ 1 2023 (9) — — — — (9) 2022 — — — — — — Interest expense, net (c) 2024 $ 195 $ 94 $ 74 $ 10 $ — $ 373 2023 165 74 72 12 — 323 2022 150 66 66 9 1 292 Interest expense to affiliates, net (c) 2024 $ (3) $ (1) $ 5 $ 2 $ — $ 3 2023 — — — — — — 2022 — — — — — — Other, net 2024 $ (54) $ (25) $ (14) $ (4) $ — $ (97) 2023 (66) (18) (20) (4) — (108) 2022 (55) (13) (11) 2 (1) (78) Income taxes 2024 $ 90 $ 49 $ 55 $ (5) $ — $ 189 2023 51 35 36 (6) — 116 2022 (9) 14 3 1 — 9 Net income (loss) from continuing operations 2024 $ 390 $ 209 $ 155 $ (13) $ — $ 741 2023 306 177 120 (13) — 590 2022 305 169 148 (14) — 608 Supplemental segment information Intersegment revenues (d) 2024 $ 7 $ 7 $ 2 $ 438 $ (444) $ 10 2023 9 8 2 422 (432) 9 2022 5 6 2 380 (383) 10 Capital expenditures 2024 $ 929 $ 556 $ 373 $ 5 $ — $ 1,863 2023 957 562 460 9 — 1,988 2022 874 430 398 7 — 1,709 Total assets 2024 $ 12,000 $ 6,421 $ 5,349 $ 4,567 $ (40) $ 28,297 2023 11,330 5,993 5,157 4,627 (41) 27,066 __________ (a) Other primarily includes PHI’s corporate operations, shared service entities, and other financing and investment activities. (b) Includes gross utility tax receipts from customers. The offsetting remittance of utility taxes to the governing bodies is recorded in Taxes other than income taxes in the Registrants’ Consolidated Statements of Operations and Comprehensive Income. See Note 22 — Supplemental Financial Information for additional information on total utility taxes. (c) Interest expense, net is primarily inclusive of Interest expense, which is partially offset by an immaterial amount of Interest income. (d) Includes intersegment revenues with ComEd, PECO, and BGE, which are eliminated at Exelon. Electric and Gas Revenue by Customer Class (Utility Registrants): The following tables disaggregate the Registrants' revenues recognized from contracts with customers into categories that depict how the nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factors. For the Utility Registrants, the disaggregation of revenues reflects the two primary utility services of electric sales and natural gas sales (where applicable), with further disaggregation of these tariff sales provided by major customer groups. Exelon's disaggregated revenues are consistent with the Utility Registrants, but exclude any intercompany revenues. 2024 Revenues from contracts with customers ComEd PECO BGE PHI Pepco DPL ACE Electric revenues Residential $ 3,809 $ 2,169 $ 2,038 $ 3,256 $ 1,413 $ 943 $ 900 Small commercial & industrial 2,259 547 360 681 184 253 244 Large commercial & industrial 1,145 261 557 1,372 1,053 123 196 Public authorities & electric railroads 60 29 31 74 37 17 20 Other (a) 1,080 296 414 871 327 270 280 Total electric revenues (b) $ 8,353 $ 3,302 $ 3,400 $ 6,254 $ 3,014 $ 1,606 $ 1,640 Natural gas revenues Residential $ — $ 445 $ 625 $ 108 $ — $ 108 $ — Small commercial & industrial — 157 110 43 — 43 — Large commercial & industrial — — 204 5 — 5 — Transportation — 28 — 17 — 17 — Other (c) — 16 18 7 — 7 — Total natural gas revenues (d) $ — $ 646 $ 957 $ 180 $ — $ 180 $ — Total revenues from contracts with customers $ 8,353 $ 3,948 $ 4,357 $ 6,434 $ 3,014 $ 1,786 $ 1,640 Other revenues Revenues from alternative revenue programs $ (151) $ 6 $ 52 $ 1 $ 15 $ (2) $ (12) Other electric revenues (e) 17 17 14 13 10 3 — Other natural gas revenues (e) — 2 3 — — — — Total other revenues $ (134) $ 25 $ 69 $ 14 $ 25 $ 1 $ (12) Total revenues for reportable segments $ 8,219 $ 3,973 $ 4,426 $ 6,448 $ 3,039 $ 1,787 $ 1,628 2023 Revenues from contracts with customers ComEd PECO BGE PHI Pepco DPL ACE Electric revenues Residential $ 3,565 $ 2,090 $ 1,765 $ 2,845 $ 1,236 $ 827 $ 782 Small commercial & industrial 1,857 526 331 651 176 246 229 Large commercial & industrial 824 249 528 1,420 1,087 126 207 Public authorities & electric railroads 51 30 29 67 34 16 17 Other (a) 965 298 402 760 258 250 260 Total electric revenues (b) $ 7,262 $ 3,193 $ 3,055 $ 5,743 $ 2,791 $ 1,465 $ 1,495 Natural gas revenues Residential $ — $ 473 $ 568 $ 122 $ — $ 122 $ — Small commercial & industrial — 172 100 53 — 53 — Large commercial & industrial — 1 161 4 — 4 — Transportation — 27 — 16 — 16 — Other (c) — 17 37 10 — 10 — Total natural gas revenues (d) $ — $ 690 $ 866 $ 205 $ — $ 205 $ — Total revenues from contracts with customers $ 7,262 $ 3,883 $ 3,921 $ 5,948 $ 2,791 $ 1,670 $ 1,495 Other revenues Revenues from alternative revenue programs $ 556 $ (7) $ 84 $ 64 $ 22 $ 15 $ 27 Other electric revenues (e) 26 16 16 14 11 3 — Other natural gas revenues (e) — 2 6 — — — — Total other revenues $ 582 $ 11 $ 106 $ 78 $ 33 $ 18 $ 27 Total revenues for reportable segments $ 7,844 $ 3,894 $ 4,027 $ 6,026 $ 2,824 $ 1,688 $ 1,522 2022 Revenues from contracts with customers ComEd PECO BGE PHI Pepco DPL ACE Electric revenues Residential $ 3,304 $ 2,026 $ 1,564 $ 2,590 $ 1,076 $ 750 $ 764 Small commercial & industrial 1,173 521 327 607 155 235 217 Large commercial & industrial 5 299 567 1,422 1,083 137 202 Public authorities & electric railroads 29 30 27 64 34 15 15 Other (a) 955 271 398 695 208 227 252 Total electric revenues (b) $ 5,466 $ 3,147 $ 2,883 $ 5,378 $ 2,556 $ 1,364 $ 1,450 Natural gas revenues Residential $ — $ 512 $ 678 $ 127 $ — $ 127 $ — Small commercial & industrial — 186 111 55 — 55 — Large commercial & industrial — — 183 12 — 12 — Transportation — 26 — 15 — 15 — Other (c) — 12 68 29 — 29 — Total natural gas revenues (d) $ — $ 736 $ 1,040 $ 238 $ — $ 238 $ — Total revenues from contracts with customers $ 5,466 $ 3,883 $ 3,923 $ 5,616 $ 2,556 $ 1,602 $ 1,450 Other revenues Revenues from alternative revenue programs $ 267 $ 2 $ (47) $ (59) $ (31) $ (9) $ (19) Other electric revenues (e) 28 16 14 8 6 2 — Other natural gas revenues (e) — 2 5 — — — — Total other revenues $ 295 $ 20 $ (28) $ (51) $ (25) $ (7) $ (19) Total revenues for reportable segments $ 5,761 $ 3,903 $ 3,895 $ 5,565 $ 2,531 $ 1,595 $ 1,431 __________ (a) Includes transmission revenue from PJM, wholesale electric revenue and mutual assistance revenue. (b) Includes operating revenues from affiliates in 2024, 2023, and 2022 respectively of: • $8 million, $16 million, and $16 million at ComEd • $7 million, $7 million, and $7 million at PECO • $7 million, $6 million, and $7 million at BGE • $10 million, $9 million, and $10 million at PHI • $7 million, $9 million, and $5 million at Pepco • $7 million, $8 million, and $6 million at DPL • $2 million, $2 million, and $2 million at ACE (c) Includes revenues from off-system natural gas sales. (d) Includes operating revenues from affiliates in 2024, 2023, and 2022 respectively of: • $3 million, $2 million, and less than $1 million at PECO • $3 million, $3 million, and $8 million at BGE (e) Includes late payment charge revenues.

Accounts Receivable (All Regist

Accounts Receivable (All Registrants)	12 Months Ended
	Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
Accounts Receivable (All Registrants)	Accounts Receivable (All Registrants) Allowance for Credit Losses on Accounts Receivable The following tables present the rollforward of Allowance for Credit Losses on Customer Accounts Receivable. Year Ended December 31, 2024 Exelon ComEd PECO BGE PHI Pepco DPL ACE Balance at December 31, 2023 $ 317 $ 69 $ 95 $ 46 $ 107 $ 52 $ 19 $ 36 Plus: Current period provision for expected credit losses (a)(b) 248 78 72 37 61 39 10 12 Less: Write-offs (c)(d)(e) , net of recoveries (f) 159 38 34 27 60 32 12 16 Balance at December 31, 2024 $ 406 $ 109 $ 133 $ 56 $ 108 $ 59 $ 17 $ 32 Year Ended December 31, 2023 Exelon ComEd PECO BGE PHI Pepco DPL ACE Balance at December 31, 2022 $ 327 $ 59 $ 105 $ 54 $ 109 $ 47 $ 21 $ 41 Plus: Current period provision for expected credit losses 170 53 48 26 43 23 9 11 Less: Write-offs, net of recoveries 180 43 58 34 45 18 11 16 Balance at December 31, 2023 $ 317 $ 69 $ 95 $ 46 $ 107 $ 52 $ 19 $ 36 __________ (a) For PECO and ComEd, the increase is primarily a result of increased aging of receivables. (b) For BGE and Pepco, the increase is primarily a result of changes in customer risk profile and increased receivable balances. (c) For PECO, the decrease is primarily a result of decreased disconnection activities. (d) For BGE, the decrease is primarily a result of increased collection activities. (e) For Pepco, the increase is primarily attributable to unfavorable customer payment behavior. (f) Recoveries were not material to the Registrants. The following tables present the rollforward of Allowance for Credit Losses on Other Accounts Receivable. Year Ended December 31, 2024 Exelon ComEd PECO BGE PHI Pepco DPL ACE Balance at December 31, 2023 $ 82 $ 17 $ 8 $ 7 $ 50 $ 28 $ 8 $ 14 Plus: Current period provision (benefit) for expected credit losses (a)(b) 45 21 15 6 3 (1) 1 3 Less: Write-offs, net of recoveries (c) 20 4 5 7 4 — — 4 Balance at December 31, 2024 $ 107 $ 34 $ 18 $ 6 $ 49 $ 27 $ 9 $ 13 Year Ended December 31, 2023 Exelon ComEd PECO BGE PHI Pepco DPL ACE Balance at December 31, 2022 $ 82 $ 17 $ 9 $ 10 $ 46 $ 25 $ 7 $ 14 Plus: Current period provision for expected credit losses 21 5 4 5 7 3 1 3 Less: Write-offs, net of recoveries 21 5 5 8 3 — — 3 Balance at December 31, 2023 $ 82 $ 17 $ 8 $ 7 $ 50 $ 28 $ 8 $ 14 __________ (a) For PECO and ComEd, the increase is primarily a result of increased aging of receivables. (b) For Pepco, the decrease is primarily a result of decreased aging of receivables. (c) Recoveries were not material to the Registrants. Unbilled Customer Revenue The following table provides additional information about unbilled customer revenues recorded in the Registrants' Consolidated Balance Sheets as of December 31, 2024 and 2023. Unbilled customer revenues (a) Exelon ComEd PECO BGE PHI Pepco DPL ACE December 31, 2024 $ 1,114 $ 335 $ 254 $ 257 $ 268 $ 121 $ 76 $ 71 December 31, 2023 991 351 185 208 247 109 64 74 __________ (a) Unbilled customer revenues are classified in Customer accounts receivables, net in the Registrants' Consolidated Balance Sheets. Other Purchases of Customer and Other Accounts Receivables For the twelve months ended December 31, 2024 and 2023, the Utility Registrants were required, under separate legislation and regulations in Illinois, Pennsylvania, Maryland, District of Columbia, and New Jersey, to purchase certain receivables from alternative retail electric and, as applicable, natural gas suppliers that participated in the utilities' consolidated billing. The following table presents the total receivables purchased. Total receivables purchased Exelon ComEd PECO BGE PHI Pepco DPL ACE Year ended December 31, 2024 $ 4,128 $ 964 $ 1,111 $ 778 $ 1,275 $ 799 $ 252 $ 224 Year ended December 31, 2023 4,056 942 1,099 804 1,211 782 228 201

Property, Plant and Equipment (

Property, Plant and Equipment (All Registrants)	12 Months Ended
	Dec. 31, 2024
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment (All Registrants)	Property, Plant, and Equipment (All Registrants) The following tables present a summary of property, plant, and equipment by asset category at December 31, 2024 and 2023: Asset Category Exelon ComEd PECO BGE PHI Pepco DPL ACE December 31, 2024 Electric—transmission and distribution $ 79,283 $ 36,493 $ 12,234 $ 11,131 $ 21,130 $ 13,593 $ 6,086 $ 5,947 Gas—transportation and distribution 9,599 — 4,247 4,796 821 — 976 — Common—electric and gas 2,630 — 1,064 1,385 272 — 241 — Construction work in progress 4,306 1,219 813 779 1,472 1,002 275 187 Other property, plant, and equipment (a) 809 118 76 48 86 24 37 30 Total property, plant, and equipment 96,627 37,830 18,434 18,139 23,781 14,619 7,615 6,164 Less: accumulated depreciation 18,445 7,619 4,042 5,005 3,728 4,522 2,075 1,798 Property, plant, and equipment, net $ 78,182 $ 30,211 $ 14,392 $ 13,134 $ 20,053 $ 10,097 $ 5,540 $ 4,366 December 31, 2023 Electric—transmission and distribution $ 74,102 $ 34,834 $ 11,295 $ 10,537 $ 19,153 $ 12,429 $ 5,590 $ 5,659 Gas—transportation and distribution 8,818 — 3,905 4,428 748 — 905 — Common—electric and gas 2,510 — 1,083 1,275 243 — 211 — Construction work in progress 4,589 1,369 879 561 1,762 1,226 345 189 Other property, plant and equipment (a) 825 107 63 45 120 59 39 28 Total property, plant and equipment 90,844 36,310 17,225 16,846 22,026 13,714 7,090 5,876 Less: accumulated depreciation 17,251 7,222 4,097 4,744 3,175 4,284 1,925 1,684 Property, plant, and equipment, net $ 73,593 $ 29,088 $ 13,128 $ 12,102 $ 18,851 $ 9,430 $ 5,165 $ 4,192 __________ (a) Primarily composed of land and non-utility property. The following table presents the average service life for each asset category in number of years: Average Service Life (years) Asset Category Exelon ComEd PECO BGE PHI Pepco DPL ACE Electric - transmission and distribution 5-80 5-80 5-70 5-80 5-75 5-75 5-75 5-75 Gas - transportation and distribution 5-80 N/A 5-70 5-80 5-75 N/A 5-75 N/A Common - electric and gas 4-75 N/A 5-55 4-50 5-75 N/A 5-75 N/A Other property, plant, and equipment 4-61 29-50 50 20-50 10-43 10-33 10-43 10-43 The following table presents the annual depreciation rates for each asset category. Annual Depreciation Rates Exelon ComEd PECO BGE PHI Pepco DPL ACE December 31, 2024 Electric—transmission and distribution 2.83% 3.06% 2.30% 2.55% 2.87% 2.49% 2.99% 3.41% Gas—transportation and distribution 2.12% N/A 1.96% 2.42% 1.38% N/A 1.38% N/A Common—electric and gas 7.00% N/A 6.73% 7.81% 4.82% N/A 6.14% N/A December 31, 2023 Electric—transmission and distribution 2.90% 3.02% 2.30% 2.89% 3.03% 2.51% 3.29% 3.66% Gas—transportation and distribution 2.15% N/A 1.85% 2.56% 1.44% N/A 1.44% N/A Common—electric and gas 7.77% N/A 6.87% 8.68% 7.18% N/A 8.79% N/A December 31, 2022 Electric—transmission and distribution 2.87% 3.00% 2.29% 2.82% 2.96% 2.58% 3.08% 3.38% Gas—transportation and distribution 2.14% N/A 1.87% 2.53% 1.45% N/A 1.45% N/A Common—electric and gas 7.54% N/A 6.31% 8.20% 8.96% N/A 10.03% N/A AFUDC The following table summarizes credits to AFUDC by year: For the Years Ended December 31, 2024 2023 2022 Exelon $ 251 $ 256 $ 215 ComEd 75 72 54 PECO 48 46 42 BGE 39 25 29 PHI 89 113 90 Pepco 62 85 69 DPL 19 16 10 ACE 8 12 11 See Note 1 — Significant Accounting Policies for additional information regarding property, plant and equipment policies. See Note 16 — Debt and Credit Agreements for additional information regarding Exelon’s, ComEd’s, PECO's, Pepco's, DPL's, and ACE’s property, plant and equipment subject to mortgage liens.

Jointly Owned Electric Utility

Jointly Owned Electric Utility Plant (Exelon, PECO, DPL and ACE)	12 Months Ended
	Dec. 31, 2024
Public Utilities, Property, Plant and Equipment [Abstract]
Jointly Owned Electric Utility Plant (Exelon, PECO, PHI, DPL, and ACE)	Jointly Owned Electric Utility Plant (Exelon, PECO, PHI, DPL, and ACE) PECO's, DPL's, and ACE's material undivided ownership interests in transmission facilities jointly owned with non-affiliated utilities as of December 31, 2024 and 2023 were as follows: Transmission NJ/DE (a) Operator PSEG/DPL Ownership interest various Exelon’s share at December 31, 2024: Plant in service $ 105 Accumulated depreciation 57 Construction work in progress 4 Exelon’s share at December 31, 2023: Plant in service $ 103 Accumulated depreciation 56 Construction work in progress 2 __________ (a) PECO, DPL, and ACE own a 42.55%, 1%, and 13.9% share, respectively, in 151.3 miles of 500kV lines located in New Jersey and in the Salem substation. PECO, DPL, and ACE also own a 42.55%, 7.45%, and 7.45% share, respectively, in 2.5 miles of 500kV line located over the Delaware River. ACE also has a 21.78% share in a 500kV New Freedom Switching substation. Certain facilities are fully owned by Exelon through its 100% ownership in PECO, DPL, and ACE. These facilities are operated by Exelon Registrants. PECO's, DPL's, and ACE's material undivided ownership interests in Exelon owned facilities as of December 31, 2024 and 2023 were as follows: PECO PHI DPL ACE Ownership interest 56 % 44 % 27 % 17 % Registrant's share at December 31, 2024: Plant in service $ 84 $ 72 $ 44 $ 28 Accumulated depreciation 2 3 3 — Construction work in progress — — — — Registrant's share at December 31, 2023: Plant in service $ 7 $ 6 $ 4 $ 2 Accumulated depreciation — — — — Construction work in progress 70 58 36 22 PECO's, DPL's, and ACE's undivided ownership interests presented in the tables above are financed with their funds and all operations are accounted for as if such participating interests were wholly owned facilities. PECO's, DPL's, and ACE's share of direct expenses of the jointly owned plants are included in Operating and maintenance expenses in Exelon's, PECO's, PHI's, DPL's, and ACE's Consolidated Statements of Operations and Comprehensive Income.

Asset Retirement Obligations (A

Asset Retirement Obligations (All Registrants)	12 Months Ended
	Dec. 31, 2024
Asset Retirement Obligation Disclosure [Abstract]
Asset Retirement Obligations (All Registrants)	Asset Retirement Obligations (All Registrants) The Registrants have AROs primarily associated with the abatement and disposal of equipment and buildings contaminated with asbestos and PCBs. See Note 1 — Significant Accounting Policies for additional information on the Registrants’ accounting policy for AROs. The following table provides a rollforward of the AROs reflected in the Registrants’ Consolidated Balance Sheets from December 31, 2022 to December 31, 2024: Exelon ComEd PECO BGE PHI Pepco DPL ACE AROs at December 31, 2022 $ 271 $ 150 $ 28 $ 30 $ 59 $ 39 $ 13 $ 7 Revisions in estimates of cash flows (9) (3) (1) 1 (6) (4) (1) (1) Accretion expense (a) 11 6 1 1 3 2 1 — Payments (4) (3) (1) — — — — — AROs at December 31, 2023 $ 269 $ 150 $ 27 $ 32 $ 56 $ 37 $ 13 $ 6 Revisions in estimates of cash flows 26 12 1 3 10 10 — — Accretion expense (a) 11 7 1 1 2 2 — — Payments (2) (1) (1) — — — — — AROs at December 31, 2024 $ 304 $ 168 $ 28 $ 36 $ 68 $ 49 $ 13 $ 6 __________ (a) For ComEd, PECO, BGE, DPL and ACE, the majority of the accretion is recorded as an increase to a regulatory asset due to the associated regulatory treatment.

Leases (All Registrants)

Leases (All Registrants)	12 Months Ended
	Dec. 31, 2024
Leases [Abstract]
Leases (All Registrants)	Leases (All Registrants) Lessee The Registrants have operating and finance leases for which they are the lessees. The following tables outline the significant types of leases at each of the Registrants and other terms and conditions of the lease agreements as of December 31, 2024. Exelon, ComEd, PECO, and BGE did not have material finance leases in 2024, 2023, or 2022. Exelon ComEd PECO BGE PHI Pepco DPL ACE Real estate ● ● ● ● ● ● ● ● Vehicles and equipment ● ● ● ● ● ● (in years) Exelon ComEd PECO BGE PHI Pepco DPL ACE Remaining lease terms 1-81 1-28 1-9 1-81 1-7 1-7 1-7 1-7 Options to extend the term 3-30 N/A N/A 3-5 3-30 5 3-30 5 Options to terminate within 3-8 N/A N/A 3 N/A N/A N/A N/A The components of operating lease costs were as follows: Exelon ComEd PECO BGE PHI Pepco DPL ACE For the year ended December 31, 2024 Operating lease costs $ 57 $ — $ — $ 8 $ 41 $ 10 $ 10 $ 5 Variable lease costs 9 — — — 3 1 1 1 Total lease costs (a) $ 66 $ — $ — $ 8 $ 44 $ 11 $ 11 $ 6 For the year ended December 31, 2023 Operating lease costs $ 58 $ 1 $ — $ 5 $ 43 $ 11 $ 11 $ 6 Variable lease costs 9 1 — — 3 1 1 1 Total lease costs (a) $ 67 $ 2 $ — $ 5 $ 46 $ 12 $ 12 $ 7 For the year ended December 31, 2022 Operating lease costs $ 66 $ 2 $ — $ 15 $ 42 $ 10 $ 12 $ 6 Variable lease costs 8 1 — — 2 1 1 1 Total lease costs (a) $ 74 $ 3 $ — $ 15 $ 44 $ 11 $ 13 $ 7 __________ (a) Excludes sublease income recorded at Exelon, PHI, and DPL of $4 million for the years ended December 31, 2024, 2023, and 2022. The components of financing lease costs were as follows: PHI Pepco DPL ACE For the year ended December 31, 2024 Amortization of ROU asset $ 18 $ 7 $ 7 $ 4 Interest on lease liabilities 6 2 2 2 Total finance lease cost $ 24 $ 9 $ 9 $ 6 For the year ended December 31, 2023 Amortization of ROU asset $ 16 $ 6 $ 6 $ 4 Interest on lease liabilities 6 2 2 1 Total finance lease cost $ 22 $ 8 $ 8 $ 5 For the year ended December 31, 2022 Amortization of ROU asset $ 14 $ 5 $ 6 $ 3 Interest on lease liabilities 4 1 2 1 Total finance lease cost $ 18 $ 6 $ 8 $ 4 The following tables provide additional information regarding the presentation of operating and finance lease ROU assets and lease liabilities within the Registrants’ Consolidated Balance Sheets: Operating Leases Exelon ComEd PECO BGE PHI Pepco DPL ACE At December 31, 2024 Operating lease ROU assets Other deferred debits and other assets $ 224 $ — $ — $ 24 $ 127 $ 26 $ 27 $ 7 Operating lease liabilities Other current liabilities $ 38 $ — $ — $ 3 $ 30 $ 5 $ 6 $ 3 Other deferred credits and other liabilities 217 — — 16 116 25 32 5 Total operating lease liabilities $ 255 $ — $ — $ 19 $ 146 $ 30 $ 38 $ 8 At December 31, 2023 Operating lease ROU assets Other deferred debits and other assets $ 257 $ — $ 1 $ 29 $ 152 $ 31 $ 32 $ 8 Operating lease liabilities Other current liabilities $ 38 $ — $ — $ 4 $ 30 $ 5 $ 7 $ 3 Other deferred credits and other liabilities 248 — — 17 141 30 36 6 Total operating lease liabilities $ 286 $ — $ — $ 21 $ 171 $ 35 $ 43 $ 9 Finance Leases PHI Pepco DPL ACE At December 31, 2024 Finance lease ROU assets Plant, property and equipment, net $ 72 $ 26 $ 26 $ 20 Finance lease liabilities Long-term debt due within one year $ 17 $ 6 $ 7 $ 4 Long-term debt 58 21 21 16 Total finance lease liabilities $ 75 $ 27 $ 28 $ 20 At December 31, 2023 Finance lease ROU assets Plant, property and equipment, net $ 72 $ 25 $ 28 $ 18 Finance lease liabilities Long-term debt due within one year $ 15 $ 5 $ 6 $ 4 Long-term debt 59 21 23 15 Total finance lease liabilities $ 74 $ 26 $ 29 $ 19 Future minimum lease payments for operating and finance leases as of December 31, 2024 were as follows: Operating Leases Year Exelon ComEd PECO BGE PHI Pepco DPL ACE 2025 $ 49 $ — $ — $ 4 $ 36 $ 6 $ 8 $ 3 2026 44 — — 3 30 5 6 2 2027 42 — — 3 30 4 6 2 2028 42 — — 3 31 4 6 1 2029 25 — — 3 12 4 6 1 Remaining years 112 — — 21 29 12 16 — Total 314 — — 37 168 35 48 9 Interest 59 — — 18 22 5 10 1 Total operating lease liabilities $ 255 $ — $ — $ 19 $ 146 $ 30 $ 38 $ 8 Finance Leases Year PHI Pepco DPL ACE 2025 $ 19 $ 7 $ 7 $ 5 2026 19 7 7 5 2027 17 6 7 4 2028 12 5 5 3 2029 9 3 3 2 Remaining years 6 2 2 2 Total 82 30 31 21 Interest 7 3 3 1 Total finance lease liabilities $ 75 $ 27 $ 28 $ 20 The weighted average remaining lease terms, in years, for operating and finance leases were as follows: Operating Leases Exelon ComEd PECO BGE PHI Pepco DPL ACE At December 31, 2024 8.2 1.7 5.3 17.4 5.3 7.1 6.9 3.1 At December 31, 2023 8.8 1.8 5.0 17.1 6.1 7.6 7.4 3.2 Finance Leases PHI Pepco DPL ACE At December 31, 2024 4.4 4.4 4.2 4.5 At December 31, 2023 4.9 4.9 4.8 5.1 The weighted average discount rates for operating and finance leases were as follows: Operating Leases Exelon ComEd PECO BGE PHI Pepco DPL ACE At December 31, 2024 4.0 % 0.8 % 2.8 % 5.0 % 4.2 % 4.1 % 4.1 % 3.9 % At December 31, 2023 4.0 % 0.7 % 2.5 % 5.0 % 4.2 % 4.1 % 4.0 % 3.6 % Finance Leases PHI Pepco DPL ACE At December 31, 2024 3.4 % 3.5 % 3.1 % 3.5 % At December 31, 2023 2.7 % 2.7 % 2.6 % 2.8 % Cash paid for amounts included in the measurement of operating and finance lease liabilities were as follows: Operating Cash Flows from Operating Leases Exelon ComEd PECO BGE PHI Pepco DPL ACE For the year ended December 31, 2024 $ 48 $ — $ — $ 4 $ 35 $ 7 $ 7 $ 3 For the year ended December 31, 2023 65 2 — 15 37 7 9 3 For the year ended December 31, 2022 66 3 — 16 37 8 9 4 Financing Cash Flows from Finance Leases PHI Pepco DPL ACE For the year ended December 31, 2024 $ 17 $ 6 $ 7 $ 4 For the year ended December 31, 2023 15 5 6 4 For the year ended December 31, 2022 13 5 5 3 ROU assets obtained in exchange for operating and finance lease obligations were as follows: Operating Leases Exelon ComEd PECO BGE PHI Pepco DPL ACE For the year ended December 31, 2024 $ 8 $ — $ — $ 1 $ 5 $ 1 $ 2 $ 2 For the year ended December 31, 2023 35 — — 32 3 — 1 2 For the year ended December 31, 2022 46 — — — 2 — 1 1 Finance Leases PHI Pepco DPL ACE For the year ended December 31, 2024 $ 15 $ 7 $ 4 $ 4 For the year ended December 31, 2023 11 5 3 3 For the year ended December 31, 2022 14 4 7 3 Lessor The Registrants have operating leases for which they are the lessors. The following tables outline the significant types of leases at each of the Registrants and other terms and conditions of their lease agreements as of December 31, 2024. ACE did not have any operating leases for which they are the lessors for the years ended December 31, 2024, 2023, and 2022. Exelon ComEd PECO BGE PHI Pepco DPL Real estate ● ● ● ● ● ● ● (in years) Exelon ComEd PECO BGE PHI Pepco DPL Remaining lease terms 1-78 1-12 1-78 18 1-8 1 7-8 Options to extend the term 5-79 5-79 5-50 N/A N/A N/A N/A The components of lease income were as follows: Exelon ComEd PECO BGE PHI Pepco DPL For the year ended December 31, 2024 Operating lease income $ 4 $ — $ — $ — $ 4 $ — $ 3 Variable lease income 1 — — — 1 — 1 For the year ended December 31, 2023 Operating lease income $ 5 $ — $ — $ — $ 4 $ — $ 3 Variable lease income 1 — — — 1 — 1 For the year ended December 31, 2022 Operating lease income $ 4 $ — $ — $ — $ 4 $ — $ 3 Variable lease income 1 — — — 1 — 1 Future minimum lease payments to be recovered under operating leases as of December 31, 2024 were as follows: Year Exelon ComEd PECO BGE PHI Pepco DPL 2025 $ 6 $ 1 $ 1 $ — $ 4 $ — $ 4 2026 6 — 1 — 5 — 4 2027 6 — — — 5 — 4 2028 5 — — — 5 — 5 2029 4 — — — 4 — 4 Remaining years 17 — 3 1 13 — 13 Total $ 44 $ 1 $ 5 $ 1 $ 36 $ — $ 34
Leases (All Registrants)	Leases (All Registrants) Lessee The Registrants have operating and finance leases for which they are the lessees. The following tables outline the significant types of leases at each of the Registrants and other terms and conditions of the lease agreements as of December 31, 2024. Exelon, ComEd, PECO, and BGE did not have material finance leases in 2024, 2023, or 2022. Exelon ComEd PECO BGE PHI Pepco DPL ACE Real estate ● ● ● ● ● ● ● ● Vehicles and equipment ● ● ● ● ● ● (in years) Exelon ComEd PECO BGE PHI Pepco DPL ACE Remaining lease terms 1-81 1-28 1-9 1-81 1-7 1-7 1-7 1-7 Options to extend the term 3-30 N/A N/A 3-5 3-30 5 3-30 5 Options to terminate within 3-8 N/A N/A 3 N/A N/A N/A N/A The components of operating lease costs were as follows: Exelon ComEd PECO BGE PHI Pepco DPL ACE For the year ended December 31, 2024 Operating lease costs $ 57 $ — $ — $ 8 $ 41 $ 10 $ 10 $ 5 Variable lease costs 9 — — — 3 1 1 1 Total lease costs (a) $ 66 $ — $ — $ 8 $ 44 $ 11 $ 11 $ 6 For the year ended December 31, 2023 Operating lease costs $ 58 $ 1 $ — $ 5 $ 43 $ 11 $ 11 $ 6 Variable lease costs 9 1 — — 3 1 1 1 Total lease costs (a) $ 67 $ 2 $ — $ 5 $ 46 $ 12 $ 12 $ 7 For the year ended December 31, 2022 Operating lease costs $ 66 $ 2 $ — $ 15 $ 42 $ 10 $ 12 $ 6 Variable lease costs 8 1 — — 2 1 1 1 Total lease costs (a) $ 74 $ 3 $ — $ 15 $ 44 $ 11 $ 13 $ 7 __________ (a) Excludes sublease income recorded at Exelon, PHI, and DPL of $4 million for the years ended December 31, 2024, 2023, and 2022. The components of financing lease costs were as follows: PHI Pepco DPL ACE For the year ended December 31, 2024 Amortization of ROU asset $ 18 $ 7 $ 7 $ 4 Interest on lease liabilities 6 2 2 2 Total finance lease cost $ 24 $ 9 $ 9 $ 6 For the year ended December 31, 2023 Amortization of ROU asset $ 16 $ 6 $ 6 $ 4 Interest on lease liabilities 6 2 2 1 Total finance lease cost $ 22 $ 8 $ 8 $ 5 For the year ended December 31, 2022 Amortization of ROU asset $ 14 $ 5 $ 6 $ 3 Interest on lease liabilities 4 1 2 1 Total finance lease cost $ 18 $ 6 $ 8 $ 4 The following tables provide additional information regarding the presentation of operating and finance lease ROU assets and lease liabilities within the Registrants’ Consolidated Balance Sheets: Operating Leases Exelon ComEd PECO BGE PHI Pepco DPL ACE At December 31, 2024 Operating lease ROU assets Other deferred debits and other assets $ 224 $ — $ — $ 24 $ 127 $ 26 $ 27 $ 7 Operating lease liabilities Other current liabilities $ 38 $ — $ — $ 3 $ 30 $ 5 $ 6 $ 3 Other deferred credits and other liabilities 217 — — 16 116 25 32 5 Total operating lease liabilities $ 255 $ — $ — $ 19 $ 146 $ 30 $ 38 $ 8 At December 31, 2023 Operating lease ROU assets Other deferred debits and other assets $ 257 $ — $ 1 $ 29 $ 152 $ 31 $ 32 $ 8 Operating lease liabilities Other current liabilities $ 38 $ — $ — $ 4 $ 30 $ 5 $ 7 $ 3 Other deferred credits and other liabilities 248 — — 17 141 30 36 6 Total operating lease liabilities $ 286 $ — $ — $ 21 $ 171 $ 35 $ 43 $ 9 Finance Leases PHI Pepco DPL ACE At December 31, 2024 Finance lease ROU assets Plant, property and equipment, net $ 72 $ 26 $ 26 $ 20 Finance lease liabilities Long-term debt due within one year $ 17 $ 6 $ 7 $ 4 Long-term debt 58 21 21 16 Total finance lease liabilities $ 75 $ 27 $ 28 $ 20 At December 31, 2023 Finance lease ROU assets Plant, property and equipment, net $ 72 $ 25 $ 28 $ 18 Finance lease liabilities Long-term debt due within one year $ 15 $ 5 $ 6 $ 4 Long-term debt 59 21 23 15 Total finance lease liabilities $ 74 $ 26 $ 29 $ 19 Future minimum lease payments for operating and finance leases as of December 31, 2024 were as follows: Operating Leases Year Exelon ComEd PECO BGE PHI Pepco DPL ACE 2025 $ 49 $ — $ — $ 4 $ 36 $ 6 $ 8 $ 3 2026 44 — — 3 30 5 6 2 2027 42 — — 3 30 4 6 2 2028 42 — — 3 31 4 6 1 2029 25 — — 3 12 4 6 1 Remaining years 112 — — 21 29 12 16 — Total 314 — — 37 168 35 48 9 Interest 59 — — 18 22 5 10 1 Total operating lease liabilities $ 255 $ — $ — $ 19 $ 146 $ 30 $ 38 $ 8 Finance Leases Year PHI Pepco DPL ACE 2025 $ 19 $ 7 $ 7 $ 5 2026 19 7 7 5 2027 17 6 7 4 2028 12 5 5 3 2029 9 3 3 2 Remaining years 6 2 2 2 Total 82 30 31 21 Interest 7 3 3 1 Total finance lease liabilities $ 75 $ 27 $ 28 $ 20 The weighted average remaining lease terms, in years, for operating and finance leases were as follows: Operating Leases Exelon ComEd PECO BGE PHI Pepco DPL ACE At December 31, 2024 8.2 1.7 5.3 17.4 5.3 7.1 6.9 3.1 At December 31, 2023 8.8 1.8 5.0 17.1 6.1 7.6 7.4 3.2 Finance Leases PHI Pepco DPL ACE At December 31, 2024 4.4 4.4 4.2 4.5 At December 31, 2023 4.9 4.9 4.8 5.1 The weighted average discount rates for operating and finance leases were as follows: Operating Leases Exelon ComEd PECO BGE PHI Pepco DPL ACE At December 31, 2024 4.0 % 0.8 % 2.8 % 5.0 % 4.2 % 4.1 % 4.1 % 3.9 % At December 31, 2023 4.0 % 0.7 % 2.5 % 5.0 % 4.2 % 4.1 % 4.0 % 3.6 % Finance Leases PHI Pepco DPL ACE At December 31, 2024 3.4 % 3.5 % 3.1 % 3.5 % At December 31, 2023 2.7 % 2.7 % 2.6 % 2.8 % Cash paid for amounts included in the measurement of operating and finance lease liabilities were as follows: Operating Cash Flows from Operating Leases Exelon ComEd PECO BGE PHI Pepco DPL ACE For the year ended December 31, 2024 $ 48 $ — $ — $ 4 $ 35 $ 7 $ 7 $ 3 For the year ended December 31, 2023 65 2 — 15 37 7 9 3 For the year ended December 31, 2022 66 3 — 16 37 8 9 4 Financing Cash Flows from Finance Leases PHI Pepco DPL ACE For the year ended December 31, 2024 $ 17 $ 6 $ 7 $ 4 For the year ended December 31, 2023 15 5 6 4 For the year ended December 31, 2022 13 5 5 3 ROU assets obtained in exchange for operating and finance lease obligations were as follows: Operating Leases Exelon ComEd PECO BGE PHI Pepco DPL ACE For the year ended December 31, 2024 $ 8 $ — $ — $ 1 $ 5 $ 1 $ 2 $ 2 For the year ended December 31, 2023 35 — — 32 3 — 1 2 For the year ended December 31, 2022 46 — — — 2 — 1 1 Finance Leases PHI Pepco DPL ACE For the year ended December 31, 2024 $ 15 $ 7 $ 4 $ 4 For the year ended December 31, 2023 11 5 3 3 For the year ended December 31, 2022 14 4 7 3 Lessor The Registrants have operating leases for which they are the lessors. The following tables outline the significant types of leases at each of the Registrants and other terms and conditions of their lease agreements as of December 31, 2024. ACE did not have any operating leases for which they are the lessors for the years ended December 31, 2024, 2023, and 2022. Exelon ComEd PECO BGE PHI Pepco DPL Real estate ● ● ● ● ● ● ● (in years) Exelon ComEd PECO BGE PHI Pepco DPL Remaining lease terms 1-78 1-12 1-78 18 1-8 1 7-8 Options to extend the term 5-79 5-79 5-50 N/A N/A N/A N/A The components of lease income were as follows: Exelon ComEd PECO BGE PHI Pepco DPL For the year ended December 31, 2024 Operating lease income $ 4 $ — $ — $ — $ 4 $ — $ 3 Variable lease income 1 — — — 1 — 1 For the year ended December 31, 2023 Operating lease income $ 5 $ — $ — $ — $ 4 $ — $ 3 Variable lease income 1 — — — 1 — 1 For the year ended December 31, 2022 Operating lease income $ 4 $ — $ — $ — $ 4 $ — $ 3 Variable lease income 1 — — — 1 — 1 Future minimum lease payments to be recovered under operating leases as of December 31, 2024 were as follows: Year Exelon ComEd PECO BGE PHI Pepco DPL 2025 $ 6 $ 1 $ 1 $ — $ 4 $ — $ 4 2026 6 — 1 — 5 — 4 2027 6 — — — 5 — 4 2028 5 — — — 5 — 5 2029 4 — — — 4 — 4 Remaining years 17 — 3 1 13 — 13 Total $ 44 $ 1 $ 5 $ 1 $ 36 $ — $ 34

Asset Impairments (Exelon and B

Asset Impairments (Exelon and BGE)	12 Months Ended
	Dec. 31, 2024
Impairment or Disposal of Tangible Assets Disclosure [Abstract]
Asset Impairments (Exelon and BGE)	Asset Impairments (Exelon and BGE)In the third quarter of 2022, a review of the impacts of COVID-19 on office use resulted in plans to cease the renovation and dispose of an office building at BGE before the asset was placed into service. BGE determined that the carrying value was not recoverable and that its fair value was less than carrying value. As a result, in 2022, a pre-tax impairment charge of $48 million was recorded in Operating and maintenance expense in Exelon’s and BGE’s Consolidated Statements of Operations and Comprehensive Income. The fair value used in the analysis was based on an estimate of an expected sales price.

Intangible Assets

Intangible Assets	12 Months Ended
	Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets	Intangible Assets Goodwill (Exelon, ComEd, PHI, Pepco, DPL, and ACE) The following table presents the gross amount, accumulated impairment loss, and carrying amount of Goodwill at Exelon, ComEd, and PHI at December 31, 2024 and 2023. There were no additions or impairments during the years ended December 31, 2024, 2023, and 2022. Gross Amount Accumulated Impairment Loss Carrying Amount Exelon $ 8,613 $ 1,983 $ 6,630 ComEd (a) 4,608 1,983 2,625 PHI (b) 4,005 — 4,005 __________ (a) Reflects goodwill recorded in 2000 from the PECO/Unicom merger (predecessor parent company of ComEd). (b) Reflects goodwill recorded in 2016 from the PHI merger. Goodwill is not amortized, but is subject to an assessment for impairment at least annually, or more frequently if events occur or circumstances change that would more likely than not reduce the fair value of ComEd's and PHI's reporting units below their carrying amounts. A reporting unit is an operating segment or one level below an operating segment (known as a component) and is the level at which goodwill is assessed for impairment. A component of an operating segment is a reporting unit if the component constitutes a business for which discrete financial information is available and its operating results are regularly reviewed by segment management. ComEd has a single operating segment. PHI's operating segments are Pepco, DPL, and ACE. See Note 5 — Segment Information for additional information. There is no level below these operating segments for which operating results are regularly reviewed by segment management. Therefore, the ComEd, Pepco, DPL, and ACE operating segments are also considered reporting units for goodwill impairment assessment purposes. Exelon's and ComEd's $2.6 billion of goodwill has been assigned entirely to the ComEd reporting unit, while Exelon's and PHI's $4.0 billion of goodwill has been assigned to the Pepco, DPL, and ACE reporting units in the amounts of $2.1 billion, $1.4 billion, and $0.5 billion, respectively. Entities assessing goodwill for impairment have the option of first performing a qualitative assessment to determine whether a quantitative assessment is necessary. As part of the qualitative assessments, Exelon, ComEd, and PHI evaluate, among other things, management's best estimate of projected operating and capital cash flows for their businesses, outcomes of recent regulatory proceedings, changes in certain market conditions, including the discount rate and regulated utility peer EBITDA multiples, and the passing margin from their last quantitative assessments performed. If an entity bypasses the qualitative assessment, a quantitative, fair value-based assessment is performed, which compares the fair value of the reporting unit to its carrying amount, including goodwill. If the carrying amount of the reporting unit exceeds its fair value, the entity recognizes an impairment charge, which is limited to the amount of goodwill allocated to the reporting unit. Application of the goodwill impairment assessment requires management judgment, including the identification of reporting units and determining the fair value of the reporting unit, which management estimates using a weighted combination of a discounted cash flow analysis and a market multiples analysis. Significant assumptions used in these fair value analyses include discount and growth rates, utility sector market performance and transactions, projected operating and capital cash flows for ComEd's, Pepco's, DPL's, and ACE's businesses, and the fair value of debt. 2024 and 2023 Goodwill Impairment Assessment. ComEd and PHI qualitatively determined that it was more likely than not that the fair values of their reporting units exceeded their carrying values and, therefore, did not perform quantitative assessments as of November 1, 2024 and 2023. The last quantitative assessments performed for PHI was as of November 1, 2018. On December 14, 2023, due to the issuance of the ICC's final order rejecting ComEd’s proposed Grid Plan and establishing retail rates for 2024-2027 as further discussed in Note 3 — Regulatory Matters, Exelon’s stock price decreased approximately 10% triggering an interim quantitative assessment for potential goodwill impairment at ComEd. ComEd performed a quantitative assessment as of December 31, 2023, comparing the estimated fair value of ComEd to its carrying value, and determined there was no indication of goodwill impairment. While the annual and interim assessments indicated no impairments, certain assumptions used to estimate reporting unit fair values are highly sensitive to changes. Adverse regulatory actions or changes in significant assumptions could potentially result in future impairments of Exelon's, ComEd's, and PHI’s goodwill, which could be material. Other Intangible Assets and Liabilities (Exelon and PHI) Exelon’s other intangible assets, included in Other current assets and Other deferred debits and other assets in the Consolidated Balance Sheets, consisted of the following at December 31, 2024 and 2023. Exelon's and PHI's other intangible liabilities, included in current and noncurrent Unamortized energy contract liabilities in their Consolidated Balance Sheets, consisted of the following at December 31, 2024 and 2023. The intangible assets and liabilities shown below are amortized on a straight-line basis, except for unamortized energy contracts which are amortized in relation to the expected realization of the underlying cash flows: December 31, 2024 December 31, 2023 Gross Accumulated Amortization Net Gross Accumulated Amortization Net Exelon Unamortized Energy Contracts $ (1,515) $ 1,489 $ (26) $ (1,515) $ 1,480 $ (35) Software License 81 (78) 3 81 (70) 11 Exelon Total $ (1,434) $ 1,411 $ (23) $ (1,434) $ 1,410 $ (24) PHI Unamortized Energy Contracts $ (1,515) $ 1,489 $ (26) $ (1,515) $ 1,480 $ (35) The following table summarizes the amortization expense related to intangible assets and liabilities for each of the years ended December 31, 2024, 2023, and 2022: For the Years Ended December 31, Exelon (a) PHI (a) 2024 $ (1) $ (9) 2023 (1) (10) 2022 (b) (182) (190) __________ (a) For PHI unamortized energy contracts, the amortization of the fair value adjustment amounts and the corresponding offsetting regulatory asset amounts are amortized through Purchased power and fuel expense in their Consolidated Statements of Operations and Comprehensive Income resulting in no effect to net income. (b) On March 23, 2022, the NJBPU approved a petition by ACE to terminate the provisions in its PPAs. As such, the contract was fully amortized during the year ended December 31, 2022. See Note 3 - Regulatory Matters for additional information.

Income Taxes (All Registrants)

Income Taxes (All Registrants)	12 Months Ended
	Dec. 31, 2024
Income Tax Disclosure [Abstract]
Income Taxes (All Registrants)	Income Taxes (All Registrants) Components of Income Tax Expense or Benefit Income tax expense (benefit) from continuing operations is comprised of the following components: For the Year Ended December 31, 2024 Exelon ComEd PECO BGE PHI Pepco DPL ACE Included in operations: Federal Current $ 42 $ 76 $ 51 $ 45 $ 97 $ 50 $ 29 $ 16 Deferred (27) (76) (46) (42) 21 3 3 20 Investment tax credit amortization (2) (1) — — (1) — — — State Current 37 60 — — 19 17 4 — Deferred 157 57 (17) 46 53 20 13 19 Total $ 207 $ 116 $ (12) $ 49 $ 189 $ 90 $ 49 $ 55 For the Year Ended December 31, 2023 Exelon ComEd PECO BGE PHI Pepco DPL ACE Included in operations: Federal Current $ 51 $ 130 $ 63 $ 67 $ 71 $ 54 $ 25 $ 9 Deferred 193 45 (36) 16 (8) (28) (6) 13 Investment tax credit amortization (2) (1) — — (1) — — — State Current 4 (13) — — 15 12 6 — Deferred 128 153 (7) 50 39 13 10 14 Total $ 374 $ 314 $ 20 $ 133 $ 116 $ 51 $ 35 $ 36 For the Year Ended December 31, 2022 Exelon ComEd PECO BGE PHI Pepco DPL ACE Included in operations: Federal Current $ (24) $ 29 $ 13 $ (1) $ 16 $ 9 $ (2) $ 6 Deferred 106 117 18 (3) (23) (2) 2 (15) Investment tax credit amortization (3) (1) — — (1) — — — State Current (13) (6) (4) — 2 — — — Deferred 283 125 52 12 15 (16) 14 12 Total $ 349 $ 264 $ 79 $ 8 $ 9 $ (9) $ 14 $ 3 Rate Reconciliation The effective income tax rate from continuing operations varies from the U.S. federal statutory rate principally due to the following: For the Year Ended December 31, 2024 (a) Exelon ComEd (b) PECO (c) BGE (b) PHI Pepco DPL ACE U.S. federal statutory rate 21.0 % 21.0 % 21.0 % 21.0 % 21.0 % 21.0 % 21.0 % 21.0 % Increase (decrease) due to: State income taxes, net of Federal income tax benefit 5.7 7.8 (2.5) 6.4 6.1 6.1 5.2 7.3 Plant basis differences (4.5) (0.7) (17.8) (1.5) (0.8) (1.0) (1.1) 0.3 Excess deferred tax amortization (13.9) (17.3) (2.9) (17.1) (5.5) (6.8) (5.6) (2.0) Amortization of investment tax credit, including deferred taxes on basis differences (0.1) (0.1) — — (0.1) — (0.1) (0.1) Tax credits (0.6) (0.8) — (0.5) (0.5) (0.4) (0.4) (0.4) Other 0.2 (0.1) — 0.2 0.1 (0.1) — 0.1 Effective income tax rate 7.8 % 9.8 % (2.2) % 8.5 % 20.3 % 18.8 % 19.0 % 26.2 % For the Year Ended December 31, 2023 (a) Exelon ComEd PECO (c) BGE PHI Pepco DPL ACE U.S. federal statutory rate 21.0 % 21.0 % 21.0 % 21.0 % 21.0 % 21.0 % 21.0 % 21.0 % Increase (decrease) due to: State income taxes, net of Federal income tax benefit (d) 3.9 7.9 (1.0) 6.4 5.9 5.5 6.1 7.1 Plant basis differences (3.9) (0.5) (14.4) (0.9) (1.4) (2.2) (0.7) (0.4) Excess deferred tax amortization (6.6) (5.5) (2.4) (4.6) (8.6) (9.6) (9.4) (4.2) Amortization of investment tax credit, including deferred taxes on basis differences (0.1) (0.1) — — (0.1) — (0.1) (0.2) Tax credits (0.6) (0.6) — (0.6) (0.6) (0.7) (0.4) (0.5) Other 0.1 0.2 0.2 0.2 0.2 0.3 — 0.3 Effective income tax rate 13.8 % 22.4 % 3.4 % 21.5 % 16.4 % 14.3 % 16.5 % 23.1 % For the Year Ended December 31, 2022 (a) Exelon ComEd PECO (e) BGE (e) PHI (e) Pepco (e) DPL (e) ACE (e) U.S. federal statutory rate 21.0 % 21.0 % 21.0 % 21.0 % 21.0 % 21.0 % 21.0 % 21.0 % Increase (decrease) due to: State income taxes, net of federal income tax benefit (f) 8.8 8.0 5.8 2.6 2.1 (4.1) 6.5 6.9 Plant basis differences (4.1) (0.6) (11.9) (1.0) (1.7) (2.7) (0.7) (0.7) Excess deferred tax amortization (11.8) (5.6) (3.0) (19.8) (19.5) (16.8) (18.4) (24.5) Amortization of investment tax credit, including deferred taxes on basis differences (0.1) (0.1) — (0.1) (0.1) — (0.2) (0.2) Tax credits (g) 0.1 (0.3) — (0.7) (0.7) (0.7) (0.6) (0.5) Other (h) 0.6 — 0.2 0.1 0.4 0.3 0.1 — Effective income tax rate 14.5 % 22.4 % 12.1 % 2.1 % 1.5 % (3.0) % 7.7 % 2.0 % __________ (a) Positive percentages represent income tax expense. Negative percentages represent income tax benefit. (b) For ComEd, the lower effective tax rate is primarily due to CEJA which resulted in the acceleration of certain income tax benefits. For BGE, the lower effective tax rate is primarily due to the Maryland multi-year plan which resulted in the acceleration of certain income tax benefits. (c) For PECO, the lower effective tax rate is primarily related to plant basis differences attributable to tax repair deductions. (d) For Exelon, the lower state income taxes, net of federal income tax benefit, is primarily due to the long-term marginal state income tax rate change of $54 million. (e) For PECO, the lower effective tax rate is primarily related to plant basis differences attributable to tax repair deductions partially offset by higher state income taxes, net of federal income tax benefit, related to a one-time expense of $38 million attributable to the change in the Pennsylvania corporate income tax rate. For BGE, PHI, Pepco, DPL, and ACE, the lower effective tax rate is primarily related to the acceleration of certain income tax benefits due to transmission and distribution rate case settlements. (f) For Exelon, the higher state income taxes, net of federal income tax benefit, is primarily due to the long-term marginal state income tax rate change of $67 million and the recognition of a valuation allowance of $40 million against the net deferred tax asset position for certain standalone state filing jurisdictions, partially offset by a one-time impact associated with a state tax benefit of $43 million and indemnification adjustments pursuant to the Tax Matters Agreement of $11 million as a result of the separation. For PECO, the higher state income taxes, net of federal income tax benefit, related to a one-time expense of $38 million attributable to the change in the Pennsylvania corporate income tax rate. (g) For Exelon, reflects the income tax expense related to the write-off of federal tax credits subject to recapture of $15 million as a result of the separation. (h) For Exelon, reflects the nondeductible transaction costs of approximately $12 million arising as part of the separation and indemnification adjustments pursuant to the Tax Matters Agreement of $9 million. Tax Differences and Carryforwards The tax effects of temporary differences and carryforwards, which give rise to significant portions of the deferred tax assets (liabilities), at December 31, 2024 and 2023 are presented below: At December 31, 2024 Exelon ComEd PECO BGE PHI Pepco DPL ACE Plant basis differences $ (13,150) $ (5,069) $ (2,446) $ (2,232) $ (3,371) $ (1,512) $ (975) $ (881) Accrual based contracts 19 — — — 6 — — — Derivatives and other financial instruments 21 36 — — 1 — — — Deferred pension and postretirement obligation 512 (339) (39) (24) (68) (64) (32) — Deferred debt refinancing costs 108 (4) — (2) 98 (3) (1) (1) Regulatory assets and liabilities (1,665) (515) (254) (37) (96) (16) 33 (18) Tax loss carryforward, net of valuation allowances 283 — 63 78 68 — 16 51 Tax credit carryforward 142 — — — — — — — Corporate Alternative Minimum Tax 369 47 166 95 2 2 4 8 Investment in partnerships (27) — — — — — — — Other, net 612 249 77 24 180 85 10 27 Deferred income tax liabilities (net) (12,776) (5,595) (2,433) (2,098) (3,180) (1,508) (945) (814) Unamortized investment tax credits (10) (6) — (1) (3) (1) (1) (2) Total deferred income tax liabilities (net) and unamortized investment tax credits $ (12,786) $ (5,601) $ (2,433) $ (2,099) $ (3,183) $ (1,509) $ (946) $ (816) At December 31, 2023 Exelon ComEd PECO BGE PHI Pepco DPL ACE Plant basis differences $ (12,631) $ (4,993) $ (2,264) $ (2,064) $ (3,262) $ (1,454) $ (947) $ (850) Accrual based contracts 8 — — — 8 — — — Derivatives and other financial instruments 46 37 — — 2 — — — Deferred pension and postretirement obligation 524 (299) (36) (26) (78) (70) (35) (2) Deferred debt refinancing costs 115 (5) — (2) 104 (3) (2) (1) Regulatory assets and liabilities (1,429) (405) (208) (4) (52) 9 45 (4) Tax loss carryforward, net of valuation allowances 295 — 47 77 72 — 18 52 Tax credit carryforward 281 — — — — — — — Corporate Alternative Minimum Tax 264 118 82 55 — — 2 11 Investment in partnerships (28) — — — — — — — Other, net 619 227 58 21 186 88 16 25 Deferred income tax liabilities (net) (11,936) (5,320) (2,321) (1,943) (3,020) (1,430) (903) (769) Unamortized investment tax credits (13) (7) — (2) (4) (1) (1) (2) Total deferred income tax liabilities (net) and $ (11,949) $ (5,327) $ (2,321) $ (1,945) $ (3,024) $ (1,431) $ (904) $ (771) The following table provides Exelon’s, ComEd's, PECO’s, BGE’s, PHI’s, Pepco’s, DPL’s, and ACE’s carryforwards, of which the state related items are presented on a post-apportioned basis, as well as, any corresponding valuation allowances at December 31, 2024. Exelon ComEd PECO BGE PHI Pepco DPL ACE Federal Federal general business credits carryforwards (a) 142 — — — — — — — Corporate Alternative Minimum Tax credit carryforward (b) 369 47 166 95 2 2 4 8 State State net operating loss carryforwards 6,349 — 1,711 1,204 1,392 — 670 722 Deferred taxes on state tax attributes (net of federal taxes) 369 — 67 78 97 — 45 51 Valuation allowance on state tax attributes (net of federal taxes) (c) 86 — 4 — 29 — 29 — Year in which net operating loss or credit carryforwards will begin to expire (d) 2035 N/A 2031 2033 N/A N/A 2033 2031 __________ (a) For Exelon, the federal general business credit carryforward will begin expiring in 2035. (b) For Exelon, ComEd, PECO, BGE and ACE, the Corporate Alternative Minimum Tax credit carryforward has an indefinite carryforward period. (c) For Exelon, a full valuation allowance has been recorded against certain separate company state net operating loss carryforwards that are expected to expire before realization. For PECO, a valuation allowance has been recorded against certain Pennsylvania net operating losses that are expected to expire before realization. For DPL, a full valuation allowance has been recorded against Delaware net operating losses carryforwards due to a change in Delaware tax law that restricts the ability for corporate taxpayers to monetize net operating losses. (d) A portion of Exelon's, BGE's, and DPL's Maryland state net operating loss carryforward have an indefinite carryforward period. Tabular Reconciliation of Unrecognized Tax Benefits The following table presents changes in unrecognized tax benefits, for Exelon, PHI, and ACE. ComEd's, PECO's, BGE's, Pepco's, and DPL's amounts are not material. Exelon (a) PHI ACE Balance at January 1, 2022 $ 143 $ 56 $ 16 Change to positions that only affect timing (1) 1 1 Increases based on tax positions related to 2022 3 2 — Increases based on tax positions prior to 2022 3 — — Decreases based on tax positions prior to 2022 — — — Balance at December 31, 2022 $ 148 $ 59 $ 17 Change to positions that only affect timing (57) (9) (2) Increases based on tax positions related to 2023 3 1 — Increases based on tax positions prior to 2023 1 — — Decreases based on tax positions prior to 2023 (1) — — Balance at December 31, 2023 $ 94 $ 51 $ 15 Change to positions that only affect timing 10 10 — Increases based on tax positions related to 2024 4 1 — Increases based on tax positions prior to 2024 2 — — Decreases based on tax positions prior to 2024 (14) (14) (14) Balance at December 31, 2024 $ 96 $ 48 $ 1 ______ (a) At December 31, 2024 and 2023, Exelon recorded a receivable of $31 million and $31 million, respectively, in noncurrent Other assets in the Consolidated Balance Sheet for Constellation’s share of unrecognized tax benefits for periods prior to the separation. Recognition of Unrecognized Tax Benefits The following table presents Exelon's unrecognized tax benefits that, if recognized, would decrease the effe ctive tax rate. The Utility Registrants' amounts are not material. Exelon December 31, 2024 $ 69 December 31, 2023 71 December 31, 2022 90 Total Amounts of Interest and Penalties Recognized The following table represents the net interest and penalties receivable (payable) related to tax positions reflected in Exelon's Consolidated Balance Sheets. The Utility Registrants' amounts are not material. Net interest and penalties receivable at Exelon December 31, 2024 (a) $ 76 December 31, 2023 (b) 62 __________ (a) At December 31, 2024, Exelon classified $27 million and $49 million of the interest receivable as current and noncurrent, respectively, based on the expected timing for settlement in cash. At December 31, 2024, Exelon recorded a receivable of $9 million in noncurrent Other assets in the Consolidated Balance Sheet for Constellation's share of net interest for periods prior to the separation. (b) At December 31, 2023, Exelon classified $21 million and $41 million of the interest receivable as current and noncurrent, respectively, based on the expected timing for settlement in cash. At December 31, 2023, Exelon recorded a receivable of $5 million in noncurrent Other assets in the Consolidated Balance Sheet for Constellation's share of net interest for periods prior to the separation. The Registrants did not record material interest and penalty expense related to tax positions reflected in their Consolidated Balance Sheets. Interest expense and penalty expense are recorded in Interest expense, net and Other, net, respect ively, in Other income and deductions in the Registrants Consolidated Statements of Operations and Comprehensive Income. Description of Tax Years Open to Assessment by Major Jurisdiction Major Jurisdiction Open Years Registrants Impacted Federal consolidated income tax returns (a) 2010-2023 All Registrants Delaware separate corporate income tax returns Same as federal DPL District of Columbia combined corporate income tax returns 2021-2023 Exelon, PHI, Pepco Illinois unitary corporate income tax returns 2012-2023 Exelon, ComEd Maryland separate company corporate net income tax returns Same as federal BGE, Pepco, DPL New Jersey combined corporate income tax returns 2020-2023 Exelon New Jersey separate corporate income tax returns 2020-2023 ACE New York combined corporate income tax returns 2019-2023 Exelon Pennsylvania separate corporate income tax returns 2021-2023 Exelon Pennsylvania separate corporate income tax returns 2021-2023 PECO __________ (a) Certain registrants are only open to assessment for tax years since joining the Exelon federal consolidated group; BGE beginning in 2012 and PHI, Pepco, DPL, and ACE beginning in 2016. Other Tax Matters Separation (Exelon) In the first quarter of 2022, in connection with the separation, Exelon recorded an income tax expense related to continuing operations of $148 million primarily due to the long-term marginal state income tax rate change of $54 million discussed further below, the recognition of valuation allowances of approximately $40 million against the net deferred tax assets positions for certain standalone state filing jurisdictions, the write-off of federal and state tax credits subject to recapture of $17 million, and nondeductible transaction costs for federal and state taxes of $24 million. Tax Matters Agreement (Exelon) In connection with the separation, Exelon entered into a TMA with Constellation. The TMA governs the respective rights, responsibilities, and obligations between Exelon and Constellation after the separation with respect to tax liabilities, refunds and attributes for open tax years that Constellation was part of Exelon’s consolidated group for U.S. federal, state, and local tax purposes. Indemnification for Taxes. As a former subsidiary of Exelon, Constellation has joint and several liability with Exelon to the IRS and certain state jurisdictions relating to the taxable periods prior to the separation. The TMA specifies that Constellation is liable for their share of taxes required to be paid by Exelon with respect to taxable periods prior to the separation to the extent Constellation would have been responsible for such taxes under the existing Exelon tax sharing agreement. In 2024, Exelon remitted $11 million of payments to Constellation. At December 31, 2024, there is no balance due to or from Constellation. Tax Refunds. The TMA specifies that Constellation is entitled to their share of any future tax refunds claimed by Exelon with respect to taxable periods prior to the separation to the extent that Constellation would have received such tax refunds under the existing Exelon tax sharing agreement. At December 31, 2024, there is no balance due to or from Constellation. Tax Attributes . At the date of separation certain tax attributes, primarily pre-closing tax credit carryforwards, that were generated by Constellation were required by law to be allocated to Exelon. The TMA also provides that Exelon will reimburse Constellation when those allocated tax attribute carryforwards are utilized. In 2024, Exelon remitted $174 million of payments to Constellation for the utilization of pre-closing tax credit carryforwards. At December 31, 2024, Exelon recorded a payable of $141 million and $198 million in Other current liabilities and Other deferred credits and other liabilities, respectively, in the Consolidated Balance Sheet for tax attribute carryforwards that are expected to be utilized and reimbursed to Constellation. Corporate Alternative Minimum Tax (All Registrants) On August 16, 2022, the IRA was signed into law and implemented a new corporate alternative minimum tax (CAMT) that imposes a 15.0% tax on modified GAAP net income. Corporations are entitled to a tax credit (minimum tax credit) to the extent the CAMT liability exceeds the regular tax liability. This amount can be carried forward indefinitely and used in future years when regular tax exceeds the CAMT. Beginning in 2023, based on the existing statue, Exelon and each of the Utility Registrants will be subject to and will report the CAMT on a separate Registrant basis in the Consolidated Statements of Operations and Comprehensive Income and the Consolidated Balance Sheets. The deferred tax asset related to the minimum tax credit carryforward will be realized to the extent Exelon’s consolidated deferred tax liabilities exceed the minimum tax credit carryforward. Exelon’s deferred tax liabilities are expected to exceed the minimum tax credit carryforward for the foreseeable future and thus no valuation allowance is required. On September 12, 2024, the U.S. Treasury issued proposed regulations providing further guidance addressing the implementation of CAMT. The proposed regulations are consistent with Exelon’s prior interpretation and therefore there are no financial statement impacts. Exelon will continue to monitor and assess the potential financial statement impacts of final regulations or other guidance when issued. Long-Term Marginal State Income Tax Rate (All Registrants) Quarterly, Exelon reviews and updates its marginal state income tax rates for material changes in state tax laws and state apportionment. The Registrants remeasure their existing deferred income tax balances to reflect the changes in marginal rates, which results in either an increase or a decrease to their net deferred income tax liability balances. Utility Registrants record corresponding regulatory liabilities or assets to the extent such amounts are probable of settlement or recovery through customer rates and an adjustment to income tax expense for all other amounts. In the third quarter of 2023, Exelon updated its marginal state income tax rates for changes in state apportionment. The changes in marginal rates in the third quarter resulted in a decrease of $54 million to the deferred tax liability at Exelon, and a corresponding adjustment to income tax expense, net of federal taxes. There were no impacts to ComEd, BGE, PHI, Pepco, DPL, and ACE for the years ended December 31, 2024, 2023, and 2022. December 31, 2024 Exelon Decrease to Deferred Income Tax Liability and Income Tax Expense, Net of Federal Taxes $ — December 31, 2023 Decrease to Deferred Income Tax Liability and Income Tax Expense, Net of Federal Taxes (54) December 31, 2022 Increase to Deferred Income Tax Liability and Income Tax Expense, Net of Federal Taxes 67 Pennsylvania Corporate Income Tax Rate Change (Exelon and PECO) On July 8, 2022, Pennsylvania enacted House Bill 1342, which will permanently reduce the corporate income tax rate from 9.99% to 4.99%. The tax rate will be reduced to 8.99% for the 2023 tax year. Starting with the 2024 tax year, the rate is reduced by 0.50% annually until it reaches 4.99% in 2031. As a result of the rate change, in the third quarter of 2022, Exelon and PECO recorded a one-time decrease to deferred income taxes of $390 million with a corresponding decrease to the deferred income taxes regulatory asset of $428 million for the amounts that are expected to be settled through future customer rates and an increase to income tax expense of $38 million (net of federal taxes). The tax rate decrease is not expected to have a material ongoing impact to Exelon’s and PECO’s financial statements. There were no changes to PECO's marginal state income tax rates for the years ended December 31, 2024 and 2023. Allocation of Tax Benefits (All Registrants) The Utility Registrants are party to an agreement with Exelon and other subsidiaries of Exelon that provides for the allocation of consolidated tax liabilities and benefits (Tax Sharing Agreement). The Tax Sharing Agreement provides that each party is allocated an amount of tax similar to that which would be owed had the party been separately subject to tax. In addition, any net federal and state benefits attributable to Exelon are reallocated to the other Registrants. That allocation is treated as a contribution from Exelon to the party receiving the benefit. The following table presents the allocation of tax benefits from Exelon under the Tax Sharing Agreement, for the year ended December 31, 2024, 2023, and 2022. ComEd PECO BGE PHI Pepco DPL ACE December 31, 2024 $ 30 $ 15 $ 14 $ 16 $ 9 $ 5 $ 2 December 31, 2023 (a) 13 19 — 10 4 — 2 December 31, 2022 (b) 1 47 — 28 23 3 2 __________ (a) BGE and DPL did not record an allocation of federal tax benefits from Exelon under the Tax Sharing Agreement as a result of a tax net operating loss. (b) BGE did not record an allocation of federal tax benefits from Exelon under the Tax Sharing Agreement as a result of a tax net operating loss. Allocation of Income Taxes to Regulated Utilities (All Registrants) In Q2 2024, the IRS issued a series of PLRs, to another taxpayer, providing guidance with respect to the application of the tax normalization rules to the allocation of consolidated tax benefits among the members of a consolidated group associated with NOLC for ratemaking purposes. The rulings provide that for ratemaking purposes the tax benefit of NOLC should be reflected on a separate company basis not taking into consideration the utilization of losses by other affiliates. A PLR issued to another taxpayer may not be relied on as precedent. For the Registrants, except for PECO, the methodology prescribed by the IRS in these PLRs could result in a material reduction of the regulatory liability established for EDITs arising from the TCJA corporate tax rate change that are being amortized and flowed through to customers as well as a reduction in the accumulated deferred income taxes included in rate base for ratemaking purposes. The Registrants will record the impact, if any, upon receiving their own PLRs from the IRS.

Retirement Benefits (All Regist

Retirement Benefits (All Registrants)	12 Months Ended
	Dec. 31, 2024
Retirement Benefits [Abstract]
Retirement Benefits (All Registrants)	Retirement Benefits (All Registrants) Exelon sponsors defined benefit pension and OPEB plans. Substantially all non-union employees and electing union employees hired on or after January 1, 2001 participate in cash balance pension plans. Effective January 1, 2009, substantially all newly-hired union-represented employees participate in cash balance pension plans. Effective February 1, 2018 for most newly-hired BSC non-represented, non-craft, employees, January 1, 2021 for most newly-hired utility management employees, and for certain newly-hired union employees pursuant to their collective bargaining agreements, these newly-hired employees are not eligible for pension benefits, and will instead be eligible to receive an enhanced non-discretionary employer contribution in an Exelon defined contribution savings plan. Effective January 1, 2018, most newly-hired non-represented, non-craft, employees are not eligible for OPEB benefits and employees represented by Local 614 are not eligible for retiree health care benefits. Effective January 1, 2021, most non-represented, non-craft, employees who are under the age of 40 are not eligible for retiree health care benefits. Effective January 1, 2022, management employees retiring on or after that date are no longer eligible for retiree life insurance benefits. The tables below show the pension and OPEB plans in which current and former employees of each operating company participated as of December 31, 2024: Operating Company (a) Name of Plan: ComEd PECO BGE PHI Pepco DPL ACE Qualified Pension Plans: Exelon Corporation Retirement Program (ECRP) X X X X X X X Exelon Corporation Pension Plan for Bargaining Unit Employees (PPBU) X Exelon Pension Plan (EPP) X X X X X X X Pepco Holdings LLC Retirement Plan (PHI Qualified) X X X X X X X Non-Qualified Pension Plans: Exelon Corporation Supplemental Pension Benefit Plan and 2000 Excess Benefit Plan (SPBP) X X X Exelon Corporation Supplemental Management Retirement Plan (SMRP) X X X X Constellation Energy Group, Inc. Senior Executive Supplemental Plan X X Constellation Energy Group, Inc. Supplemental Pension Plan X X Constellation Energy Group, Inc. Benefits Restoration Plan X X X Baltimore Gas & Electric Company Executive Benefit Plan X Baltimore Gas & Electric Company Manager Benefit Plan X X Pepco Holdings LLC 2011 Supplemental Executive Retirement Plan X X X X Conectiv Supplemental Executive Retirement Plan X X X Pepco Holdings LLC Combined Executive Retirement Plan X X Operating Company (a) Name of Plan: ComEd PECO BGE PHI Pepco DPL ACE OPEB Plans: PECO Energy Company Retiree Medical Plan (East) X X X X X X X Exelon Corporation Health Care Program (West) X X X X X X X Pepco Holdings LLC Welfare Plan for Retirees (PHI PRW) X X X X X X X Exelon Corporation Employees’ Life Insurance Plan X X X Exelon Corporation Health Reimbursement Arrangement Plan X X X BGE Retiree Medical Plan X X X X X X X BGE Retiree Dental Plan X Exelon Retiree Medical Plan of Constellation Energy Nuclear Group, LLC X X X Exelon Retiree Dental Plan of Constellation Energy Nuclear Group, LLC X X X __________ (a) Employees generally remain in their legacy benefit plans when transferring between operating companies. Exelon’s traditional and cash balance pension plans are intended to be tax-qualified defined benefit plans. Exelon has elected that the trusts underlying these plans be treated as qualified trusts under the IRC. If certain conditions are met, Exelon can deduct payments made to the qualified trusts, subject to certain IRC limitations. Benefit Obligations, Plan Assets, and Funded Status As of February 1, 2022, in connection with the separation, Exelon's pension and OPEB plans were remeasured. The remeasurement and separation resulted in a decrease to the Pension obligation, net of plan assets, of $921 million and a decrease to the OPEB obligation of $893 million. Additionally, AOCI decreased by $1,994 million (after-tax) and Regulatory assets and liabilities increased by $14 million and $5 million, respectively. Key assumptions were held consistent with the year end December 31, 2021 assumptions with the exception of the discount rate. During the first quarter of 2024, Exelon received an updated valuation of its pension and OPEB to reflect actual census data as of January 1, 2024. This valuation resulted in an increase to the pension obligation of $98 million and a decrease to the OPEB obligations of $1 million. Additionally, AOCI increased by $25 million (after-tax) and Regulatory assets and liabilities increased by $66 million and $2 million, respectively. The following tables provide a rollforward of the changes in the benefit obligations and plan assets of Exelon for the most recent two years for all plans combined: Pension Benefits OPEB 2024 2023 2024 2023 Change in benefit obligation: Net benefit obligation as of the beginning of year $ 10,988 $ 10,677 $ 1,908 $ 1,884 Service cost 166 155 27 26 Interest cost 565 578 96 101 Plan participants’ contributions — — 27 27 Actuarial (gain) loss⁽ᵃ⁾ (331) 406 (32) 55 Plan amendments — 4 — — Settlements (22) (42) — — Gross benefits paid (821) (790) (189) (185) Net benefit obligation as of the end of year $ 10,545 $ 10,988 $ 1,837 $ 1,908 Pension Benefits OPEB 2024 2023 2024 2023 Change in plan assets: Fair value of net plan assets as of the beginning of year $ 9,402 $ 9,521 $ 1,355 $ 1,351 Actual return on plan assets 100 638 108 108 Employer contributions 126 75 54 54 Plan participants’ contributions — — 27 27 Gross benefits paid (821) (790) (189) (185) Settlements (22) (42) — — Fair value of net plan assets as of the end of year $ 8,785 $ 9,402 $ 1,355 $ 1,355 __________ (a) The pension and OPEB gains in 2024 primarily reflect an increase in the discount rate. The pension and OPEB losses in 2023 primarily reflect a decrease in the discount rate. Exelon presents its benefit obligations and plan assets net on its Consolidated Balance Sheets within the following line items: Pension Benefits OPEB 2024 2023 2024 2023 Other noncurrent assets $ — $ — $ 10 $ — Other current liabilities (15) (15) (20) (26) Pension obligations (1,745) (1,571) — — Non-pension postretirement benefit obligations — — (472) (527) Unfunded status, net (net benefit obligation less plan assets) $ (1,760) $ (1,586) $ (482) $ (553) The following table provides the ABO and fair value of plan assets for all pension plans with an ABO in excess of plan assets. Information for pension and OPEB plans with projected benefit obligations (PBO) and accumulated postretirement benefit obligations (APBO), respectively, in excess of plan assets have been disclosed in the Obligations and Plan Assets table above as all pension and a majority of the OPEB plans are underfunded. Exelon 2024 2023 ABO $ 10,076 $ 10,376 Fair value of net plan assets 8,785 9,279 Components of Net Periodic Benefit Costs The majority of the 2024 pension benefit cost for the Exelon-sponsored plans is calculated using an expected long-term rate of return on plan assets of 7.00% and a discount rate of 5.19%. The majority of the 2024 OPEB cost is calculated using an expected long-term rate of return on plan assets of 6.50% for funded plans and a discount rate of 5.17%. A portion of the net periodic benefit cost for all plans is capitalized in the Consolidated Balance Sheets. The following table presents the components of Exelon’s net periodic benefit costs, prior to capitalization, for the years ended December 31, 2024, 2023, and 2022. Pension Benefits OPEB 2024 2023 2022 2024 2023 2022 Components of net periodic benefit cost: Service cost $ 166 $ 155 $ 236 $ 27 $ 26 $ 41 Interest cost 565 578 439 96 101 76 Expected return on assets (736) (755) (822) (84) (83) (99) Amortization of: Prior service cost (credit) 2 2 2 (8) (10) (19) Actuarial loss (gain) 214 166 295 — (2) 12 Settlement and other charges 10 20 — — — — Net periodic benefit cost $ 221 $ 166 $ 150 $ 31 $ 32 $ 11 Cost Allocation to Exelon Subsidiaries All Registrants account for their participation in Exelon’s pension and OPEB plans by applying multi-employer accounting. Exelon allocates costs related to its pension and OPEB plans to its subsidiaries based on both active and retired employee participation in each plan. The amounts below represent the Registrants' allocated pension and OPEB costs (benefit). For Exelon, the service cost component is included in Operating and maintenance expense and Property, plant, and equipment, net while the non-service cost components are included in Other, net and Regulatory assets. For PHI and each of the Utility Registrants, the service cost and non-service cost components are included in Operating and maintenance expense and Property, plant, and equipment, net in their consolidated financial statements. For the Years Ended December 31, Exelon ComEd PECO BGE PHI Pepco DPL ACE 2024 $ 252 $ 72 $ (1) $ 59 $ 93 $ 32 $ 15 $ 12 2023 198 26 (14) 56 99 34 18 13 2022 161 60 (9) 44 53 9 3 12 Components of AOCI and Regulatory Assets Exelon recognizes the overfunded or underfunded status of defined benefit pension and OPEB plans as an asset or liability on its Consolidated Balance Sheets, with offsetting entries to AOCI and Regulatory assets (liabilities). A portion of current year actuarial (gains) losses and prior service costs (credits) is capitalized in Exelon’s Consolidated Balance Sheets to reflect the expected regulatory recovery of these amounts, which would otherwise be recorded to AOCI. The following tables provide the components of AOCI and Regulatory assets (liabilities) for Exelon for the years ended December 31, 2024, 2023, and 2022 for all plans combined. The tables include amounts related to Generation prior to the separation. Pension Benefits OPEB 2024 2023 2022 2024 2023 2022 Changes in plan assets and benefit obligations recognized in AOCI and Regulatory assets (liabilities): Current year actuarial loss (gain) $ 305 $ 523 $ (226) $ (56) $ 30 $ (271) Amortization of actuarial (loss) gain (214) (166) (295) — 2 (12) Separation of Constellation — — (2,631) — — (43) Current year prior service cost — 4 — — — — Amortization of prior service (cost) credit (2) (2) (2) 8 10 19 Settlements (10) (20) — — — — Total recognized in AOCI and Regulatory assets (liabilities) $ 79 $ 339 $ (3,154) $ (48) $ 42 $ (307) Total recognized in AOCI $ 56 $ 99 $ (2,719) $ (1) $ 4 $ (74) Total recognized in Regulatory assets (liabilities) $ 23 $ 240 $ (435) $ (47) $ 38 $ (233) The following table provides the components of gross AOCI and Regulatory assets (liabilities) for Exelon that have not been recognized as components of periodic benefit cost as of December 31, 2024 and 2023, respectively, for all plans combined: Pension Benefits OPEB 2024 2023 2024 2023 Prior service cost (credit) $ 19 $ 21 $ (37) $ (45) Actuarial loss (gain) 4,029 3,948 (157) (101) Total $ 4,048 $ 3,969 $ (194) $ (146) Total included in AOCI $ 1,028 $ 972 $ (18) $ (17) Total included in Regulatory assets (liabilities) $ 3,020 $ 2,997 $ (176) $ (129) Average Remaining Service Period For pension benefits, Exelon amortizes its unrecognized prior service costs (credits) and certain actuarial (gains) losses, as applicable, based on participants’ average remaining service periods. For OPEB, Exelon amortizes its unrecognized prior service costs (credits) over participants’ average remaining service period to benefit eligibility age and amortizes certain actuarial (gains) losses over participants’ average remaining service period to expected retirement. The resulting average remaining service periods for pension and OPEB were as follows: 2024 2023 2022 Pension plans 12.5 12.6 12.5 OPEB plans: Benefit Eligibility Age 7.8 8.1 7.9 Expected Retirement 9.0 9.3 9.1 Assumptions The measurement of the plan obligations and costs of providing benefits under Exelon’s defined benefit and OPEB plans involves various factors, including the development of valuation assumptions and inputs and accounting policy elections. The measurement of benefit obligations and costs is impacted by several assumptions and inputs, as shown below, among other factors. When developing the required assumptions, Exelon considers historical information as well as future expectations. Expected Rate of Return. In determining the EROA, Exelon considers historical economic indicators (including inflation and GDP growth) that impact asset returns, as well as expectations regarding future long-term capital market performance, weighted by Exelon’s target asset class allocations. Mortality . The mortality assumption is composed of a base table that represents the current expectation of life expectancy of the population adjusted by an improvement scale that attempts to anticipate future improvements in life expectancy. For the years ended December 31, 2024 and 2023, Exelon’s mortality assumption utilizes the SOA 2019 base table (Pri-2012) and MP-2021 improvement scale adjusted to use Proxy SSA ultimate improvement rates. For Exelon, the following assumptions were used to determine the benefit obligations for the plans as of December 31, 2024 and 2023. Assumptions used to determine year-end benefit obligations are the assumptions used to estimate the subsequent year’s net periodic benefit costs. Pension Benefits OPEB 2024 2023 2024 2023 Discount rate (a) 5.68 % 5.19 % 5.64 % 5.17 % Investment crediting rate (b) 5.69 % 5.03 % N/A N/A Rate of compensation increase 3.75 % 3.75 % 3.75 % 3.75 % Mortality table Pri-2012 table with MP- 2021 improvement scale (adjusted) Pri-2012 table with MP- 2021 improvement scale (adjusted) Pri-2012 table with MP- 2021 improvement scale (adjusted) Pri-2012 table with MP- 2021 improvement scale (adjusted) Health care cost trend on covered charges N/A N/A Initial and ultimate trend rate of 5.00% Initial and ultimate trend rate of 5.00% __________ (a) The discount rates above represent the blended rates used to determine the majority of Exelon’s pension and OPEB obligations. Certain benefit plans used individual rates, which range from 5.56% - 5.76% and 5.60% - 5.64% for pension and OPEB plans, respectively, as of December 31, 2024 and 5.11% - 5.27% and 5.15% - 5.17% for pension and OPEB plans, respectively, as of December 31, 2023. (b) The investment crediting rate above represents a weighted average rate. The following assumptions were used to determine the net periodic benefit cost for Exelon for the years ended December 31, 2024, 2023 and 2022: Pension Benefits OPEB 2024 2023 2022 2024 2023 2022 Discount rate (a) 5.19 % 5.53 % 3.24 % 5.17 % 5.51 % 3.20 % Investment crediting rate (b) 5.03 % 5.07 % 3.75 % N/A N/A N/A Expected return on plan assets (c) 7.00 % 7.00 % 7.00 % 6.50 % 6.50 % 6.44 % Rate of compensation increase 3.75 % 3.75 % 3.75 % 3.75 % 3.75 % 3.75 % Mortality table Pri-2012 table with MP- 2021 improvement scale (adjusted) Pri-2012 table with MP- 2021 improvement scale (adjusted) Pri-2012 table with MP- 2021 improvement scale (adjusted) Pri-2012 table with MP- 2021 improvement scale (adjusted) Pri-2012 table with MP- 2021 improvement scale (adjusted) Pri-2012 table with MP- 2021 improvement scale (adjusted) Health care cost trend on covered charges N/A N/A N/A Initial and ultimate rate of 5.00% Initial and ultimate rate of 5.00% Initial and ultimate rate of 5.00% __________ (a) The discount rates above represent the blended rates used to establish the majority of Exelon’s pension and OPEB costs. Certain benefit plans used individual rates, which range from 5.11%-5.27% and 5.15%-5.17% for pension and OPEB plans, respectively, for the year ended December 31, 2024; 5.46%-5.60% and 5.49%-5.51% for pension and OPEB plans; respectively, for the year ended December 31, 2023; and 2.55%-3.24% and 2.84%-3.20% for pension and OPEB plans, respectively, for the year ended December 31, 2022. (b) The investment crediting rate above represents a weighted average rate. (c) Not applicable to pension and OPEB plans that do not have plan assets. Contributions Exelon allocates contributions related to its ECRP and PPBU pension plans and East and West OPEB plans to its subsidiaries based on accounting cost. For the EPP pension plan, PHI Qualified, and PHI PRW plans, pension and OPEB contributions are allocated to the subsidiaries based on employee participation (both active and retired). For Exelon, in connection with the separation, additional qualified pension contributions of $207 million and $33 million were completed on February 1, 2022 and March 2, 2022, respectively. The following table provides contributions to the pension and OPEB plans: Pension Benefits OPEB 2024 2023 2022 2024 2023 2022 Exelon $ 126 $ 75 $ 570 $ 54 $ 54 $ 42 ComEd 7 24 176 18 17 8 PECO 3 1 15 1 — 3 BGE 17 — 48 20 19 20 PHI 74 8 69 12 16 9 Pepco 1 1 3 8 11 8 DPL 1 2 1 2 2 — ACE 7 — 7 2 3 — Management considers various factors when making pension funding decisions, including actuarially determined minimum contribution requirements under ERISA, contributions required to avoid benefit restrictions and at-risk status as defined by the Pension Protection Act of 2006 (the "Act"), management of the pension obligation, and regulatory implications. The Act requires the attainment of certain funding levels to avoid benefit restrictions (such as an inability to pay lump sums or to accrue benefits prospectively), and at-risk status (which triggers higher minimum contribution requirements and participant notification). The projected contributions below reflect a funding strategy to make annual contributions with the objective of achieving 100% funded status on an ABO basis over time. This funding strategy helps minimize volatility of future period required pension contributions. Based on this funding strategy and current market conditions, which are subject to change, Exelon’s estimated annual qualified pension contributions will be approximately $275 million in 2025. Unlike the qualified pension plans, Exelon’s non-qualified pension plans are not funded, given they are not subject to statutory minimum contribution requirements. While OPEB plans are also not subject to statutory minimum contribution requirements, Exelon does fund certain of its plans. For Exelon's funded OPEB plans, contributions generally equal accounting costs, however, Exelon’s management has historically considered several factors in determining the level of contributions to its OPEB plans, including liabilities management, levels of benefit claims paid, and regulatory implications (amounts deemed prudent to meet regulatory expectations and best assure continued rate recovery). The amounts below include benefit payments related to unfunded plans. The following table provides all Registrants' planned contributions to the qualified pension plans, planned benefit payments to non-qualified pension plans, and planned contributions to OPEB plans in 2025: Qualified Pension Plans Non-Qualified Pension Plans OPEB Exelon $ 275 $ 16 $ 45 ComEd 187 2 21 PECO 9 1 1 BGE 26 1 14 PHI 36 8 7 Pepco 1 1 6 DPL 1 — 1 ACE 4 — 1 Estimated Future Benefit Payments Estimated future benefit payments to participants in all of the pension plans and postretirement benefit plans as of December 31, 2024 were: Pension Benefits OPEB 2025 $ 809 $ 156 2026 809 157 2027 821 156 2028 811 155 2029 815 154 2030 through 2034 4,019 746 Total estimated future benefits payments through 2034 $ 8,084 $ 1,524 Plan Assets Investment Strategy. On a regular basis, Exelon evaluates its investment strategy to ensure plan assets will be sufficient to pay plan benefits when due. As part of this ongoing evaluation, Exelon may make changes to its targeted asset allocation and investment strategy. Exelon has developed and implemented a liability hedging investment strategy for its qualified pension plans that has reduced the volatility of its pension assets relative to its pension liabilities. Exelon is likely to continue to gradually increase the liability hedging portfolio as the funded status of its plans improves. The overall objective is to achieve attractive risk-adjusted returns that will balance the liquidity requirements of the plans’ liabilities while striving to minimize the risk of significant losses. Trust assets for Exelon’s OPEB plans are managed in a diversified investment strategy that prioritizes maximizing liquidity and returns while minimizing asset volatility. Actual asset returns have an impact on the costs reported for the Exelon-sponsored pension and OPEB plans. The actual asset returns across Exelon’s pension and OPEB plans for the year ended December 31, 2024 were 1.49% and 8.54%, respectively, compared to an expected long-term return assumption of 7.00% and 6.50%, respectively. Exelon used an EROA of 7.00% and 6.50% to estimate its 2025 pension and OPEB costs, respectively. Exelon’s pension and OPEB plan target asset allocations as of December 31, 2024 and 2023 were as follows: December 31, 2024 December 31, 2023 Asset Category Pension Benefits OPEB Pension Benefits OPEB Equity securities 28 % 44 % 28 % 44 % Fixed income securities 44 % 41 % 44 % 41 % Alternative investments (a) 28 % 15 % 28 % 15 % Total 100 % 100 % 100 % 100 % __________ (a) Alternative investments include private equity, hedge funds, real estate, and private credit. Concentrations of Credit Risk. Exelon evaluated its pension and OPEB plans’ asset portfolios for the existence of significant concentrations of credit risk as of December 31, 2024. Types of concentrations that were evaluated include, but are not limited to, investment concentrations in a single entity, type of industry, foreign country, and individual fund. As of December 31, 2024, there were no significant concentrations (defined as greater than 10% of plan assets) of risk in Exelon’s pension and OPEB plan assets. Fair Value Measurements The following tables present pension and OPEB plan assets measured and recorded at fair value in Exelon's Consolidated Balance Sheets on a recurring basis and their level within the fair value hierarchy as of December 31, 2024 and 2023: December 31, 2024 December 31, 2023 Level 1 Level 2 Level 3 Not Subject to Leveling Total Level 1 Level 2 Level 3 Not Subject to Leveling Total Pension plan assets (a) Cash and cash equivalents $ 205 $ — $ — $ — $ 205 $ 267 $ — $ — $ — $ 267 Equities (b) 1,127 — 1 1,361 2,489 1,513 — 1 694 2,208 Fixed income: U.S. Treasury and agencies 1,333 199 — — 1,532 1,291 184 — — 1,475 State and municipal debt — 32 — — 32 — 42 — — 42 Corporate debt — 1,551 16 — 1,567 — 1,792 9 — 1,801 Other (b) — 25 — 618 643 — 79 — 788 867 Fixed income subtotal 1,333 1,807 16 618 3,774 1,291 2,097 9 788 4,185 Private equity — — — 1,249 1,249 — — — 1,166 1,166 Hedge funds — — — 464 464 — — — 578 578 Real estate — — — 730 730 — — — 760 760 Private credit — — — 544 544 — — — 626 626 Pension plan assets subtotal $ 2,665 $ 1,807 $ 17 $ 4,966 $ 9,455 $ 3,071 $ 2,097 $ 10 $ 4,612 $ 9,790 OPEB plan assets (a) Cash and cash equivalents $ 44 $ — $ — $ — $ 44 $ 45 $ — $ — $ — $ 45 Equities 437 1 — 188 626 315 1 — 270 586 Fixed income: U.S. Treasury and agencies 18 34 — — 52 15 54 — — 69 State and municipal debt — 2 — — 2 — 7 — — 7 Corporate debt — 32 — — 32 — 44 — — 44 Other 166 2 — 262 430 175 4 — 206 385 Fixed income subtotal 184 70 — 262 516 190 109 — 206 505 Hedge funds — — — 75 75 — — — 109 109 Real estate — — — 78 78 — — — 88 88 Private credit — — — 16 16 — — — 22 22 OPEB plan assets subtotal $ 665 $ 71 $ — $ 619 $ 1,355 $ 550 $ 110 $ — $ 695 $ 1,355 Total pension and OPEB plan assets (c) $ 3,330 $ 1,878 $ 17 $ 5,585 $ 10,810 $ 3,621 $ 2,207 $ 10 $ 5,307 $ 11,145 __________ (a) See Note 17—Fair Value of Financial Assets and Liabilities for a description of levels within the fair value hierarchy. (b) Includes derivative instruments of $(21) million and $51 million for the years ended December 31, 2024 and 2023, respectively, which have total notional amounts of $5,123 million and $3,351 million as of December 31, 2024 and 2023, respectively. The notional principal amounts for these instruments provide one measure of the transaction volume outstanding as of the fiscal years ended and do not represent the amount of Exelon's exposure to credit or market loss. (c) Excludes net liabilities of $670 million and $388 million as of December 31, 2024 and 2023, respectively, which include certain derivative assets that have notional amounts of $41 million and $59 million as of December 31, 2024 and 2023, respectively. These items are required to reconcile to the fair value of net plan assets and consist primarily of receivables or payables related to pending securities sales and purchases, interest and dividends receivable, and repurchase agreement obligations. The repurchase agreements generally have maturities ranging from 3 - 6 months. The following table presents the reconciliation of Level 3 assets and liabilities for Exelon measured at fair value for pension and OPEB plans for the years ended December 31, 2024 and 2023: Fixed Income Equities Total Pension Assets Balance as of January 1, 2024 $ 9 $ 1 $ 10 Actual return on plan assets: Relating to assets still held as of the reporting date (1) — (1) Purchases, sales and settlements: Purchases 2 — 2 Level 3 transfers in 6 — 6 Balance as of December 31, 2024 $ 16 $ 1 $ 17 Fixed Income Equities Total Pension Assets Balance as of January 1, 2023 $ 12 $ — $ 12 Actual return on plan assets: Relating to assets still held as of the reporting date — — — Purchases, sales and settlements: Purchases — — — Level 3 transfers (out) in (3) 1 (2) Balance as of December 31, 2023 $ 9 $ 1 $ 10 _ Valuation Techniques Used to Determine Fair Value The techniques used to fair value the pension and OPEB assets invested in cash equivalents are the same as the valuation techniques used to determine the fair value of financial assets. See Cash Equivalents in Note 17 - Fair Value of Financial Assets and Liabilities for further information. Below outlines the techniques used to fair value the pension and OPEB assets invested in equities, fixed income, derivative instruments, private credit, private equity, real estate, and hedge funds. Equities. These investments consist of individually held equity securities, equity mutual funds, and equity commingled funds in domestic and foreign markets. With respect to individually held equity securities, the trustees obtain prices from pricing services, whose prices are generally obtained from direct feeds from market exchanges, which Exelon is able to independently corroborate. Equity securities held individually, including real estate investment trusts, rights, and warrants, are primarily traded on exchanges that contain only actively traded securities due to the volume trading requirements imposed by these exchanges. The equity securities that are held directly by the trust funds are valued based on quoted prices in active markets and categorized as Level 1. Certain equity securities have been categorized as Level 2 because they are based on evaluated prices that reflect observable market information, such as actual trade information or similar securities. Certain private placement equity securities are categorized as Level 3 because they are not publicly traded and are priced using significant unobservable inputs. Equity commingled funds and mutual funds are maintained by investment companies, and fund investments are held in accordance with a stated set of fund objectives. The values of some of these funds are publicly quoted. For mutual funds which are publicly quoted, the funds are valued based on quoted prices in active markets and have been categorized as Level 1. For equity commingled funds and mutual funds that are not publicly quoted, the fund administrators value the funds using the NAV per fund share, derived from the quoted prices in active markets on the underlying securities and are not classified within the fair value hierarchy. These investments can typically be redeemed monthly or more frequently, with 30 or less days of notice and without further restrictions. Fixed income. For fixed income securities, which consist primarily of corporate debt securities, U.S. government securities, foreign government securities, municipal bonds, asset and mortgage-backed securities, commingled funds, mutual funds, and derivative instruments, the trustees obtain multiple prices from pricing vendors whenever possible, which enables cross-provider validations in addition to checks for unusual daily movements. A primary price source is identified based on asset type, class, or issue for each security. With respect to individually held fixed income securities, the trustees monitor prices supplied by pricing services and may use a supplemental price source or change the primary price source of a given security if the portfolio managers challenge an assigned price and the trustees determine another price source is considered to be preferable. Exelon has obtained an understanding of how these prices are derived, including the nature and observability of the inputs used in deriving such prices. Additionally, Exelon selectively corroborates the fair values of securities by comparison to other market-based price sources. Investments in U.S. Treasury securities have been categorized as Level 1 because they trade in highly-liquid and transparent markets. Certain private placement fixed income securities have been categorized as Level 3 because they are priced using certain significant unobservable inputs and are typically illiquid. The remaining fixed income securities, including certain other fixed income investments, are based on evaluated prices that reflect observable market information, such as actual trade information of similar securities, adjusted for observable differences and are categorized as Level 2. Other fixed income investments primarily consist of fixed income commingled funds and mutual funds, which are maintained by investment companies and hold fund investments in accordance with a stated set of fund objectives. The values of some of these funds are publicly quoted. For mutual funds which are publicly quoted, the funds are valued based on quoted prices in active markets and have been categorized as Level 1. For fixed income commingled funds and mutual funds that are not publicly quoted, the fund administrators value the funds using the NAV per fund share, derived from the quoted prices in active markets of the underlying securities and are not classified within the fair value hierarchy. These investments typically can be redeemed monthly or more frequently, with 30 or less days of notice and without further restrictions. Derivative instruments. These instruments, consisting primarily of futures and swaps to manage risk, are recorded at fair value. Over-the-counter derivatives are valued daily, based on quoted prices in active markets and trade in open markets, and have been categorized as Level 1. Derivative instruments other than over-the-counter derivatives are valued based on external price data of comparable securities and have been categorized as Level 2. Private credit. Private credit investments primarily consist of investments in private debt strategies. These investments are generally less liquid assets with an underlying term of 3 to 5 years and are intended to be held to maturity. The fair value of these investments is determined by the fund manager or administrator using a combination of valuation models including cost models, market models, and income models and typically cannot be redeemed until maturity of the term loan. Managed private credit fund investments are not classified within the fair value hierarchy because their fair value is determined using NAV or its equivalent as a practical expedient. Private equity. These investments include those in limited partnerships that invest in operating companies that are not publicly traded on a stock exchange such as leveraged buyouts, growth capital, venture capital, distressed investments, and investments in natural resources. These investments typically cannot be redeemed and are generally liquidated over a period of 8 to 10 years from the initial investment date, which is based on Exelon's understanding of the investment funds. Private equity valuations are reported by the fund manager and are based on the valuation of the underlying investments, which include unobservable inputs such as cost, operating results, discounted future cash flows, and market based comparable data. The fair value of private equity investments is determined using NAV or its equivalent as a practical expedient, and therefore, these investments are not classified within the fair value hierarchy. Real estate. These invest

Derivative Financial Instrument

Derivative Financial Instruments (All Registrants)	12 Months Ended
	Dec. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments (All Registrants)	Derivative Financial Instruments (All Registrants) The Registrants use derivative instruments to manage commodity price risk and interest rate risk related to ongoing business operations. The Registrants do not execute derivatives for speculative or proprietary trading purposes. Authoritative guidance requires that derivative instruments be recognized as either assets or liabilities at fair value, with changes in fair value of the derivative recognized in earnings immediately. Other accounting treatments are available through special election and designation, provided they meet specific, restrictive criteria both at the time of designation and on an ongoing basis. These alternative permissible accounting treatments include NPNS, cash flow hedges, and fair value hedges. At ComEd, derivative economic hedges related to commodities are recorded at fair value and offset by a corresponding regulatory asset or liability. At Exelon, derivative economic hedges related to interest rates are recorded at fair value and offsets are recorded to Electric operating revenues or Interest expense based on the activity the transaction is economically hedging. For all NPNS derivative instruments, accounts receivable or accounts payable are recorded when derivatives settle and revenue or expense is recognized in earnings as the underlying physical commodity is sold or consumed. At Exelon, derivative hedges that qualify and are designated as cash flow hedges are recorded at fair value and offsets are recorded to AOCI. ComEd’s use of cash collateral is generally unrestricted unless ComEd is downgraded below investment grade. Cash collateral held by PECO, BGE, Pepco, DPL, and ACE must be deposited in an unaffiliated major U.S. commercial bank or foreign bank with a U.S. branch office that meets certain qualifications. Commodity Price Risk The Utility Registrants employ established policies and procedures to manage their risks associated with market fluctuations in commodity prices by entering into physical and financial derivative contracts, which are either determined to be non-derivative or classified as economic hedges. The Utility Registrants procure electric and natural gas supply through a competitive procurement process approved by each of the respective state utility commissions. The Utility Registrants’ hedging programs are intended to reduce exposure to energy and natural gas price volatility and have no direct earnings impact as the costs are fully recovered from customers through regulatory-approved recovery mechanisms. The following table provides a summary of the Utility Registrants’ primary derivative hedging instruments, listed by commodity and accounting treatment. Registrant Commodity Accounting Treatment Hedging Instrument ComEd Electricity NPNS Fixed price contracts based on all requirements in the IPA procurement plans. Electricity Changes in fair value of economic hedge recorded to an offsetting regulatory asset or liability (a) 20-year floating-to-fixed energy swap contracts beginning June 2012 based on the renewable energy resource procurement requirements in the Illinois Settlement Legislation of approximately 1.3 million MWhs per year. PECO Electricity NPNS Fixed price contracts for default supply requirements through full requirements contracts. Gas NPNS Fixed price contracts to cover about 10% of planned natural gas purchases in support of projected firm sales. BGE Electricity NPNS Fixed price contracts for all SOS requirements through full requirements contracts. Gas NPNS Fixed price purchases associated with forecasted gas supply requirements. Pepco Electricity NPNS Fixed price contracts for all SOS requirements through full requirements contracts. DPL Electricity NPNS Fixed price contracts for all SOS requirements through full requirements contracts. Gas NPNS Fixed and index priced contracts through full requirements contracts. Gas Changes in fair value of economic hedge recorded to an offsetting regulatory asset or liability (b) Exchange traded future contracts for up to 50% of estimated monthly purchase requirements each month, including purchases for storage injections. ACE Electricity NPNS Fixed price contracts for all BGS requirements through full requirements contracts. _________ (a) See Note 3—Regulatory Matters for additional information. (b) The fair value of the DPL economic hedge is not material as of December 31, 2024 and 2023. The fair value of derivative economic hedges is presented in Other current assets and current and noncurrent Mark-to-market derivative liabilities in Exelon's and ComEd's Consolidated Balance Sheets. Interest Rate and Other Risk (Exelon) Exelon Corporate uses a combination of fixed-rate and variable-rate debt to manage interest rate exposure. Exelon Corporate may utilize interest rate derivatives to lock in rate levels in anticipation of future financings, which are typically designated as cash flow hedges. In addition, Exelon Corporate utilized interest rate swaps to manage interest rate exposure and manage potential fluctuations in Electric operating revenues at the corporate level in consolidation. These interest rate swaps were accounted for as economic hedges. A hypothetical 50 basis point change in the interest rates associated with Exelon's interest rate swaps as of December 31, 2024 would result in an immaterial impact to Exelon's Consolidated Net Income. Below is a summary of the interest rate hedge balances at December 31, 2024 and 2023. December 31, 2024 Derivatives Designated Economic Hedges Total Other current assets $ 14 $ — $ 14 Other deferred debits (noncurrent assets) 12 — 12 Total derivative assets 26 — 26 Mark-to-market derivative liabilities (current liabilities) (1) — (1) Total mark-to-market derivative liabilities (1) — (1) Total mark-to-market derivative net assets $ 25 $ — $ 25 December 31, 2023 Derivatives Designated Economic Hedges Total Other current assets 11 1 $ 12 Total derivative assets 11 1 12 Mark-to-market derivative liabilities (current liabilities) (24) (22) (46) Total mark-to-market derivative liabilities (24) (22) (46) Total mark-to-market derivative net liabilities $ (13) $ (21) $ (34) Cash Flow Hedges (Interest Rate Risk) For derivative instruments that qualify and are designated as cash flow hedges, the changes in fair value each period are initially recorded in AOCI and reclassified into earnings when the underlying transaction affects earnings. In February 2024, Exelon terminated the previously issued floating-to-fixed swaps with a total notional of $1.3 billion upon issuance of $1.7 billion of debt. See Note 16 — Debt and Credit Agreements for additional information on the debt issuance. Prior to the termination, the AOCI derivative gain was $33 million (net of tax). The settlements resulted in a cash receipt of $30 million. The accumulated AOCI gain of $23 million (net of tax) is being amortized into Interest expense in Exelon's Consolidated Statement of Operations and Comprehensive Income over the 5-year and 10-year terms of the swaps. During the fourth quarter of 2024, Exelon Corporate entered into $55 million notional of 5-year maturity floating-to-fixed swaps and $55 million notional of 10-year maturity floating-to-fixed swaps, for a total notional of $110 million designated as cash flow hedges. The following table provides the notional amounts outstanding held by Exelon at December 31, 2024 and 2023. December 31, 2024 December 31, 2023 5-year maturity floating-to-fixed swaps $ 657 $ 655 10-year maturity floating-to-fixed swaps 658 655 Total $ 1,315 $ 1,310 The AOCI derivative gain (net of tax) was $19 million as of December 31, 2024 and loss was $10 million as of December 31, 2023. See Note 21 – Changes in Accumulated Other Comprehensive Income (Loss) for additional information. Economic Hedges (Interest Rate and Other Risk) Exelon Corporate executes derivative instruments to mitigate exposure to fluctuations in interest rates but for which the fair value or cash flow hedge elections were not made. For derivatives intended to serve as economic hedges, fair value is recorded on the balance sheet and changes in fair value each period are recognized in earnings or as a regulatory asset or liability, if regulatory requirements are met, each period. Exelon Corporate entered into floating-to-fixed interest rate cap swaps to manage a portion of interest rate exposure in connection with existing borrowings. As of December 31, 2023, Exelon held $1,000 million notional of floating-to-fixed interest rate cap swaps, which matured in March 2024. Exelon received payments on the interest rate cap when the floating rate exceeds the fixed rate. Settlements received were immaterial. Additionally, to manage potential fluctuations in Electric operating revenues related to ComEd's distribution formula rate, Exelon Corporate entered into a total of $4,875 million notional of 30-year constant maturity treasury interest rate (Corporate 30-year treasury) swaps from 2022 through 2023. The Corporate 30-year treasury swaps matured on December 31, 2023 and Exelon recorded a Mark-to-market liability of $22 million for the final settlement amount, which was paid in January 2024. Exelon Corporate recognized the following net pre-tax mark-to-market (losses) which are also recognized in Net fair value changes related to derivatives in Exelon's Consolidated Statements of Cash Flows. Twelve months ended December 31, 2024 Twelve months ended December 31, 2023 Income Statement Location Gain (Loss) Gain (Loss) Electric operating revenues $ — $ (20) Interest expense — — Total $ — $ (20) Credit Risk The Registrants would be exposed to credit-related losses in the event of non-performance by counterparties on executed derivative instruments. The credit exposure of derivative contracts, before collateral, is represented by the fair value of contracts at the reporting date. The Utility Registrants have contracts to procure electric and natural gas supply that provide suppliers with a certain amount of unsecured credit. If the exposure on the supply contract exceeds the amount of unsecured credit, the suppliers may be required to post collateral. The net credit exposure is mitigated primarily by the ability to recover procurement costs through customer rates. The amount of cash collateral received from external counterparties remained relatively consistent as of December 31, 2024 due to stable energy prices. The following table reflects the Registrants' cash collateral held from external counterparties, which is recorded in Other current liabilities on their respective Consolidated Balance Sheets, at December 31, 2024 and 2023 December 31, 2024 December 31, 2023 Exelon $ 181 $ 148 ComEd 176 146 PECO (a) — — BGE 1 1 PHI 4 1 Pepco 1 1 DPL 2 — ACE (a) — — __________ (a) PECO and ACE had less than one million in cash collateral held with external parties as of December 31, 2024 and 2023 (b) DPL had less than one million in cash collateral held with external parties at December 31, 2023. The Utility Registrants’ electric supply procurement contracts do not contain provisions that would require them to post collateral. PECO’s, BGE’s, and DPL’s natural gas procurement contracts contain provisions that could require PECO, BGE, and DPL to post collateral in the form of cash or credit support, which vary by contract and counterparty, with thresholds contingent upon PECO’s, BGE's, and DPL’s credit rating. As of December 31, 2024, PECO, BGE, and DPL were not required to post collateral for any of these agreements. If PECO, BGE, or DPL lost their investment grade credit rating as of December 31, 2024, they could have been required to post collateral to their counterparties of $51 million, $91 million, and $10 million, respectively.

Debt and Credit Agreements (All

Debt and Credit Agreements (All Registrants)	12 Months Ended
	Dec. 31, 2024
Debt Disclosure [Abstract]
Debt and Credit Agreements (All Registrants)	Debt and Credit Agreements (All Registrants) Short-Term Borrowings Exelon Corporate, ComEd, and BGE meet their short-term liquidity requirements primarily through the issuance of commercial paper. PECO meets its short-term liquidity requirements primarily through the issuance of commercial paper and borrowings from the Exelon intercompany money pool. Pepco, DPL, and ACE meet their short-term liquidity requirements primarily through the issuance of commercial paper and borrowings from the PHI intercompany money pool. PHI Corporate meets its short-term liquidity requirements primarily through the issuance of short-term notes and borrowings from the Exelon intercompany money pool. The Registrants may use their respective credit facilities for general corporate purposes, including meeting short-term funding requirements and the issuance of letters of credit. Commercial Paper The following table reflects the Registrants' commercial paper programs supported by the revolving credit agreements at December 31, 2024 and 2023: Credit Facility Size Outstanding Commercial Average Interest Rate on Commercial Paper Issuer 2024 (a) 2023 (a) 2024 2023 2024 2023 Exelon (b) $ 4,000 $ 4,000 $ 1,359 $ 1,624 4.66 % 5.58 % ComEd $ 1,000 $ 1,000 $ 36 $ 202 4.55 % 5.53 % PECO $ 600 $ 600 $ 192 $ 165 4.65 % 5.57 % BGE $ 600 $ 600 $ 175 $ 336 4.61 % 5.59 % PHI (c) $ 900 $ 900 $ 530 $ 394 4.70 % 5.60 % Pepco $ 300 (d) $ 300 $ 200 $ 132 4.69 % 5.59 % DPL $ 300 (d) $ 300 $ 144 $ 63 4.74 % 5.60 % ACE $ 300 (d) $ 300 $ 186 $ 199 4.67 % 5.60 % __________ (a) Excludes credit facility agreements arranged at minority and community banks. See below for additional information. (b) Includes revolving credit agreements at Exelon Corporate with a maximum program size of $900 million as of December 31, 2024 and December 31, 2023. Exelon Corporate had $426 million in outstanding commercial paper as of December 31, 2024 and $527 million outstanding commercial paper as of December 31, 2023. (c) Represents the consolidated amounts of Pepco, DPL, and ACE. (d) The standard maximum program size for revolving credit facilities is $300 million each for Pepco, DPL and ACE based on the credit agreements in place. However, the facilities at Pepco, DPL, and ACE have the ability to flex to $500 million, $500 million, and $350 million, respectively. The borrowing capacity may be increased or decreased during the term of the facility, except that (i) the sum of the borrowing capacity must equal the total amount of the facility, and (ii) the aggregate amount of credit used at any given time by each of Pepco, DPL, or ACE may not exceed $900 million or the maximum amount of short-term debt the company is permitted to have outstanding by its regulatory authorities. The total number of the borrowing reallocations may not exceed eight per year during the term of the facility. In January 2025, this ability was utilized to increase Pepco's program size to $340 million. As a result, the program size for ACE did not change and DPL was decreased to $260 million, which prevents the aggregate amount of outstanding short-term debt from exceeding the $900 million limit. In order to maintain their respective commercial paper programs in the amounts indicated above, each Registrant must have credit facilities in place, at least equal to the amount of its commercial paper program. A registrant does not issue commercial paper in an aggregate amount exceeding the then available capacity under its credit facility. At December 31, 2024, the Registrants had the following aggregate bank commitments, credit facility borrowings, and available capacity under their respective credit facilities: Available Capacity at December 31, 2024 Borrower Facility Type Aggregate Bank (a) Facility Draws Outstanding Actual To Support Additional Commercial (b) Exelon (b) Syndicated Revolver $ 4,000 $ — $ 49 $ 3,951 $ 2,592 ComEd Syndicated Revolver 1,000 — 15 985 949 PECO Syndicated Revolver 600 — 4 596 404 BGE Syndicated Revolver 600 — 25 575 400 PHI (c) Syndicated Revolver 900 — 2 898 368 Pepco Syndicated Revolver 300 — 2 298 98 DPL Syndicated Revolver 300 — — 300 156 ACE Syndicated Revolver 300 — — 300 114 __________ (a) Excludes credit facility agreements arranged at minority and community banks. See below for additional information. (b) Includes $900 million aggregate bank commitment related to Exelon Corporate. Exelon Corporate had $3 million outstanding letters of credit as of December 31, 2024. Exelon Corporate had $471 million in available capacity to support additional commercial paper as of December 31, 2024. (c) Represents the consolidated amounts of Pepco, DPL, and ACE. The following table reflects the Registrants' credit facility agreements arranged at minority and community banks at December 31, 2024 and 2023. These are excluded from the Maximum Program Size and Aggregate Bank Commitment amounts within the two tables above and the facilities may be used to issue letters of credit. Aggregate Bank Commitments Outstanding Letters of Credit Borrower 2024 (a) 2023 2024 2023 Exelon (b) $ 140 $ 140 $ 5 $ 10 ComEd 40 40 3 7 PECO 40 40 — 1 BGE 15 15 2 2 PHI (c) 45 45 — — Pepco 15 15 — — DPL 15 15 — — ACE 15 15 — — __________ (a) These facilities were entered into on October 4, 2024 and expire on October 3, 2025. (b) Represents the consolidated amounts of ComEd, PECO, BGE, Pepco, DPL, and ACE. (c) Represents the consolidated amounts of Pepco, DPL, and ACE. Revolving Credit Agreements On August 29, 2024, Exelon Corporate and each of the Utility Registrants amended and restated their respective syndicated revolving credit facility, extending the maturity date to August 29, 2029. The following table reflects the credit agreements: Borrower Aggregate Bank Commitment Interest Rate Exelon Corporate $ 900 SOFR plus 1.275% ComEd $ 1,000 SOFR plus 1.000% PECO $ 600 SOFR plus 0.900% BGE $ 600 SOFR plus 0.900% Pepco $ 300 SOFR plus 1.075% DPL $ 300 SOFR plus 1.000% ACE $ 300 SOFR plus 1.000% Borrowings under Exelon’s, ComEd’s, PECO’s, BGE's, Pepco's, DPL's, and ACE's revolving credit agreements bear interest at a rate based upon either the prime rate or a SOFR-based rate, plus an adder based upon the particular Registrant’s credit rating. The adders for the prime based borrowings and SOFR-based borrowings as of December 31, 2024 are presented in the following table: Exelon (a) ComEd PECO BGE Pepco DPL ACE Prime based borrowings 0 - 27.5 — — — 7.5 — — SOFR-based borrowings 90.0 - 127.5 100.0 90.0 90.0 107.5 100.0 100.0 __________ (a) Includes interest rate adders at Exelon Corporate of 27.5 basis points and 127.5 basis points for prime and SOFR-based borrowings, respectively. If any registrant loses its investment grade rating, the maximum adders for prime rate borrowings and SOFR-based rate borrowings would be 65 basis points and 165 basis points, respectively. The credit agreements also require the borrower to pay a facility fee based upon the aggregate commitments. The fee varies depending upon the respective credit ratings of the borrower. Exelon Corporate and the Utility Registrants had no outstanding amounts on the revolving credit facilities as of December 31, 2024. Short-Term Loan Agreements On March 23, 2017, Exelon Corporate entered into a term loan agreement for $500 million. The loan agreement was renewed in the first quarter of 2024 and was bifurcated into two tranches of $350 million and $150 million on March 14, 2024. The agreements will expire on March 14, 2025. Pursuant to the loan agreements, loans made thereunder bear interest at a variable rate equal to SOFR plus 1.05% and all indebtedness thereunder is unsecured. The loan agreement is reflected in Exelon's Consolidated Balance Sheets within Short-term borrowings. On May 9, 2023, ComEd entered into a 364-day term loan agreement for $400 million with a variable rate equal to SOFR plus 1.00% and an expiration date of May 7, 2024. On May 1, 2024, ComEd entered into an agreement to extend the loan through the expiration date of June 28, 2024. The original proceeds from the loan were used to repay outstanding commercial paper obligations and for general corporate purposes. The balance of the loan was repaid on May 16, 2024. Variable Rate Demand Bonds DPL has outstanding obligations in respect of Variable Rate Demand Bonds (VRDB). VRDBs are subject to repayment on the demand of the holders and, for this reason, are accounted for as short-term debt in accordance with GAAP. However, these bonds may be converted to a fixed-rate, fixed-term option to establish a maturity which corresponds to the date of final maturity of the bonds. On this basis, PHI views VRDBs as a source of long-term financing. As of December 31, 2024 and December 31, 2023, $46 million and $79 million in variable rate demand bonds issued by DPL were outstanding and are included in the Long-term debt due within one year in Exelon's, PHI's, and DPL's Consolidated Balance Sheets. Long-Term Debt The following tables present the outstanding long-term debt at the Registrants at December 31, 2024 and 2023: Exelon Maturity December 31, Rates 2024 2023 Long-term debt First mortgage bonds (a) 1.05 % - 7.90 % 2025 - 2054 $ 26,451 $ 24,776 Senior unsecured notes 2.75 % - 7.60 % 2025 - 2053 12,280 10,824 Unsecured notes 2.25 % - 6.35 % 2026 - 2054 5,450 4,650 Notes payable and other 1.64 % - 7.49 % 2025 - 2053 83 84 Long-term software licensing agreement 2.30 % - 2.30 % 2025 4 12 Unsecured tax-exempt bonds 4.15 % - 4.20 % 2024 — 33 Medium-terms notes (unsecured) 7.72 % 2027 10 10 Loan agreement (b) 6.23 % 2024 — 500 Total long-term debt 44,278 40,889 Unamortized debt discount and premium, net (94) (80) Unamortized debt issuance costs (326) (296) Fair value adjustment 542 582 Long-term debt due within one year (1,453) (1,403) Long-term debt $ 42,947 $ 39,692 Long-term debt to financing trusts (c) Subordinated debentures to ComEd Financing III 6.35 % 2033 $ 206 $ 206 Subordinated debentures to PECO Trust III 7.38 % - 9.50 % 2028 81 81 Subordinated debentures to PECO Trust IV 5.75 % 2033 103 103 Total long-term debt to financing trusts $ 390 $ 390 __________ (a) Substantially all of ComEd’s assets other than expressly excluded property and substantially all of PECO’s, Pepco's, DPL's, and ACE's assets are subject to the liens of their respective mortgage indentures. (b) Pursuant to the loan agreement, loans made thereunder bear interest at a variable rate equal to SOFR plus 0.85%. (c) Amounts owed to these financing trusts are recorded as Long-term debt to financing trusts within Exelon’s Consolidated Balance Sheets. ComEd Maturity December 31, Rates 2024 2023 Long-term debt First mortgage bonds (a) 2.20 % - 6.45 % 2026 - 2054 $ 12,154 $ 11,603 Other 7.49 % 2053 8 8 Total long-term debt 12,162 11,611 Unamortized debt discount and premium, net (31) (28) Unamortized debt issuance costs (101) (97) Long-term debt due within one year — (250) Long-term debt $ 12,030 $ 11,236 Long-term debt to financing trust (b) Subordinated debentures to ComEd Financing III 6.35 % 2033 $ 206 $ 206 Total long-term debt to financing trusts 206 206 Unamortized debt issuance costs — (1) Long-term debt to financing trusts $ 206 $ 205 __________ (a) Substantially all of ComEd’s assets, other than expressly excluded property, are subject to the lien of its mortgage indenture. (b) Amount owed to this financing trust is recorded as Long-term debt to financing trust within ComEd’s Consolidated Balance Sheets. PECO Maturity December 31, Rates 2024 2023 Long-term debt First mortgage bonds (a) 2.80 % - 5.95 % 2025 - 2054 $ 5,775 $ 5,200 Total long-term debt 5,775 5,200 Unamortized debt discount and premium, net (25) (24) Unamortized debt issuance costs (46) (42) Long-term debt due within one year (350) — Long-term debt $ 5,354 $ 5,134 Long-term debt to financing trusts (b) Subordinated debentures to PECO Trust III 7.38 % - 9.50 % 2028 $ 81 $ 81 Subordinated debentures to PECO Trust IV 5.75 % 2033 103 103 Long-term debt to financing trusts $ 184 $ 184 __________ (a) Substantially all of PECO’s assets are subject to the lien of its mortgage indenture. (b) Amounts owed to this financing trust are recorded as Long-term debt to financing trusts within PECO’s Consolidated Balance Sheets. BGE Maturity December 31, Rates 2024 2023 Long-term debt Unsecured notes 2.25 % - 6.35 % 2026 - 2054 $ 5,450 $ 4,650 Total long-term debt 5,450 4,650 Unamortized debt discount and premium, net (13) (12) Unamortized debt issuance costs (42) (36) Long-term debt due within one year — — Long-term debt $ 5,395 $ 4,602 PHI Maturity December 31, Rates 2024 2023 Long-term debt First mortgage bonds (a) 1.05 % - 7.90 % 2025 - 2054 $ 8,522 $ 7,972 Senior unsecured notes 7.45 % 2032 185 185 Unsecured tax-exempt bonds 4.15 % - 4.20 % 2024 — 33 Medium-terms notes (unsecured) 7.72 % 2027 10 10 Finance leases 5.62 % 2025 - 2032 75 74 Total long-term debt 8,792 8,274 Unamortized debt discount and premium, net (2) — Unamortized debt issuance costs (66) (55) Fair value adjustment 400 429 Long-term debt due within one year (290) (644) Long-term debt $ 8,834 $ 8,004 _________ (a) Substantially all of Pepco's, DPL's, and ACE's assets are subject to the liens of their respective mortgage indentures. Pepco Maturity December 31, Rates 2024 2023 Long-term debt First mortgage bonds (a) 2.32 % - 7.90 % 2029 - 2054 $ 4,400 $ 4,125 Finance leases 5.62 % 2025 - 2032 27 26 Total long-term debt 4,427 4,151 Unamortized debt discount and premium, net — 2 Unamortized debt issuance costs (65) (57) Long-term debt due within one year (6) (405) Long-term debt $ 4,356 $ 3,691 ________ (a) Substantially all of Pepco's assets are subject to the lien of its mortgage indenture. DPL Maturity December 31, Rates 2024 2023 Long-term debt First mortgage bonds (a) 1.05 % - 5.72 % 2025 - 2054 $ 2,198 $ 2,024 Unsecured tax-exempt bonds 4.15 % - 4.20 % 2024 — 33 Medium-terms notes (unsecured) 7.72 % 2027 10 10 Finance leases 5.62 % 2025 - 2032 28 29 Total long-term debt 2,236 2,096 Unamortized debt issuance costs (16) (16) Long-term debt due within one year (130) (84) Long-term debt $ 2,090 $ 1,996 __________ (a) Substantially all of DPL's assets are subject to the lien of its mortgage indenture. ACE Maturity December 31, Rates 2024 2023 Long-term debt First mortgage bonds (a) 2.25 % - 5.80 % 2025 - 2054 $ 1,923 $ 1,823 Finance leases 5.62 % 2025 - 2032 20 19 Total long-term debt 1,943 1,842 Unamortized debt issuance costs (10) (9) Long-term debt due within one year (154) (154) Long-term debt $ 1,779 $ 1,679 __________ (a) Substantially all of ACE's assets are subject to the lien of its mortgage indenture. Long-term debt maturities at the Registrants in the periods 2025 through 2029 and thereafter are as follows: Year Exelon ComEd PECO BGE PHI Pepco DPL ACE 2025 $ 1,453 $ — $ 350 $ — $ 290 $ 6 $ 130 $ 154 2026 1,618 500 — 350 19 7 7 5 2027 1,025 350 — — 25 5 16 4 2028 1,992 550 81 — 361 4 4 353 2029 930 — — — 281 153 3 125 Thereafter 37,650 (a) 10,968 (b) 5,528 (c) 5,100 7,816 4,252 2,076 1,302 Total $ 44,668 $ 12,368 $ 5,959 $ 5,450 $ 8,792 $ 4,427 $ 2,236 $ 1,943 __________ (a) Includes $390 million due to ComEd and PECO financing trusts. (b) Includes $206 million due to ComEd financing trust. (c) Includes $184 million due to PECO financing trusts. Debt Extinguishment During the twelve months ended December 31, 2024, Exelon repurchased a portion of its Senior unsecured notes with a principal balance of $244 million outstanding in exchange for cash of $215 million. The repurchase was accounted for as a debt extinguishment and resulted in a pre-tax gain of $28 million, which is reflected on Exelon's Consolidated Statement of Operations and Comprehensive income within Interest expense, net. Debt Covenants As of December 31, 2024, the Registrants are in compliance with debt covenants.

Fair Value of Financial Assets

Fair Value of Financial Assets and Liabilities (All Registrants)	12 Months Ended
	Dec. 31, 2024
Fair Value Disclosures [Abstract]
Fair Value of Financial Assets and Liabilities (All Registrants)	Fair Value of Financial Assets and Liabilities (All Registrants) Exelon measures and classifies fair value measurements in accordance with the hierarchy as defined by GAAP. The hierarchy prioritizes the inputs to valuation techniques used to measure fair value into three levels as follows: • Level 1 — quoted prices (unadjusted) in active markets for identical assets or liabilities that the Registrants have the ability to liquidate as of the reporting date. • Level 2 — inputs other than quoted prices included within Level 1 that are directly observable for the asset or liability or indirectly observable through corroboration with observable market data. • Level 3 — unobservable inputs, such as internally developed pricing models or third-party valuations for the asset or liability due to little or no market activity for the asset or liability. Fair Value of Financial Liabilities Recorded at Amortized Cost The following tables present the carrying amounts and fair values of the Registrants’ short-term liabilities, long-term debt, and trust preferred securities (long-term debt to financing trusts or junior subordinated debentures) at December 31, 2024 and 2023. The Registrants have no financial liabilities classified as Level 1 or measured using the NAV practical expedient. The carrying amounts of the Registrants’ short-term liabilities as presented in their Consolidated Balance Sheets are representative of their fair value (Level 2) because of the short-term nature of these instruments. December 31, 2024 December 31, 2023 Carrying Amount Fair Value Carrying Amount Fair Value Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Long-Term Debt, including amounts due within one year (a) Exelon $ 44,400 $ — $ 35,337 $ 3,720 $ 39,057 $ 41,095 $ — $ 33,804 $ 3,442 $ 37,246 ComEd 12,030 — 10,260 — 10,260 11,486 — 10,210 — 10,210 PECO 5,704 — 4,816 — 4,816 5,134 — 4,562 — 4,562 BGE 5,395 — 4,702 — 4,702 4,602 — 4,145 — 4,145 PHI 9,124 — 4,093 3,720 7,813 8,648 — 4,160 3,442 7,602 Pepco 4,362 — 2,475 1,544 4,019 4,096 — 2,311 1,600 3,911 DPL 2,220 — 623 1,250 1,873 2,080 — 694 1,134 1,828 ACE 1,933 — 787 925 1,712 1,833 — 939 708 1,647 Long-Term Debt to Financing Trusts Exelon $ 390 $ — $ — $ 396 $ 396 $ 390 $ — $ — $ 390 $ 390 ComEd 206 — — 208 208 205 — — 208 208 PECO 184 — — 188 188 184 — — 182 182 __________ (a) Includes unamortized debt issuance costs, unamortized debt discount and premium, net, purchase accounting fair value adjustments, and finance lease liabilities which are not fair valued. Refer to Note 16 — Debt and Credit Agreements for unamortized debt issuance costs, unamortized debt discount and premium, net, and purchase accounting fair value adjustments and Note 10 — Leases for finance lease liabilities. Exelon uses the following methods and assumptions to estimate fair value of financial liabilities recorded at carrying cost: Type Level Registrants Valuation Long-Term Debt, including amounts due within one year Taxable Debt Securities 2 All The fair value is determined by a valuation model that is based on a conventional discounted cash flow methodology and utilizes assumptions of current market pricing curves. Exelon obtains credit spreads based on trades of existing Exelon debt securities as well as other issuers in the utility sector with similar credit ratings. The yields are then converted into discount rates of various tenors that are used for discounting the respective cash flows of the same tenor for each bond or note. Variable Rate Financing Debt 2 Exelon, DPL Debt rates are reset on a regular basis and the carrying value approximates fair value. Non-Government Backed Fixed Rate Nonrecourse Debt 2 Exelon Fair value is based on market and quoted prices for its own and other nonrecourse debt with similar risk profiles. Given the low trading volume in the nonrecourse debt market, the price quotes used to determine fair value will reflect certain qualitative factors, such as market conditions, investor demand, new developments that might significantly impact the project cash flows or off-taker credit, and other circumstances related to the project. Taxable Private Placement Debt Securities 3 Exelon, Pepco, DPL, ACE Rates are obtained similar to the process for taxable debt securities. Due to low trading volume and qualitative factors such as market conditions, low volume of investors, and investor demand, these debt securities are Level 3. Long-Term Debt to Financing Trusts Long Term Debt to Financing Trusts 3 Exelon, ComEd, PECO Fair value is based on publicly traded securities issued by the financing trusts. Due to low trading volume of these securities and qualitative factors, such as market conditions, investor demand, and circumstances related to each issue, this debt is classified as Level 3. Recurring Fair Value Measurements The following tables present assets and liabilities measured and recorded at fair value in the Registrants' Consolidated Balance Sheets on a recurring basis and their level within the fair value hierarchy at December 31, 2024 and 2023. Exelon and the Utility Registrants have immaterial and no financial assets or liabilities measured using the NAV practical expedient, respectively: Exelon At December 31, 2024 At December 31, 2023 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Assets Cash equivalents (a) $ 544 $ — $ — $ 544 $ 618 $ — $ — $ 618 Rabbi trust investments Cash equivalents 94 — — 94 67 — — 67 Mutual funds 65 — — 65 53 — — 53 Fixed income — 6 — 6 — 7 — 7 Life insurance contracts — 73 22 95 — 61 43 104 Rabbi trust investments subtotal 159 79 22 260 120 68 43 231 Interest rate derivative assets Derivatives designated as hedging instruments — 26 — 26 — 11 — 11 Economic hedges — — — — — 1 — 1 Interest rate derivative assets subtotal — 26 — 26 — 12 — 12 Total assets 703 105 22 830 738 80 43 861 Liabilities Commodity derivative liabilities — — (132) (132) — — (133) (133) Interest rate derivative liabilities Derivatives designated as hedging instruments — (1) — (1) — (24) — (24) Economic hedges — — — — — (22) — (22) Interest rate derivative liabilities subtotal — (1) — (1) — (46) — (46) Deferred compensation obligation — (74) — (74) — (75) — (75) Total liabilities — (75) (132) (207) — (121) (133) (254) Total net assets (liabilities) $ 703 $ 30 $ (110) $ 623 $ 738 $ (41) $ (90) $ 607 __________ (a) Excludes cash of $219 million and $334 million at December 31, 2024 and 2023, respectively, and restricted cash of $176 million and $149 million at December 31, 2024 and 2023, respectively, and includes long-term restricted cash of $41 million and $174 million at December 31, 2024 and 2023, respectively, which is reported in Other deferred debits in the Consolidated Balance Sheets. ComEd, PECO, and BGE ComEd PECO BGE At December 31, 2024 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Assets Cash equivalents (a) $ 390 $ — $ — $ 390 $ 29 $ — $ — $ 29 $ 1 $ — $ — $ 1 Rabbi trust investments Mutual funds — — — — 12 — — 12 10 — — 10 Life insurance contracts — — — — — 22 — 22 — — — — Rabbi trust investments subtotal — — — — 12 22 — 34 10 — — 10 Total assets 390 — — 390 41 22 — 63 11 — — 11 Liabilities Commodity derivative liabilities (b) — — (132) (132) — — — — — — — — Deferred compensation obligation — (8) — (8) — (7) — (7) — (4) — (4) Total liabilities — (8) (132) (140) — (7) — (7) — (4) — (4) Total net assets (liabilities) $ 390 $ (8) $ (132) $ 250 $ 41 $ 15 $ — $ 56 $ 11 $ (4) $ — $ 7 ComEd PECO BGE At December 31, 2023 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Assets Cash equivalents (a) $ 453 $ — $ — $ 453 $ 9 $ — $ — $ 9 $ — $ — $ — $ — Rabbi trust investments Mutual funds — — — — 9 — — 9 9 — — 9 Life insurance contracts — — — — — 18 — 18 — — — — Rabbi trust investments subtotal — — — — 9 18 — 27 9 — — 9 Total assets 453 — — 453 18 18 — 36 9 — — 9 Liabilities Commodity derivative liabilities (b) — — (133) (133) — — — — — — — — Deferred compensation obligation — (8) — (8) — (8) — (8) — (4) — (4) Total liabilities — (8) (133) (141) — (8) — (8) — (4) — (4) Total net assets (liabilities) $ 453 $ (8) $ (133) $ 312 $ 18 $ 10 $ — $ 28 $ 9 $ (4) $ — $ 5 __________ (a) ComEd excludes cash of $66 million and $86 million at December 31, 2024 and 2023, respectively, and restricted cash of $176 million and $147 million at December 31, 2024 and 2023, respectively, and includes long-term restricted cash of $41 million and $174 million at December 31, 2024 and 2023, respectively, which is reported in Other deferred debits in the Consolidated Balance Sheets. PECO excludes cash of $19 million and $42 million at December 31, 2024 and 2023, respectively. BGE excludes cash of $33 million and $47 million at December 31, 2024 and 2023, respectively, and restricted cash of zero and $1 million at December 31, 2024 and 2023, respectively. (b) The Level 3 balance consists of the current and noncurrent liability of $29 million and $103 million, respectively, at December 31, 2024, and $27 million and $106 million, respectively, at December 31, 2023 related to floating-to-fixed energy swap contracts with unaffiliated suppliers. PHI, Pepco, DPL, and ACE At December 31, 2024 At December 31, 2023 PHI Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Assets Cash equivalents (a) $ 93 $ — $ — $ 93 $ 107 $ — $ — $ 107 Rabbi trust investments Cash equivalents 92 — — 92 64 — — 64 Mutual funds 9 — — 9 9 — — 9 Fixed income — 6 — 6 — 7 — 7 Life insurance contracts — 23 21 44 — 21 41 62 Rabbi trust investments subtotal 101 29 21 151 73 28 41 142 Total assets 194 29 21 244 180 28 41 249 Liabilities Deferred compensation obligation — (12) — (12) — (13) — (13) Total liabilities — (12) — (12) — (13) — (13) Total net assets $ 194 $ 17 $ 21 $ 232 $ 180 $ 15 $ 41 $ 236 Pepco DPL ACE At December 31, 2024 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Assets Cash equivalents (a) $ 21 $ — $ — $ 21 $ 3 $ — $ — $ 3 $ — $ — $ — $ — Rabbi trust investments Cash equivalents 91 — — 91 — — — — — — — — Life insurance contracts — 23 21 44 — — — — — — — — Rabbi trust investments subtotal 91 23 21 135 — — — — — — — — Total assets 112 23 21 156 3 — — 3 — — — — Liabilities Deferred compensation obligation — (1) — (1) — — — — — — — — Total liabilities — (1) — (1) — — — — — — — — Total net assets $ 112 $ 22 $ 21 $ 155 $ 3 $ — $ — $ 3 $ — $ — $ — $ — Pepco DPL ACE At December 31, 2023 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Assets Cash equivalents (a) $ 23 $ — $ — $ 23 $ 1 $ — $ — $ 1 $ — $ — $ — $ — Rabbi trust investments Cash equivalents 63 — — 63 — — — — — — — — Life insurance contracts — 21 41 62 — — — — — — — — Rabbi trust investments subtotal 63 21 41 125 — — — — — — — — Total assets 86 21 41 148 1 — — 1 — — — — Liabilities Deferred compensation obligation — (1) — (1) — — — — — — — — Total liabilities — (1) — (1) — — — — — — — — Total net assets $ 86 $ 20 $ 41 $ 147 $ 1 $ — $ — $ 1 $ — $ — $ — $ — __________ (a) PHI excludes cash of $70 million and $96 million at December 31, 2024 and 2023, respectively, and restricted cash of zero and $1 million at December 31, 2024 and 2023, respectively. Pepco excludes cash of $30 million and $48 million at December 31, 2024 and 2023, respectively, and restricted cash of zero and $1 million at December 31, 2024 and 2023, respectively. DPL excludes cash of $20 million and $15 million at December 31, 2024 and 2023, respectively. ACE excludes cash of $14 million and $21 million at December 31, 2024 and 2023, respectively. Reconciliation of Level 3 Assets and Liabilities The following tables present the fair value reconciliation of Level 3 assets and liabilities measured at fair value on a recurring basis during the years ended December 31, 2024 and 2023: Exelon ComEd PHI and Pepco For the year ended December 31, 2024 Total Commodity Life Insurance Contracts Balance at December 31, 2023 $ (90) $ (133) $ 41 Total realized / unrealized gains (losses) Included in net income (a) 1 — 2 Included in regulatory assets/liabilities 1 1 (b) — Purchases, sales, and settlements Settlements (22) — (22) Balance at December 31, 2024 $ (110) $ (132) (c) $ 21 The amount of total gains included in income attributed to the change in unrealized gains (losses) related to assets and liabilities as of December 31, 2024 $ 1 $ — $ 2 Exelon ComEd PHI and Pepco For the year ended December 31, 2023 Total Commodity Life Insurance Contracts Balance at December 31, 2022 $ (44) $ (84) $ 40 Total realized / unrealized gains (losses) Included in net income (a) 3 — 1 Included in regulatory assets/liabilities (49) (49) (b) — Balance at December 31, 2023 $ (90) $ (133) (c) $ 41 The amount of total gains included in income attributed to the change in unrealized gains (losses) related to assets and liabilities as of December 31, 2023 $ 3 $ — $ 1 __________ (a) Classified in Operating and maintenance expense in the Consolidated Statements of Operations and Comprehensive Income. (b) Includes $40 million of decreases in fair value and an increase for realized gains due to settlements of $40 million recorded in Purchased power expense associated with floating-to-fixed energy swap contracts with unaffiliated suppliers for the year ended December 31, 2024. Includes $83 million of decreases in fair value and an increase for realized gains due to settlements of $34 million recorded in Purchased power expense associated with floating-to-fixed energy swap contracts with unaffiliated suppliers for the year ended December 31, 2023. (c) The balance of the current and noncurrent asset was effectively zero as of December 31, 2024. The balance consists of a current and noncurrent liability of $29 million and $103 million, respectively, as of December 31, 2024. Valuation Techniques Used to Determine Fair Value Cash Equivalents (All Registrants). Investments with original maturities of three months or less when purchased, including mutual and money market funds, are considered cash equivalents. The fair values are based on observable market prices and, therefore, are included in the recurring fair value measurements hierarchy as Level 1. Rabbi Trust Investments (Exelon, PECO, BGE, PHI, Pepco, DPL, and ACE). The Rabbi trusts were established to hold assets related to deferred compensation plans existing for certain active and retired members of Exelon’s executive management and directors. The Rabbi trusts' assets are included in Investments in the Registrants’ Consolidated Balance Sheets and consist primarily of money market funds, mutual funds, fixed income securities, and life insurance policies. Money market funds and mutual funds are publicly quoted and have been categorized as Level 1 given the clear observability of the prices. The fair values of fixed income securities are based on evaluated prices that reflect observable market information, such as actual trade information or similar securities, adjusted for observable differences and are categorized in Level 2. The life insurance policies are valued using the cash surrender value of the policies, net of loans against those policies, which is provided by a third-party. Certain life insurance policies, which consist primarily of mutual funds that are priced based on observable market data, have been categorized as Level 2 because the life insurance policies can be liquidated at the reporting date for the value of the underlying assets. Life insurance policies that are valued using unobservable inputs have been categorized as Level 3, where the fair value is determined based on the cash surrender value of the policy, which contains unobservable inputs and assumptions. Because Exelon relies on its third-party insurance provider to develop the inputs without adjustment for the valuations of its Level 3 investments, quantitative information about significant unobservable inputs used in valuing these investments is not reasonably available to Exelon. Therefore, Exelon has not disclosed such inputs. Interest Rate Derivatives (Exelon) Exelon may utilize fixed-to-floating or floating-to-fixed interest rate swaps as a means to manage interest rate risk. These interest rate swaps are typically accounted for as economic hedges. In addition, Exelon may utilize interest rate derivatives to lock in interest rate levels in anticipation of future financings. These interest rate derivatives are typically designated as cash flow hedges. Exelon determines the current fair value by calculating the net present value of expected payments and receipts under the swap agreement, based on and discounted by the market's expectation of future interest rates. Additional inputs to the net present value calculation may include the contract terms, counterparty credit risk and other market parameters. As these inputs are based on observable data and valuations of similar instruments, the interest rate swaps are categorized as Level 2 in the fair value hierarchy. See Note 15 — Derivative Financial Instruments for additional information on mark-to-market derivatives. Deferred Compensation Obligations (All Registrants). The Registrants’ deferred compensation plans allow participants to defer certain cash compensation into a notional investment account. The Registrants include such plans in other current and noncurrent liabilities in their Consolidated Balance Sheets. The value of the Registrants’ deferred compensation obligations is based on the market value of the participants’ notional investment accounts. The underlying notional investments are comprised primarily of equities, mutual funds, commingled funds, and fixed income securities which are based on directly and indirectly observable market prices. Since the deferred compensation obligations themselves are not exchanged in an active market, they are categorized as Level 2 in the fair value hierarchy. The value of certain employment agreement obligations (which are included with the Deferred Compensation Obligation in the tables above) are based on a known and certain stream of payments to be made over time and are categorized as Level 2 within the fair value hierarchy. Commodity Derivatives (Exelon and ComEd). On December 17, 2010, ComEd entered into several 20-year floating to fixed energy swap contracts with unaffiliated suppliers for the procurement of long-term renewable energy and associated RECs. Delivery under the contracts began in June 2012. The fair value of these swaps has been designated as a Level 3 valuation due to the long tenure of the positions and the internal modeling assumptions. The modeling assumptions include using forward power prices. See Note 15 — Derivative Financial Instruments for additional information on mark-to-market derivatives. The following table discloses the significant unobservable inputs to the forward curve used to value mark-to-market derivatives: Type of trade Fair Value as of December 31, 2024 Fair Value as of December 31, 2023 Valuation Unobservable 2024 Range & Arithmetic Average 2023 Range & Arithmetic Average Commodity derivatives $ (132) $ (133) Discounted Cash Flow Forward power price (a) $ 30.31 - $ 59.88 $ 42.08 $ 30.27 - $ 73.71 $ 43.35 __________ (a) An increase to the forward power price would increase the fair value.

Commitments and Contingencies (

Commitments and Contingencies (All Registrants)	12 Months Ended
	Dec. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies (All Registrants)	Commitments and Contingencies (All Registrants) Commitments PHI Merger Commitments (Exelon, PHI, Pepco, DPL, and ACE). Approval of the PHI Merger in Delaware, New Jersey, Maryland, and the District of Columbia was conditioned upon Exelon and PHI agreeing to certain commitments. The following amounts represent total commitment costs that have been recorded since the acquisition date and the total remaining obligations for Exelon, PHI, Pepco, DPL, and ACE at December 31, 2024: Description Exelon PHI Pepco DPL ACE Total commitments $ 513 $ 320 $ 120 $ 89 $ 111 Remaining commitments (a) 27 24 23 1 — __________ (a) Remaining commitments extend through 2026 and include escrow funds, charitable contributions, and rate credits. Commercial Commitments (All Registrants). The Registrants' commercial commitments at December 31, 2024, representing commitments potentially triggered by future events were as follows: Expiration within Exelon Total 2025 2026 2027 2028 2029 2030 and beyond Letters of credit (a) $ 55 $ 53 $ 2 $ — $ — $ — $ — Surety bonds (b) 274 194 — 2 78 — — Financing trust guarantees (c) 378 — — — 78 — 300 Guaranteed lease residual values (d) 26 — 5 4 6 4 7 Total commercial commitments $ 733 $ 247 $ 7 $ 6 $ 162 $ 4 $ 307 ComEd Letters of credit (a) $ 18 $ 16 $ 2 $ — $ — $ — $ — Surety bonds (b) 36 34 — 2 — — — Financing trust guarantees (c) 200 — — — — — 200 Total commercial commitments $ 254 $ 50 $ 2 $ 2 $ — $ — $ 200 PECO Letters of credit (a) $ 4 $ 4 $ — $ — $ — $ — $ — Surety bonds (b) 2 2 — — — — — Financing trust guarantees (c) 178 — — — 78 — 100 Total commercial commitments $ 184 $ 6 $ — $ — $ 78 $ — $ 100 BGE Letters of credit (a) $ 27 $ 27 $ — $ — $ — $ — $ — Surety bonds (b) 3 3 — — — — — Total commercial commitments $ 30 $ 30 $ — $ — $ — $ — $ — PHI Letters of credit (a) $ 3 $ 3 $ — $ — $ — $ — $ — Surety bonds (b) 174 96 — — 78 — — Guaranteed lease residual values (d) 26 — 5 4 6 4 7 Total commercial commitments $ 203 $ 99 $ 5 $ 4 $ 84 $ 4 $ 7 Pepco Letters of credit (a) $ 2 $ 2 $ — $ — $ — $ — $ — Surety bonds (b) 163 85 — — 78 — — Guaranteed lease residual values (d) 9 — 2 1 2 1 3 Total commercial commitments $ 174 $ 87 $ 2 $ 1 $ 80 $ 1 $ 3 DPL Letters of credit (a) $ 1 $ 1 $ — $ — $ — $ — $ — Surety bonds (b) 6 6 — — — — — Guaranteed lease residual values (d) 10 — 2 2 2 2 2 Total commercial commitments $ 17 $ 7 $ 2 $ 2 $ 2 $ 2 $ 2 ACE Surety bonds (b) $ 5 $ 5 $ — $ — $ — $ — $ — Guaranteed lease residual values (d) 7 — 1 1 2 1 2 Total commercial commitments $ 12 $ 5 $ 1 $ 1 $ 2 $ 1 $ 2 __________ (a) Exelon and certain of its subsidiaries maintain non-debt letters of credit to provide credit support for certain transactions as requested by third parties. (b) Surety bonds—Guarantees issued related to contract and commercial agreements, excluding bid bonds. Historically, payments under the guarantees have not been made and the likelihood of payments being required is remote. (c) Reflects guarantee of ComEd and PECO securities held by ComEd Financing III, PECO Trust III, and PECO Trust IV. (d) Represents the maximum potential obligation in the event the fair value of certain leased equipment and fleet vehicles is zero at the end of the maximum lease term. The lease term associated with these assets ranges from 1 to 8 years. The maximum potential obligation at the end of the minimum lease term would be $60 million guaranteed by Exelon and PHI, of which $20 million , $23 million, and $17 million is guaranteed by Pepco, DPL, and ACE, respectively. Historically, payments under the guarantees have not been made and PHI believes the likelihood of payments being required under the guarantees is remote. Environmental Remediation Matters General (All Registrants). The Registrants’ operations have in the past, and may in the future, require substantial expenditures to comply with environmental laws. Additionally, under federal and state environmental laws, the Registrants are generally liable for the costs of remediating environmental contamination of property now or formerly owned by them and of property contaminated by hazardous substances generated by them. The Registrants own or lease a number of real estate parcels, including parcels on which their operations or the operations of others may have resulted in contamination by substances that are considered hazardous under environmental laws. In addition, the Registrants are currently involved in a number of proceedings relating to sites where hazardous substances have been deposited and may be subject to additional proceedings in the future. Unless otherwise disclosed, the Registrants cannot reasonably estimate whether they will incur significant liabilities for additional investigation and remediation costs at these or additional sites identified by the Registrants, environmental agencies, or others, or whether such costs will be recoverable from third parties, including customers. Additional costs could have a material, unfavorable impact on the Registrants' financial statements. MGP Sites (All Registrants). ComEd, PECO, BGE, and DPL have identified sites where former MGP or gas purification activities have or may have resulted in actual site contamination. For some sites, there are additional PRPs that may share responsibility for the ultimate remediation of each location. • ComEd has 16 sites currently under some degree of active study and/or remediation. ComEd expects the majority of the remediation at these sites to continue through at least 2031. • PECO has 6 sites currently under some degree of active study and/or remediation. PECO expects the majority of the remediation at these sites to continue through at least 2027. • BGE has 4 sites currently requiring some level of remediation and/or ongoing activity. BGE expects the majority of the remediation at these sites to continue through at least 2025. • DPL has 1 site currently under study and the required cost at the site is not expected to be material. The historical nature of the MGP and gas purification sites, and the fact that many of the sites have been buried and built over, impacts the ability to determine a precise estimate of the ultimate costs prior to initial sampling and determination of the exact scope and method of remedial activity. Management determines its best estimate of remediation costs using all available information at the time of each study, including probabilistic and deterministic modeling for ComEd and PECO, and the remediation standards currently required by the applicable state environmental agency. Prior to completion of any significant clean up, each site remediation plan is approved by the appropriate state environmental agency. ComEd, pursuant to an ICC order, and PECO, pursuant to a PAPUC order, are currently recovering environmental remediation costs of former MGP facility sites through customer rates. While BGE and DPL do not have riders for MGP clean-up costs, they have historically received recovery of actual clean-up costs in distribution rates. In 2024, ComEd and PECO completed an annual study of their future estimated MGP remediation requirements. The study resulted in increases of $13 million and $4 million to the environmental liability and related Regulatory asset for ComEd and PECO, respectively. The increases were primarily due to increased costs resulting from inflation and changes in remediation plans. At December 31, 2024 and 2023, the Registrants had accrued the following undiscounted amounts for environmental liabilities in Accrued expenses, Other current liabilities, and Other deferred credits and other liabilities in their respective Consolidated Balance Sheets: December 31, 2024 December 31, 2023 Total Environmental Portion of Total Related to Total Environmental Portion of Total Related to Exelon $ 403 $ 322 $ 428 $ 338 ComEd 285 284 303 302 PECO 29 28 27 25 BGE 13 10 14 11 PHI 75 — 81 — Pepco 73 — 79 — DPL 1 — 1 — ACE 1 — 1 — Benning Road Site (Exelon, PHI, and Pepco). In September 2010, PHI received a letter from the EPA identifying the Benning Road site as one of six land-based sites potentially contributing to contamination of the lower Anacostia River. A portion of the site, which is owned by Pepco, was formerly the location of an electric generating facility owned by Pepco subsidiary, Pepco Energy Services (PES), which became a part of Generation following the 2016 merger between PHI and Exelon. This generating facility was deactivated in June 2012. The remaining portion of the site consists of a Pepco transmission and distribution service center that remains in operation. In December 2011, the U.S. District Court for the District of Columbia approved a Consent Decree entered into by Pepco and Pepco Energy Services (hereinafter "Pepco Entities") with the DOEE, which requires the Pepco Entities to conduct a Remedial Investigation and Feasibility Study (RI/FS) for the Benning Road site and an approximately 10 to 15-acre portion of the adjacent Anacostia River. The purpose of this RI/FS is to define the nature and extent of contamination from the Benning Road site and to evaluate remedial alternatives. Pursuant to an internal agreement between the Pepco Entities, since 2013, Pepco has performed the work required by the Consent Decree and has been reimbursed for that work by an agreed upon allocation of costs between the Pepco Entities. In September 2019, the Pepco Entities issued a draft “final” RI report which the DOEE approved on February 3, 2020. The Pepco Entities are completing a FS to evaluate possible remedial alternatives for submission to the DOEE. In October 2022, the DOEE approved dividing the work to complete the landside portion of the FS from the waterside portion to expedite the overall schedule for completion of the project. The landside FS was approved by the DOEE on March 15, 2024, and the waterside FS was approved by the DOEE on December 16, 2024. Following the completion of each FS, the DOEE will issue a Proposed Plan for public comment and then issue a Record of Decision (ROD) identifying the remedial actions determined to be necessary for the area in question. On October 3, 2023, the DOEE and Pepco entered into an addendum to the Benning Consent Decree pursuant to which Pepco has agreed to fund or perform the remedial actions to be selected by the DOEE for the landside and waterside areas. This addendum to the Benning Consent Decree was entered by the Court on February 27, 2024 and became effective on that date. As part of the separation between Exelon and Constellation in February 2022, the internal agreement between the Pepco Entities for completion and payment for the remaining Consent Decree work was memorialized in a formal agreement for post-separation activities. A second post-separation assumption agreement between Exelon and Constellation transferred any of the potential remaining remediation liability, if any, of PES/Generation to a non-utility subsidiary of Exelon which going forward will be responsible for those liabilities. Exelon, PHI, and Pepco have determined that a loss associated with this matter is probable and have accrued an estimated liability, which is included in the table above. Anacostia River Tidal Reach (Exelon, PHI, and Pepco). Contemporaneous with the Benning Road site RI/FS being performed by the Pepco Entities, the DOEE and NPS have been conducting a separate RI/FS focused on the entire tidal reach of the Anacostia River extending from just north of the Maryland-District of Columbia boundary line to the confluence of the Anacostia and Potomac Rivers. The riverwide RI incorporated the results of the river sampling performed by the Pepco Entities as part of the Benning RI/FS, as well as similar sampling efforts conducted by owners of other sites adjacent to this segment of the river and supplemental river sampling conducted by the DOEE’s contractor. On September 30, 2020, the DOEE released its Interim ROD for the Anacostia River sediments. The Interim ROD reflects an adaptive management approach which will require several identified “hot spots” in the river to be addressed first while continuing to conduct studies and to monitor the river to evaluate improvements and determine potential future remediation plans. The adaptive management process chosen by the DOEE is less intrusive, provides more long-term environmental certainty, is less costly, and allows for site specific remediation plans already underway, including the plan for the Benning Road site to proceed to conclusion. On July 15, 2022, Pepco received a letter from the District of Columbia's Office of the Attorney General (D.C. OAG) on behalf of the DOEE conveying a settlement offer to resolve all PRPs' liability to the District of Columbia (District) for their past costs and their anticipated future costs to complete the work for the Interim ROD. Pepco responded on July 27, 2022 agreeing to enter into settlement discussions. On October 3, 2023, Pepco and the District entered into another consent decree (the “Anacostia River Consent Decree”) pursuant to which Pepco agreed to pay $47 million to resolve its liability to the District for all past costs to perform the riverwide RI/FS and all future costs to complete the work required by the Interim ROD. This amount was agreed to be paid in four equal annual installments beginning a year after the effective date of the Anacostia River Consent Decree. The funds will be deposited into the DOEE’s Clean Land Fund for the District’s costs of the Interim ROD work. The Anacostia River Consent Decree caps Pepco’s liability for these costs and provides Pepco with the right to seek contributions from other PRPs. The Anacostia River Consent Decree was signed by the judge for the U.S. District Court for the District of Columbia and became effective on April 11, 2024. Exelon, PHI, and Pepco have accrued a liability for Pepco’s payment obligations under the Anacostia Consent Decree and management's best estimate of its share of any other future Anacostia River response costs. Pepco has concluded that incremental exposure remains reasonably possible, but management cannot reasonably estimate a range of loss beyond the amounts recorded, which are included in the table above. In addition to the activities associated with the remedial process outlined above, CERCLA separately requires federal and state (here including Washington, D.C.) Natural Resource Trustees (federal or state agencies designated by the President or the relevant state, respectively, or Indian tribes) to conduct an assessment of any damages to natural resources within their jurisdiction as a result of the contamination that is being remediated. The Trustees can seek compensation from responsible parties for such damages, including restoration costs. During the second quarter of 2018, Pepco became aware that the Trustees are in the beginning stages of a NRD assessment, a process that often takes many years beyond the remedial decision to complete. Pepco has concluded that a loss associated with the eventual NRD assessment is reasonably possible. Due to the early stage of the NRD process, Pepco cannot reasonably estimate the final range of loss potentially resulting from this process. Pepco has become aware, however, that the District is pursuing claims against other parties. Specifically, in January 2025, D.C. OAG filed a lawsuit against the United States seeking to declare the United States liable under CERCLA and the District of Columbia’s Brownfield Revitalization Act of 2000 and to recover the District’s response costs associated with its investigation and remediation of the river and for future NRDs. This lawsuit is in the early stages. Pepco is monitoring this lawsuit and considering its legal options. As noted in the Benning Road Site disclosure above, as part of the separation of Exelon and Constellation in February 2022, an assumption agreement was executed transferring any potential future remediation liabilities associated with the Benning Site remediation to a non-utility subsidiary of Exelon. Similarly, any potential future liability associated with the Anacostia River Sediment Project was also assumed by this entity. Buzzard Point Site (Exelon, PHI, and Pepco). On December 8, 2022, Pepco received a letter from the D.C. OAG, alleging wholly past violations of the District's stormwater discharge and waste disposal requirements related to operations at the Buzzard Point facility, a 9-acre parcel of waterfront property in Washington, D.C. occupied by an active substation and former steam plant building. The letter also alleged wholly past violations by Pepco of stormwater discharge requirements related to its district-wide system of underground vaults. On October 3, 2023, Pepco entered into a Consent Order with the District of Columbia to resolve the alleged violations without any admission of liability. The Consent Order requires Pepco to pay a civil penalty of $10 million. In addition, Pepco has agreed to assess the environmental conditions at its Buzzard Point facility and conduct any remedial actions deemed necessary as a result of the assessment, and also to assess potential environmental impacts associated with the operation of its underground vaults. The court signed and entered the Consent Order, and it became effective on February 2, 2024. Exelon, PHI, and Pepco have accrued a liability for the penalty payments and for the projected costs for the required environmental assessments and remediation. Pepco has concluded that incremental exposure remains reasonably possible, but management cannot reasonably estimate a range of loss beyond the amounts recorded, which are included in the table above. Litigation and Regulatory Matters Fund Transfer Restrictions (All Registrants). Under applicable law, Exelon may borrow or receive an extension of credit from its subsidiaries. Under the terms of Exelon’s intercompany money pool agreement, Exelon can lend to, but not borrow from the money pool. Under applicable law, ComEd, PECO, BGE, PHI, Pepco, DPL, and ACE can pay dividends only from retained, undistributed or current earnings. A significant loss recorded at ComEd, PECO, BGE, PHI, Pepco, DPL, or ACE may limit the dividends that these Registrants can distribute to Exelon. ComEd has agreed in connection with financings arranged through ComEd Financing III that it will not declare dividends on any shares of its capital stock in the event that: (1) it exercises its right to extend the interest payment periods on the subordinated debt securities issued to ComEd Financing III; (2) it defaults on its guarantee of the payment of distributions on the preferred trust securities of ComEd Financing III; or (3) an event of default occurs under the Indenture under which the subordinated debt securities are issued. No such event has occurred. PECO has agreed in connection with financings arranged through PEC L.P. and PECO Trust IV that PECO will not declare dividends on any shares of its capital stock in the event that: (1) it exercises its right to extend the interest payment periods on the subordinated debentures, which were issued to PEC L.P. or PECO Trust IV; (2) it defaults on its guarantee of the payment of distributions on the Series D Preferred Securities of PEC L.P. or the preferred trust securities of PECO Trust IV; or (3) an event of default occurs under the Indenture under which the subordinated debentures are issued. No such event has occurred. BGE is subject to restrictions established by the MDPSC that prohibit BGE from paying a dividend on its common shares if (a) after the dividend payment, BGE’s equity ratio would be below 48% as calculated pursuant to the MDPSC’s ratemaking precedents or (b) BGE’s senior unsecured credit rating is rated by two of the three major credit rating agencies below investment grade. No such event has occurred. Pepco is subject to certain dividend restrictions established by settlements approved by the MDPSC and DCPSC that prohibit Pepco from paying a dividend on its common shares if (a) after the dividend payment, Pepco's equity ratio would be below 48% as calculated pursuant to the MDPSC's and DCPSC's ratemaking precedents, of or (b) Pepco’s senior unsecured credit rating is rated by one of the three major credit rating agencies below investment grade. No such event has occurred. DPL is subject to certain dividend restrictions established by settlements approved by the DEPSC and MDPSC that prohibit DPL from paying a dividend on its common shares if (a) after the dividend payment, DPL's equity ratio would be below 48% as calculated pursuant to the DEPSC's and MDPSC's ratemaking precedents, or (b) DPL’s corporate issuer or senior unsecured credit rating, or its equivalent, is rated by any of the three major credit rating agencies below the generally accepted definition of investment grade. No such event has occurred. ACE is subject to certain dividend restrictions established by settlements approved by the NJBPU that prohibit ACE from paying a dividend on its common shares if (a) after the dividend payment, ACE's common equity ratio would be below 48% as calculated pursuant to the NJBPU's ratemaking precedents, or (b) ACE's senior corporate issuer or senior unsecured credit rating is rated by one of the three major credit rating agencies below investment grade. ACE is also subject to a dividend restriction which requires ACE to notify and obtain the prior approval of the NJBPU before dividends can be paid if its equity as a percent of its total capitalization, excluding securitization debt, falls below 30%. No such events have occurred. DPA and Related Matters (Exelon and ComEd). Exelon and ComEd received a grand jury subpoena in the second quarter of 2019 from the U.S. Attorney’s Office for the Northern District of Illinois (USAO) requiring production of information concerning their lobbying activities in the State of Illinois. On October 4, 2019, Exelon and ComEd received a second grand jury subpoena from the USAO requiring production of records of any communications with certain individuals and entities. On October 22, 2019, the SEC notified Exelon and ComEd that it had also opened an investigation into their lobbying activities. On July 17, 2020, ComEd entered into a DPA with the USAO to resolve the USAO investigation, which included a payment to the U.S. Treasury of $200 million, which was paid in November 2020. The three-year term of the DPA ended on July 17, 2023, and on that same date the court granted the USAO’s motion to dismiss the pending charge against ComEd that had been deferred by the DPA. On September 28, 2023, Exelon and ComEd reached a settlement with the SEC, concluding and resolving in its entirety the SEC investigation, which related to the conduct identified in the DPA that was entered into by ComEd in July 2020 and successfully exited in July 2023. Under the terms of the settlement, Exelon agreed to pay a civil penalty of $46.2 million and Exelon and ComEd agreed to cease and desist from committing or causing any violations and any future violations of specified provisions of the federal securities laws and rules promulgated thereunder. Exelon recorded an expense and paid the full amount of the penalty in 2023, which was reflected in Operating and maintenance expense within Exelon's Consolidated Statements of Operations and Comprehensive Income. Subsequent to Exelon announcing the receipt of the USAO subpoenas, various lawsuits were filed, and various demand letters were received related to the subject of the subpoenas, the conduct described in the DPA and the SEC's investigation, including: • Four putative class action lawsuits against ComEd and Exelon were filed in federal court on behalf of ComEd customers in the third quarter of 2020 alleging, among other things, civil violations of federal racketeering laws. The court granted ComEd and Exelon’s motion to dismiss these actions in 2021 and that dismissal was affirmed on appeal in 2022. Plaintiffs have no further appeal rights and therefore the dismissal is final. • Three putative class action lawsuits against ComEd and Exelon were filed in Illinois state court in the third quarter of 2020 seeking restitution and compensatory damages on behalf of ComEd customers. The cases were consolidated into a single action in October of 2020. In 2021, the plaintiffs that filed the class action lawsuits in federal court ("federal plaintiffs") refiled their dismissed state law claims in state court. ComEd and Exelon moved to dismiss both lawsuits. The court dismissed the original consolidated state court lawsuit in December 2021 and dismissed the federal plaintiffs' refiled claims in February 2022. Both sets of plaintiffs appealed their dismissals, and the appeals were consolidated in March 2022. On September 8, 2023, the appellate court affirmed the dismissals. On December 22, 2023, plaintiffs collectively filed a petition for leave to appeal to the Illinois Supreme Court, which ComEd and Exelon responded to on January 12, 2024. On March 27, 2024, the Illinois Supreme Court denied plaintiffs' petition for leave to appeal. The dismissal of this action is final. • On November 3, 2022, a plaintiff filed a putative class action complaint in Lake County, Illinois Circuit Court against ComEd and Exelon for unjust enrichment and deceptive business practices in connection with the conduct giving rise to the DPA. Plaintiff seeks an accounting and disgorgement of any benefits ComEd allegedly obtained from said conduct. ComEd and Exelon filed a motion to dismiss the Complaint on February 3, 2023. On June 16, 2023, the court granted ComEd and Exelon's motion to dismiss the action with prejudice. Plaintiff filed its notice of appeal of that dismissal on July 17, 2023. On April 12, 2024, the appellate court issued its decision affirming dismissal of the action. On June 3, 2024, plaintiff filed a petition for leave to appeal the dismissal to the Illinois Supreme Court, which is a discretionary appeal. ComEd and Exelon filed its response to that petition on July 19, 2024. On September 25, 2024, the Illinois Supreme Court denied plaintiff's petition for leave to appeal. The dismissal of this action is now final. • A putative class action lawsuit against Exelon and certain officers of Exelon and ComEd was filed in federal court in December 2019 alleging misrepresentations and omissions in Exelon’s SEC filings related to ComEd’s lobbying activities and the related investigations. The complaint was amended on September 16, 2020, to dismiss two of the original defendants and add other defendants, including ComEd. Defendants filed a motion to dismiss in November 2020. The court denied the motion in April 2021. Following mediation, the parties reached a settlement of the lawsuit, under which defendants agreed to pay plaintiffs $173 million. On May 26, 2023, plaintiffs filed a motion for preliminary approval of the settlement, which the court granted on June 9, 2023. The court granted final settlement approval on September 7, 2023. The settlement was fully covered by insurance and has been paid in full. • Several shareholders have sent letters to the Exelon Board of Directors since 2020 demanding, among other things, that the Exelon Board of Directors investigate and address alleged breaches of fiduciary duties and other alleged violations by Exelon and ComEd officers and directors related to the conduct described in the DPA. In the first quarter of 2021, the Exelon Board of Directors appointed a Special Litigation Committee (SLC) consisting of disinterested and independent parties to investigate and address these shareholders’ allegations and make recommendations to the Exelon Board of Directors based on the outcome of the SLC’s investigation. In July 2021, one of the demand letter shareholders filed a derivative action against current and former Exelon and ComEd officers and directors, and against Exelon, as nominal defendant, asserting the same claims made in its demand letter. Since that date, multiple parties have filed separate derivative lawsuits that were subsequently consolidated. On October 12, 2021, the parties filed an agreed motion to stay the litigation for 120 days in order to allow the SLC to continue its investigation, which the court granted. The stay was extended several times. Through mediation efforts, a settlement of the derivative claims was reached by the SLC, the Independent Review Committee of the Board (which had been formed in the third quarter of 2022, to ensure the Board’s consideration of any SLC recommendations would be independent and objective), the Board, and certain of the derivative shareholders. On June 16, 2023, the SLC filed a motion for preliminary approval of the settlement, attaching the Stipulation and Agreement of Settlement (Stipulation), which contained the terms of the proposed settlement. The proposed settlement terms include but are not limited to: a payment of $40 million to Exelon by Exelon’s insurers of which $10 million constitutes the attorneys’ fee award to be paid to the Settling Shareholders’ counsel; various compliance and disclosure-related reforms; and certain changes in Board and Committee composition. On June 30, 2023, the court granted the non-settling shareholders’ request for limited discovery into the settlement. Following that discovery, on October 26, 2023, the SLC filed its renewed motion for preliminary approval with supporting submissions filed by the Independent Review Committee, Exelon, and the Settling Shareholders on that same day. The parties briefing on preliminary approval was completed on January 18, 2024. On September 20, 2024, the court denied without prejudice the SLC’s motion for preliminary approval. The court’s order provides that if the SLC can substantiate or otherwise revise the attorneys’ fees aspect of the settlement, then the SLC can renew its motion for preliminary approval by October 21, 2024. Otherwise, the court directed the parties to file a joint status report by October 30, 2024, proposing next steps to advance the case. On October 21, 2024, the SLC filed its second renewed motion for preliminary approval, and the Settling Shareholders filed a brief in support of the SLC's second renewed motion for preliminary approval. On November 20, 2024, the non-settling plaintiffs filed an opposition to the renewed motion for preliminary approval. On December 18, 2024, the SLC and Settling Shareholders filed replies in support of the renewed motion for preliminary approval. In August 2022, the ICC concluded its investigation initiated on August 12, 2021 into rate impacts of conduct admitted in the DPA, including the costs recovered from customers related to the DPA and Exelon's funding of the fine paid by ComEd. On August 17, 2022, the ICC issued its final order accepting ComEd's voluntary customer refund offer of approximately $38 million (of which about $31 million was ICC jurisdictional; the remaining balance was FERC jurisdictional) that resolved the question of whether customer funds were used for DPA related activities. The customer refund included the cost of every individual or entity that was either (i) identified in the DPA or (ii) identified by ComEd as an associate of the former Speaker of the Illinois House of Representatives in the ICC proceeding. The ICC’s DPA investigation is now closed. The ICC jurisdictional refund was made to customers during the April 2023 billing cycle, as required by the ICC. The FERC jurisdictional refund was completed as of May 2024 as part of ComEd's transmission formula rate update proceeding, submitted on May 12, 2023. The customer refund was not recovered in rates or charged to customers and ComEd will not seek or accept reimbursement or indemnification from any source other than Exelon. Maryland Sales and Use Tax Refund Claim (Exelon, BGE, PHI, Pepco, and DPL). Maryland imposes a 6% sales and use tax on the purchase of most goods and services. BGE, Pepco, and DPL have filed or plan to file protective refund claims, totaling an estimated $100 million, treating electric transmission and distribution machinery and equipment as nontaxable pursuant to the manufacturing exemption available under the Maryland sales and use tax law. The Maryland Comptroller has initially denied the refund claim and litigation is pending. On November 22, 2024, the Appellate Court of Maryland, in a case involving a regulated electric utility operating in Maryland, ruled the purchase of certain transmission and distribution equipment qualify for the sales tax manufacturing exemption. The Maryland Attorney General, on behalf of the Maryland Comptroller, filed a motion for reco

Shareholders' Equity (All Regis

Shareholders' Equity (All Registrants)	12 Months Ended
	Dec. 31, 2024
Equity [Abstract]
Shareholders' Equity (All Registrants) [Text Block]	Shareholders' Equity (All Registrants) Equity Securities Offering (Exelon) On August 4, 2022, Exelon entered into an agreement with certain underwriters in connection with an underwritten public offering (the “Offering”) of 11.3 million shares (the “Shares”) of its Common stock, no par value (“Common Stock”). The Shares were sold to the underwriters at a price per share of $43.32. Exelon also granted the underwriters an option to purchase an additional 1.695 million shares of Common stock also at the price per share of $43.32. On August 5, 2022, the underwriters exercised the option in full. The net proceeds from the Offering and the exercise of the underwriters’ option were $563 million before expenses paid by Exelon. Exelon used the proceeds, together with available cash balances, to repay $575 million in borrowings under a $1.15 billion term loan credit facility. See Note 16 — Debt and Credit Agreements for additional information on Exelon’s term loan within our 2022 10-K. At-the-Market Program (Exelon) On August 4, 2022, Exelon executed an equity distribution agreement (“Equity Distribution Agreement”), with certain sales agents and forward sellers and certain forward purchasers, establishing an ATM equity distribution program under which it may offer and sell shares of its Common stock, having an aggregate gross sales price of up to $1.0 billion. Exelon has no obligation to offer or sell any shares of Common stock under the Equity Distribution Agreement and may, at any time, suspend or terminate offers and sales under the Equity Distribution Agreement. In the fourth quarter 2023, Exelon issued approximately 3.6 million shares of Common stock at an average gross price of $39.58 per share. In the third quarter 2024, Exelon issued approximately 4 million shares of Common Stock at an average gross price of $37.60 per share. The net proceeds from the 2023 and 2024 issuances were $140 million and $148 million, which were used for general corporate purposes. As of December 31, 2024, $708 million of Common stock remained available for sale pursuant to the ATM program. ComEd Common Stock Warrants The following table presents warrants outstanding to purchase ComEd common stock and shares of common stock reserved for the conversion of warrants. The warrants entitle the holders to convert such warrants into common stock of ComEd at a conversion rate of one share of common stock for three warrants. December 31, 2024 2023 Warrants outstanding 59,970 60,032 Common Stock reserved for conversion 19,990 20,011 Share Repurchases There currently is no Exelon Board of Director authority to repurchase shares. Any previous shares repurchased are held as treasury shares, at cost, unless cancelled or reissued at the discretion of Exelon’s management. Preferred and Preference Securities The following table presents Exelon, ComEd, PECO, BGE, Pepco, and ACE's shares of preferred securities authorized, none of which were outstanding, as of December 31, 2024 and 2023. There are no shares of preferred securities authorized for DPL. Preferred Securities Authorized Exelon 100,000,000 ComEd 850,000 PECO 15,000,000 BGE 1,000,000 Pepco 6,000,000 ACE (a) 2,799,979 _________ (a) Includes 799,979 shares of cumulative preferred stock and 2,000,000 of no par value preferred stock as of December 31, 2024 and 2023. The following table presents ComEd, BGE, and ACE's preference securities authorized, none of which were outstanding as of December 31, 2024 and 2023. There are no shares of preference securities authorized for Exelon, PECO, Pepco, and DPL. Preference Securities Authorized ComEd 6,810,451 BGE (a) 6,500,000 ACE 3,000,000 __________ (a) Includes 4,600,000 shares of unclassified preference securities and 1,900,000 shares of previously redeemed preference securities as of December 31, 2024 and 2023.

Stock-Based Compensation Plans

Stock-Based Compensation Plans (All Registrants)	12 Months Ended
	Dec. 31, 2024
Share-Based Payment Arrangement [Abstract]
Stock-Based Compensation Plans (All Registrants)	Stock-Based Compensation Plans (All Registrants) Stock-Based Compensation Plans Exelon grants stock-based awards through its LTIP, which primarily includes performance share awards, restricted stock units, and stock options. At December 31, 2024, there were approximately 32 million shares authorized for issuance under the LTIP. For the years ended December 31, 2024, 2023, and 2022, exercised and distributed stock-based awards were primarily issued from authorized but unissued Common stock shares. Separation-related Adjustments. In connection with the separation, Exelon and Constellation entered into an Employee Matters Agreement, effective February 1, 2022. Under the terms of the Employee Matters Agreement, and pursuant to the terms of the LTIP, the Compensation Committee of the Board of Exelon approved an adjustment to outstanding awards granted under the LTIP in order to preserve the intrinsic aggregate value of such awards before the separation. The separation-related adjustments did not have a material impact on either compensation expense or the potentially dilutive securities to be considered in the calculation of diluted earnings per share of Common stock. Former Exelon employees transferred to Constellation as a result of the separation surrendered their outstanding unvested Exelon awards effective February 1, 2022. The Registrants grant cash awards. The following table does not include expense related to these plans as they are not considered stock-based compensation plans under the applicable authoritative guidance. The following table presents the stock-based compensation expense included in Exelon's Consolidated Statements of Operations and Comprehensive Income. The Utility Registrants' stock-based compensation expense for the years ended December 31, 2024, 2023, and 2022 was not material. Year Ended December 31, Exelon 2024 2023 2022 Total stock-based compensation expense included in Operating and maintenance expense $ 34 $ 21 $ 41 Income tax benefit (8) (5) (10) Total after-tax stock-based compensation expense $ 26 $ 16 $ 31 Exelon receives a tax deduction based on the intrinsic value of the award on the exercise date for stock options and the distribution date for performance share awards and restricted stock units. For each award, throughout the requisite service period, Exelon recognizes the tax benefit related to compensation costs. The following table presents information regarding Exelon’s realized tax benefit when distributed: Year Ended December 31, 2024 2023 2022 Performance share awards $ 9 $ 8 $ 6 Restricted stock units 4 6 6 Performance Share Awards Performance share awards are granted under the LTIP. The performance share awards granted in 2024 are settled in common stock at the end of the three-year performance period. The performance share awards granted prior to 2024 are settled 50% in common stock and 50% in cash at the end of the three-year performance period, except for awards that are settled 100% in cash if certain ownership requirements are satisfied. The common stock portion of the performance share awards is considered an equity award and is valued based on Exelon's stock price on the grant date. The cash portion of the performance share awards is considered a liability award which is remeasured each reporting period based on Exelon’s current stock price. As the value of the common stock and cash portions of the awards are based on Exelon’s stock price during the performance period, coupled with changes in the total shareholder return modifier and expected payout of the award, the compensation costs are subject to volatility until payout is established. For nonretirement-eligible employees, stock-based compensation costs are recognized over the vesting period of three years using the straight-line method. For performance share awards granted to retirement-eligible employees, the value of the performance shares is recognized ratably over the vesting period, which is the year of grant. Exelon processes forfeitures as they occur for employees who do not complete the requisite service period. The following table summarizes Exelon’s nonvested performance share awards activity: Shares Weighted Average Nonvested at December 31, 2023 (a) 958,242 $ 42.01 Granted 679,683 35.29 Change in performance (131,794) 40.38 Vested (311,971) 41.25 Forfeited (86,359) 37.80 Undistributed vested awards (b) (496,276) 37.34 Nonvested at December 31, 2024 (a) 611,525 $ 39.66 __________ (a) Excludes 635,526 and 1,198,093 of performance share awards issued to retirement-eligible employees as of December 31, 2024 and 2023, respectively, as they are fully vested. (b) Represents performance share awards that vested but were not distributed to retirement-eligible employees during 2024. The following table summarizes the weighted average grant date fair value and the total fair value of performance share awards vested. Year Ended December 31, 2024 (a) 2023 2022 Weighted average grant date fair value (per share) $ 35.29 $ 41.82 $ 43.05 Total fair value of performance shares vested 27 17 29 Total fair value of performance shares settled in cash 27 26 25 __________ (a) As of December 31, 2024, $8 million of total unrecognized compensation costs related to nonvested performance shares are expected to be recognized over the remaining weighted-average period of 1.7 years. Restricted Stock Units Restricted stock units are granted under the LTIP with the majority being settled in a specific number of shares of common stock after the service condition has been met. The corresponding cost of services is measured based on the grant date fair value of the restricted stock unit issued. The value of the restricted stock units is expensed over the requisite service period using the straight-line method. The requisite service period for restricted stock units is generally three The following table summarizes Exelon’s nonvested restricted stock unit activity: Shares Weighted Average Nonvested at December 31, 2023 (a) 531,945 $ 42.87 Granted 361,745 35.54 Vested (309,500) 42.79 Forfeited (31,466) 40.07 Undistributed vested awards (b) (259,135) 37.16 Nonvested at December 31, 2024 (a) 293,589 $ 39.29 __________ (a) Excludes 126,732 and 205,855 of restricted stock units issued to retirement-eligible employees as of December 31, 2024 and 2023, respectively, as they are fully vested. (b) Represents restricted stock units that vested but were not distributed to retirement-eligible employees during 2024. The following table summarizes the weighted average grant date fair value and the total fair value of restricted stock units vested. Year Ended December 31, 2024 (a) 2023 2022 Weighted average grant date fair value (per share) $ 35.54 $ 41.84 $ 42.97 Total fair value of restricted stock units vested 21 15 23 __________ (a) As of December 31, 2024, $5 million of total unrecognized compensation costs related to nonvested restricted stock units are expected to be recognized over the remaining weighted-average period of 1.5 years. Stock Options Non-qualified stock options to purchase shares of Exelon’s common stock were granted through 2012 under the LTIP. The exercise price of the stock options is equal to the fair market value of the underlying stock on the date of option grant. Stock options will expire no later than ten years from the date of grant. There were no stock options granted during the years ended December 31, 2024 and 2023. All stock options were vested and exercised as of December 31, 2022. The following table summarizes additional information regarding stock options exercised: Year Ended December 31, 2024 2023 2022 Intrinsic value (a) $ — $ — $ — Cash received for exercise price — — 1 __________ (a) The difference between the market value on the date of exercise and the option exercise price.

Changes in Accumulated Other Co

Changes in Accumulated Other Comprehensive Income (Exelon)	12 Months Ended
	Dec. 31, 2024
AOCI Attributable to Parent [Abstract]
Changes in Accumulated Other Comprehensive Income (Exelon)	Changes in Accumulated Other Comprehensive Income (Loss) (Exelon) The following table presents changes in Exelon's AOCI, net of tax, by component: Cash Flow Pension and (a) Foreign Total Balance at December 31, 2021 $ (6) $ (2,721) $ (23) $ (2,750) Separation of Constellation 6 1,994 23 2,023 OCI before reclassifications 2 46 — 48 Amounts reclassified from AOCI — 41 — 41 Net current-period OCI $ 2 $ 87 $ — $ 89 Balance at December 31, 2022 $ 2 $ (640) $ — $ (638) OCI before reclassifications (4) (109) — (113) Amounts reclassified from AOCI (1) 26 — 25 Net current-period OCI $ (5) $ (83) $ — $ (88) Balance at December 31, 2023 $ (3) $ (723) $ — $ (726) OCI before reclassifications 52 (70) — (18) Amounts reclassified from AOCI (4) 28 — 24 Net current-period OCI $ 48 $ (42) $ — $ 6 Balance at December 31, 2024 $ 45 $ (765) $ — $ (720) __________ (a) This AOCI component is included in the computation of net periodic pension and OPEB cost. Additionally, as of February 1, 2022, in connection with the separation, Exelon's pension and OPEB plans were remeasured. See Note 14 — Retirement Benefits for additional information. See Exelon's Statements of Operations and Comprehensive Income for individual components of AOCI. The following table presents income tax benefit (expense) allocated to each component of Exelon's Other comprehensive income (loss): For the Years Ended December 31, 2024 2023 2022 Pension and non-pension postretirement benefit plans: Actuarial losses reclassified to periodic benefit cost $ (10) $ (8) $ (14) Pension and non-pension postretirement benefit plans valuation adjustments 23 33 (14) Unrealized gains on cash flow hedges (15) 2 —

Supplemental Financial Informat

Supplemental Financial Information (All Registrants)	12 Months Ended
	Dec. 31, 2024
Supplemental Financial Information [Abstract]
Supplemental Financial Information (All Registrants)	Supplemental Financial Information (All Registrants) Supplemental Statement of Operations Information The following tables provide additional information about material items recorded in the Registrants' Consolidated Statements of Operations and Comprehensive Income. Taxes other than income taxes Exelon ComEd PECO BGE PHI Pepco DPL ACE For the Year Ended December 31, 2024 Utility (a) $ 925 $ 300 $ 179 $ 105 $ 341 $ 310 $ 27 $ 4 Property 431 32 19 221 159 108 48 3 Payroll 134 37 17 19 28 6 4 3 For the Year Ended December 31, 2023 Utility (a) $ 875 $ 299 $ 166 $ 97 $ 313 $ 283 $ 26 $ 4 Property 401 33 16 205 147 101 44 2 Payroll 124 31 17 18 27 6 5 3 For the Year Ended December 31, 2022 Utility (a) $ 878 $ 306 $ 166 $ 94 $ 312 $ 283 $ 25 $ 4 Property 377 31 17 191 138 94 42 2 Payroll 117 28 16 17 25 6 4 3 __________ (a) The Registrants’ utility taxes represents municipal and state utility taxes and gross receipts taxes related to their operating revenues. The offsetting collection of utility taxes from customers is recorded in revenues in the Registrants’ Consolidated Statements of Operations and Comprehensive Income. Other, net Exelon ComEd PECO BGE PHI Pepco DPL ACE For the Year Ended December 31, 2024 AFUDC—Equity $ 157 $ 46 $ 32 $ 25 $ 54 $ 40 $ 12 $ 2 Non-service net periodic benefit cost (38) — — — — — — — For the Year Ended December 31, 2023 AFUDC—Equity $ 151 $ 33 $ 31 $ 16 $ 71 $ 54 $ 10 $ 7 Non-service net periodic benefit cost (18) — — — — — — — For the Year Ended December 31, 2022 AFUDC—Equity $ 150 $ 35 $ 31 $ 21 $ 63 $ 48 $ 7 $ 8 Non-service net periodic benefit cost 63 — — — — — — — Supplemental Cash Flow Information The following tables provide additional information about material items recorded in the Registrants' Consolidated Statements of Cash Flows. Depreciation, amortization, and accretion Exelon (a) ComEd PECO BGE PHI Pepco DPL ACE For the Year Ended December 31, 2024 Property, plant, and equipment (b) $ 2,910 $ 1,167 $ 414 $ 490 $ 782 $ 336 $ 218 $ 211 Amortization of regulatory assets (b) 676 347 14 148 164 70 27 67 Amortization of intangible assets, net (b) 8 — — — — — — — ARO accretion (e) 2 — — — 1 1 — — Total depreciation and amortization $ 3,596 $ 1,514 $ 428 $ 638 $ 947 $ 407 $ 245 $ 278 For the Year Ended December 31, 2023 Property, plant, and equipment (b) $ 2,778 $ 1,095 $ 383 $ 509 $ 737 $ 311 $ 208 $ 195 Amortization of regulatory assets (b) 720 308 14 145 253 130 36 88 Amortization of intangible assets, net (b) 8 — — — — — — — Total depreciation, amortization, and accretion $ 3,506 $ 1,403 $ 397 $ 654 $ 990 $ 441 $ 244 $ 283 For the Year Ended December 31, 2022 Property, plant, and equipment (b) $ 2,690 $ 1,031 $ 359 $ 476 $ 680 $ 288 $ 191 $ 173 Amortization of regulatory assets (b) 718 292 14 154 258 129 41 88 Amortization of intangible assets, net (b) 12 — — — — — — — Amortization of energy contract assets and liabilities (c) 3 — — — — — — — Nuclear fuel (d) 66 — — — — — — — ARO accretion (e) 44 — — — — — — — Total depreciation, amortization, and accretion $ 3,533 $ 1,323 $ 373 $ 630 $ 938 $ 417 $ 232 $ 261 __________ (a) Exelon's 2022 amounts include amounts related to Generation prior to the separation. See Note 2 — Discontinued Operations for additional information. (b) Included in Depreciation and amortization in the Registrants' Consolidated Statements of Operations and Comprehensive Income. (c) Included in Electric operating revenues or Purchased power expense in Exelon’s Consolidated Statements of Operations and Comprehensive Income. (d) Included in Purchased fuel expense in Exelon’s Consolidated Statements of Operations and Comprehensive Income. (e) Included in Operating and maintenance expense in Exelon's Consolidated Statements of Operations and Comprehensive Income. Cash paid (refunded) during the year Exelon (a) ComEd PECO BGE PHI Pepco DPL ACE For the Year Ended December 31, 2024 Interest (net of amount capitalized) $ 1,849 $ 485 $ 218 $ 198 $ 355 $ 183 $ 89 $ 74 Income taxes (net of refunds) 81 250 128 100 150 96 57 20 For the Year Ended December 31, 2023 Interest (net of amount capitalized) $ 1,616 $ 441 $ 200 $ 171 $ 301 $ 153 $ 69 $ 68 Income taxes (net of refunds) 10 11 (24) 29 21 6 6 9 For the Year Ended December 31, 2022 Interest (net of amount capitalized) $ 1,434 $ 396 $ 166 $ 147 $ 274 $ 141 $ 63 $ 60 Income taxes (net of refunds) 73 23 31 16 19 28 (2) (6) __________ (a) Exelon's 2022 amounts include amounts related to Generation prior to the separation. See Note 2 — Discontinued Operations for additional information. Other non-cash operating activities Exelon (a) ComEd PECO BGE PHI Pepco DPL ACE For the Year Ended December 31, 2024 Pension and OPEB costs (benefit) $ 252 $ 72 $ (1) $ 59 $ 93 $ 32 $ 15 $ 12 Allowance for credit losses 208 23 91 25 69 30 10 28 True-up adjustments to decoupling mechanisms and formula rates (b) 109 151 (6) (52) 16 (15) 10 21 Amortization of operating ROU asset 38 — — 6 26 6 6 3 Change in environmental liabilities — — — — — — — — AFUDC - Equity (157) (46) (32) (25) (54) (40) (12) (2) For the Year Ended December 31, 2023 Pension and OPEB costs (benefit) $ 198 $ 26 $ (14) $ 56 $ 99 $ 34 $ 18 $ 13 Allowance for credit losses 125 4 45 16 60 33 10 17 True-up adjustments to decoupling mechanisms and formula rates (b) (708) (556) 7 (84) (77) (22) (21) (34) Amortization of operating ROU asset 39 2 — 5 28 6 8 3 Change in environmental liabilities 37 — — — 37 37 — — AFUDC - Equity (151) (33) (31) (16) (71) (54) (10) (7) For the Year Ended December 31, 2022 Pension and OPEB costs (benefit) $ 164 $ 60 $ (9) $ 44 $ 53 $ 9 $ 3 $ 12 Allowance for credit losses 173 46 45 25 58 29 12 16 Other decommissioning-related activity 36 — — — — — — — Energy-related options 60 — — — — — — — True-up adjustments to decoupling mechanisms and formula rates (b) (168) (267) (2) 47 54 31 7 16 Long-term incentive plan 42 — — — — — — — Amortization of operating ROU Asset 56 2 — 14 27 7 8 3 AFUDC - Equity (150) (35) (31) (21) (63) (48) (7) (8) __________ (a) Exelon's 2022 amounts include amounts related to Generation prior to the separation. See Note 2 — Discontinued Operations for additional information. (b) For ComEd, reflects the true-up adjustments in Regulatory assets and liabilities associated with its distribution MRP and distribution, energy efficiency, distributed generation, and transmission formula rates. For PECO, reflects the change in Regulatory assets and liabilities associated with its transmission formula rate. For BGE, Pepco, DPL, and ACE, reflects the change in Regulatory assets and liabilities associated with their decoupling mechanisms and transmission formula rates. See Note 3 — Regulatory Matters for additional information. The following tables provide a reconciliation of cash, restricted cash, and cash equivalents reported within the Registrants' Consolidated Balance Sheets that sum to the total of the same amounts in their Consolidated Statements of Cash Flows. Cash, restricted cash, and cash equivalents Exelon ComEd PECO BGE PHI Pepco DPL ACE Balance at December 31, 2024 Cash and cash equivalents $ 357 $ 105 $ 48 $ 33 $ 139 $ 30 $ 21 $ 14 Restricted cash and cash equivalents 541 486 — 1 24 21 2 — Restricted cash included in Other deferred debits and other assets 41 41 — — — — — — Total cash, restricted cash, and cash equivalents $ 939 $ 632 $ 48 $ 34 $ 163 $ 51 $ 23 $ 14 Balance at December 31, 2023 Cash and cash equivalents $ 445 $ 110 $ 42 $ 47 $ 180 $ 48 $ 16 $ 21 Restricted cash and cash equivalents 482 402 9 1 24 24 — — Restricted cash included in Other deferred debits and other assets 174 174 — — — — — — Total cash, restricted cash, and cash equivalents $ 1,101 $ 686 $ 51 $ 48 $ 204 $ 72 $ 16 $ 21 Balance at December 31, 2022 Cash and cash equivalents $ 407 $ 67 $ 59 $ 43 $ 198 $ 45 $ 31 $ 72 Restricted cash and cash equivalents 566 327 9 24 175 54 121 — Restricted cash included in Other deferred debits and other assets 117 117 — — — — — — Total cash, restricted cash, and cash equivalents $ 1,090 $ 511 $ 68 $ 67 $ 373 $ 99 $ 152 $ 72 Balance at December 31, 2021 Cash and cash equivalents $ 672 $ 131 $ 36 $ 51 $ 136 $ 34 $ 28 $ 29 Restricted cash and cash equivalents 321 210 8 4 77 34 43 — Restricted cash included in Other deferred debits and other assets 44 43 — — — — — — Cash, restricted cash, and cash equivalents included in current assets of discontinued operations 582 — — — — — Total cash, restricted cash, and cash equivalents $ 1,619 $ 384 $ 44 $ 55 $ 213 $ 68 $ 71 $ 29 For additional information on restricted cash, see Note 1 — Significant Accounting Policies. Supplemental Balance Sheet Information The following tables provide additional information about material items recorded in the Registrants' Consolidated Balance Sheets. Investments Exelon ComEd PECO BGE PHI Pepco Balance at December 31, 2024 Rabbi trust investments (a) $ 260 $ — $ 34 $ 10 $ 151 $ 135 Equity method investments 15 6 7 — 1 — Other investments 15 — — — — — Total investments $ 290 $ 6 $ 41 $ 10 $ 152 $ 135 Balance at December 31, 2023 Rabbi trust investments (a) $ 231 $ — $ 28 $ 9 $ 142 $ 124 Equity method investments $ 15 $ 6 $ 7 $ — $ 1 $ — Other investments 5 — — — — — Total investments $ 251 $ 6 $ 35 $ 9 $ 143 $ 124 __________ (a) The Registrants’ debt and equity security investments and life insurance contracts are recorded at fair market value. Accrued expenses Exelon ComEd PECO BGE PHI Pepco DPL ACE Balance at December 31, 2024 Compensation-related accruals (a) $ 679 $ 197 $ 87 $ 88 $ 132 $ 38 $ 26 $ 18 Taxes accrued 217 96 13 34 110 92 11 11 Interest accrued 468 150 60 50 83 44 16 18 Balance at December 31, 2023 Compensation-related accruals (a) $ 661 $ 206 $ 87 $ 81 $ 107 $ 27 $ 17 $ 12 Taxes accrued 221 204 96 75 137 116 30 10 Interest accrued 414 148 49 44 72 38 13 15 __________ (a) Primarily includes accrued payroll, bonuses and other incentives, vacation, and benefits.

Related Party Transactions (All

Related Party Transactions (All Registrants)	12 Months Ended
	Dec. 31, 2024
Related Party Transactions [Abstract]
Related-Party Transactions (All Registrants)	Related Party Transactions (All Registrants) Utility Registrants' expense with Generation The Utility Registrants incurred expenses from transactions with the Generation affiliate as described in the footnotes to the table below prior to separation on February 1, 2022. Such expenses were primarily recorded as Purchased power from affiliates and an immaterial amount recorded as Operating and maintenance expense from affiliates at the Utility Registrants: At December 31, 2022 ComEd (a) $ 59 PECO (b) 33 BGE (c) 18 PHI 51 Pepco (d) 39 DPL (e) 10 ACE (f) 2 _________ (a) ComEd had an ICC-approved RFP contract with Generation to provide a portion of ComEd’s electric supply requirements. ComEd also purchased RECs and ZECs from Generation. (b) PECO received electric supply from Generation under contracts executed through PECO’s competitive procurement process. In addition, PECO had a ten (c) BGE received a portion of its energy requirements from Generation under its MDPSC-approved market-based SOS and gas commodity programs. (d) Pepco received electric supply from Generation under contracts executed through Pepco's competitive procurement process approved by the MDPSC and DCPSC. (e) DPL received a portion of its energy requirements from Generation under its MDPSC and DEPSC approved market-based SOS commodity programs. (f) ACE received electric supply from Generation under contracts executed through ACE's competitive procurement process approved by the NJBPU. Service Company Costs for Corporate Support The Registrants receive a variety of corporate support services from BSC. Pepco, DPL, and ACE also receive corporate support services from PHISCO. See Note 1 — Significant Accounting Policies for additional information regarding BSC and PHISCO. The following table presents the service company costs allocated to the Registrants: Operating and maintenance from affiliates Capitalized costs For the years ended December 31, For the years ended December 31, 2024 2023 2022 2024 2023 2022 Exelon BSC $ 633 $ 670 $ 707 PHISCO 114 96 80 ComEd BSC $ 418 $ 353 $ 316 254 307 311 PECO BSC 243 213 197 112 120 115 BGE BSC 246 221 204 110 90 122 PHI BSC 200 177 188 157 153 159 PHISCO — — — 114 95 80 Pepco BSC 125 114 110 70 59 60 PHISCO 125 122 112 50 39 33 DPL BSC 78 73 71 49 43 45 PHISCO 103 98 96 34 29 26 ACE BSC 64 59 57 32 47 54 PHISCO 97 92 84 30 26 21 Current Receivables from/Payables to affiliates The following tables present current Receivables from affiliates and current Payables to affiliates: December 31, 2024 Receivables from affiliates: Payables to affiliates: ComEd PECO BGE Pepco DPL ACE BSC PHISCO Other Total ComEd $ — $ — $ — $ — $ — $ 67 $ — $ 10 $ 77 PECO $ — — — — — 37 — 4 41 BGE — — — — — 47 — 1 48 PHI — — — — — — 7 1 10 18 Pepco — — — — 21 15 1 37 DPL — — — — — 14 11 1 26 ACE — — — — — 11 10 1 22 Other 4 — — 1 — 7 — — 12 Total $ 4 $ — $ — $ 1 $ — $ 7 $ 204 $ 37 $ 28 $ 281 December 31, 2023 Receivables from affiliates: Payables to affiliates: ComEd PECO BGE Pepco DPL ACE BSC PHISCO Other Total ComEd $ — $ — $ — $ — $ — $ 64 $ — $ 8 $ 72 PECO $ — — — — — 36 — 3 39 BGE — — — — — 33 — 2 35 PHI — — — — — — 5 — 10 15 Pepco — — — — — 17 14 1 32 DPL — 1 — — — 12 11 1 25 ACE — 1 — 1 1 11 11 — 25 Other 3 — — 1 — 3 1 — 8 Total $ 3 $ 2 $ — $ 2 $ 1 $ 3 $ 179 $ 36 $ 25 $ 251 Borrowings from Exelon/PHI intercompany money pool To provide an additional short-term borrowing option that will generally be more favorable to the borrowing participants than the cost of external financing both Exelon and PHI operate an intercompany money pool. PECO and PHI Corporate participate in the Exelon money pool. Pepco, DPL, and ACE participate in the PHI intercompany money pool. Long-term Debt to Financing Trusts The following table presents Long-term debt to financing trusts: At December 31, 2024 2023 Exelon ComEd PECO Exelon ComEd PECO ComEd Financing III $ 206 $ 206 $ — $ 206 $ 205 $ — PECO Trust III 81 — 81 81 — 81 PECO Trust IV 103 — 103 103 — 103 Total $ 390 $ 206 $ 184 $ 390 $ 205 $ 184

Schedule I - Condensed Financia

Schedule I - Condensed Financial Information of Parent (Exelon Corporate)	12 Months Ended
	Dec. 31, 2024
Condensed Financial Information Disclosure [Abstract]
Schedule I - Condensed Financial Information of Parent (Exelon Corporate)	Exelon Corporation and Subsidiary Companies Schedule I – Condensed Financial Information of Parent (Exelon Corporate) Condensed Statements of Operations and Other Comprehensive Income For the Years Ended December 31, (In millions) 2024 2023 2022 Operating expenses Operating and maintenance $ 7 $ 88 $ 25 Operating and maintenance from affiliates 8 7 4 Other 1 1 2 Total operating expenses 16 96 31 Operating loss (16) (96) (31) Other income and (deductions) Interest expense, net (593) (544) (413) Equity in earnings of investments 2,887 2,728 2,450 Interest income from affiliates, net 15 9 5 Other, net 22 19 22 Total other income and (deductions) 2,331 2,212 2,064 Income from continuing operations before income taxes 2,315 2,116 2,033 Income taxes (145) (212) (21) Net income from continuing operations after income taxes 2,460 2,328 2,054 Net income from discontinued operations after income taxes — — 116 Net income $ 2,460 $ 2,328 $ 2,170 Other comprehensive income (loss), net of income taxes Pension and non-pension postretirement benefit plans: Prior service benefits reclassified to periodic benefit cost — — (1) Actuarial losses reclassified to periodic benefit cost 28 26 42 Pension and non-pension postretirement benefit plans valuation adjustments (70) (109) 46 Unrealized gain (loss) on cash flow hedges 48 (5) 2 Other comprehensive income (loss) 6 (88) 89 Comprehensive income $ 2,466 $ 2,240 $ 2,259 Exelon Corporation and Subsidiary Companies Schedule I – Condensed Financial Information of Parent (Exelon Corporate) Condensed Statements of Cash Flows For the Years Ended December 31, (In millions) 2024 2023 2022 Net cash flows provided by operating activities $ 2,022 $ 1,486 $ 1,690 Cash flows from investing activities Changes in Exelon intercompany money pool 8 (43) 35 Notes receivable from affiliates — — 274 Investment in affiliates (1,568) (1,864) (4,011) Other investing activities (2) (1) — Net cash flows used in investing activities (1,562) (1,908) (3,702) Cash flows from financing activities Changes in short-term borrowings (99) 78 448 Proceeds from short-term borrowings with maturities greater than 90 days 150 — 1,150 Repayments on short-term borrowings with maturities greater than 90 days (150) — (1,300) Issuance of long-term debt 1,700 2,500 3,350 Retirement of long-term debt (715) (850) (1,150) Issuance of common stock 148 140 563 Dividends paid on common stock (1,523) (1,433) (1,334) Proceeds from employee stock plans 43 41 36 Other financing activities (36) (39) (35) Net cash flows (used in) provided by financing activities (482) 437 1,728 (Decrease) increase in cash, restricted cash, and cash equivalents (22) 15 (284) Cash, restricted cash, and cash equivalents at beginning of period 26 11 295 Cash, restricted cash, and cash equivalents at end of period $ 4 $ 26 $ 11 Exelon Corporation and Subsidiary Companies Schedule I – Condensed Financial Information of Parent (Exelon Corporate) Condensed Balance Sheets December 31, (In millions) 2024 2023 ASSETS Current assets Cash and cash equivalents $ 4 $ 26 Accounts receivable, net Other accounts receivable 288 561 Accounts receivable from affiliates 19 14 Notes receivable from affiliates 217 225 Regulatory assets 186 188 Other 19 17 Total current assets 733 1,031 Property, plant, and equipment, net 45 44 Deferred debits and other assets Regulatory assets 2,851 2,877 Investments in affiliates from continuing operations 40,741 38,545 Deferred income taxes 747 884 Non-pension postretirement benefit asset 186 144 Other 149 107 Total deferred debits and other assets 44,674 42,557 Total assets $ 45,452 $ 43,632 Exelon Corporation and Subsidiary Companies Schedule I – Condensed Financial Information of Parent (Exelon Corporate) Condensed Balance Sheets December 31, (In millions) 2024 2023 LIABILITIES AND SHAREHOLDERS’ EQUITY Current liabilities Short-term borrowings $ 927 $ 1,026 Long-term debt due within one year 807 500 Accounts payable 142 194 Accrued expenses 155 144 Payables to affiliates 360 361 Regulatory liabilities 11 10 Pension obligations 40 45 Other 3 49 Total current liabilities 2,445 2,329 Long-term debt 11,334 10,713 Deferred credits and other liabilities Regulatory liabilities 94 92 Pension obligations 4,346 4,268 Deferred income taxes 50 56 Other 262 419 Total deferred credits and other liabilities 4,752 4,835 Total liabilities 18,531 17,877 Commitments and contingencies Shareholders’ equity Common stock (No par value, 2,000 shares authorized, 1005 shares and 999 shares outstanding as of December 31, 2024 and 2023, respectively) 21,338 21,114 Treasury stock, at cost (2 shares as of December 31, 2024 and 2023) (123) (123) Retained earnings 6,426 5,490 Accumulated other comprehensive loss, net (720) (726) Total shareholders’ equity 26,921 25,755 Total liabilities and shareholders’ equity $ 45,452 $ 43,632 Exelon Corporation and Subsidiary Companies Schedule I – Condensed Financial Information of Parent (Exelon Corporate) Notes to Financial Statements Exelon Corporate is a holding company that conducts substantially all of its business operations through its subsidiaries. These condensed financial statements and related footnotes have been prepared in accordance with Rule 12-04, Schedule I of Regulation S-X. These statements should be read in conjunction with the consolidated financial statements, and notes thereto, of Exelon Corporation. As of December 31, 2024 and 2023, Exelon Corporate owned 100% of all of its significant subsidiaries, either directly or indirectly, except for Commonwealth Edison Company (ComEd), of which Exelon Corporate owns more than 99%. As of February 1, 2022, as a result of the completion of the separation, Exelon Corporate no longer retains any equity ownership interest in Generation or Constellation. The separation of Constellation, including Generation and its subsidiaries, met the criteria for discontinued operations and as such, results of operations are presented as discontinued operations and have been excluded from continuing operations for all periods presented. Accounting rules require certain BSC costs previously allocated to Generation to be presented as part of Exelon’s continuing operations as these costs do not qualify as expenses of the discontinued operations. Comprehensive income and cash flows related to Generation have not been segregated and are included in the Condensed Statements of Operations and Comprehensive Income and Condensed Statements of Cash Flows, respectively, for all periods presented. See Note 2 — Discontinued Operations of the Combined Notes to Consolidated Financial Statements for additional information. See Note 3—Regulatory Matters and Note 14—Retirement Benefits of the Combined Notes to Consolidated Financial Statements for Exelon Corporate’s regulatory assets and retirement benefits. See Note 15—Derivative Financial Instruments of the Combined Notes to Consolidated Financial Statements for Exelon Corporate’s derivatives. Short-Term Borrowings Exelon Corporate meets its short-term liquidity requirements primarily through the issuance of commercial paper. Exelon Corporate had $426 million in outstanding commercial paper borrowings as of December 31, 2024 and $527 million outstanding commercial paper as of December 31, 2023. Revolving Credit Agreements As of December 31, 2024, Exelon Corporate had a $900 million aggregate bank commitment under its existing syndicated revolving facility in which $471 million was available to support additional commercial paper as of December 31, 2024. Exelon Corporate had $3 million outstanding letters of credit as of December 31, 2024. See Note 16 — Debt and Credit Agreements of the Combined Notes to Consolidated Financial Statements for additional information regarding Exelon Corporate’s credit agreement. On August 29, 2024, Exelon Corporate entered into a new revolving credit facility with an aggregate bank commitment of $900 million at a variable interest rate of SOFR plus 1.275% which replaced its existing $900 million syndicated revolving credit facility, and extended the maturity date to August 29, 2029. Exelon Corporate had no outstanding amounts on the revolving credit facilities as of December 31, 2024. Short-Term Loan Agreements On March 23, 2017, Exelon Corporate entered into a term loan agreement for $500 million. The loan agreement was renewed in the first quarter of 2024 and was bifurcated into two tranches of $350 million and $150 million on March 14, 2024. The agreements will expire on March 14, 2025. Pursuant to the loan agreements, loans made thereunder bear interest at a variable rate equal to SOFR plus 1.05% and all indebtedness thereunder is unsecured. The loan agreement is reflected in Exelon Corporate's Condensed Balance Sheets within Short-term borrowings. Debt Extinguishment During the twelve months ended December 31, 2024, Exelon Corporate repurchased a portion of its Senior unsecured notes with a principal balance of $244 million outstanding in exchange for cash of $215 million. The repurchase was accounted for as a debt extinguishment and resulted in a pre-tax gain of $28 million, which is reflected on Exelon Corporate's Condensed Statement of Operations and Comprehensive income within Interest expense, net. Long-Term Debt The following tables present the outstanding long-term debt for Exelon Corporate at December 31, 2024 and December 31, 2023: Maturity December 31, Rates 2024 2023 Long-term debt Senior unsecured notes 2.75 % - 7.60 % 2025 - 2053 $ 12,095 $ 10,639 Loan agreement (b) 6.23 % 2024 — 500 Total long-term debt 12,095 11,139 Unamortized debt discount and premium, net (24) (13) Unamortized debt issuance costs (71) (65) Fair value adjustment 141 152 Long-term debt due within one year (a) (807) (500) Long-term debt $ 11,334 $ 10,713 __________ (a) Pursuant to the loan agreement, loans made thereunder bear interest at a variable rate equal to SOFR plus 0.85%. The long-term debt maturities for Exelon Corporate for the periods 2025 through 2029 and thereafter are as follows: 2025 $ 807 2026 750 2027 650 2028 1,000 2029 650 Thereafter 8,238 Total long-term debt $ 12,095 See Note 18—Commitments and Contingencies of the Combined Notes to Consolidated Financial Statements for Exelon Corporate’s commitments and contingencies. The financial statements of Exelon Corporate include related party transactions as presented in the tables below: For the Years Ended December 31, (In millions) 2024 2023 2022 Operating and maintenance from affiliates: BSC (a) $ 8 $ 7 $ 4 Total operating and maintenance from affiliates: $ 8 $ 7 $ 4 Interest income (expense) from affiliates, net: BSC $ 11 $ 6 $ 4 EEDC (b) 4 3 1 Total interest income from affiliates, net: $ 15 $ 9 $ 5 Equity in earnings (losses) of investments: BSC $ — $ — $ (18) EEDC (b) 2,886 2,727 2,482 PCI 3 2 (9) Connectiv, LLC (2) — — Exelon Enterprises — 1 — Exelon InQB8R — (2) (4) Other — — (1) Total equity in earnings of investments: $ 2,887 $ 2,728 $ 2,450 Cash contributions received from affiliates $ 2,250 $ 1,978 $ 2,027 At December 31, (in millions) 2024 2023 Accounts receivable from affiliates (current): BSC $ 2 $ — ComEd 5 4 PECO 3 2 BGE 2 1 PHISCO 7 7 Total accounts receivable from affiliates (current): $ 19 $ 14 Notes receivable from affiliates (current): BSC (a) $ 154 $ 160 PHI 63 65 Total notes receivable from affiliates (current): $ 217 $ 225 Investments in affiliates from continuing operations: BSC (a) $ 384 $ 384 EEDC (b) 39,905 37,705 PCI 57 54 UII 365 365 Voluntary Employee Beneficiary Association trust — 9 Exelon Enterprises 4 4 Conectiv 14 12 Exelon InQB8R 13 13 Other (c) (1) (1) Total investments in affiliates from continuing operations: $ 40,741 $ 38,545 Accounts payable to affiliates (current): UII $ 360 $ 360 BSC (a) — 1 Total accounts payable to affiliates (current): $ 360 $ 361 __________ (a) Exelon Corporate receives a variety of corporate support services from BSC, including legal, human resources, financial, information technology, and supply management services. All services are provided at cost, including applicable overhead. (b) EEDC consists of ComEd, PECO, BGE, PHI, Pepco, DPL, and ACE. (c) Primarily relates to elimination of affiliate transactions with Generation, primarily related to the Regulatory Agreement Units. See Note 3 — Regulatory Matters and Note 23 — Related Party Transactions of the Combined Notes to Consolidated Financial Statements for additional information.

Schedule II - Valuation and Qua

Schedule II - Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2024
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]
Valuation and Qualifying Accounts	Exelon Corporation and Subsidiary Companies Schedule II – Valuation and Qualifying Accounts Column A Column B Column C Column D Column E Additions and adjustments Description Balance at Charged to Charged Deductions Balance at (In millions) For the year ended December 31, 2024 Allowance for credit losses (a) $ 399 $ 271 (b) $ 22 $ 179 (c) $ 513 Deferred tax valuation allowance 114 — 6 — 120 For the year ended December 31, 2023 Allowance for credit losses (a) $ 409 $ 171 (b) $ 20 $ 201 (c) $ 399 Deferred tax valuation allowance 94 — 20 — 114 For the year ended December 31, 2022 Allowance for credit losses (a) $ 392 $ 174 (b) $ 28 $ 185 (c) $ 409 Deferred tax valuation allowance 37 — 57 (d) — 94 __________ (a) Excludes the noncurrent Allowance for credit losses related to PECO’s installment plan receivables of $13 million, $6 million, and $7 million for the years ended December 31, 2024, 2023, and 2022, respectively. (b) The amount charged to costs and expenses includes the amount reclassified to Regulatory assets/liabilities under different mechanisms applicable to the different jurisdictions in which the Utility Registrants operate. (c) Primarily reflects write-offs, net of recoveries, of individual accounts receivable. (d) DPL recorded a full valuation allowance against Delaware net operating losses carryforwards due to a change in Delaware tax law. See Note 13 — Income Taxes of the Combined Notes to Consolidated Financial Statements for additional information on the valuation allowance. Commonwealth Edison Company and Subsidiary Companies (2) ComEd (i) Financial Statements (Item 8): Report of Independent Registered Public Accounting Firm dated February 12, 2025 of PricewaterhouseCoopers LLP (PCAOB ID 238) Consolidated Statements of Operations and Comprehensive Income for the Years Ended December 31, 2024, 2023, and 2022 Consolidated Statements of Cash Flows for the Years Ended December 31, 2024, 2023, and 2022 Consolidated Balance Sheets at December 31, 2024 and 2023 Consolidated Statements of Changes in Shareholders’ Equity for the Years Ended December 31, 2024, 2023, and 2022 Notes to Consolidated Financial Statements (ii) Financial Statement Schedule: Schedule II—Valuation and Qualifying Accounts for the Years Ended December 31, 2024, 2023, and 2022 Schedules not included are omitted because of the absence of conditions under which they are required or because the required information is provided in the consolidated financial statements, including the notes thereto Commonwealth Edison Company and Subsidiary Companies Schedule II – Valuation and Qualifying Accounts Column A Column B Column C Column D Column E Additions and adjustments Description Balance at Charged to Charged Deductions Balance at (In millions) For the year ended December 31, 2024 Allowance for credit losses $ 86 $ 71 (a) $ 28 $ 42 (b) $ 143 For the year ended December 31, 2023 Allowance for credit losses $ 76 $ 45 (a) $ 13 $ 48 (b) $ 86 For the year ended December 31, 2022 Allowance for credit losses $ 90 $ 24 (a) $ 8 $ 46 (b) $ 76 __________ (a) ComEd is allowed to recover from or refund to customers the difference between its annual credit loss expense and the amounts collected in rates annually through a rider mechanism. The amount charged to costs and expenses includes the amount that was reclassified to Regulatory assets/liabilities under such mechanism. See Note 3 – Regulatory Matters of the Combined Notes to Consolidated Financial Statements for additional information. (b) Write-offs, net of recoveries of individual accounts receivable. PECO Energy Company and Subsidiary Companies (3) PECO (i) Financial Statements (Item 8): Report of Independent Registered Public Accounting Firm dated February 12, 2025 of PricewaterhouseCoopers LLP (PCAOB ID 238) Consolidated Statements of Operations and Comprehensive Income for the Years Ended December 31, 2024, 2023, and 2022 Consolidated Statements of Cash Flows for the Years Ended December 31, 2024, 2023, and 2022 Consolidated Balance Sheets at December 31, 2024 and 2023 Consolidated Statements of Changes in Shareholder's Equity for the Years Ended December 31, 2024, 2023, and 2022 Notes to Consolidated Financial Statements (ii) Financial Statement Schedule: Schedule II—Valuation and Qualifying Accounts for the Years Ended December 31, 2024, 2023, and 2022 Schedules not included are omitted because of the absence of conditions under which they are required or because the required information is provided in the consolidated financial statements, including the notes thereto PECO Energy Company and Subsidiary Companies Schedule II – Valuation and Qualifying Accounts Column A Column B Column C Column D Column E Additions and adjustments Description Balance at Charged to Charged Deductions Balance at (In millions) For the year ended December 31, 2024 Allowance for credit losses (a) $ 103 $ 88 $ (1) $ 39 (c) $ 151 Deferred tax valuation allowance 7 — (1) — 6 For the year ended December 31, 2023 Allowance for credit losses (a) $ 114 $ 43 (b) $ 9 $ 63 (c) $ 103 Deferred tax valuation allowance 7 — — — 7 For the year ended December 31, 2022 Allowance for credit losses (a) $ 112 $ 44 (b) $ 14 $ 56 (c) $ 114 Deferred tax valuation allowance 3 — 4 — 7 __________ (a) Excludes the noncurrent Allowance for credit losses related to PECO’s installment plan receivables of $13 million, $6 million, and $7 million for the years ended December 31, 2024, 2023, and 2022, respectively. (b) The amount charged to costs and expenses includes the amount that was reclassified to the COVID-19 regulatory asset. See Note 3 – Regulatory Matters of the Combined Notes to Consolidated Financial Statements for additional information. (c) Write-offs, net of recoveries of individual accounts receivable. Baltimore Gas and Electric Company (4) BGE (i) Financial Statements (Item 8): Report of Independent Registered Public Accounting Firm dated February 12, 2025 of PricewaterhouseCoopers LLP (PCAOB ID 238) Statements of Operations and Comprehensive Income for the Years Ended December 31, 2024, 2023 and 2022 Statements of Cash Flows for the Years Ended December 31, 2024, 2023 and 2022 Balance Sheets at December 31, 2024 and 2023 Statements of Changes in Shareholder's Equity for the Years Ended December 31, 2024, 2023 and 2022 Notes to Financial Statements (ii) Financial Statement Schedule: Schedule II—Valuation and Qualifying Accounts for the Years Ended December 31, 2024, 2023, and 2022 Schedules not included are omitted because of the absence of conditions under which they are required or because the required information is provided in the consolidated financial statements, including the notes thereto Baltimore Gas and Electric Company Schedule II – Valuation and Qualifying Accounts Column A Column B Column C Column D Column E Additions and adjustments Description Balance at Charged to Charged Deductions Balance at (In millions) For the year ended December 31, 2024 Allowance for credit losses $ 53 $ 39 (a) $ 4 $ 34 (b) $ 62 Deferred tax valuation allowance 3 — — — 3 For the year ended December 31, 2023 Allowance for credit losses $ 64 $ 26 (a) $ 5 $ 42 (b) $ 53 Deferred tax valuation allowance 3 — — — 3 For the year ended December 31, 2022 Allowance for credit losses $ 47 $ 37 (a) $ 6 $ 26 (b) $ 64 Deferred tax valuation allowance — — 3 — 3 __________ (a) The amount charged to costs and expenses includes the amount that was reclassified to Regulatory assets/liabilities under different mechanisms as approved by the MDPSC. (b) Write-offs, net of recoveries of individual accounts receivable. Pepco Holdings LLC and Subsidiary Companies (5) PHI (i) Financial Statements (Item 8): Report of Independent Registered Public Accounting Firm dated February 12, 2025 of PricewaterhouseCoopers LLP (PCAOB ID 238) Consolidated Statements of Operations and Comprehensive Income for the Years Ended December 31, 2024, 2023, and 2022 Consolidated Statements of Cash Flows for the Years Ended December 31, 2024, 2023, and 2022 Consolidated Balance Sheets at December 31, 2024 and 2023 Consolidated Statements of Changes in Equity for the Years Ended December 31, 2024, 2023, and 2022 Notes to Consolidated Financial Statements (ii) Financial Statement Schedule: Schedule II—Valuation and Qualifying Accounts for the Years Ended December 31, 2024, 2023, and 2022 Schedules not included are omitted because of the absence of conditions under which they are required or because the required information is provided in the consolidated financial statements, including the notes thereto Pepco Holdings LLC and Subsidiary Companies Schedule II – Valuation and Qualifying Accounts Column A Column B Column C Column D Column E Additions and adjustments Description Balance at Charged to Charged Deductions Balance at (In millions) For the year ended December 31, 2024 Allowance for credit losses $ 157 $ 73 (a) $ (9) $ 64 (b) $ 157 Deferred tax valuation allowance 35 — (3) — 32 For the year ended December 31, 2023 Allowance for credit losses $ 155 $ 57 (a) $ (7) $ 48 (b) $ 157 Deferred tax valuation allowance 35 — — — 35 For the year ended December 31, 2022 Allowance for credit losses $ 143 $ 69 (a) $ — $ 57 (b) $ 155 Deferred tax valuation allowance 31 — 4 (c) — 35 __________ (a) The amount charged to costs and expenses includes the amount that was reclassified to Regulatory assets/liabilities under different mechanisms applicable to the different jurisdictions Pepco, DPL, and ACE operate in. (b) Write-offs, net of recoveries of individual accounts receivable. (c) DPL recorded a full valuation allowance against Delaware net operating losses carryforwards due to a change in Delaware tax law. See Note 13 — Income Taxes of the Combined Notes to Consolidated Financial Statements for additional information on the valuation allowance. Potomac Electric Power Company (6) Pepco (i) Financial Statements (Item 8): Report of Independent Registered Public Accounting Firm dated February 12, 2025 of PricewaterhouseCoopers LLP (PCAOB ID 238) Statements of Operations and Comprehensive Income for the Years Ended December 31, 2024, 2023 and 2022 Statements of Cash Flows for the Years Ended December 31, 2024, 2023 and 2022 Balance Sheets at December 31, 2024 and 2023 Statements of Changes in Shareholder's Equity for the Years Ended December 31, 2024, 2023 and 2022 Notes to Financial Statements (ii) Financial Statement Schedule: Schedule II—Valuation and Qualifying Accounts for the Years Ended December 31, 2024, 2023, and 2022 Schedules not included are omitted because of the absence of conditions under which they are required or because the required information is provided in the consolidated financial statements, including the notes thereto Potomac Electric Power Company Schedule II – Valuation and Qualifying Accounts Column A Column B Column C Column D Column E Additions and adjustments Description Balance at Charged to Charged Deductions Balance at (In millions) For the year ended December 31, 2024 Allowance for credit losses $ 80 $ 48 (a) $ (10) $ 32 (b) $ 86 For the year ended December 31, 2023 Allowance for credit losses $ 72 $ 31 (a) $ (5) $ 18 (b) $ 80 For the year ended December 31, 2022 Allowance for credit losses $ 53 $ 36 (a) $ 4 $ 21 (b) $ 72 __________ (a) The amount charged to costs and expenses includes the amount that was reclassified to Regulatory assets/liabilities under different mechanisms as approved by the DCPSC and MDPSC. (b) Write-offs, net of recoveries of individual accounts receivable. Delmarva Power & Light Company (7) DPL (i) Financial Statements (Item 8): Report of Independent Registered Public Accounting Firm dated February 12, 2025 of PricewaterhouseCoopers LLP (PCAOB ID 238) Statements of Operations and Comprehensive Income for the Years Ended December 31, 2024, 2023 and 2022 Statements of Cash Flows for the Years Ended December 31, 2024, 2023 and 2022 Balance Sheets at December 31, 2024 and 2023 Statements of Changes in Shareholder's Equity for the Years Ended December 31, 2024, 2023 and 2022 Notes to Financial Statements (ii) Financial Statement Schedule: Schedule II—Valuation and Qualifying Accounts for the Years Ended December 31, 2024, 2023, and 2022 Schedules not included are omitted because of the absence of conditions under which they are required or because the required information is provided in the consolidated financial statements, including the notes thereto Delmarva Power & Light Company Schedule II – Valuation and Qualifying Accounts Column A Column B Column C Column D Column E Additions and adjustments Description Balance at Charged to Charged Deductions Balance at (In millions) For the year ended December 31, 2024 Allowance for credit losses $ 27 $ 11 (a) $ — $ 12 (b) $ 26 Deferred tax valuation allowance 32 — (3) — 29 For the year ended December 31, 2023 Allowance for credit losses $ 28 $ 10 (a) $ — $ 11 (b) $ 27 Deferred tax valuation allowance 32 — — — 32 For the year ended December 31, 2022 Allowance for credit losses $ 26 $ 13 (a) $ (2) $ 9 (b) $ 28 Deferred tax valuation allowance 31 — 1 — 32 __________ (a) The amount charged to costs and expenses includes the amount that was reclassified to Regulatory assets/liabilities under different mechanisms as approved by the DEPSC and MDPSC. (b) Write-offs, net of recoveries of individual accounts receivable. Atlantic City Electric Company and Subsidiary Company (8) ACE (i) Financial Statements (Item 8): Report of Independent Registered Public Accounting Firm dated February 12, 2025 of PricewaterhouseCoopers LLP (PCAOB ID 238) Consolidated Statements of Operations and Comprehensive Income for the Years Ended December 31, 2024, 2023, and 2022 Consolidated Statements of Cash Flows for the Years Ended December 31, 2024, 2023, and 2022 Consolidated Balance Sheets at December 31, 2024 and 2023 Consolidated Statements of Changes in Shareholder's Equity for the Years Ended December 31, 2024, 2023, and 2022 Notes to Consolidated Financial Statements (ii) Financial Statement Schedule: Schedule II—Valuation and Qualifying Accounts for the Years Ended December 31, 2024, 2023, and 2022 Schedules not included are omitted because of the absence of conditions under which they are required or because the required information is provided in the consolidated financial statements, including the notes thereto Atlantic City Electric Company and Subsidiary Company Schedule II – Valuation and Qualifying Accounts Column A Column B Column C Column D Column E Additions and adjustments Description Balance at Charged to Charged Deductions Balance at (In millions) For the year ended December 31, 2024 Allowance for credit losses $ 50 $ 14 (a) $ 1 $ 20 (b) $ 45 For the year ended December 31, 2023 Allowance for credit losses $ 55 $ 16 (a) (2) $ 19 (b) $ 50 For the year ended December 31, 2022 Allowance for credit losses $ 64 $ 20 (a) $ (2) $ 27 (b) $ 55 __________ (a) ACE is allowed to recover from or refund to customers the difference between its annual credit loss expense and the amounts collected in rates annually through the Societal Benefits Charge. The amount charged to costs and expenses includes the amount that was reclassified to Regulatory assets/liabilities under such mechanism. See Note 3 – Regulatory Matters of the Combined Notes to Consolidated Financial Statements for additional information. (b) Write-offs, net of recoveries of individual accounts receivable.

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Dec. 31, 2024
Trading Arrangements, by Individual
Material Terms of Trading Arrangement	None of our officers or directors, as defined in Rule 16a-1(f) of the Securities Exchange Act of 1934, adopted, modified, or terminated a “Rule 10b5-1 trading arrangement” or a “non-Rule 10b5-1 trading arrangement,” as defined in Item 408 of Regulation S-K, during the three months ended December 31, 2024.
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2024
Accounting Policies [Abstract]
Description of Business and Basis of Presentation (All Registrants)	Description of Business (All Registrants) Exelon is a utility services holding company engaged in the energy transmission and distribution businesses through ComEd, PECO, BGE, Pepco, DPL, and ACE. On February 21, 2021, Exelon’s Board of Directors approved a plan to separate the Utility Registrants and Generation. The separation was completed on February 1, 2022, creating two publicly traded companies, Exelon and Constellation. See Note 2 — Discontinued Operations for additional information. Name of Registrant Business Service Territories Commonwealth Edison Company Purchase and regulated retail sale of electricity Northern Illinois, including the City of Chicago Transmission and distribution of electricity to retail customers PECO Energy Company Purchase and regulated retail sale of electricity and natural gas Southeastern Pennsylvania, including the City of Philadelphia (electricity) Transmission and distribution of electricity and distribution of natural gas to retail customers Pennsylvania counties surrounding the City of Philadelphia (natural gas) Baltimore Gas and Electric Company Purchase and regulated retail sale of electricity and natural gas Central Maryland, including the City of Baltimore (electricity and natural gas) Transmission and distribution of electricity and distribution of natural gas to retail customers Pepco Holdings LLC Utility services holding company engaged, through its reportable segments Pepco, DPL, and ACE Service Territories of Pepco, DPL, and ACE Potomac Electric Power Company Purchase and regulated retail sale of electricity District of Columbia, and major portions of Montgomery and Prince George’s Counties, Maryland. Transmission and distribution of electricity to retail customers Delmarva Power & Light Company Purchase and regulated retail sale of electricity and natural gas Portions of Delaware and Maryland (electricity) Transmission and distribution of electricity and distribution of natural gas to retail customers Portions of New Castle County, Delaware (natural gas) Atlantic City Electric Company Purchase and regulated retail sale of electricity Portions of Southern New Jersey Transmission and distribution of electricity to retail customers Revision of Previously Issued Financial Statements (Exelon, BGE, PHI, Pepco, and DPL) In the fourth quarter of 2024, management identified an error related to the recording of Renewable energy credit obligations in Maryland and Washington D.C., and the corresponding Prepaid renewable energy credits, which were incorrectly netted on the balance sheet rather than reflected on a gross basis. As a result of this error, the Prepaid renewable energy credits and the Renewable energy credit obligations were understated on the Consolidated Balance Sheets of Exelon, BGE, PHI, Pepco, and DPL as of December 31, 2023, by $310 million, $147 million, $163 million, $136 million, and $27 million, respectively. There was no impact on the Consolidated Statements of Operations and Comprehensive Income, the Consolidated Statements of Cash Flows, or the Consolidated Statements of Changes in Equity for any of the Registrants for the years ended December 31, 2023, or December 31, 2022. Management has concluded that the error was not material to previously issued financial statements for Exelon, BGE, PHI, Pepco, or DPL. The Consolidated Balance Sheets as of December 31, 2023, for Exelon, BGE, PHI, Pepco, and DPL were revised to reflect the correction of the error. Basis of Presentation (All Registrants) This is a combined annual report of all Registrants. The Notes to the Consolidated Financial Statements apply to the Registrants as indicated parenthetically next to each corresponding disclosure. When appropriate, the Registrants are named specifically for their related activities and disclosures. Each of the Registrant’s Consolidated Financial Statements includes the accounts of its subsidiaries. All intercompany transactions have been eliminated, except for the historical transactions between the Utility Registrants and Generation for the purposes of presenting discontinued operations in all periods presented in the Consolidated Statements of Operations and Comprehensive Income. Through its business services subsidiary, BSC, Exelon provides its subsidiaries with a variety of support services at cost, including legal, human resources, financial, information technology, and supply management services. PHI also has a business services subsidiary, PHISCO, which provides a variety of support services at cost, including legal, finance, engineering, customer operations, transmission and distribution planning, asset management, system operations, and power procurement, to PHI operating Registrants. The costs of BSC and PHISCO are directly charged or allocated to the applicable subsidiaries. The results of Exelon’s corporate operations are presented as “Other” within the consolidated financial statements and include intercompany eliminations unless otherwise disclosed. As of December 31, 2024, and 2023, Exelon owned 100% of PECO, BGE, and PHI and more than 99% of ComEd. PHI owns 100% of Pepco, DPL, and ACE. As of February 1, 2022, as a result of the completion of the separation, Exelon no longer owns any interest in Generation. The separation of Constellation, including Generation and its subsidiaries, meets the criteria for discontinued operations and as such, its results of operations are presented as discontinued operations and have been excluded from continuing operations for all periods presented. Accounting rules require that certain BSC costs previously allocated to Generation be presented as part of Exelon’s continuing operations as these costs do not qualify as direct expenses of the discontinued operations. Comprehensive income, shareholders' equity, and cash flows related to Generation have not been segregated and are included in the Consolidated Statements of Operations and Comprehensive Income, Consolidated Statements of Changes in Shareholders’ Equity, and Consolidated Statements of Cash Flows, respectively, for the period ended December 31, 2022. See Note 2 — Discontinued Operations for additional information. The accompanying consolidated financial statements have been prepared in accordance with GAAP for annual financial statements and in accordance with the instructions to Form 10-K and Regulation S-X promulgated by the SEC.
Use Of Estimates (All Registrants)	Use of Estimates (All Registrants)
Regulatory Accounting (All Registrants)	Regulatory Accounting (All Registrants) For their regulated electric and gas operations, the Registrants reflect the effects of cost-based rate regulation in their financial statements, which is required for entities with regulated operations that meet the following criteria: (1) rates are established or approved by a third-party regulator; (2) rates are designed to recover the entities’ cost of providing services or products; and (3) there is a reasonable expectation that rates designed to recover costs can be charged to and collected from customers. The Registrants account for their regulated operations in accordance with regulatory and legislative guidance from the regulatory authorities having jurisdiction, principally the ICC, PAPUC, MDPSC, DCPSC, DEPSC, and NJBPU, under state public utility laws and the FERC under various Federal laws. Regulatory assets and liabilities are amortized and the related expense or revenue is recognized in the Consolidated Statements of Operations consistent with the recovery or refund included in customer rates. The Registrants' regulatory assets and liabilities as of the balance sheet date are probable of being recovered or settled in future rates. If a separable portion of the Registrants' business was no longer able to meet the criteria discussed above, the affected entities would be required to eliminate from their consolidated financial statements the effects of regulation for that portion, which could have a material impact on their financial statements. See Note 3 — Regulatory Matters for additional information. With the exception of income tax-related regulatory assets and liabilities, the Registrants classify regulatory assets and liabilities with a recovery or settlement period greater than one year as both current and noncurrent in their Consolidated Balance Sheets, with the current portion representing the amount expected to be recovered from or refunded to customers over the next twelve-month period as of the balance sheet date. Income tax-related regulatory assets and liabilities are classified entirely as noncurrent in the Registrants’ Consolidated Balance Sheets to align with the classification of the related deferred income tax balances. The Registrants treat the impacts of a final rate order received after the balance sheet date but prior to the issuance of the financial statements as a non-recognized subsequent event, as the receipt of a final rate order is a separate and distinct event that has future impacts on the parties affected by the order.
Revenues (All Registrants)	Revenues (All Registrants) Operating Revenues. The Registrants’ operating revenues generally consist of revenues from contracts with customers involving the sale and delivery of power and natural gas and utility revenues from ARPs. The Registrants recognize revenue from contracts with customers to depict the transfer of goods or services to customers in an amount that the entities expect to be entitled to in exchange for those goods or services. The primary sources of revenue include regulated electric and natural gas tariff sales, distribution, and transmission services. At the end of each month, the Registrants accrue an estimate for the unbilled amount of energy delivered or services provided to customers. ComEd records ARP revenue for its best estimate of the electric distribution, energy efficiency, and transmission revenue impacts resulting from future changes in rates that ComEd believes are probable of approval by the ICC and FERC in accordance with its distribution multi-year rate plan, distribution revenue decoupling mechanisms, and formula rate mechanisms. BGE, Pepco, DPL, and ACE record ARP revenue for their best estimate of the electric and natural gas distribution revenue impacts resulting from future changes in rates that they believe are probable of approval by the MDPSC, DCPSC, and/or NJBPU in accordance with their revenue decoupling mechanisms. PECO, BGE, Pepco, DPL, and ACE record ARP revenue for their best estimate of the transmission revenue impacts resulting from future changes in rates that they believe are probable of approval by FERC in accordance with their formula rate mechanisms. The Registrants recognize all ARP revenues that will be collected within 24 months of the end of the annual period in which they are recorded. See Note 3 — Regulatory Matters for additional information.
Taxes Directly Imposed on Revenue-Producing Transactions	Taxes Directly Imposed on Revenue-Producing Transactions. The Registrants collect certain taxes from customers such as sales and gross receipts taxes, along with other taxes, surcharges, and fees, that are levied by state or local governments on the sale or distribution of electricity and gas. Some of these taxes are imposed on the customer, but paid by the Registrants, while others are imposed on the Registrants. Where these taxes are imposed on the customer, such as sales taxes, they are reported on a net basis with no impact to the Consolidated Statements of Operations and Comprehensive Income. However, where these taxes are imposed on the Registrants, such as gross receipts taxes or other surcharges or fees, they are reported on a gross basis. Accordingly, revenues are recognized for the taxes collected from customers along with an offsetting expense. Se e Note 22 — Supplemental Financial Information for taxes that are presented on a gross basis.
Leases (All Registrants)	Leases (All Registrants) The Registrants recognize a ROU asset and lease liability for operating and finance leases when the term is greater than one year. Operating lease ROU assets are included in Other deferred debits and other assets and operating lease liabilities are included in Other current liabilities and Other deferred credits and other liabilities on the Consolidated Balance Sheets. Finance lease ROU assets are included in Property, plant, and equipment, net and finance lease liabilities are included in Long-term debt due within one year and Long-term debt on the Consolidated Balance Sheets. The ROU asset is measured as the sum of (1) the present value of all remaining fixed and in-substance fixed payments using the rate implicit in the lease whenever that is readily determinable or each Registrant’s incremental borrowing rate, (2) any lease payments made at or before the commencement date (less any lease incentives received), and (3) any initial direct costs incurred. The lease liability is measured the same as the ROU asset, but excludes any payments made before the commencement date and initial direct costs incurred. Lease terms include options to extend or terminate the lease if it is reasonably certain they will be exercised. The Registrants include non-lease components, which are service-related costs that are not integral to the use of the asset, in the measurement of the ROU asset and lease liability. Expense for operating leases and leases with a term of one year or less is recognized on a straight-line basis over the term of the lease, unless another systematic and rational basis is more representative of the derivation of benefit from use of the leased property. Variable lease payments are recognized in the period in which the related obligation is incurred. Operating lease expense, finance lease expense, and variable lease payments are primarily recorded to Operating and maintenance expense on the Registrants’ Statements of Operations and Comprehensive Income. Income from operating leases, including subleases, is recognized on a straight-line basis over the term of the lease, unless another systematic and rational basis is more representative of the pattern in which income is earned over the term of the lease. Variable lease income is recognized in the period in which the related obligation is performed. Operating lease income and variable lease income are recorded to Operating revenues on the Registrants’ Statements of Operations and Comprehensive Income. The Registrants’ operating and finance leases consist primarily of real estate, including office buildings, and vehicles and equipment. The Registrants account for land right arrangements that provide for exclusive use as leases while shared use land arrangements are generally not leases. The Registrants do not account for secondary use pole attachments as leases. See Note 10 — Leases for additional information.
Income Taxes (All Registrants)	Income Taxes (All Registrants) Deferred federal and state income taxes are recorded on significant temporary differences between the book and tax basis of assets and liabilities and for tax benefits carried forward. Investment tax credits have been deferred in the Registrants’ Consolidated Balance Sheets and are recognized in book income over the life of the related property. The Registrants account for uncertain income tax positions using a benefit recognition model with a two-step approach; a more-likely-than-not recognition criterion; and a measurement approach that measures the position as the largest amount of tax benefit that is greater than 50% likely of being realized upon ultimate settlement. If it is not more-likely-than-not that the benefit of the tax position will be sustained on its technical merits, no benefit is recorded. Uncertain tax positions that relate only to timing of when an item is included on a tax return are considered to have met the recognition threshold. The Registrants recognize accrued interest related to unrecognized tax benefits in Interest expense, net or Other, net (interest income) and recognize penalties related to unrecognized tax benefits in Other, net in their Consolidated Statements of Operations and Comprehensive Income.
Cash and Cash Equivalents (All Registrants)	Cash and Cash Equivalents (All Registrants) The Registrants consider investments purchased with an original maturity of three months or less to be cash equivalents. Restricted Cash and Cash Equivalents (All Registrants) Restricted cash and cash equivalents represent funds that are restricted to satisfy designated current liabilities. As of December 31, 2024 and 2023, the Registrants' restricted cash and cash equivalents primarily represented the following items: Registrant (a) Description Exelon Payment of medical, dental, vision, and long-term disability benefits, in addition to the items listed below for the Utility Registrants. ComEd Collateral held from suppliers associated with energy and REC procurement contracts, any over-recovered RPS costs and alternative compliance payments received from RES pursuant to FEJA, and costs for the remediation of an MGP site. PECO Proceeds from the sales of assets that were subject to PECO’s mortgage indenture. BGE Proceeds from the loan program for the completion of certain energy efficiency measures and collateral held from energy suppliers. PHI (a) Payment of merger commitments and collateral held from its energy suppliers associated with procurement contracts. Pepco Payment of merger commitments and collateral held from energy suppliers. DPL Collateral held from energy suppliers. __________ (a) As of December 31, 2024 and 2023, ACE had no restricted cash and cash equivalents. Restricted cash and cash equivalents not available to satisfy current liabilities are classified as noncurrent assets. As of December 31, 2024 and 2023, the Registrants' noncurrent restricted cash and cash equivalents primarily represented ComEd’s over-recovered RPS costs and alternative compliance payments received from RES pursuant to FEJA and costs for the remediation of an MGP site and are included in other deferred debits and other assets. See Note 16 — Debt and Credit Agreements and Note 22 — Supplemental Financial Information for additional information.
Allowance for Credit Losses on Customer Receivables (All Registrants)	Allowance for Credit Losses on Customer Receivables (All Registrants) The allowance for credit losses reflects the Registrants’ best estimates of losses on the customers' accounts receivable balances based on historical experience, current information, and reasonable and supportable forecasts. The allowance for credit losses is estimated based on historical experience, current conditions, and forward-looking risk factors. Utility Registrants' customer accounts are written off consistent with approved regulatory requirements. Adjustments to the allowance for credit losses are primarily recorded to Operating and maintenance expense on the Registrants' Consolidated Statements of Operations and Comprehensive Income or Regulatory assets and liabilities on the Registrants' Consolidated Balance Sheets. See Note 3 — Regulatory Matters for additional information regarding the regulatory recovery of credit losses on customer accounts receivable. The Registrants have certain non-customer receivables in Other deferred debits and other assets which primarily are with governmental agencies and other high-quality counterparties with no history of default. As such, the allowance for credit losses related to these receivables is not material. The Registrants monitor these balances and will record an allowance if there are indicators of a decline in credit quality. See Note 6 — Accounts Receivable for additional information.
Inventories (All Registrants)	Inventories (All Registrants) Inventory is recorded at the lower of weighted average cost or net realizable value. Provisions are recorded for excess and obsolete inventory. Fossil fuel and Materials and supplies are generally included in inventory when purchased. Fossil fuel is expensed to Purchased power and fuel expense when used or sold. Materials and supplies generally includes transmission and distribution materials and are expensed to Operating and maintenance or capitalized to Property, plant, and equipment, as appropriate, when installed or used.
Property Plant And Equipment (All Registrants)	Property, Plant, and Equipment (All Registrants) Property, plant, and equipment is recorded at original cost. Original cost includes construction-related direct labor and material costs and indirect construction costs including labor and related costs of departments associated with supporting construction activities. When appropriate, original cost also includes AFUDC for regulated property at the Utility Registrants. The cost of repairs and maintenance and minor replacements of property is charged to Operating and maintenance expense as incurred. Third parties reimburse the Utility Registrants for all or a portion of expenditures for certain capital projects. Such contributions in aid of construction costs (CIAC) are recorded as a reduction to Property, plant, and equipment, net. Upon retirement, the cost of property, net of salvage, is charged to accumulated depreciation consistent with the composite and group methods of depreciation. Depreciation expense at ComEd, BGE, Pepco, DPL, and ACE includes the estimated cost of dismantling and removing plant from service upon retirement. Actual incurred removal costs are applied against a related regulatory liability or recorded to a regulatory asset if in excess of previously collected removal costs. PECO’s removal costs are capitalized to accumulated depreciation when incurred and recorded to depreciation expense over the life of the new asset constructed consistent with PECO’s regulatory recovery method. Capitalized Software. Certain costs, such as design, coding, and testing incurred during the application development stage of software projects that are internally developed or purchased for operational use are capitalized within Property, plant, and equipment. Similar costs incurred for cloud-based solutions treated as service arrangements are capitalized within Other Current Assets and Deferred Debits and Other Assets. Such capitalized amounts are amortized ratably over the expected lives of the projects when they become operational, generally not to exceed five years. Certain other capitalized software costs are being amortized over longer lives based on the expected life or pursuant to prescribed regulatory requirements. AFUDC. AFUDC is the cost, during the period of construction, of debt and equity funds used to finance construction projects for regulated operations. AFUDC is recorded to construction work in progress and as a non-cash credit to an allowance that is included in interest expense for debt-related funds and other income and deductions for equity-related funds. The rates used for capitalizing AFUDC are computed under a method prescribed by regulatory authorities. See Note 7 — Property, Plant, and Equipment, Note 8 — Jointly Owned Electric Utility Plant and Note 22 — Supplemental Financial Information for additional information.
Depreciation and Amortization (All Registrants)	Depreciation and Amortization (All Registrants) Depreciation is generally recorded over the estimated service lives of property, plant, and equipment on a straight-line basis using the group or composite methods of depreciation. The group approach is typically for groups of similar assets that have approximately the same useful lives and the composite approach is used for dissimilar assets that have different lives. Under both methods, a reporting entity depreciates the assets over the average life of the assets in the group. ComEd, BGE, Pepco, DPL, and ACE's depreciation expense includes the estimated cost of dismantling and removing plant from service upon retirement, which is consistent with each utility's regulatory recovery method. PECO's removal costs are capitalized to accumulated depreciation when incurred and recorded to depreciation expense over the life of the new asset constructed consistent with PECO's regulatory recovery method. The estimated service lives for the Registrants are based on a combination of depreciation studies and historical retirements. See Note 7 — Property, Plant, and Equipment for additional information regarding depreciation. Amortization of regulatory assets and liabilities are recorded over the recovery or refund period specified in the related legislation or regulatory order or agreement. When the recovery or refund period is less than one year, amortization is recorded to the line item in which the deferred cost or income would have originally been recorded in the Registrants’ Consolidated Statements of Operations and Comprehensive Income. Amortization of ComEd’s electric distribution rate reconciliations and energy efficiency formula rate regulatory assets and the Utility Registrants' transmission formula rate regulatory assets is recorded to Operating revenues. Amortization of income tax related regulatory assets and liabilities is generally recorded to Income tax expense. Except for the regulatory assets and liabilities discussed above, amortization is generally recorded to Depreciation and amortization in the Registrants’ Consolidated Statements of Operations and Comprehensive Income when the recovery period is more than one year. See Note 3 — Regulatory Matters and Note 22 — Supplemental Financial Information for additional information regarding the amortization of the Registrants' regulatory assets.
Asset Retirement Obligations (All Registrants)	Asset Retirement Obligations (All Registrants) The Registrants estimate and recognize a liability for their legal obligation to perform asset retirement activities even though the timing and/or methods of settlement may be conditional on future events. The Registrants update their AROs either annually or on a rotational basis at least once every three years, based on a risk profile, unless circumstances warrant more frequent updates. The updates factor in new cost estimates, credit-adjusted, risk-free rates (CARFR) and escalation rates, and the timing of cash flows. AROs are accreted throughout each year to reflect the time value of money for these present value obligations through an increase to Regulatory assets. See Note 9 — Asset Retirement Obligations for additional information.
Guarantees (All Registrants)	Guarantees (All Registrants) If necessary, the Registrants recognize a liability at the time of issuance of a guarantee for the fair value of the obligations they have undertaken. The liability is reduced or eliminated as the Registrants are released from risk under the guarantee. Depending on the nature of the guarantee, the release from risk of the Registrant may be recognized only upon the expiration or settlement of the guarantee or by a systematic and rational amortization method over the term of the guarantee. See Note 18 — Commitments and Contingencies for additional information.
Asset Impairments	Asset Impairments Long-Lived Assets (All Registrants). The Registrants evaluate the carrying value of long-lived assets for recoverability whenever events or changes in circumstances indicate that the carrying value of those assets may not be recoverable. Indicators of impairment may include specific regulatory disallowance, abandonment, or plans to dispose of a long-lived asset significantly before the end of its useful life. When the estimated undiscounted future cash flows attributable to the long-lived asset may not be recoverable, the amount of the impairment loss is determined by measuring the excess of the carrying amount of the long-lived asset over its fair value. Goodwill (Exelon, ComEd, and PHI). Goodwill represents the excess of the purchase price paid over the estimated fair value of the net assets acquired and liabilities assumed in the acquisition of a business. Goodwill is not amortized but is assessed for impairment at least annually or on an interim basis if an event occurs or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying value. See Note 12 — Intangible Assets for additional information.
Derivatives Financial Instruments (All Registrants)	Derivative Financial Instruments (All Registrants) Derivatives are recognized on the balance sheet at their fair value unless they qualify for certain exceptions, including NPNS. For derivatives that qualify and are designated as cash flow hedges, changes in fair value each period are initially recorded in AOCI and recognized in earnings when the underlying hedged transaction affects earnings. Amounts recognized in earnings are recorded in Interest expense, net on the Consolidated Statement of Operations and Comprehensive Income based on the activity the transaction is economically hedging. Cash inflows and outflows related to derivative instruments designated as cash flow hedges are included as a component of operating, investing, or financing cash flows in the Consolidated Statements of Cash Flows, depending on the nature of each transaction. For derivatives intended to serve as economic hedges, which are not designated for hedge accounting, changes in fair value each period are recognized in earnings or as a regulatory asset or liability. Amounts recognized in earnings are recorded in Electric operating revenues, Purchased power and fuel, or Interest expense in the Consolidated Statements of Operations and Comprehensive Income based on the activity the transaction is economically hedging. Changes in fair value are also recorded as a regulatory asset or liability when there is an ability to recover or return the associated costs or benefits in accordance with regulatory requirements. Cash inflows and outflows related to derivative instruments are included as a component of operating, investing, or financing cash flows in the Consolidated Statements of Cash Flows, depending on the nature of the hedged item. See Note 3 — Regulatory Matters and Note 15 — Derivative Financial Instruments for additional information.
Retirement Benefits (All Registrants)	Retirement Benefits (All Registrants) Exelon sponsors defined benefit pension plans and OPEB plans.
New Accounting Standards (All Registrants)	New Accounting Standards (All Registrants) New Accounting Standards Adopted in 2024: In 2024, the Registrants adopted the following new FASB authoritative accounting guidance. Segment Reporting (Issued November 2023). Improves reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. The objective of the revised guidance is to introduce a new requirement to disclose significant segment expenses regularly provided to the CODM, extend certain annual disclosures to interim periods, clarify single reportable segment entities must apply ASC 280 in its entirety, permit more than one measure of segment profit or loss to be reported under certain conditions, and require disclosure of the title and position of the CODM. The standard is effective for annual periods beginning January 1, 2024 and interim periods beginning January 1, 2025. The standard is required to be applied retrospectively. The Registrants' adoption of this guidance in the fourth quarter of 2024 resulted in expanded significant segment expenses and enhanced qualitative disclosures regarding the CODMs title and use of the Net income (loss) from continuing operations profitability measure. See Note 5 — Segment Information for additional information. New Accounting Standards Issued and Not Yet Adopted as of December 31, 2024: The following new authoritative accounting guidance issued by the FASB has not yet been adopted and reflected by the Registrants in their consolidated financial statements as of December 31, 2024. Unless otherwise indicated, the Registrants are currently assessing the impacts such guidance may have (which could be material) in their Consolidated Balance Sheets, Consolidated Statements of Operations and Comprehensive Income, Consolidated Statements of Cash Flows and disclosures, as well as the potential to early adopt where applicable. The Registrants have assessed other FASB issuances of new standards which are not listed below given the current expectation that such standards will not significantly impact the Registrants' financial reporting. Improvement to Income Tax Disclosures (Issued December 2023). Provides additional disclosure requirements related to the effective tax rate reconciliation and income taxes paid. Under the revised guidance for the effective tax reconciliations, entities would be required to disclose: (1) eight specific categories in the effective tax rate reconciliation in both percentages and reporting currency amount, (2) additional information for reconciling items over a certain threshold, (3) explanation of individual reconciling items disclosed, and (4) provide a qualitative description of the state and local jurisdictions that contribute to the majority of the state income tax expense. For each annual period presented, the new standard requires disclosure of the year-to-date amount of income taxes paid (net of refunds received) disaggregated by federal, state, and foreign. It also requires additional disaggregated information on income taxes paid (net of refunds received) to an individual jurisdiction equal to or greater than 5% of total income taxes paid (net of refunds received). The standard is effective January 1, 2025, with early adoption permitted. Disaggregation of Income Statement Expenses (Issued November 2024).

Discontinued Operations (Tables

Discontinued Operations (Tables) - Exelon Generation Co L L C	12 Months Ended
	Dec. 31, 2024
Business Dispositions [Line Items]
Discontinued Operations - Income Statement	The following table presents the results of Constellation that have been reclassified from continuing operations and included in discontinued operations within Exelon’s Consolidated Statements of Operations and Comprehensive Income for the year ended December 31, 2022. These results are primarily Generation, which is comprised of Exelon’s Mid-Atlantic, Midwest, New York, ERCOT, and Other Power Regions reportable segments, and include the impact of transaction costs, certain BSC costs, including any transition costs, that were historically allocated and directly attributable to Generation, transactions between Generation and the Utility Registrants, and tax-related adjustments. Transaction costs include costs for external bankers, accountants, appraisers, lawyers, external counsels and other advisors, among others, who are involved in the negotiation, appraisal, due diligence and regulatory approval of the separation. Transition costs are primarily employee-related costs such as recruitment expenses, costs to establish certain stand-alone functions and information technology systems, professional services fees, and other separation-related costs during the transition to separate Generation. For the purposes of reporting discontinued operations, these results also include transactions between Generation and the Utility Registrants that were historically eliminated within Exelon’s Consolidated Statements of Operations, as these transactions will be ongoing after the separation. Certain BSC costs that were historically allocated to Generation are presented as part of continuing operations in Exelon’s Consolidated Statements of Operations as these costs do not qualify as expenses of the discontinued operations per the accounting rules. For the Year Ended December 31, 2022 Operating revenues Competitive business revenues $ 1,855 Competitive business revenues from affiliates 161 Total operating revenues 2,016 Operating expenses Competitive businesses purchased power and fuel 1,138 Operating and maintenance (a) 371 Depreciation and amortization 94 Taxes other than income taxes 44 Total operating expenses 1,647 Gain on sales of assets and businesses 10 Operating income 379 Other income and (deductions) Interest expense, net (20) Other, net (281) Total other income and (deductions) (301) Income before income taxes 78 Income taxes (40) Equity in losses of unconsolidated affiliates (1) Net income 117 Net income attributable to noncontrolling interests 1 Net income from discontinued operations $ 116 __________ (a) Includes transaction and transition costs related to the separation of $52 million for the year ended December 31, 2022.
Discontinued Operations - Cash Flows	The following table presents selected financial information regarding cash flows of the discontinued operations that are included within Exelon’s Consolidated Statements of Cash Flows for the year ended December 31, 2022. For the Year Ended December 31, 2022 Non-cash items included in net income from discontinued operations: Depreciation, amortization, and accretion, including nuclear fuel and energy contract amortization $ 207 Loss on sales of assets and businesses 9 Deferred income taxes and amortization of investment tax credits (143) Net fair value changes related to derivatives (59) Net realized and unrealized losses on NDT fund investments 205 Net unrealized losses on equity investments 16 Other decommissioning-related activity 36 Cash flows from investing activities: Capital expenditures (227) Collection of DPP 169 Supplemental cash flow information: Decrease in capital expenditures not paid $ (128) Increase in DPP 348 Increase in PP&E related to ARO update 335

Regulatory Matters (Tables)

Regulatory Matters (Tables)	12 Months Ended
	Dec. 31, 2024
Regulated Operations [Abstract]
Public Utilities Distribution Rate Cases	The following tables show the completed and pending distribution base rate case proceedings in 2024. Completed Distribution Base Rate Case Proceedings Registrant/Jurisdiction Filing Date Service Requested Revenue Requirement Increase Approved Revenue Requirement Increase Approved ROE Approval Date Rate Effective Date ComEd - Illinois January 17, 2023 (a) Electric $ 1,487 $ 1,045 8.905% December 19, 2024 January 1, 2024 April 26, 2024 (amended on September 11, 2024) (b) Electric $ 624 $ 623 9.89% October 31, 2024 January 1, 2025 PECO - Pennsylvania March 28, 2024 Electric (c)(d) $464 $ 354 N/A (e) December 12, 2024 January 1, 2025 Natural Gas (d) $111 $ 78 BGE - Maryland February 17, 2023 (f) Electric $ 313 $ 179 9.50% December 14, 2023 January 1, 2024 Natural Gas $ 289 $ 229 9.45% Pepco - District of Columbia (g) April 13, 2023 (amended February 27, 2024) Electric $ 186 $ 123 9.50% November 26, 2024 January 1, 2025 Pepco - Maryland October 26, 2020 (amended March 31, 2021) (h) Electric $ 104 $ 52 9.55% June 28, 2021 June 28, 2021 May 16, 2023 (amended February 23, 2024) (i) Electric $ 111 $ 45 9.50% June 10, 2024 April 1, 2024 DPL - Maryland (j) May 19, 2022 Electric $ 38 $ 29 9.60% December 14, 2022 January 1, 2023 DPL - Delaware (k) December 15, 2022 (amended September 29, 2023) Electric $ 39 $ 28 9.60% April 18, 2024 July 15, 2023 ACE - New Jersey (l) February 15, 2023 (amended August 21, 2023) Electric $ 92 $ 45 9.60% November 17, 2023 December 1, 2023 __________ (a) Reflects a four-year cumulative multi-year rate plan for January 1, 2024 to December 31, 2027. The MRP was originally approved by the ICC on December 14, 2023 and was subsequently amended on January 10, 2024, April 18, 2024 and December 19, 2024. The December 19, 2024 order provided a total revenue requirement increase of $1.045 billion inclusive of rate increases of approximately $752 million in 2024, $80 million in 2025, $102 million in 2026, and $111 million in 2027. (b) On October 31, 2024, the Delivery Reconciliation Amount for 2023 defined in Rider Delivery Service Pricing Reconciliation (Rider DSPR) was approved. Rider DSPR allows for the reconciliation of the revenue requirement in effect in the final years in which formula rates are determined and until such time as new rates are established under ComEd's approved MRP. The 2024 order reconciled the delivery service rates in effect in 2023 with the actual delivery service costs incurred in 2023. The reconciliation revenue requirement provides for a weighted average debt and equity return on distribution rate base of 7.02%, inclusive of an allowed ROE of 9.89%, reflecting the monthly yields on 30-year treasury bonds plus 580 basis points. (c) PECO’s approved annual electric revenue requirement increase of $354 million is partially offset by a one-time credit of $64 million in 2025. In addition, the PAPUC approved the recovery of storm damage costs incurred by PECO in January 2024, up to $23 million, subject to review for reasonableness and prudency in PECO’s next distribution rate case. (d) On December 12, 2024, the PAPUC issued their Opinions and Orders which approved the non-unanimous partial settlements with limited modifications for both the electric and natural gas base rate cases, and denied the Weather Normalization Adjustment requested in the natural gas base rate case. (e) The PECO electric and natural gas base rate case proceedings were resolved through settlement agreements, which did not specify an approved ROE. (f) Reflects a three-year cumulative multi-year plan for January 1, 2024 through December 31, 2026. The MDPSC awarded BGE electric revenue requirement increases of $41 million, $113 million, and $25 million in 2024, 2025, and 2026, respectively, and natural gas revenue requirement increases of $126 million, $62 million, and $41 million in 2024, 2025, and 2026, respectively. Requested revenue requirement increases will be used to recover capital investments designed to increase the resilience of the electric and gas distribution systems and support Maryland's climate and regulatory initiatives. The MDPSC also approved a portion of the requested 2021 and 2022 reconciliation amounts, which will be recovered through separate electric and gas riders between March 2024 and February 2025. As such, the reconciliation amounts are not included in the approved revenue requirement increases. The 2021 reconciliation amounts are $13 million and $7 million for electric and gas, respectively, and the 2022 reconciliation amounts are $39 million and $15 million for electric and gas, respectively. In April 2024, BGE filed with the MDPSC its request for recovery of the 2023 reconciliation amounts of $79 million and $73 million for electric and gas, respectively, with supporting testimony and schedules. (g) Reflects a two-year cumulative multi-year plan for January 1, 2025, through December 31, 2026. The DCPSC awarded Pepco electric incremental revenue requirement increases of $99 million and $24 million for 2025 and 2026, respectively. (h) Reflects a three-year cumulative multi-year plan for April 1, 2021 through March 31, 2024. The MDPSC awarded Pepco electric incremental revenue requirement increases of $21 million, $16 million, and $15 million, before offsets, for the 12-month periods ending March 31, 2022, 2023, and 2024, respectively. Pepco proposed to utilize certain tax benefits to fully offset the increase through 2023 and partially offset customer rate increases in 2024. However, the MDPSC only utilized the acceleration of refunds for certain tax benefits to fully offset the increases such that customer rates remain unchanged through March 31, 2022. On February 23, 2022, the MDPSC chose to offset 25% of the cumulative revenue requirement increase through March 31, 2023. In 2021, the MDPSC deferred a decision on whether to use certain tax benefits to offset the revenue requirement increases for the 12-month period ending March 31, 2024. In December 2022 Pepco proposed that tax benefits not be used to offset the revenue requirement increases for this period. On January 25, 2023, the MDPSC accepted Pepco’s recommendations not to use tax benefits to offset revenue requirement increases for the 12-month period ending March 31, 2024. (i) Reflects the amounts requested (before offsets) and awarded for a one-year multi-year plan for April 1, 2024 through March 31, 2025. The MDPSC awarded Pepco an electric incremental revenue requirement increase of $45 million for the 12-month period ending March 31, 2025. The MDPSC did not adopt the requested revenue requirement increases of $80 million (before offsets), $51 million, and $14 million as filed for 2025, 2026, and the 2027 nine-month extension period, respectively. The order allows for Pepco to perform an annual reconciliation after the 2024 rate year. The MDPSC also approved the requested reconciliation amounts for the 12-month periods ending March 31, 2022, and March 31, 2023, which will be recovered through a rider between August 2024 through March 2026. As such, the reconciliation amounts are not included in the approved revenue requirement increases. The reconciliation amounts are $1 million, and $7 million, for the 12-month periods ending March 31, 2022, and March 31, 2023, respectively. In July 2024, Pepco filed its request with the MDPSC for recovery of $31 million for the 12-month period ended March 31, 2024, with supporting testimony and schedules. (j) Reflects a three-year cumulative multi-year plan for January 1, 2023 through December 31, 2025. The MDPSC awarded DPL electric incremental revenue requirement increases of $17 million, $6 million, and $6 million for 2023, 2024, and 2025, respectively. (k) On April 18, 2024, the DEPSC approved the Significant Storm Expense Rate Rider (Rider SSER) which will allow DPL to recover expenses associated with qualified storms. A qualified storm will be an individual storm for which DPL incurs expenses between $5 million and $15 million. The Rider SSER allows DPL to recover significant storm damage expenses for the previous 12-month period over a future 24-month period. For individual storm events for which DPL incurs expenses of more than $15 million, the future recovery period will be evaluated on a case-by-case basis and the unamortized balance will earn a return at DPL's authorized long-term cost of debt. The Rider SSER will have an annual true-up filing, subject to DEPSC review and approval. (l) Requested and approved increases are before New Jersey sales and use tax. The NJBPU awarded ACE electric revenue requirement increases of $36 million and $9 million effective December 1, 2023 and February 1, 2024, respectively.
Public Utilities Distribution Rate Cases, Pending	Pending Distribution Base Rate Case Proceedings Registrant/Jurisdiction Filing Date Service Requested Revenue Requirement Increase Requested ROE Expected Approval Timing DPL - Delaware (a) September 20, 2024 Natural Gas $ 36 10.65% First quarter of 2026 ACE - New Jersey (b) November 21, 2024 Electric $ 109 10.70% Fourth quarter of 2025 __________ (a) DPL can implement interim rates on April 20, 2025, subject to refund. (b) Requested increases are before New Jersey sales and use tax. ACE intends to put rates into effect on August 21, 2025, subject to refund.
Public Utilities Transmission Rate Filings	For 2024, the following increases/(decreases) were included in the Utility Registrants' electric transmission formula rate updates: Registrant (a) Initial Revenue Requirement Increase Annual Reconciliation (Decrease) Increase Total Revenue Requirement Increase Allowed Return on Rate Base (b) Allowed ROE (c) ComEd $ 32 $ (12) $ 20 8.14 % 11.50 % PECO $ 2 $ 3 $ 5 7.45 % 10.35 % BGE $ 42 $ 13 $ 53 (d) 7.47 % 10.50 % Pepco $ 58 $ 15 $ 73 7.62 % 10.50 % DPL $ 7 $ 17 $ 24 7.23 % 10.50 % ACE $ 14 $ 18 $ 32 7.11 % 10.50 % __________ (a) All rates are effective June 1, 2024 - May 31, 2025, subject to review by interested parties pursuant to review protocols of each Utility Registrants' tariffs. (b) Represents the weighted average debt and equity return on transmission rate bases. For PECO, the common equity component of the ratio used to calculate the weighted average debt and equity return on the transmission formula rate base is currently capped at 55.75%. (c) The rate of return on common equity for each Utility Registrant includes a 50-basis-point incentive adder for being a member of an RTO. (d) The increase in BGE's transmission revenue requirement includes a $2 million reduction related to a FERC-approved dedicated facilities charge to recover the costs of providing transmission service to specifically designated load by BGE.
Public Utilities Energy Efficiency Revenue	During 2024, the ICC approved the following total increases in ComEd's requested energy efficiency revenue requirement: Filing Date Requested Revenue Requirement Increase Approved Revenue Requirement Increase (a) Approved ROE Approval Date Rate Effective Date May 30, 2024 $ 58 $ 58 9.89 % December 5, 2024 January 1, 2025 _________ (a) ComEd's 2025 approved revenue requirement above reflects an increase of $66 million for the initial year revenue requirement for 2025 and a decrease of $8 million related to the annual reconciliation for 2023. The revenue requirement for 2025 provides for a weighted average debt and equity return on the energy efficiency regulatory asset and rate base of 7.02% inclusive of an allowed ROE of 9.89%, reflecting the monthly average yields for 30-year treasury bonds plus 580 basis points. The revenue requirement for the 2023 reconciliation year provides for a weighted average debt and equity return on the energy efficiency regulatory asset and rate base of 7.24% inclusive of an allowed ROE of 10.34%, which includes an upward performance adjustment that increased the ROE. The performance adjustment can either increase or decrease the ROE based upon the achievement of energy efficiency savings goals. See table below for ComEd's regulatory assets associated with its energy efficiency formula rate.
Schedule of Regulatory Assets	The following tables provide information about the regulatory assets and liabilities of the Registrants at December 31, 2024 and 2023: December 31, 2024 Exelon ComEd PECO BGE PHI Pepco DPL ACE Regulatory assets AMI programs - deployment costs $ 82 $ — $ — $ 29 $ 53 $ 11 $ 13 $ 29 AMI programs - legacy meters 90 13 — 4 73 30 10 33 Asset retirement obligations 173 112 23 26 12 8 3 1 Carbon mitigation credit 179 179 — — — — — — COVID-19 59 3 — 4 52 49 3 — DC PLUG charge 1 — — — 1 1 — — Deferred income taxes 937 — 925 — 12 12 — — Deferred storm costs 125 — 23 73 29 8 1 20 Electric distribution formula rate annual reconciliations 554 554 — — — — — — Electric distribution formula rate significant one-time events 98 98 — — — — — — Electric energy and natural gas costs 108 — — 38 70 18 20 32 Energy efficiency and demand response programs 652 — 10 329 313 174 72 67 Energy efficiency costs 1,890 1,890 — — — — — — Fair value of long-term debt 457 — — — 362 — — — Fair value of PHI's unamortized energy contracts 26 — — — 26 — — — MGP remediation costs 307 275 18 14 — — — — Multi-year plan reconciliations 170 81 — 66 23 23 — — Pension and OPEB 2,382 — — — — — — — Pension and OPEB - merger related 503 — — — — — — — Removal costs 869 — — 261 608 127 127 356 Renewable energy 131 131 — — — — — — Transmission formula rate annual reconciliations 94 — 15 30 49 37 12 — Under-recovered credit loss expense 147 126 — — 21 — — 21 Under-recovered revenue decoupling 188 — — 98 90 60 — 30 Universal service fund charge under-recovery - Electric 19 — 19 — — — — — Zero emission credit 4 4 — — — — — — Other 405 255 35 23 99 45 14 14 Total regulatory assets 10,650 3,721 1,068 995 1,893 603 275 603 Less: current portion 1,940 1,159 65 207 323 157 60 101 Total noncurrent regulatory assets $ 8,710 $ 2,562 $ 1,003 $ 788 $ 1,570 $ 446 $ 215 $ 502 December 31, 2023 Exelon ComEd PECO BGE PHI Pepco DPL ACE Regulatory assets AMI programs - deployment costs $ 109 $ — $ — $ 49 $ 60 $ 18 $ 17 $ 25 AMI programs - legacy meters 127 28 — 12 87 41 14 32 Asset retirement obligations 159 104 22 23 10 6 2 2 Carbon mitigation credit 673 673 — — — — — — COVID-19 41 11 11 6 13 10 3 — DC PLUG charge 3 — — — 3 3 — — Deferred income taxes 759 — 748 — 11 11 — — Deferred storm costs 114 — — 84 30 9 2 19 Electric distribution formula rate annual reconciliations 787 787 — — — — — — Electric distribution formula rate significant one-time events 89 89 — — — — — — Electric energy and natural gas costs 98 — 1 25 72 11 2 59 Energy efficiency and demand response programs 631 — 23 316 292 187 73 32 Energy efficiency costs 1,691 1,691 — — — — — — Fair value of long-term debt 486 — — — 385 — — — Fair value of PHI's unamortized energy contracts 35 — — — 35 — — — MGP remediation costs 315 286 15 14 — — — — Multi-year plan reconciliations 112 — — 112 — — — — Pension and OPEB 2,254 — — — — — — — Pension and OPEB - merger related 637 — — — — — — — Removal costs 827 — — 219 608 137 118 354 Renewable energy 134 134 — — — — — — Transmission formula rate annual reconciliations 75 — 9 5 61 15 22 24 Under-recovered credit loss expense 112 78 — — 34 — — 34 Under-recovered revenue decoupling 176 — — 64 112 100 — 12 Universal service fund charge under-recovery - Electric 59 — 59 — — — — — Zero emission credit 58 58 — — — — — — Other 352 190 32 27 111 52 19 15 Total regulatory assets 10,913 4,129 920 956 1,924 600 272 608 Less: current portion 2,215 1,335 127 229 337 150 54 125 Total noncurrent regulatory assets $ 8,698 $ 2,794 $ 793 $ 727 $ 1,587 $ 450 $ 218 $ 483
Schedule of Regulatory Liabilities	December 31, 2024 Exelon ComEd PECO BGE PHI Pepco DPL ACE Regulatory liabilities Decommissioning the Regulatory Agreement Units $ 4,027 $ 3,780 $ 247 $ — $ — $ — $ — $ — Dedicated facilities charge 143 — — 143 — — — — Deferred income taxes 2,756 1,607 — 484 665 285 247 133 Electric energy and natural gas costs 108 12 81 — 15 8 7 — Energy efficiency and demand response programs 1 — 1 — — — — — Fiber Refund 16 — 16 — — — — — Multi-year plan reconciliations 9 — — — 9 — 9 — Over-recovered revenue decoupling 2 — — — 2 — 2 — Removal costs 1,958 1,841 — 11 106 20 86 — Renewable portfolio standards costs 1,369 1,369 — — — — — — Transmission formula rate annual reconciliations 14 — — — 14 — — 14 Other 206 9 30 10 52 14 16 9 Total regulatory liabilities 10,609 8,618 375 648 863 327 367 156 Less: current portion 411 197 122 12 69 17 42 10 Total noncurrent regulatory liabilities $ 10,198 $ 8,421 $ 253 $ 636 $ 794 $ 310 $ 325 $ 146 December 31, 2023 Exelon ComEd PECO BGE PHI Pepco DPL ACE Regulatory liabilities Decommissioning the Regulatory Agreement Units $ 3,232 $ 2,954 $ 278 $ — $ — $ — $ — $ — Dedicated facilities charge 129 — — 129 — — — — Deferred income taxes 3,284 1,900 — 634 750 338 274 138 Electric energy and natural gas costs 121 4 93 — 24 9 15 — Energy efficiency and demand response programs 1 — 1 — — — — — Fiber Refund 15 — 15 — — — — — Multi-year plan reconciliations 23 — — — 23 16 7 — Over-recovered revenue decoupling 2 — — — 2 — 2 — Removal costs 1,845 1,701 — 28 116 20 96 — Renewable portfolio standards costs 1,102 1,102 — — — — — — Other 211 23 19 9 60 14 21 8 Total regulatory liabilities 9,965 7,684 406 800 975 397 415 146 Less: current portion 389 191 92 27 71 15 50 6 Total noncurrent regulatory liabilities $ 9,576 $ 7,493 $ 314 $ 773 $ 904 $ 382 $ 365 $ 140
Description of Regulatory Assets and Liabilities	Descriptions of the regulatory assets and liabilities included in the tables above are summarized below, including their recovery and amortization periods. Line Item Description End Date of Remaining Recovery/Refund Period Return AMI programs - deployment costs Represents installation and ongoing incremental costs of new smart meters, including implementation costs at Pepco and DPL of dynamic pricing for energy usage resulting from smart meters. BGE - 2026 Pepco - 2029 DPL - 2030 ACE - 2029 BGE, Pepco, DPL - Yes ACE - Yes, on incremental costs of new smart meters AMI programs - legacy meters Represents early retirement costs of legacy meters. ComEd - 2028 BGE - 2026 Pepco - 2029 DPL - 2030 ACE - To be determined in next distribution rate case filed with NJBPU. ComEd, Pepco (District of Columbia), DPL (Delaware), ACE - Yes BGE, Pepco (Maryland), DPL (Maryland) - No Asset retirement obligations Represents future legally required removal costs associated with existing AROs. Over the life of the related assets. Yes, once the removal activities have been performed Carbon mitigation credit Represents CMC procurement costs and credits as well as reasonable costs ComEd has incurred to implement and comply with the CMC procurement process. 2025 No Line Item Description End Date of Remaining Recovery/Refund Period Return COVID-19 Represents incremental credit losses and direct costs related to COVID-19 incurred primarily in 2020 at the Utility Registrants, partially offset by a decrease in travel costs at BGE, Pepco and DPL. Direct costs consisted primarily of costs to acquire personal protective equipment, costs for cleaning supplies and services, and costs to hire healthcare professionals to monitor the health of employees. This also includes under-recovered amounts due to COVID-19 that were previously deferred under Pepco’s revenue decoupling program. ComEd - 2025 BGE - 2028 PECO - 2024 Pepco (District of Columbia) - $42 million - 2034 Pepco (Maryland) - $7 million - 2029 DPL (Maryland) - $1 million - 2027 DPL (Delaware) - $2 million - 2028 ComEd, BGE, Pepco, and DPL (Maryland) - Yes PECO and DPL (Delaware) - No DC PLUG charge Represents costs associated with DC PLUG, which is a projected six-year, $500 million project to place underground some of the District of Columbia’s most outage-prone power lines with $250 million of the project costs funded by Pepco and $250 million funded by the District of Columbia. Rates for the DC PLUG initiative went into effect on February 7, 2018. 2024 Portion of asset funded by Pepco-Yes Decommissioning the Regulatory Agreement Units Represents estimated excess funds at the end of decommissioning the Regulatory Agreement Units. See below regarding Decommissioning the Regulatory Agreement Units for additional information. Not currently being refunded. No Line Item Description End Date of Remaining Recovery/Refund Period Return Dedicated facilities charge Represents the timing difference between the recovery of certain transmission-related assets and their depreciable life. Depreciable life of the related assets. Yes Deferred income taxes Represents deferred income taxes that are recoverable or refundable through customer rates, primarily associated with accelerated depreciation, the equity component of AFUDC, and the effects of income tax rate changes, including those resulting from the TCJA. Amounts are recoverable over the period in which the related deferred income taxes reverse, which is generally based on the expected life of the underlying assets. For TCJA, generally refunded over the remaining depreciable life of the underlying assets, except in certain jurisdictions where the commissions have approved a shorter refund period for certain assets not subject to IRS normalization rules. No Deferred storm costs For Pepco, DPL, ACE, PECO and BGE, amounts represent total incremental storm restoration costs incurred due to major storm events recoverable from customers in the Maryland, New Jersey jurisdictions and Pennsylvania. Pepco - $8 million to be determined in a future multi-year plan filed with MDPSC. DPL - 2027 ACE - $4 million - 2026; $15 million to be determined in pending distribution rate case filed with NJBPU. PECO - $23 million to be determined in the next distribution rate case filed with the PAPUC. BGE - $46 million - 2028; $27 million to be determined in the next multi-year plan filed with MDPSC. Pepco, DPL, BGE - Yes ACE, PECO - No Line Item Description End Date of Remaining Recovery/Refund Period Return Electric distribution formula rate annual reconciliations Represents under/(over)-recoveries related to electric distribution service costs recoverable through ComEd's performance-based formula rate, which was updated annually with rates effective on January 1 st . 2026 Yes Electric distribution formula rate significant one-time events Represents deferred distribution service costs related to ComEd's significant one-time events (e.g., storm costs), which are recovered over 5 years from date of the event. 2028 Yes Electric energy and natural gas costs Represents under (over)-recoveries related to energy and gas supply related costs recoverable (refundable) under approved rate riders. ComEd, PECO, Pepco, DPL, ACE - 2025 BGE - 2026 DPL (Delaware), ACE - Yes ComEd, PECO, BGE, Pepco, DPL (Maryland) - No Energy efficiency and demand response programs Includes under (over)-recoveries of costs incurred related to energy efficiency programs and demand response programs and recoverable costs associated with customer direct load control and energy efficiency and conservation programs that are being recovered from customers. PECO - 2025 BGE - 2030 Pepco, DPL - 2030 ACE - 2032 BGE, Pepco (Maryland), DPL (Maryland) - See above regarding EmPOWER Maryland Cost Recovery for additional information Pepco (District of Columbia) - No DPL (Delaware), ACE - Yes PECO - Yes on capital investment recovered through this mechanism Energy efficiency costs Represents ComEd's costs recovered through the energy efficiency formula rate tariff and the reconciliation of the difference of the revenue requirement in effect for the prior year and the revenue requirement based on actual prior year costs. Deferred energy efficiency costs are recovered over the weighted average useful life of the related energy measure. 2036 Yes Line Item Description End Date of Remaining Recovery/Refund Period Return Fair value of long-term debt Represents the difference between the carrying value and fair value of long-term debt of BGE, recorded at Exelon, and PHI of $95 million and $362 million, respectively, as of December 31, 2024, and $101 million and $385 million, respectively, as of December 31, 2023, as of the 2016 PHI and 2012 Constellation merger dates. Exelon - 2036 PHI - 2045 No Fair value of PHI’s unamortized energy contracts Represents the regulatory assets recorded at Exelon and PHI offsetting the fair value adjustment related to Pepco's, DPL's, and ACE's electricity and natural gas energy supply contracts recorded at PHI as of the PHI merger date. 2036 No Fiber Refund Represents revenues collected from Generation and BSC for their use of PECO's fiber assets before the end of 2021. 2025 No MGP remediation costs Represents environmental remediation costs for MGP sites recorded at ComEd, PECO, and BGE. ComEd and PECO - Over the expected remediation period. See Note 18 — Commitments and Contingencies for additional information. BGE - 10 years from when the remediation spend occurs. ComEd and PECO - No BGE - Yes Line Item Description End Date of Remaining Recovery/Refund Period Return Multi-year plan reconciliations Represents under (over)-recoveries related to electric and gas distribution multi-year plans. ComEd - 2027 BGE - $13 million related to 2021 and 2022 reconciliations. $53 million related to 2023 and 2024 reconciliations - to be determined in a future MDPSC order. Pepco (Maryland) - $5 million related to 2023 reconciliation - 2026. $18 million related to 2024 reconciliation - to be determined in a future MDPSC order. DPL (Maryland) - $5 million related to 2023 reconciliation - 2025. $4 million related to 2024 reconciliation - to be determined in a future MDPSC order. ComEd - Yes BGE - No Pepco (Maryland) - No DPL (Maryland) - Yes Line Item Description End Date of Remaining Recovery/Refund Period Return Pension and OPEB Primarily reflects the Utility Registrants' and PHI's portion of deferred costs, including unamortized actuarial losses (gains) and prior service costs (credits), associated with Exelon's pension and OPEB plans, which are recovered through customer rates once amortized through net periodic benefit cost. Also, includes the Utility Registrants' and PHI's non–service cost components capitalized in Property, plant and equipment, net on their Consolidated Balance Sheets. The deferred costs are amortized over the plan participants' average remaining service periods subject to applicable pension and OPEB cost recognition policies. See Note 14 — Retirement Benefits for additional information. The capitalized non–service cost components are amortized over the lives of the underlying assets. No Pension and OPEB - merger related The deferred costs established at the date of the 2012 Constellation and 2016 PHI mergers are amortized over the plan participants' average remaining service periods subject to applicable pension and OPEB cost recognition policies. The costs are recovered through customer rates once amortized through net periodic benefit cost. See Note 14 — Retirement Benefits for additional information. The capitalized non–service cost components are amortized over the lives of the underlying assets. Legacy BGE - 2038 Legacy PHI - 2032 No Removal costs For BGE, Pepco, DPL, and ACE, the regulatory asset represents costs incurred to remove property, plant and equipment in excess of amounts received from customers through depreciation rates. For ComEd, BGE, Pepco, and DPL, the regulatory liability represents amounts received from customers through depreciation rates to cover the future non–legally required cost to remove property, plant and equipment, which reduces rate base for ratemaking purposes. BGE, Pepco, DPL, and ACE - Asset is generally recovered over the life of the underlying assets. ComEd, BGE, Pepco, and DPL - Liability is reduced as costs are incurred. Yes Renewable energy Represents the change in fair value of ComEd‘s 20-year floating-to-fixed long-term renewable energy swap contracts. 2032 No Line Item Description End Date of Remaining Recovery/Refund Period Return Renewable portfolio standards costs Represents an overcollection of funds from both ComEd customers and alternative retail electricity suppliers to be spent on future renewable energy procurements. $1,296 million to be determined in pending ICC annual reconciliation for the Renewable Energy Adjustment rider. $73 million to be determined based on the LTRRPP developed by the IPA. No Transmission formula rate annual reconciliations Represents under (over)-recoveries related to transmission service costs recoverable through the Utility Registrants’ FERC formula rates, which are updated annually with rates effective each June 1 st . 2026 Yes Under (over) -recovered revenue decoupling Represents electric and / or gas distribution costs recoverable from or refundable to customers under decoupling mechanisms. BGE - 2026 Pepco (Maryland) - $8 million - 2025 Pepco (District of Columbia) - $52 million - 2028 DPL - 2025 ACE - 2026 BGE, Pepco, DPL, ACE - No Line Item Description End Date of Remaining Recovery/Refund Period Return Under-recovered credit loss expense For ComEd and ACE, amounts represent the difference between annual credit loss expense and revenues collected in rates through ICC and NJBPU-approved riders. The difference between net credit loss expense and revenues collected through the rider each calendar year for ComEd is recovered over a twelve-month period beginning in June of the following calendar year. ACE intends to recover from June through May of each respective year, subject to approval of the NJBPU. ComEd - 2025 ACE - To be determined in pending Societal Benefits Rider filing with NJBPU. No Universal service fund charge under-recovery - Electric Represents under-recovery of electric supply and distribution revenue shortfalls net of base rate recovery related to PECO’s Universal Service programs, which are designed to provide affordable bills for electric service to low-income, residential customers based on individual household needs. PECO - To be determined in the annual adjustment and reconciliation as approved by the PAPUC. No Zero emission credit Represents ZEC procurement costs and any reasonable costs ComEd has incurred to implement and comply with the ZEC procurement process. Over 9 months starting with the September billing period and ending with the following May billing period. No
Capitalized Ratemaking Amounts Not Recognized	The following table presents authorized amounts capitalized for ratemaking purposes related to earnings on shareholders’ investment that are not recognized for financial reporting purposes in the Registrants' Consolidated Balance Sheets. These amounts will be recognized as revenues in the related Consolidated Statements of Operations and Comprehensive Income in the periods they are billable to the Utility Registrants' customers. PECO had no related amounts at December 31, 2024 and December 31, 2023 Exelon ComEd (a) BGE (b) PHI Pepco (c) DPL (d) ACE (e) December 31, 2024 $ 117 $ 46 $ 16 $ 55 $ 40 $ 1 $ 14 December 31, 2023 $ 110 $ 32 $ 33 $ 45 $ 34 $ 1 $ 10 __________ (a) Reflects ComEd's unrecognized equity returns earned for ratemaking purposes on its electric distribution rates and formula rates regulatory assets. (b) BGE's amount capitalized for ratemaking purposes primarily relates to earnings on shareholders' investment on AMI programs and investments in rate base included in the multi-year plan reconciliations. (c) Pepco's authorized amounts capitalized for ratemaking purposes relate to earnings on shareholders' investment on AMI programs, Energy efficiency and demand response programs, COVID-19, investments in rate base and revenues included in the multi-year plan reconciliations, and a portion of Pepco District of Columbia's revenue decoupling. (d) DPL's authorized amounts capitalized for ratemaking purposes relate to earnings on shareholders' investment on AMI programs and Energy efficiency and demand response programs. (e)

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Tables)	12 Months Ended
	Dec. 31, 2024
Revenue from Contract with Customer [Abstract]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction	Revenue Source Description Performance Obligation Timing of Revenue Recognition Payment Terms Regulated Electric and Gas Tariff Sales Sales of electricity and electricity distribution services (the Utility Registrants) and natural gas and gas distribution services (PECO, BGE, and DPL) to residential, commercial, industrial, and governmental customers through regulated tariff rates approved by state regulatory commissions. Delivery of electricity and/or natural gas. Over time (each day) as the electricity and/or natural gas is delivered to customers. Tariff sales are generally considered daily contracts as customers can discontinue service at any time. (a) Within the month following delivery of the electricity or natural gas to the customer. Regulated Transmission Services The Utility Registrants provide open access to their transmission facilities to PJM, which directs and controls the operation of these transmission facilities and accordingly compensates the Utility Registrants pursuant to filed tariffs at cost-based rates approved by FERC. Various including (i) Network Integration Transmission Services ("NITS"), (ii) scheduling, system control and dispatch services, and (iii) access to the wholesale grid. Over time utilizing output methods to measure progress towards completion. (b) Paid weekly by PJM. __________ (a) Electric and natural gas utility customers have the choice to purchase electricity or natural gas from competitive electric generation and natural gas suppliers. While the Utility Registrants are required under state legislation to bill their customers for the supply and distribution of electricity and/or natural gas, they recognize revenue related only to the distribution services when customers purchase their electricity or natural gas from competitive suppliers. (b) Passage of time is used for NITS and access to the wholesale grid and MWhs of energy transported over the wholesale grid is used for scheduling, system control and dispatch services. The following table shows the amounts of future revenues expected to be recorded in each year for performance obligations that are unsatisfied or partially unsatisfied as of December 31, 2024. This disclosure only includes contracts for which the total consideration is fixed and determinable at contract inception. The average contract term varies by customer type and commodity but ranges from one month to several years. This disclosure excludes the Utility Registrants' gas and electric tariff sales contracts and transmission revenue contracts as they generally have an original expected duration of one year or less and, therefore, do not contain any future, unsatisfied performance obligations to be included in this disclosure. Year Exelon PHI Pepco DPL ACE 2025 $ 7 $ 7 $ 5 $ 1 $ 1 2026 6 6 5 1 — 2027 5 5 5 — — 2028 5 5 5 — — 2029 and thereafter 104 104 81 11 12 Total $ 127 $ 127 $ 101 $ 13 $ 13
Contract with Customer, Contract Asset, Contract Liability, and Receivable	The following table provides a rollforward of the contract liabilities reflected in Exelon's, PHI's, Pepco's, DPL's, and ACE'S Consolidated Balance Sheets. As of December 31, 2024, 2023, and 2022, ComEd's, PECO's, and BGE's contract liabilities were not material. Exelon (a) PHI (a) Pepco (a) DPL (a) ACE (a) Balance at December 31, 2022 $ 101 $ 101 $ 81 $ 10 $ 10 Consideration received 39 39 31 4 4 Revenues recognized (7) (7) (5) (1) (1) Balance at December 31, 2023 $ 133 $ 133 $ 107 $ 13 $ 13 Revenues recognized (6) (6) (6) — — Balance at December 31, 2024 $ 127 $ 127 $ 101 $ 13 $ 13 __________ (a)

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2024
Segment Reporting [Abstract]
Analysis and reconciliation of reportable segment information	An analysis and reconciliation of the Registrants' reportable segment information to the respective information in the consolidated financial statements for the years ended December 31, 2024, 2023, and 2022 is as follows: ComEd PECO BGE PHI Other (a) Intersegment Exelon Operating revenues (b) : 2024 Electric revenues $ 8,219 $ 3,325 $ 3,436 $ 6,258 $ — $ (22) $ 21,216 Natural gas revenues — 648 990 180 — (6) 1,812 Shared service and other revenues — — — 10 1,865 (1,875) — Total operating revenues $ 8,219 $ 3,973 $ 4,426 $ 6,448 $ 1,865 $ (1,903) $ 23,028 2023 Electric revenues $ 7,844 $ 3,202 $ 3,109 $ 5,812 $ — $ (51) $ 19,916 Natural gas revenues — 692 918 205 — (4) 1,811 Shared service and other revenues — — — 9 1,759 (1,768) — Total operating revenues $ 7,844 $ 3,894 $ 4,027 $ 6,026 $ 1,759 $ (1,823) $ 21,727 2022 Electric revenues $ 5,761 $ 3,165 $ 2,871 $ 5,317 $ — $ (31) $ 17,083 Natural gas revenues — 738 1,024 238 — (5) 1,995 Shared service and other revenues — — — 10 1,823 (1,833) — Total operating revenues $ 5,761 $ 3,903 $ 3,895 $ 5,565 $ 1,823 $ (1,869) $ 19,078 Less: Purchased power ComEd PECO BGE PHI Other (a) Intersegment Exelon 2024 $ 3,042 $ 1,265 $ 1,460 $ 2,447 $ — $ — $ 8,214 2023 2,816 1,270 1,311 2,250 — 1 7,648 2022 1,050 1,160 1,186 1,984 — — 5,380 Purchased fuel 2024 $ — $ 212 $ 191 $ 66 $ — $ — $ 469 2023 — 274 220 98 — 1 593 2022 — 342 363 129 — — 834 Purchased power and fuel from affiliates 2024 $ — $ — $ — $ — $ — $ — $ — 2023 — — — — — — — 2022 59 33 18 51 — (2) 159 Operating and maintenance 2024 $ 1,284 $ 875 $ 790 $ 1,046 $ 1,733 $ (788) $ 4,940 2023 1,096 786 520 1,110 1,861 (814) 4,559 2022 1,094 791 670 966 1,907 (755) 4,673 Operating and maintenance from affiliates 2024 $ 419 $ 245 $ 246 $ 204 $ 41 $ (1,155) $ — 2023 354 217 221 179 37 (1,008) — 2022 318 201 207 191 88 (1,005) — Depreciation and amortization 2024 $ 1,514 $ 428 $ 638 $ 947 $ 67 $ — $ 3,594 2023 1,403 397 654 990 62 — 3,506 2022 1,323 373 630 938 61 — 3,325 Taxes other than income taxes 2024 $ 376 $ 218 $ 345 $ 528 $ 37 $ — $ 1,504 2023 369 202 319 487 31 — 1,408 2022 374 202 302 475 37 — 1,390 (Gain) loss on sale of assets and businesses 2024 $ (5) $ (4) $ — $ 1 $ (4) $ — $ (12) 2023 — — — (9) (1) — (10) 2022 2 — — — — — 2 Interest expense, net (c) 2024 $ 487 $ 221 $ 216 $ 373 $ 592 $ — $ 1,889 2023 464 192 182 323 545 (2) 1,704 2022 401 165 152 292 415 (3) 1,422 Interest expense to affiliates, net (c) 2024 $ 14 $ 11 $ — $ 3 $ (3) $ — $ 25 2023 13 9 — — 1 2 25 2022 13 12 — — (2) 2 25 ComEd PECO BGE PHI Other (a) Intersegment Exelon Other, net 2024 $ (94) $ (37) $ (36) $ (97) $ (38) $ 40 $ (262) 2023 (75) (36) (18) (108) (190) 19 (408) 2022 (54) (31) (21) (78) (290) (61) (535) Income taxes 2024 $ 116 $ (12) $ 49 $ 189 $ (135) $ — $ 207 2023 314 20 133 116 (207) (2) 374 2022 264 79 8 9 — (11) 349 Net income (loss) from continuing operations 2024 $ 1,066 $ 551 $ 527 $ 741 $ (425) $ — $ 2,460 2023 1,090 563 485 590 (380) (20) 2,328 2022 917 576 380 608 (393) (34) 2,054 Supplemental segment information Intersegment revenues (d) 2024 $ 8 $ 10 $ 10 $ 10 $ 1,855 $ (1,893) $ — 2023 16 9 9 9 1,750 (1,793) — 2022 16 7 15 10 1,823 (1,865) 6 Capital expenditures 2024 $ 2,195 $ 1,553 $ 1,420 $ 1,863 $ 66 $ — $ 7,097 2023 2,576 1,426 1,367 1,988 54 — 7,411 2022 2,506 1,349 1,262 1,709 95 — 6,921 Total assets 2024 $ 44,750 $ 17,123 $ 15,542 $ 28,297 $ 6,012 $ (3,940) $ 107,784 2023 42,827 15,595 14,331 27,066 6,374 (4,337) 101,856 __________ (a) Other primarily includes Exelon’s corporate operations, shared service entities, and other financing and investment activities. (b) Includes gross utility tax receipts from customers. The offsetting remittance of utility taxes to the governing bodies is recorded in Taxes other than income taxes in the Registrants’ Consolidated Statements of Operations and Comprehensive Income. See Note 22 — Supplemental Financial Information for additional information on total utility taxes. (c) Interest expense, net and Interest expense to affiliates, net are primarily inclusive of Interest expense, which is partially offset by an immaterial amount of interest income. (d) See Note 23 — Related Party Transactions for additional information on intersegment revenues. PHI: Pepco DPL ACE Other (a) Intersegment PHI Operating revenues (b) : 2024 Electric revenues $ 3,039 $ 1,607 $ 1,628 $ — $ (16) $ 6,258 Natural gas revenues — 180 — — — 180 Shared service and other revenues — — — 438 (428) 10 Total operating revenues $ 3,039 $ 1,787 $ 1,628 $ 438 $ (444) $ 6,448 2023 Electric revenues $ 2,824 $ 1,483 $ 1,522 $ 1 $ (18) $ 5,812 Natural gas revenues — 205 — — — 205 Shared service and other revenues — — — 422 (413) 9 Total operating revenues $ 2,824 $ 1,688 $ 1,522 $ 423 $ (431) $ 6,026 2022 Electric revenues $ 2,531 $ 1,357 $ 1,431 $ — $ (2) $ 5,317 Natural gas revenues — 238 — — — 238 Shared service and other revenues — — — 391 (381) 10 Total operating revenues $ 2,531 $ 1,595 $ 1,431 $ 391 $ (383) $ 5,565 Less: Purchased power 2024 $ 1,055 $ 694 $ 698 $ — $ — $ 2,447 2023 974 639 637 — — 2,250 2022 795 567 622 — — 1,984 Purchased fuel 2024 $ — $ 66 $ — $ — $ — $ 66 2023 — 98 — — — 98 2022 — 129 — — — 129 Purchased power and fuel from affiliates 2024 $ — $ — $ — $ — $ — $ — 2023 — — — — — — 2022 39 10 2 — — 51 Operating and maintenance 2024 $ 283 $ 196 $ 206 $ 361 $ — $ 1,046 2023 336 193 233 348 — 1,110 2022 284 183 189 310 — 966 Operating and maintenance from affiliates 2024 $ 251 $ 181 $ 162 $ 54 $ (444) $ 204 2023 236 171 153 50 (431) 179 2022 223 166 142 43 (383) 191 Depreciation and amortization 2024 $ 407 $ 245 $ 278 $ 17 $ — $ 947 2023 441 244 283 22 — 990 Pepco DPL ACE Other (a) Intersegment PHI 2022 417 232 261 28 — 938 Taxes other than income taxes 2024 $ 424 $ 79 $ 9 $ 16 $ — $ 528 2023 390 75 8 14 — 487 2022 382 72 9 12 — 475 Loss (gain) on sale of assets and businesses 2024 $ 1 $ — $ — $ — $ — $ 1 2023 (9) — — — — (9) 2022 — — — — — — Interest expense, net (c) 2024 $ 195 $ 94 $ 74 $ 10 $ — $ 373 2023 165 74 72 12 — 323 2022 150 66 66 9 1 292 Interest expense to affiliates, net (c) 2024 $ (3) $ (1) $ 5 $ 2 $ — $ 3 2023 — — — — — — 2022 — — — — — — Other, net 2024 $ (54) $ (25) $ (14) $ (4) $ — $ (97) 2023 (66) (18) (20) (4) — (108) 2022 (55) (13) (11) 2 (1) (78) Income taxes 2024 $ 90 $ 49 $ 55 $ (5) $ — $ 189 2023 51 35 36 (6) — 116 2022 (9) 14 3 1 — 9 Net income (loss) from continuing operations 2024 $ 390 $ 209 $ 155 $ (13) $ — $ 741 2023 306 177 120 (13) — 590 2022 305 169 148 (14) — 608 Supplemental segment information Intersegment revenues (d) 2024 $ 7 $ 7 $ 2 $ 438 $ (444) $ 10 2023 9 8 2 422 (432) 9 2022 5 6 2 380 (383) 10 Capital expenditures 2024 $ 929 $ 556 $ 373 $ 5 $ — $ 1,863 2023 957 562 460 9 — 1,988 2022 874 430 398 7 — 1,709 Total assets 2024 $ 12,000 $ 6,421 $ 5,349 $ 4,567 $ (40) $ 28,297 2023 11,330 5,993 5,157 4,627 (41) 27,066 __________ (a) Other primarily includes PHI’s corporate operations, shared service entities, and other financing and investment activities. (b) Includes gross utility tax receipts from customers. The offsetting remittance of utility taxes to the governing bodies is recorded in Taxes other than income taxes in the Registrants’ Consolidated Statements of Operations and Comprehensive Income. See Note 22 — Supplemental Financial Information for additional information on total utility taxes. (c) Interest expense, net is primarily inclusive of Interest expense, which is partially offset by an immaterial amount of Interest income. (d) Includes intersegment revenues with ComEd, PECO, and BGE, which are eliminated at Exelon.
Schedule of Revenue by Major Customers by Reporting Segments	The following tables disaggregate the Registrants' revenues recognized from contracts with customers into categories that depict how the nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factors. For the Utility Registrants, the disaggregation of revenues reflects the two primary utility services of electric sales and natural gas sales (where applicable), with further disaggregation of these tariff sales provided by major customer groups. Exelon's disaggregated revenues are consistent with the Utility Registrants, but exclude any intercompany revenues. 2024 Revenues from contracts with customers ComEd PECO BGE PHI Pepco DPL ACE Electric revenues Residential $ 3,809 $ 2,169 $ 2,038 $ 3,256 $ 1,413 $ 943 $ 900 Small commercial & industrial 2,259 547 360 681 184 253 244 Large commercial & industrial 1,145 261 557 1,372 1,053 123 196 Public authorities & electric railroads 60 29 31 74 37 17 20 Other (a) 1,080 296 414 871 327 270 280 Total electric revenues (b) $ 8,353 $ 3,302 $ 3,400 $ 6,254 $ 3,014 $ 1,606 $ 1,640 Natural gas revenues Residential $ — $ 445 $ 625 $ 108 $ — $ 108 $ — Small commercial & industrial — 157 110 43 — 43 — Large commercial & industrial — — 204 5 — 5 — Transportation — 28 — 17 — 17 — Other (c) — 16 18 7 — 7 — Total natural gas revenues (d) $ — $ 646 $ 957 $ 180 $ — $ 180 $ — Total revenues from contracts with customers $ 8,353 $ 3,948 $ 4,357 $ 6,434 $ 3,014 $ 1,786 $ 1,640 Other revenues Revenues from alternative revenue programs $ (151) $ 6 $ 52 $ 1 $ 15 $ (2) $ (12) Other electric revenues (e) 17 17 14 13 10 3 — Other natural gas revenues (e) — 2 3 — — — — Total other revenues $ (134) $ 25 $ 69 $ 14 $ 25 $ 1 $ (12) Total revenues for reportable segments $ 8,219 $ 3,973 $ 4,426 $ 6,448 $ 3,039 $ 1,787 $ 1,628 2023 Revenues from contracts with customers ComEd PECO BGE PHI Pepco DPL ACE Electric revenues Residential $ 3,565 $ 2,090 $ 1,765 $ 2,845 $ 1,236 $ 827 $ 782 Small commercial & industrial 1,857 526 331 651 176 246 229 Large commercial & industrial 824 249 528 1,420 1,087 126 207 Public authorities & electric railroads 51 30 29 67 34 16 17 Other (a) 965 298 402 760 258 250 260 Total electric revenues (b) $ 7,262 $ 3,193 $ 3,055 $ 5,743 $ 2,791 $ 1,465 $ 1,495 Natural gas revenues Residential $ — $ 473 $ 568 $ 122 $ — $ 122 $ — Small commercial & industrial — 172 100 53 — 53 — Large commercial & industrial — 1 161 4 — 4 — Transportation — 27 — 16 — 16 — Other (c) — 17 37 10 — 10 — Total natural gas revenues (d) $ — $ 690 $ 866 $ 205 $ — $ 205 $ — Total revenues from contracts with customers $ 7,262 $ 3,883 $ 3,921 $ 5,948 $ 2,791 $ 1,670 $ 1,495 Other revenues Revenues from alternative revenue programs $ 556 $ (7) $ 84 $ 64 $ 22 $ 15 $ 27 Other electric revenues (e) 26 16 16 14 11 3 — Other natural gas revenues (e) — 2 6 — — — — Total other revenues $ 582 $ 11 $ 106 $ 78 $ 33 $ 18 $ 27 Total revenues for reportable segments $ 7,844 $ 3,894 $ 4,027 $ 6,026 $ 2,824 $ 1,688 $ 1,522 2022 Revenues from contracts with customers ComEd PECO BGE PHI Pepco DPL ACE Electric revenues Residential $ 3,304 $ 2,026 $ 1,564 $ 2,590 $ 1,076 $ 750 $ 764 Small commercial & industrial 1,173 521 327 607 155 235 217 Large commercial & industrial 5 299 567 1,422 1,083 137 202 Public authorities & electric railroads 29 30 27 64 34 15 15 Other (a) 955 271 398 695 208 227 252 Total electric revenues (b) $ 5,466 $ 3,147 $ 2,883 $ 5,378 $ 2,556 $ 1,364 $ 1,450 Natural gas revenues Residential $ — $ 512 $ 678 $ 127 $ — $ 127 $ — Small commercial & industrial — 186 111 55 — 55 — Large commercial & industrial — — 183 12 — 12 — Transportation — 26 — 15 — 15 — Other (c) — 12 68 29 — 29 — Total natural gas revenues (d) $ — $ 736 $ 1,040 $ 238 $ — $ 238 $ — Total revenues from contracts with customers $ 5,466 $ 3,883 $ 3,923 $ 5,616 $ 2,556 $ 1,602 $ 1,450 Other revenues Revenues from alternative revenue programs $ 267 $ 2 $ (47) $ (59) $ (31) $ (9) $ (19) Other electric revenues (e) 28 16 14 8 6 2 — Other natural gas revenues (e) — 2 5 — — — — Total other revenues $ 295 $ 20 $ (28) $ (51) $ (25) $ (7) $ (19) Total revenues for reportable segments $ 5,761 $ 3,903 $ 3,895 $ 5,565 $ 2,531 $ 1,595 $ 1,431 __________ (a) Includes transmission revenue from PJM, wholesale electric revenue and mutual assistance revenue. (b) Includes operating revenues from affiliates in 2024, 2023, and 2022 respectively of: • $8 million, $16 million, and $16 million at ComEd • $7 million, $7 million, and $7 million at PECO • $7 million, $6 million, and $7 million at BGE • $10 million, $9 million, and $10 million at PHI • $7 million, $9 million, and $5 million at Pepco • $7 million, $8 million, and $6 million at DPL • $2 million, $2 million, and $2 million at ACE (c) Includes revenues from off-system natural gas sales. (d) Includes operating revenues from affiliates in 2024, 2023, and 2022 respectively of: • $3 million, $2 million, and less than $1 million at PECO • $3 million, $3 million, and $8 million at BGE (e) Includes late payment charge revenues.

Accounts Receivable (Tables)

Accounts Receivable (Tables)	12 Months Ended
	Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
Allowance for credit loss rollforward	The following tables present the rollforward of Allowance for Credit Losses on Customer Accounts Receivable. Year Ended December 31, 2024 Exelon ComEd PECO BGE PHI Pepco DPL ACE Balance at December 31, 2023 $ 317 $ 69 $ 95 $ 46 $ 107 $ 52 $ 19 $ 36 Plus: Current period provision for expected credit losses (a)(b) 248 78 72 37 61 39 10 12 Less: Write-offs (c)(d)(e) , net of recoveries (f) 159 38 34 27 60 32 12 16 Balance at December 31, 2024 $ 406 $ 109 $ 133 $ 56 $ 108 $ 59 $ 17 $ 32 Year Ended December 31, 2023 Exelon ComEd PECO BGE PHI Pepco DPL ACE Balance at December 31, 2022 $ 327 $ 59 $ 105 $ 54 $ 109 $ 47 $ 21 $ 41 Plus: Current period provision for expected credit losses 170 53 48 26 43 23 9 11 Less: Write-offs, net of recoveries 180 43 58 34 45 18 11 16 Balance at December 31, 2023 $ 317 $ 69 $ 95 $ 46 $ 107 $ 52 $ 19 $ 36 __________ (a) For PECO and ComEd, the increase is primarily a result of increased aging of receivables. (b) For BGE and Pepco, the increase is primarily a result of changes in customer risk profile and increased receivable balances. (c) For PECO, the decrease is primarily a result of decreased disconnection activities. (d) For BGE, the decrease is primarily a result of increased collection activities. (e) For Pepco, the increase is primarily attributable to unfavorable customer payment behavior. (f) Recoveries were not material to the Registrants. The following tables present the rollforward of Allowance for Credit Losses on Other Accounts Receivable. Year Ended December 31, 2024 Exelon ComEd PECO BGE PHI Pepco DPL ACE Balance at December 31, 2023 $ 82 $ 17 $ 8 $ 7 $ 50 $ 28 $ 8 $ 14 Plus: Current period provision (benefit) for expected credit losses (a)(b) 45 21 15 6 3 (1) 1 3 Less: Write-offs, net of recoveries (c) 20 4 5 7 4 — — 4 Balance at December 31, 2024 $ 107 $ 34 $ 18 $ 6 $ 49 $ 27 $ 9 $ 13 Year Ended December 31, 2023 Exelon ComEd PECO BGE PHI Pepco DPL ACE Balance at December 31, 2022 $ 82 $ 17 $ 9 $ 10 $ 46 $ 25 $ 7 $ 14 Plus: Current period provision for expected credit losses 21 5 4 5 7 3 1 3 Less: Write-offs, net of recoveries 21 5 5 8 3 — — 3 Balance at December 31, 2023 $ 82 $ 17 $ 8 $ 7 $ 50 $ 28 $ 8 $ 14 __________ (a) For PECO and ComEd, the increase is primarily a result of increased aging of receivables. (b) For Pepco, the decrease is primarily a result of decreased aging of receivables. (c) Recoveries were not material to the Registrants.
Unbilled customer revenue	The following table provides additional information about unbilled customer revenues recorded in the Registrants' Consolidated Balance Sheets as of December 31, 2024 and 2023. Unbilled customer revenues (a) Exelon ComEd PECO BGE PHI Pepco DPL ACE December 31, 2024 $ 1,114 $ 335 $ 254 $ 257 $ 268 $ 121 $ 76 $ 71 December 31, 2023 991 351 185 208 247 109 64 74 __________ (a) Unbilled customer revenues are classified in Customer accounts receivables, net in the Registrants' Consolidated Balance Sheets.
Purchases of accounts receivable	The following table presents the total receivables purchased. Total receivables purchased Exelon ComEd PECO BGE PHI Pepco DPL ACE Year ended December 31, 2024 $ 4,128 $ 964 $ 1,111 $ 778 $ 1,275 $ 799 $ 252 $ 224 Year ended December 31, 2023 4,056 942 1,099 804 1,211 782 228 201

Property, Plant and Equipment_2

Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2024
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	The following tables present a summary of property, plant, and equipment by asset category at December 31, 2024 and 2023: Asset Category Exelon ComEd PECO BGE PHI Pepco DPL ACE December 31, 2024 Electric—transmission and distribution $ 79,283 $ 36,493 $ 12,234 $ 11,131 $ 21,130 $ 13,593 $ 6,086 $ 5,947 Gas—transportation and distribution 9,599 — 4,247 4,796 821 — 976 — Common—electric and gas 2,630 — 1,064 1,385 272 — 241 — Construction work in progress 4,306 1,219 813 779 1,472 1,002 275 187 Other property, plant, and equipment (a) 809 118 76 48 86 24 37 30 Total property, plant, and equipment 96,627 37,830 18,434 18,139 23,781 14,619 7,615 6,164 Less: accumulated depreciation 18,445 7,619 4,042 5,005 3,728 4,522 2,075 1,798 Property, plant, and equipment, net $ 78,182 $ 30,211 $ 14,392 $ 13,134 $ 20,053 $ 10,097 $ 5,540 $ 4,366 December 31, 2023 Electric—transmission and distribution $ 74,102 $ 34,834 $ 11,295 $ 10,537 $ 19,153 $ 12,429 $ 5,590 $ 5,659 Gas—transportation and distribution 8,818 — 3,905 4,428 748 — 905 — Common—electric and gas 2,510 — 1,083 1,275 243 — 211 — Construction work in progress 4,589 1,369 879 561 1,762 1,226 345 189 Other property, plant and equipment (a) 825 107 63 45 120 59 39 28 Total property, plant and equipment 90,844 36,310 17,225 16,846 22,026 13,714 7,090 5,876 Less: accumulated depreciation 17,251 7,222 4,097 4,744 3,175 4,284 1,925 1,684 Property, plant, and equipment, net $ 73,593 $ 29,088 $ 13,128 $ 12,102 $ 18,851 $ 9,430 $ 5,165 $ 4,192 __________ (a) Primarily composed of land and non-utility property. The following table presents the average service life for each asset category in number of years: Average Service Life (years) Asset Category Exelon ComEd PECO BGE PHI Pepco DPL ACE Electric - transmission and distribution 5-80 5-80 5-70 5-80 5-75 5-75 5-75 5-75 Gas - transportation and distribution 5-80 N/A 5-70 5-80 5-75 N/A 5-75 N/A Common - electric and gas 4-75 N/A 5-55 4-50 5-75 N/A 5-75 N/A Other property, plant, and equipment 4-61 29-50 50 20-50 10-43 10-33 10-43 10-43
Property Plant And Equipment Average Service Life Percentage By Asset Category Table	The following table presents the annual depreciation rates for each asset category. Annual Depreciation Rates Exelon ComEd PECO BGE PHI Pepco DPL ACE December 31, 2024 Electric—transmission and distribution 2.83% 3.06% 2.30% 2.55% 2.87% 2.49% 2.99% 3.41% Gas—transportation and distribution 2.12% N/A 1.96% 2.42% 1.38% N/A 1.38% N/A Common—electric and gas 7.00% N/A 6.73% 7.81% 4.82% N/A 6.14% N/A December 31, 2023 Electric—transmission and distribution 2.90% 3.02% 2.30% 2.89% 3.03% 2.51% 3.29% 3.66% Gas—transportation and distribution 2.15% N/A 1.85% 2.56% 1.44% N/A 1.44% N/A Common—electric and gas 7.77% N/A 6.87% 8.68% 7.18% N/A 8.79% N/A December 31, 2022 Electric—transmission and distribution 2.87% 3.00% 2.29% 2.82% 2.96% 2.58% 3.08% 3.38% Gas—transportation and distribution 2.14% N/A 1.87% 2.53% 1.45% N/A 1.45% N/A Common—electric and gas 7.54% N/A 6.31% 8.20% 8.96% N/A 10.03% N/A
Schedule Of Capitalized Interest And AFUDC	The following table summarizes credits to AFUDC by year: For the Years Ended December 31, 2024 2023 2022 Exelon $ 251 $ 256 $ 215 ComEd 75 72 54 PECO 48 46 42 BGE 39 25 29 PHI 89 113 90 Pepco 62 85 69 DPL 19 16 10 ACE 8 12 11

Jointly Owned Electric Utilit_2

Jointly Owned Electric Utility Plant (Tables)	12 Months Ended
	Dec. 31, 2024
Public Utilities, Property, Plant and Equipment [Abstract]
Schedule of Jointly Owned Utility Plants	PECO's, DPL's, and ACE's material undivided ownership interests in transmission facilities jointly owned with non-affiliated utilities as of December 31, 2024 and 2023 were as follows: Transmission NJ/DE (a) Operator PSEG/DPL Ownership interest various Exelon’s share at December 31, 2024: Plant in service $ 105 Accumulated depreciation 57 Construction work in progress 4 Exelon’s share at December 31, 2023: Plant in service $ 103 Accumulated depreciation 56 Construction work in progress 2 __________ (a) PECO, DPL, and ACE own a 42.55%, 1%, and 13.9% share, respectively, in 151.3 miles of 500kV lines located in New Jersey and in the Salem substation. PECO, DPL, and ACE also own a 42.55%, 7.45%, and 7.45% share, respectively, in 2.5 miles of 500kV line located over the Delaware River. ACE also has a 21.78% share in a 500kV New Freedom Switching substation. Certain facilities are fully owned by Exelon through its 100% ownership in PECO, DPL, and ACE. These facilities are operated by Exelon Registrants. PECO's, DPL's, and ACE's material undivided ownership interests in Exelon owned facilities as of December 31, 2024 and 2023 were as follows: PECO PHI DPL ACE Ownership interest 56 % 44 % 27 % 17 % Registrant's share at December 31, 2024: Plant in service $ 84 $ 72 $ 44 $ 28 Accumulated depreciation 2 3 3 — Construction work in progress — — — — Registrant's share at December 31, 2023: Plant in service $ 7 $ 6 $ 4 $ 2 Accumulated depreciation — — — — Construction work in progress 70 58 36 22

Asset Retirement Obligations (T

Asset Retirement Obligations (Tables)	12 Months Ended
	Dec. 31, 2024
Asset Retirement Obligation Disclosure [Abstract]
Asset Retirement Obligation Rollforward	The following table provides a rollforward of the AROs reflected in the Registrants’ Consolidated Balance Sheets from December 31, 2022 to December 31, 2024: Exelon ComEd PECO BGE PHI Pepco DPL ACE AROs at December 31, 2022 $ 271 $ 150 $ 28 $ 30 $ 59 $ 39 $ 13 $ 7 Revisions in estimates of cash flows (9) (3) (1) 1 (6) (4) (1) (1) Accretion expense (a) 11 6 1 1 3 2 1 — Payments (4) (3) (1) — — — — — AROs at December 31, 2023 $ 269 $ 150 $ 27 $ 32 $ 56 $ 37 $ 13 $ 6 Revisions in estimates of cash flows 26 12 1 3 10 10 — — Accretion expense (a) 11 7 1 1 2 2 — — Payments (2) (1) (1) — — — — — AROs at December 31, 2024 $ 304 $ 168 $ 28 $ 36 $ 68 $ 49 $ 13 $ 6 __________ (a) For ComEd, PECO, BGE, DPL and ACE, the majority of the accretion is recorded as an increase to a regulatory asset due to the associated regulatory treatment.

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2024
Leases [Abstract]
Operating Leases Of Lessee Disclosure	The following tables outline the significant types of leases at each of the Registrants and other terms and conditions of the lease agreements as of December 31, 2024. Exelon, ComEd, PECO, and BGE did not have material finance leases in 2024, 2023, or 2022. Exelon ComEd PECO BGE PHI Pepco DPL ACE Real estate ● ● ● ● ● ● ● ● Vehicles and equipment ● ● ● ● ● ● (in years) Exelon ComEd PECO BGE PHI Pepco DPL ACE Remaining lease terms 1-81 1-28 1-9 1-81 1-7 1-7 1-7 1-7 Options to extend the term 3-30 N/A N/A 3-5 3-30 5 3-30 5 Options to terminate within 3-8 N/A N/A 3 N/A N/A N/A N/A
Components of Lease Cost	The components of operating lease costs were as follows: Exelon ComEd PECO BGE PHI Pepco DPL ACE For the year ended December 31, 2024 Operating lease costs $ 57 $ — $ — $ 8 $ 41 $ 10 $ 10 $ 5 Variable lease costs 9 — — — 3 1 1 1 Total lease costs (a) $ 66 $ — $ — $ 8 $ 44 $ 11 $ 11 $ 6 For the year ended December 31, 2023 Operating lease costs $ 58 $ 1 $ — $ 5 $ 43 $ 11 $ 11 $ 6 Variable lease costs 9 1 — — 3 1 1 1 Total lease costs (a) $ 67 $ 2 $ — $ 5 $ 46 $ 12 $ 12 $ 7 For the year ended December 31, 2022 Operating lease costs $ 66 $ 2 $ — $ 15 $ 42 $ 10 $ 12 $ 6 Variable lease costs 8 1 — — 2 1 1 1 Total lease costs (a) $ 74 $ 3 $ — $ 15 $ 44 $ 11 $ 13 $ 7 __________ (a) Excludes sublease income recorded at Exelon, PHI, and DPL of $4 million for the years ended December 31, 2024, 2023, and 2022. The components of financing lease costs were as follows: PHI Pepco DPL ACE For the year ended December 31, 2024 Amortization of ROU asset $ 18 $ 7 $ 7 $ 4 Interest on lease liabilities 6 2 2 2 Total finance lease cost $ 24 $ 9 $ 9 $ 6 For the year ended December 31, 2023 Amortization of ROU asset $ 16 $ 6 $ 6 $ 4 Interest on lease liabilities 6 2 2 1 Total finance lease cost $ 22 $ 8 $ 8 $ 5 For the year ended December 31, 2022 Amortization of ROU asset $ 14 $ 5 $ 6 $ 3 Interest on lease liabilities 4 1 2 1 Total finance lease cost $ 18 $ 6 $ 8 $ 4 ROU assets obtained in exchange for operating and finance lease obligations were as follows: Operating Leases Exelon ComEd PECO BGE PHI Pepco DPL ACE For the year ended December 31, 2024 $ 8 $ — $ — $ 1 $ 5 $ 1 $ 2 $ 2 For the year ended December 31, 2023 35 — — 32 3 — 1 2 For the year ended December 31, 2022 46 — — — 2 — 1 1 Finance Leases PHI Pepco DPL ACE For the year ended December 31, 2024 $ 15 $ 7 $ 4 $ 4 For the year ended December 31, 2023 11 5 3 3 For the year ended December 31, 2022 14 4 7 3
Supplemental Balance Sheet Information Related to Lessee Right-of-Use Assets and Lease Liabilities	The following tables provide additional information regarding the presentation of operating and finance lease ROU assets and lease liabilities within the Registrants’ Consolidated Balance Sheets: Operating Leases Exelon ComEd PECO BGE PHI Pepco DPL ACE At December 31, 2024 Operating lease ROU assets Other deferred debits and other assets $ 224 $ — $ — $ 24 $ 127 $ 26 $ 27 $ 7 Operating lease liabilities Other current liabilities $ 38 $ — $ — $ 3 $ 30 $ 5 $ 6 $ 3 Other deferred credits and other liabilities 217 — — 16 116 25 32 5 Total operating lease liabilities $ 255 $ — $ — $ 19 $ 146 $ 30 $ 38 $ 8 At December 31, 2023 Operating lease ROU assets Other deferred debits and other assets $ 257 $ — $ 1 $ 29 $ 152 $ 31 $ 32 $ 8 Operating lease liabilities Other current liabilities $ 38 $ — $ — $ 4 $ 30 $ 5 $ 7 $ 3 Other deferred credits and other liabilities 248 — — 17 141 30 36 6 Total operating lease liabilities $ 286 $ — $ — $ 21 $ 171 $ 35 $ 43 $ 9 Finance Leases PHI Pepco DPL ACE At December 31, 2024 Finance lease ROU assets Plant, property and equipment, net $ 72 $ 26 $ 26 $ 20 Finance lease liabilities Long-term debt due within one year $ 17 $ 6 $ 7 $ 4 Long-term debt 58 21 21 16 Total finance lease liabilities $ 75 $ 27 $ 28 $ 20 At December 31, 2023 Finance lease ROU assets Plant, property and equipment, net $ 72 $ 25 $ 28 $ 18 Finance lease liabilities Long-term debt due within one year $ 15 $ 5 $ 6 $ 4 Long-term debt 59 21 23 15 Total finance lease liabilities $ 74 $ 26 $ 29 $ 19
Lessee, Operating Lease, Liability, Maturity	Future minimum lease payments for operating and finance leases as of December 31, 2024 were as follows: Operating Leases Year Exelon ComEd PECO BGE PHI Pepco DPL ACE 2025 $ 49 $ — $ — $ 4 $ 36 $ 6 $ 8 $ 3 2026 44 — — 3 30 5 6 2 2027 42 — — 3 30 4 6 2 2028 42 — — 3 31 4 6 1 2029 25 — — 3 12 4 6 1 Remaining years 112 — — 21 29 12 16 — Total 314 — — 37 168 35 48 9 Interest 59 — — 18 22 5 10 1 Total operating lease liabilities $ 255 $ — $ — $ 19 $ 146 $ 30 $ 38 $ 8
Finance Lease, Liability, Fiscal Year Maturity	Finance Leases Year PHI Pepco DPL ACE 2025 $ 19 $ 7 $ 7 $ 5 2026 19 7 7 5 2027 17 6 7 4 2028 12 5 5 3 2029 9 3 3 2 Remaining years 6 2 2 2 Total 82 30 31 21 Interest 7 3 3 1 Total finance lease liabilities $ 75 $ 27 $ 28 $ 20
Schedule of Weighted Average Remaining Lease Terms For Operating Leases	The weighted average remaining lease terms, in years, for operating and finance leases were as follows: Operating Leases Exelon ComEd PECO BGE PHI Pepco DPL ACE At December 31, 2024 8.2 1.7 5.3 17.4 5.3 7.1 6.9 3.1 At December 31, 2023 8.8 1.8 5.0 17.1 6.1 7.6 7.4 3.2 Finance Leases PHI Pepco DPL ACE At December 31, 2024 4.4 4.4 4.2 4.5 At December 31, 2023 4.9 4.9 4.8 5.1
Schedule Of Weighted Average Remaining Discount Rate For Operating Leases	The weighted average discount rates for operating and finance leases were as follows: Operating Leases Exelon ComEd PECO BGE PHI Pepco DPL ACE At December 31, 2024 4.0 % 0.8 % 2.8 % 5.0 % 4.2 % 4.1 % 4.1 % 3.9 % At December 31, 2023 4.0 % 0.7 % 2.5 % 5.0 % 4.2 % 4.1 % 4.0 % 3.6 % Finance Leases PHI Pepco DPL ACE At December 31, 2024 3.4 % 3.5 % 3.1 % 3.5 % At December 31, 2023 2.7 % 2.7 % 2.6 % 2.8 %
Schedule of Supplemental Cash Flow Information Related to Leases	Cash paid for amounts included in the measurement of operating and finance lease liabilities were as follows: Operating Cash Flows from Operating Leases Exelon ComEd PECO BGE PHI Pepco DPL ACE For the year ended December 31, 2024 $ 48 $ — $ — $ 4 $ 35 $ 7 $ 7 $ 3 For the year ended December 31, 2023 65 2 — 15 37 7 9 3 For the year ended December 31, 2022 66 3 — 16 37 8 9 4 Financing Cash Flows from Finance Leases PHI Pepco DPL ACE For the year ended December 31, 2024 $ 17 $ 6 $ 7 $ 4 For the year ended December 31, 2023 15 5 6 4 For the year ended December 31, 2022 13 5 5 3
Operating Leases Of Lessor Disclosure	The following tables outline the significant types of leases at each of the Registrants and other terms and conditions of their lease agreements as of December 31, 2024. ACE did not have any operating leases for which they are the lessors for the years ended December 31, 2024, 2023, and 2022. Exelon ComEd PECO BGE PHI Pepco DPL Real estate ● ● ● ● ● ● ● (in years) Exelon ComEd PECO BGE PHI Pepco DPL Remaining lease terms 1-78 1-12 1-78 18 1-8 1 7-8 Options to extend the term 5-79 5-79 5-50 N/A N/A N/A N/A
Components of Operating Lease Income	The components of lease income were as follows: Exelon ComEd PECO BGE PHI Pepco DPL For the year ended December 31, 2024 Operating lease income $ 4 $ — $ — $ — $ 4 $ — $ 3 Variable lease income 1 — — — 1 — 1 For the year ended December 31, 2023 Operating lease income $ 5 $ — $ — $ — $ 4 $ — $ 3 Variable lease income 1 — — — 1 — 1 For the year ended December 31, 2022 Operating lease income $ 4 $ — $ — $ — $ 4 $ — $ 3 Variable lease income 1 — — — 1 — 1
Lessor, Operating Lease, Payment to be Received, Fiscal Year Maturity	Future minimum lease payments to be recovered under operating leases as of December 31, 2024 were as follows: Year Exelon ComEd PECO BGE PHI Pepco DPL 2025 $ 6 $ 1 $ 1 $ — $ 4 $ — $ 4 2026 6 — 1 — 5 — 4 2027 6 — — — 5 — 4 2028 5 — — — 5 — 5 2029 4 — — — 4 — 4 Remaining years 17 — 3 1 13 — 13 Total $ 44 $ 1 $ 5 $ 1 $ 36 $ — $ 34

Intangible Assets (Tables)

Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	The following table presents the gross amount, accumulated impairment loss, and carrying amount of Goodwill at Exelon, ComEd, and PHI at December 31, 2024 and 2023. There were no additions or impairments during the years ended December 31, 2024, 2023, and 2022. Gross Amount Accumulated Impairment Loss Carrying Amount Exelon $ 8,613 $ 1,983 $ 6,630 ComEd (a) 4,608 1,983 2,625 PHI (b) 4,005 — 4,005 __________ (a) Reflects goodwill recorded in 2000 from the PECO/Unicom merger (predecessor parent company of ComEd). (b) Reflects goodwill recorded in 2016 from the PHI merger.
Schedule of Finite-Lived Intangible Assets	Exelon’s other intangible assets, included in Other current assets and Other deferred debits and other assets in the Consolidated Balance Sheets, consisted of the following at December 31, 2024 and 2023. Exelon's and PHI's other intangible liabilities, included in current and noncurrent Unamortized energy contract liabilities in their Consolidated Balance Sheets, consisted of the following at December 31, 2024 and 2023. The intangible assets and liabilities shown below are amortized on a straight-line basis, except for unamortized energy contracts which are amortized in relation to the expected realization of the underlying cash flows: December 31, 2024 December 31, 2023 Gross Accumulated Amortization Net Gross Accumulated Amortization Net Exelon Unamortized Energy Contracts $ (1,515) $ 1,489 $ (26) $ (1,515) $ 1,480 $ (35) Software License 81 (78) 3 81 (70) 11 Exelon Total $ (1,434) $ 1,411 $ (23) $ (1,434) $ 1,410 $ (24) PHI Unamortized Energy Contracts $ (1,515) $ 1,489 $ (26) $ (1,515) $ 1,480 $ (35)
Schedule of Finite-Lived Intangible Assets Amortization Expense	The following table summarizes the amortization expense related to intangible assets and liabilities for each of the years ended December 31, 2024, 2023, and 2022: For the Years Ended December 31, Exelon (a) PHI (a) 2024 $ (1) $ (9) 2023 (1) (10) 2022 (b) (182) (190) __________ (a) For PHI unamortized energy contracts, the amortization of the fair value adjustment amounts and the corresponding offsetting regulatory asset amounts are amortized through Purchased power and fuel expense in their Consolidated Statements of Operations and Comprehensive Income resulting in no effect to net income. (b) On March 23, 2022, the NJBPU approved a petition by ACE to terminate the provisions in its PPAs. As such, the contract was fully amortized during the year ended December 31, 2022. See Note 3 - Regulatory Matters for additional information.

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2024
Income Tax Disclosure [Abstract]
Schedule of Components of Income Tax Expense (Benefit)	Income tax expense (benefit) from continuing operations is comprised of the following components: For the Year Ended December 31, 2024 Exelon ComEd PECO BGE PHI Pepco DPL ACE Included in operations: Federal Current $ 42 $ 76 $ 51 $ 45 $ 97 $ 50 $ 29 $ 16 Deferred (27) (76) (46) (42) 21 3 3 20 Investment tax credit amortization (2) (1) — — (1) — — — State Current 37 60 — — 19 17 4 — Deferred 157 57 (17) 46 53 20 13 19 Total $ 207 $ 116 $ (12) $ 49 $ 189 $ 90 $ 49 $ 55 For the Year Ended December 31, 2023 Exelon ComEd PECO BGE PHI Pepco DPL ACE Included in operations: Federal Current $ 51 $ 130 $ 63 $ 67 $ 71 $ 54 $ 25 $ 9 Deferred 193 45 (36) 16 (8) (28) (6) 13 Investment tax credit amortization (2) (1) — — (1) — — — State Current 4 (13) — — 15 12 6 — Deferred 128 153 (7) 50 39 13 10 14 Total $ 374 $ 314 $ 20 $ 133 $ 116 $ 51 $ 35 $ 36 For the Year Ended December 31, 2022 Exelon ComEd PECO BGE PHI Pepco DPL ACE Included in operations: Federal Current $ (24) $ 29 $ 13 $ (1) $ 16 $ 9 $ (2) $ 6 Deferred 106 117 18 (3) (23) (2) 2 (15) Investment tax credit amortization (3) (1) — — (1) — — — State Current (13) (6) (4) — 2 — — — Deferred 283 125 52 12 15 (16) 14 12 Total $ 349 $ 264 $ 79 $ 8 $ 9 $ (9) $ 14 $ 3
Effective Income Tax Rate Reconciliation	The effective income tax rate from continuing operations varies from the U.S. federal statutory rate principally due to the following: For the Year Ended December 31, 2024 (a) Exelon ComEd (b) PECO (c) BGE (b) PHI Pepco DPL ACE U.S. federal statutory rate 21.0 % 21.0 % 21.0 % 21.0 % 21.0 % 21.0 % 21.0 % 21.0 % Increase (decrease) due to: State income taxes, net of Federal income tax benefit 5.7 7.8 (2.5) 6.4 6.1 6.1 5.2 7.3 Plant basis differences (4.5) (0.7) (17.8) (1.5) (0.8) (1.0) (1.1) 0.3 Excess deferred tax amortization (13.9) (17.3) (2.9) (17.1) (5.5) (6.8) (5.6) (2.0) Amortization of investment tax credit, including deferred taxes on basis differences (0.1) (0.1) — — (0.1) — (0.1) (0.1) Tax credits (0.6) (0.8) — (0.5) (0.5) (0.4) (0.4) (0.4) Other 0.2 (0.1) — 0.2 0.1 (0.1) — 0.1 Effective income tax rate 7.8 % 9.8 % (2.2) % 8.5 % 20.3 % 18.8 % 19.0 % 26.2 % For the Year Ended December 31, 2023 (a) Exelon ComEd PECO (c) BGE PHI Pepco DPL ACE U.S. federal statutory rate 21.0 % 21.0 % 21.0 % 21.0 % 21.0 % 21.0 % 21.0 % 21.0 % Increase (decrease) due to: State income taxes, net of Federal income tax benefit (d) 3.9 7.9 (1.0) 6.4 5.9 5.5 6.1 7.1 Plant basis differences (3.9) (0.5) (14.4) (0.9) (1.4) (2.2) (0.7) (0.4) Excess deferred tax amortization (6.6) (5.5) (2.4) (4.6) (8.6) (9.6) (9.4) (4.2) Amortization of investment tax credit, including deferred taxes on basis differences (0.1) (0.1) — — (0.1) — (0.1) (0.2) Tax credits (0.6) (0.6) — (0.6) (0.6) (0.7) (0.4) (0.5) Other 0.1 0.2 0.2 0.2 0.2 0.3 — 0.3 Effective income tax rate 13.8 % 22.4 % 3.4 % 21.5 % 16.4 % 14.3 % 16.5 % 23.1 % For the Year Ended December 31, 2022 (a) Exelon ComEd PECO (e) BGE (e) PHI (e) Pepco (e) DPL (e) ACE (e) U.S. federal statutory rate 21.0 % 21.0 % 21.0 % 21.0 % 21.0 % 21.0 % 21.0 % 21.0 % Increase (decrease) due to: State income taxes, net of federal income tax benefit (f) 8.8 8.0 5.8 2.6 2.1 (4.1) 6.5 6.9 Plant basis differences (4.1) (0.6) (11.9) (1.0) (1.7) (2.7) (0.7) (0.7) Excess deferred tax amortization (11.8) (5.6) (3.0) (19.8) (19.5) (16.8) (18.4) (24.5) Amortization of investment tax credit, including deferred taxes on basis differences (0.1) (0.1) — (0.1) (0.1) — (0.2) (0.2) Tax credits (g) 0.1 (0.3) — (0.7) (0.7) (0.7) (0.6) (0.5) Other (h) 0.6 — 0.2 0.1 0.4 0.3 0.1 — Effective income tax rate 14.5 % 22.4 % 12.1 % 2.1 % 1.5 % (3.0) % 7.7 % 2.0 % __________ (a) Positive percentages represent income tax expense. Negative percentages represent income tax benefit. (b) For ComEd, the lower effective tax rate is primarily due to CEJA which resulted in the acceleration of certain income tax benefits. For BGE, the lower effective tax rate is primarily due to the Maryland multi-year plan which resulted in the acceleration of certain income tax benefits. (c) For PECO, the lower effective tax rate is primarily related to plant basis differences attributable to tax repair deductions. (d) For Exelon, the lower state income taxes, net of federal income tax benefit, is primarily due to the long-term marginal state income tax rate change of $54 million. (e) For PECO, the lower effective tax rate is primarily related to plant basis differences attributable to tax repair deductions partially offset by higher state income taxes, net of federal income tax benefit, related to a one-time expense of $38 million attributable to the change in the Pennsylvania corporate income tax rate. For BGE, PHI, Pepco, DPL, and ACE, the lower effective tax rate is primarily related to the acceleration of certain income tax benefits due to transmission and distribution rate case settlements. (f) For Exelon, the higher state income taxes, net of federal income tax benefit, is primarily due to the long-term marginal state income tax rate change of $67 million and the recognition of a valuation allowance of $40 million against the net deferred tax asset position for certain standalone state filing jurisdictions, partially offset by a one-time impact associated with a state tax benefit of $43 million and indemnification adjustments pursuant to the Tax Matters Agreement of $11 million as a result of the separation. For PECO, the higher state income taxes, net of federal income tax benefit, related to a one-time expense of $38 million attributable to the change in the Pennsylvania corporate income tax rate. (g) For Exelon, reflects the income tax expense related to the write-off of federal tax credits subject to recapture of $15 million as a result of the separation. (h) For Exelon, reflects the nondeductible transaction costs of approximately $12 million arising as part of the separation and indemnification adjustments pursuant to the Tax Matters Agreement of $9 million.
Tax Effects of Temporary Differences	The tax effects of temporary differences and carryforwards, which give rise to significant portions of the deferred tax assets (liabilities), at December 31, 2024 and 2023 are presented below: At December 31, 2024 Exelon ComEd PECO BGE PHI Pepco DPL ACE Plant basis differences $ (13,150) $ (5,069) $ (2,446) $ (2,232) $ (3,371) $ (1,512) $ (975) $ (881) Accrual based contracts 19 — — — 6 — — — Derivatives and other financial instruments 21 36 — — 1 — — — Deferred pension and postretirement obligation 512 (339) (39) (24) (68) (64) (32) — Deferred debt refinancing costs 108 (4) — (2) 98 (3) (1) (1) Regulatory assets and liabilities (1,665) (515) (254) (37) (96) (16) 33 (18) Tax loss carryforward, net of valuation allowances 283 — 63 78 68 — 16 51 Tax credit carryforward 142 — — — — — — — Corporate Alternative Minimum Tax 369 47 166 95 2 2 4 8 Investment in partnerships (27) — — — — — — — Other, net 612 249 77 24 180 85 10 27 Deferred income tax liabilities (net) (12,776) (5,595) (2,433) (2,098) (3,180) (1,508) (945) (814) Unamortized investment tax credits (10) (6) — (1) (3) (1) (1) (2) Total deferred income tax liabilities (net) and unamortized investment tax credits $ (12,786) $ (5,601) $ (2,433) $ (2,099) $ (3,183) $ (1,509) $ (946) $ (816) At December 31, 2023 Exelon ComEd PECO BGE PHI Pepco DPL ACE Plant basis differences $ (12,631) $ (4,993) $ (2,264) $ (2,064) $ (3,262) $ (1,454) $ (947) $ (850) Accrual based contracts 8 — — — 8 — — — Derivatives and other financial instruments 46 37 — — 2 — — — Deferred pension and postretirement obligation 524 (299) (36) (26) (78) (70) (35) (2) Deferred debt refinancing costs 115 (5) — (2) 104 (3) (2) (1) Regulatory assets and liabilities (1,429) (405) (208) (4) (52) 9 45 (4) Tax loss carryforward, net of valuation allowances 295 — 47 77 72 — 18 52 Tax credit carryforward 281 — — — — — — — Corporate Alternative Minimum Tax 264 118 82 55 — — 2 11 Investment in partnerships (28) — — — — — — — Other, net 619 227 58 21 186 88 16 25 Deferred income tax liabilities (net) (11,936) (5,320) (2,321) (1,943) (3,020) (1,430) (903) (769) Unamortized investment tax credits (13) (7) — (2) (4) (1) (1) (2) Total deferred income tax liabilities (net) and $ (11,949) $ (5,327) $ (2,321) $ (1,945) $ (3,024) $ (1,431) $ (904) $ (771)
Summary of Loss Carryforwards	The following table provides Exelon’s, ComEd's, PECO’s, BGE’s, PHI’s, Pepco’s, DPL’s, and ACE’s carryforwards, of which the state related items are presented on a post-apportioned basis, as well as, any corresponding valuation allowances at December 31, 2024. Exelon ComEd PECO BGE PHI Pepco DPL ACE Federal Federal general business credits carryforwards (a) 142 — — — — — — — Corporate Alternative Minimum Tax credit carryforward (b) 369 47 166 95 2 2 4 8 State State net operating loss carryforwards 6,349 — 1,711 1,204 1,392 — 670 722 Deferred taxes on state tax attributes (net of federal taxes) 369 — 67 78 97 — 45 51 Valuation allowance on state tax attributes (net of federal taxes) (c) 86 — 4 — 29 — 29 — Year in which net operating loss or credit carryforwards will begin to expire (d) 2035 N/A 2031 2033 N/A N/A 2033 2031 __________ (a) For Exelon, the federal general business credit carryforward will begin expiring in 2035. (b) For Exelon, ComEd, PECO, BGE and ACE, the Corporate Alternative Minimum Tax credit carryforward has an indefinite carryforward period. (c) For Exelon, a full valuation allowance has been recorded against certain separate company state net operating loss carryforwards that are expected to expire before realization. For PECO, a valuation allowance has been recorded against certain Pennsylvania net operating losses that are expected to expire before realization. For DPL, a full valuation allowance has been recorded against Delaware net operating losses carryforwards due to a change in Delaware tax law that restricts the ability for corporate taxpayers to monetize net operating losses. (d) A portion of Exelon's, BGE's, and DPL's Maryland state net operating loss carryforward have an indefinite carryforward period.
Schedule of Unrecognized Tax Benefits Roll Forward	The following table presents changes in unrecognized tax benefits, for Exelon, PHI, and ACE. ComEd's, PECO's, BGE's, Pepco's, and DPL's amounts are not material. Exelon (a) PHI ACE Balance at January 1, 2022 $ 143 $ 56 $ 16 Change to positions that only affect timing (1) 1 1 Increases based on tax positions related to 2022 3 2 — Increases based on tax positions prior to 2022 3 — — Decreases based on tax positions prior to 2022 — — — Balance at December 31, 2022 $ 148 $ 59 $ 17 Change to positions that only affect timing (57) (9) (2) Increases based on tax positions related to 2023 3 1 — Increases based on tax positions prior to 2023 1 — — Decreases based on tax positions prior to 2023 (1) — — Balance at December 31, 2023 $ 94 $ 51 $ 15 Change to positions that only affect timing 10 10 — Increases based on tax positions related to 2024 4 1 — Increases based on tax positions prior to 2024 2 — — Decreases based on tax positions prior to 2024 (14) (14) (14) Balance at December 31, 2024 $ 96 $ 48 $ 1 ______ (a) At December 31, 2024 and 2023, Exelon recorded a receivable of $31 million and $31 million, respectively, in noncurrent Other assets in the Consolidated Balance Sheet for Constellation’s share of unrecognized tax benefits for periods prior to the separation.
Summary of Positions for which Significant Change in Unrecognized Tax Benefits is Reasonably Possible	The following table presents Exelon's unrecognized tax benefits that, if recognized, would decrease the effe ctive tax rate. The Utility Registrants' amounts are not material. Exelon December 31, 2024 $ 69 December 31, 2023 71 December 31, 2022 90
Total amounts of interest and penalties recognized	The following table represents the net interest and penalties receivable (payable) related to tax positions reflected in Exelon's Consolidated Balance Sheets. The Utility Registrants' amounts are not material. Net interest and penalties receivable at Exelon December 31, 2024 (a) $ 76 December 31, 2023 (b) 62 __________ (a) At December 31, 2024, Exelon classified $27 million and $49 million of the interest receivable as current and noncurrent, respectively, based on the expected timing for settlement in cash. At December 31, 2024, Exelon recorded a receivable of $9 million in noncurrent Other assets in the Consolidated Balance Sheet for Constellation's share of net interest for periods prior to the separation. (b) At December 31, 2023, Exelon classified $21 million and $41 million of the interest receivable as current and noncurrent, respectively, based on the expected timing for settlement in cash. At December 31, 2023, Exelon recorded a receivable of $5 million in noncurrent Other assets in the Consolidated Balance Sheet for Constellation's share of net interest for periods prior to the separation.
Summary of Income Tax Examinations	Description of Tax Years Open to Assessment by Major Jurisdiction Major Jurisdiction Open Years Registrants Impacted Federal consolidated income tax returns (a) 2010-2023 All Registrants Delaware separate corporate income tax returns Same as federal DPL District of Columbia combined corporate income tax returns 2021-2023 Exelon, PHI, Pepco Illinois unitary corporate income tax returns 2012-2023 Exelon, ComEd Maryland separate company corporate net income tax returns Same as federal BGE, Pepco, DPL New Jersey combined corporate income tax returns 2020-2023 Exelon New Jersey separate corporate income tax returns 2020-2023 ACE New York combined corporate income tax returns 2019-2023 Exelon Pennsylvania separate corporate income tax returns 2021-2023 Exelon Pennsylvania separate corporate income tax returns 2021-2023 PECO __________ (a)
Long-Term Marginal State Income Tax Rate	There were no impacts to ComEd, BGE, PHI, Pepco, DPL, and ACE for the years ended December 31, 2024, 2023, and 2022. December 31, 2024 Exelon Decrease to Deferred Income Tax Liability and Income Tax Expense, Net of Federal Taxes $ — December 31, 2023 Decrease to Deferred Income Tax Liability and Income Tax Expense, Net of Federal Taxes (54) December 31, 2022 Increase to Deferred Income Tax Liability and Income Tax Expense, Net of Federal Taxes 67
Allocation of Federal Tax Benefit Under Tax Sharing Agreement	The following table presents the allocation of tax benefits from Exelon under the Tax Sharing Agreement, for the year ended December 31, 2024, 2023, and 2022. ComEd PECO BGE PHI Pepco DPL ACE December 31, 2024 $ 30 $ 15 $ 14 $ 16 $ 9 $ 5 $ 2 December 31, 2023 (a) 13 19 — 10 4 — 2 December 31, 2022 (b) 1 47 — 28 23 3 2 __________ (a) BGE and DPL did not record an allocation of federal tax benefits from Exelon under the Tax Sharing Agreement as a result of a tax net operating loss. (b) BGE did not record an allocation of federal tax benefits from Exelon under the Tax Sharing Agreement as a result of a tax net operating loss.

Retirement Benefits (Tables)

Retirement Benefits (Tables)	12 Months Ended
	Dec. 31, 2024
Retirement Benefits [Abstract]
Defined Benefit Plan Change In Benefit Obligation RollForward	The following tables provide a rollforward of the changes in the benefit obligations and plan assets of Exelon for the most recent two years for all plans combined: Pension Benefits OPEB 2024 2023 2024 2023 Change in benefit obligation: Net benefit obligation as of the beginning of year $ 10,988 $ 10,677 $ 1,908 $ 1,884 Service cost 166 155 27 26 Interest cost 565 578 96 101 Plan participants’ contributions — — 27 27 Actuarial (gain) loss⁽ᵃ⁾ (331) 406 (32) 55 Plan amendments — 4 — — Settlements (22) (42) — — Gross benefits paid (821) (790) (189) (185) Net benefit obligation as of the end of year $ 10,545 $ 10,988 $ 1,837 $ 1,908 Pension Benefits OPEB 2024 2023 2024 2023 Change in plan assets: Fair value of net plan assets as of the beginning of year $ 9,402 $ 9,521 $ 1,355 $ 1,351 Actual return on plan assets 100 638 108 108 Employer contributions 126 75 54 54 Plan participants’ contributions — — 27 27 Gross benefits paid (821) (790) (189) (185) Settlements (22) (42) — — Fair value of net plan assets as of the end of year $ 8,785 $ 9,402 $ 1,355 $ 1,355 __________ (a) The pension and OPEB gains in 2024 primarily reflect an increase in the discount rate. The pension and OPEB losses in 2023 primarily reflect a decrease in the discount rate.
Schedule of Amounts Recognized in Balance Sheet	Exelon presents its benefit obligations and plan assets net on its Consolidated Balance Sheets within the following line items: Pension Benefits OPEB 2024 2023 2024 2023 Other noncurrent assets $ — $ — $ 10 $ — Other current liabilities (15) (15) (20) (26) Pension obligations (1,745) (1,571) — — Non-pension postretirement benefit obligations — — (472) (527) Unfunded status, net (net benefit obligation less plan assets) $ (1,760) $ (1,586) $ (482) $ (553)
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets	The following table provides the ABO and fair value of plan assets for all pension plans with an ABO in excess of plan assets. Information for pension and OPEB plans with projected benefit obligations (PBO) and accumulated postretirement benefit obligations (APBO), respectively, in excess of plan assets have been disclosed in the Obligations and Plan Assets table above as all pension and a majority of the OPEB plans are underfunded. Exelon 2024 2023 ABO $ 10,076 $ 10,376 Fair value of net plan assets 8,785 9,279
Calculation of Net Periodic Benefit Costs	The following table presents the components of Exelon’s net periodic benefit costs, prior to capitalization, for the years ended December 31, 2024, 2023, and 2022. Pension Benefits OPEB 2024 2023 2022 2024 2023 2022 Components of net periodic benefit cost: Service cost $ 166 $ 155 $ 236 $ 27 $ 26 $ 41 Interest cost 565 578 439 96 101 76 Expected return on assets (736) (755) (822) (84) (83) (99) Amortization of: Prior service cost (credit) 2 2 2 (8) (10) (19) Actuarial loss (gain) 214 166 295 — (2) 12 Settlement and other charges 10 20 — — — — Net periodic benefit cost $ 221 $ 166 $ 150 $ 31 $ 32 $ 11
Schedule Of Pension And Other Postretirement Benefit Costs	The amounts below represent the Registrants' allocated pension and OPEB costs (benefit). For Exelon, the service cost component is included in Operating and maintenance expense and Property, plant, and equipment, net while the non-service cost components are included in Other, net and Regulatory assets. For PHI and each of the Utility Registrants, the service cost and non-service cost components are included in Operating and maintenance expense and Property, plant, and equipment, net in their consolidated financial statements. For the Years Ended December 31, Exelon ComEd PECO BGE PHI Pepco DPL ACE 2024 $ 252 $ 72 $ (1) $ 59 $ 93 $ 32 $ 15 $ 12 2023 198 26 (14) 56 99 34 18 13 2022 161 60 (9) 44 53 9 3 12
Changes In Plan Assets And Benefit Obligations Recognized In OCI And Regulatory Assets	The following tables provide the components of AOCI and Regulatory assets (liabilities) for Exelon for the years ended December 31, 2024, 2023, and 2022 for all plans combined. The tables include amounts related to Generation prior to the separation. Pension Benefits OPEB 2024 2023 2022 2024 2023 2022 Changes in plan assets and benefit obligations recognized in AOCI and Regulatory assets (liabilities): Current year actuarial loss (gain) $ 305 $ 523 $ (226) $ (56) $ 30 $ (271) Amortization of actuarial (loss) gain (214) (166) (295) — 2 (12) Separation of Constellation — — (2,631) — — (43) Current year prior service cost — 4 — — — — Amortization of prior service (cost) credit (2) (2) (2) 8 10 19 Settlements (10) (20) — — — — Total recognized in AOCI and Regulatory assets (liabilities) $ 79 $ 339 $ (3,154) $ (48) $ 42 $ (307) Total recognized in AOCI $ 56 $ 99 $ (2,719) $ (1) $ 4 $ (74) Total recognized in Regulatory assets (liabilities) $ 23 $ 240 $ (435) $ (47) $ 38 $ (233)
Schedule of Amounts in Accumulated Other Comprehensive Income (Loss) to be Recognized over Next Fiscal Year	The following table provides the components of gross AOCI and Regulatory assets (liabilities) for Exelon that have not been recognized as components of periodic benefit cost as of December 31, 2024 and 2023, respectively, for all plans combined: Pension Benefits OPEB 2024 2023 2024 2023 Prior service cost (credit) $ 19 $ 21 $ (37) $ (45) Actuarial loss (gain) 4,029 3,948 (157) (101) Total $ 4,048 $ 3,969 $ (194) $ (146) Total included in AOCI $ 1,028 $ 972 $ (18) $ (17) Total included in Regulatory assets (liabilities) $ 3,020 $ 2,997 $ (176) $ (129)
Defined Benefit Plan Weighted Average Assumptions Used In Calculating Benefit Obligation	For Exelon, the following assumptions were used to determine the benefit obligations for the plans as of December 31, 2024 and 2023. Assumptions used to determine year-end benefit obligations are the assumptions used to estimate the subsequent year’s net periodic benefit costs. Pension Benefits OPEB 2024 2023 2024 2023 Discount rate (a) 5.68 % 5.19 % 5.64 % 5.17 % Investment crediting rate (b) 5.69 % 5.03 % N/A N/A Rate of compensation increase 3.75 % 3.75 % 3.75 % 3.75 % Mortality table Pri-2012 table with MP- 2021 improvement scale (adjusted) Pri-2012 table with MP- 2021 improvement scale (adjusted) Pri-2012 table with MP- 2021 improvement scale (adjusted) Pri-2012 table with MP- 2021 improvement scale (adjusted) Health care cost trend on covered charges N/A N/A Initial and ultimate trend rate of 5.00% Initial and ultimate trend rate of 5.00% __________ (a) The discount rates above represent the blended rates used to determine the majority of Exelon’s pension and OPEB obligations. Certain benefit plans used individual rates, which range from 5.56% - 5.76% and 5.60% - 5.64% for pension and OPEB plans, respectively, as of December 31, 2024 and 5.11% - 5.27% and 5.15% - 5.17% for pension and OPEB plans, respectively, as of December 31, 2023. (b) The investment crediting rate above represents a weighted average rate.
Defined Benefit Plan Weighted Average Assumptions Used In Calculating Net Periodic Benefit Cost	The following assumptions were used to determine the net periodic benefit cost for Exelon for the years ended December 31, 2024, 2023 and 2022: Pension Benefits OPEB 2024 2023 2022 2024 2023 2022 Discount rate (a) 5.19 % 5.53 % 3.24 % 5.17 % 5.51 % 3.20 % Investment crediting rate (b) 5.03 % 5.07 % 3.75 % N/A N/A N/A Expected return on plan assets (c) 7.00 % 7.00 % 7.00 % 6.50 % 6.50 % 6.44 % Rate of compensation increase 3.75 % 3.75 % 3.75 % 3.75 % 3.75 % 3.75 % Mortality table Pri-2012 table with MP- 2021 improvement scale (adjusted) Pri-2012 table with MP- 2021 improvement scale (adjusted) Pri-2012 table with MP- 2021 improvement scale (adjusted) Pri-2012 table with MP- 2021 improvement scale (adjusted) Pri-2012 table with MP- 2021 improvement scale (adjusted) Pri-2012 table with MP- 2021 improvement scale (adjusted) Health care cost trend on covered charges N/A N/A N/A Initial and ultimate rate of 5.00% Initial and ultimate rate of 5.00% Initial and ultimate rate of 5.00% __________ (a) The discount rates above represent the blended rates used to establish the majority of Exelon’s pension and OPEB costs. Certain benefit plans used individual rates, which range from 5.11%-5.27% and 5.15%-5.17% for pension and OPEB plans, respectively, for the year ended December 31, 2024; 5.46%-5.60% and 5.49%-5.51% for pension and OPEB plans; respectively, for the year ended December 31, 2023; and 2.55%-3.24% and 2.84%-3.20% for pension and OPEB plans, respectively, for the year ended December 31, 2022. (b) The investment crediting rate above represents a weighted average rate. (c) Not applicable to pension and OPEB plans that do not have plan assets.
Pension And Other Postretirement Benefit Contributions	The following table provides contributions to the pension and OPEB plans: Pension Benefits OPEB 2024 2023 2022 2024 2023 2022 Exelon $ 126 $ 75 $ 570 $ 54 $ 54 $ 42 ComEd 7 24 176 18 17 8 PECO 3 1 15 1 — 3 BGE 17 — 48 20 19 20 PHI 74 8 69 12 16 9 Pepco 1 1 3 8 11 8 DPL 1 2 1 2 2 — ACE 7 — 7 2 3 — The following table provides all Registrants' planned contributions to the qualified pension plans, planned benefit payments to non-qualified pension plans, and planned contributions to OPEB plans in 2025: Qualified Pension Plans Non-Qualified Pension Plans OPEB Exelon $ 275 $ 16 $ 45 ComEd 187 2 21 PECO 9 1 1 BGE 26 1 14 PHI 36 8 7 Pepco 1 1 6 DPL 1 — 1 ACE 4 — 1
Schedule of Expected Benefit Payments	Estimated future benefit payments to participants in all of the pension plans and postretirement benefit plans as of December 31, 2024 were: Pension Benefits OPEB 2025 $ 809 $ 156 2026 809 157 2027 821 156 2028 811 155 2029 815 154 2030 through 2034 4,019 746 Total estimated future benefits payments through 2034 $ 8,084 $ 1,524
Defined Benefit Plan Weighted Average Asset Allocations And Target Allocations	Exelon’s pension and OPEB plan target asset allocations as of December 31, 2024 and 2023 were as follows: December 31, 2024 December 31, 2023 Asset Category Pension Benefits OPEB Pension Benefits OPEB Equity securities 28 % 44 % 28 % 44 % Fixed income securities 44 % 41 % 44 % 41 % Alternative investments (a) 28 % 15 % 28 % 15 % Total 100 % 100 % 100 % 100 % __________ (a) Alternative investments include private equity, hedge funds, real estate, and private credit.
Defined Benefit Plan Fair Value Of Plan Assets	The following tables present pension and OPEB plan assets measured and recorded at fair value in Exelon's Consolidated Balance Sheets on a recurring basis and their level within the fair value hierarchy as of December 31, 2024 and 2023: December 31, 2024 December 31, 2023 Level 1 Level 2 Level 3 Not Subject to Leveling Total Level 1 Level 2 Level 3 Not Subject to Leveling Total Pension plan assets (a) Cash and cash equivalents $ 205 $ — $ — $ — $ 205 $ 267 $ — $ — $ — $ 267 Equities (b) 1,127 — 1 1,361 2,489 1,513 — 1 694 2,208 Fixed income: U.S. Treasury and agencies 1,333 199 — — 1,532 1,291 184 — — 1,475 State and municipal debt — 32 — — 32 — 42 — — 42 Corporate debt — 1,551 16 — 1,567 — 1,792 9 — 1,801 Other (b) — 25 — 618 643 — 79 — 788 867 Fixed income subtotal 1,333 1,807 16 618 3,774 1,291 2,097 9 788 4,185 Private equity — — — 1,249 1,249 — — — 1,166 1,166 Hedge funds — — — 464 464 — — — 578 578 Real estate — — — 730 730 — — — 760 760 Private credit — — — 544 544 — — — 626 626 Pension plan assets subtotal $ 2,665 $ 1,807 $ 17 $ 4,966 $ 9,455 $ 3,071 $ 2,097 $ 10 $ 4,612 $ 9,790 OPEB plan assets (a) Cash and cash equivalents $ 44 $ — $ — $ — $ 44 $ 45 $ — $ — $ — $ 45 Equities 437 1 — 188 626 315 1 — 270 586 Fixed income: U.S. Treasury and agencies 18 34 — — 52 15 54 — — 69 State and municipal debt — 2 — — 2 — 7 — — 7 Corporate debt — 32 — — 32 — 44 — — 44 Other 166 2 — 262 430 175 4 — 206 385 Fixed income subtotal 184 70 — 262 516 190 109 — 206 505 Hedge funds — — — 75 75 — — — 109 109 Real estate — — — 78 78 — — — 88 88 Private credit — — — 16 16 — — — 22 22 OPEB plan assets subtotal $ 665 $ 71 $ — $ 619 $ 1,355 $ 550 $ 110 $ — $ 695 $ 1,355 Total pension and OPEB plan assets (c) $ 3,330 $ 1,878 $ 17 $ 5,585 $ 10,810 $ 3,621 $ 2,207 $ 10 $ 5,307 $ 11,145 __________ (a) See Note 17—Fair Value of Financial Assets and Liabilities for a description of levels within the fair value hierarchy. (b) Includes derivative instruments of $(21) million and $51 million for the years ended December 31, 2024 and 2023, respectively, which have total notional amounts of $5,123 million and $3,351 million as of December 31, 2024 and 2023, respectively. The notional principal amounts for these instruments provide one measure of the transaction volume outstanding as of the fiscal years ended and do not represent the amount of Exelon's exposure to credit or market loss. (c) Excludes net liabilities of $670 million and $388 million as of December 31, 2024 and 2023, respectively, which include certain derivative assets that have notional amounts of $41 million and $59 million as of December 31, 2024 and 2023, respectively. These items are required to reconcile to the fair value of net plan assets and consist primarily of receivables or payables related to pending securities sales and purchases, interest and dividends receivable, and repurchase agreement obligations. The repurchase agreements generally have maturities ranging from 3 - 6 months.
Schedule of Changes in Fair Value of Plan Assets	The following table presents the reconciliation of Level 3 assets and liabilities for Exelon measured at fair value for pension and OPEB plans for the years ended December 31, 2024 and 2023: Fixed Income Equities Total Pension Assets Balance as of January 1, 2024 $ 9 $ 1 $ 10 Actual return on plan assets: Relating to assets still held as of the reporting date (1) — (1) Purchases, sales and settlements: Purchases 2 — 2 Level 3 transfers in 6 — 6 Balance as of December 31, 2024 $ 16 $ 1 $ 17 Fixed Income Equities Total Pension Assets Balance as of January 1, 2023 $ 12 $ — $ 12 Actual return on plan assets: Relating to assets still held as of the reporting date — — — Purchases, sales and settlements: Purchases — — — Level 3 transfers (out) in (3) 1 (2) Balance as of December 31, 2023 $ 9 $ 1 $ 10 _
Schedule Of Defined Contributions	The Registrants participate in a 401(k) defined contribution savings plan that is sponsored by Exelon. The plan is qualified under applicable sections of the IRC and allows employees to contribute a portion of their pre-tax and/or after-tax income in accordance with specified guidelines. All Registrants match a percentage of the employee contributions up to certain limits. The following table presents the employer contributions and employer matching contributions to the savings plan for the years ended December 31, 2024, 2023, and 2022: For the Years Ended December 31, Exelon ComEd PECO BGE PHI Pepco DPL ACE 2024 $ 112 $ 46 $ 15 $ 12 19 $ 5 $ 5 $ 3 2023 109 47 15 12 16 4 3 2 2022 91 39 13 11 14 4 3 2

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments	The following table provides a summary of the Utility Registrants’ primary derivative hedging instruments, listed by commodity and accounting treatment. Registrant Commodity Accounting Treatment Hedging Instrument ComEd Electricity NPNS Fixed price contracts based on all requirements in the IPA procurement plans. Electricity Changes in fair value of economic hedge recorded to an offsetting regulatory asset or liability (a) 20-year floating-to-fixed energy swap contracts beginning June 2012 based on the renewable energy resource procurement requirements in the Illinois Settlement Legislation of approximately 1.3 million MWhs per year. PECO Electricity NPNS Fixed price contracts for default supply requirements through full requirements contracts. Gas NPNS Fixed price contracts to cover about 10% of planned natural gas purchases in support of projected firm sales. BGE Electricity NPNS Fixed price contracts for all SOS requirements through full requirements contracts. Gas NPNS Fixed price purchases associated with forecasted gas supply requirements. Pepco Electricity NPNS Fixed price contracts for all SOS requirements through full requirements contracts. DPL Electricity NPNS Fixed price contracts for all SOS requirements through full requirements contracts. Gas NPNS Fixed and index priced contracts through full requirements contracts. Gas Changes in fair value of economic hedge recorded to an offsetting regulatory asset or liability (b) Exchange traded future contracts for up to 50% of estimated monthly purchase requirements each month, including purchases for storage injections. ACE Electricity NPNS Fixed price contracts for all BGS requirements through full requirements contracts. _________ (a) See Note 3—Regulatory Matters for additional information. (b) The fair value of the DPL economic hedge is not material as of December 31, 2024 and 2023.
Schedule of Interest Rate Derivatives	Below is a summary of the interest rate hedge balances at December 31, 2024 and 2023. December 31, 2024 Derivatives Designated Economic Hedges Total Other current assets $ 14 $ — $ 14 Other deferred debits (noncurrent assets) 12 — 12 Total derivative assets 26 — 26 Mark-to-market derivative liabilities (current liabilities) (1) — (1) Total mark-to-market derivative liabilities (1) — (1) Total mark-to-market derivative net assets $ 25 $ — $ 25 December 31, 2023 Derivatives Designated Economic Hedges Total Other current assets 11 1 $ 12 Total derivative assets 11 1 12 Mark-to-market derivative liabilities (current liabilities) (24) (22) (46) Total mark-to-market derivative liabilities (24) (22) (46) Total mark-to-market derivative net liabilities $ (13) $ (21) $ (34)
Schedule of Notional Amounts of Outstanding Derivative Positions	The following table provides the notional amounts outstanding held by Exelon at December 31, 2024 and 2023. December 31, 2024 December 31, 2023 5-year maturity floating-to-fixed swaps $ 657 $ 655 10-year maturity floating-to-fixed swaps 658 655 Total $ 1,315 $ 1,310
Derivatives Not Designated as Hedging Instruments
Derivative Instruments, Gain (Loss)	Exelon Corporate recognized the following net pre-tax mark-to-market (losses) which are also recognized in Net fair value changes related to derivatives in Exelon's Consolidated Statements of Cash Flows. Twelve months ended December 31, 2024 Twelve months ended December 31, 2023 Income Statement Location Gain (Loss) Gain (Loss) Electric operating revenues $ — $ (20) Interest expense — — Total $ — $ (20)
Cash collateral held with external counterparties	The following table reflects the Registrants' cash collateral held from external counterparties, which is recorded in Other current liabilities on their respective Consolidated Balance Sheets, at December 31, 2024 and 2023 December 31, 2024 December 31, 2023 Exelon $ 181 $ 148 ComEd 176 146 PECO (a) — — BGE 1 1 PHI 4 1 Pepco 1 1 DPL 2 — ACE (a) — — __________ (a) PECO and ACE had less than one million in cash collateral held with external parties as of December 31, 2024 and 2023 (b) DPL had less than one million in cash collateral held with external parties at December 31, 2023.

Debt and Credit Agreements (Tab

Debt and Credit Agreements (Tables)	12 Months Ended
	Dec. 31, 2024
Debt Disclosure [Abstract]
Schedule of Commercial Paper Borrowings	The following table reflects the Registrants' commercial paper programs supported by the revolving credit agreements at December 31, 2024 and 2023: Credit Facility Size Outstanding Commercial Average Interest Rate on Commercial Paper Issuer 2024 (a) 2023 (a) 2024 2023 2024 2023 Exelon (b) $ 4,000 $ 4,000 $ 1,359 $ 1,624 4.66 % 5.58 % ComEd $ 1,000 $ 1,000 $ 36 $ 202 4.55 % 5.53 % PECO $ 600 $ 600 $ 192 $ 165 4.65 % 5.57 % BGE $ 600 $ 600 $ 175 $ 336 4.61 % 5.59 % PHI (c) $ 900 $ 900 $ 530 $ 394 4.70 % 5.60 % Pepco $ 300 (d) $ 300 $ 200 $ 132 4.69 % 5.59 % DPL $ 300 (d) $ 300 $ 144 $ 63 4.74 % 5.60 % ACE $ 300 (d) $ 300 $ 186 $ 199 4.67 % 5.60 % __________ (a) Excludes credit facility agreements arranged at minority and community banks. See below for additional information. (b) Includes revolving credit agreements at Exelon Corporate with a maximum program size of $900 million as of December 31, 2024 and December 31, 2023. Exelon Corporate had $426 million in outstanding commercial paper as of December 31, 2024 and $527 million outstanding commercial paper as of December 31, 2023. (c) Represents the consolidated amounts of Pepco, DPL, and ACE. (d)
Schedule of Aggregate Bank Commitments, Credit Facility Borrowings, and Available Capacity	At December 31, 2024, the Registrants had the following aggregate bank commitments, credit facility borrowings, and available capacity under their respective credit facilities: Available Capacity at December 31, 2024 Borrower Facility Type Aggregate Bank (a) Facility Draws Outstanding Actual To Support Additional Commercial (b) Exelon (b) Syndicated Revolver $ 4,000 $ — $ 49 $ 3,951 $ 2,592 ComEd Syndicated Revolver 1,000 — 15 985 949 PECO Syndicated Revolver 600 — 4 596 404 BGE Syndicated Revolver 600 — 25 575 400 PHI (c) Syndicated Revolver 900 — 2 898 368 Pepco Syndicated Revolver 300 — 2 298 98 DPL Syndicated Revolver 300 — — 300 156 ACE Syndicated Revolver 300 — — 300 114 __________ (a) Excludes credit facility agreements arranged at minority and community banks. See below for additional information. (b) Includes $900 million aggregate bank commitment related to Exelon Corporate. Exelon Corporate had $3 million outstanding letters of credit as of December 31, 2024. Exelon Corporate had $471 million in available capacity to support additional commercial paper as of December 31, 2024. (c) Represents the consolidated amounts of Pepco, DPL, and ACE. The following table reflects the Registrants' credit facility agreements arranged at minority and community banks at December 31, 2024 and 2023. These are excluded from the Maximum Program Size and Aggregate Bank Commitment amounts within the two tables above and the facilities may be used to issue letters of credit. Aggregate Bank Commitments Outstanding Letters of Credit Borrower 2024 (a) 2023 2024 2023 Exelon (b) $ 140 $ 140 $ 5 $ 10 ComEd 40 40 3 7 PECO 40 40 — 1 BGE 15 15 2 2 PHI (c) 45 45 — — Pepco 15 15 — — DPL 15 15 — — ACE 15 15 — — __________ (a) These facilities were entered into on October 4, 2024 and expire on October 3, 2025. (b) Represents the consolidated amounts of ComEd, PECO, BGE, Pepco, DPL, and ACE. (c) Represents the consolidated amounts of Pepco, DPL, and ACE. Revolving Credit Agreements On August 29, 2024, Exelon Corporate and each of the Utility Registrants amended and restated their respective syndicated revolving credit facility, extending the maturity date to August 29, 2029. The following table reflects the credit agreements: Borrower Aggregate Bank Commitment Interest Rate Exelon Corporate $ 900 SOFR plus 1.275% ComEd $ 1,000 SOFR plus 1.000% PECO $ 600 SOFR plus 0.900% BGE $ 600 SOFR plus 0.900% Pepco $ 300 SOFR plus 1.075% DPL $ 300 SOFR plus 1.000% ACE $ 300 SOFR plus 1.000%
Schedule of Basis Spread	Borrowings under Exelon’s, ComEd’s, PECO’s, BGE's, Pepco's, DPL's, and ACE's revolving credit agreements bear interest at a rate based upon either the prime rate or a SOFR-based rate, plus an adder based upon the particular Registrant’s credit rating. The adders for the prime based borrowings and SOFR-based borrowings as of December 31, 2024 are presented in the following table: Exelon (a) ComEd PECO BGE Pepco DPL ACE Prime based borrowings 0 - 27.5 — — — 7.5 — — SOFR-based borrowings 90.0 - 127.5 100.0 90.0 90.0 107.5 100.0 100.0 __________ (a) Includes interest rate adders at Exelon Corporate of 27.5 basis points and 127.5 basis points for prime and SOFR-based borrowings, respectively.
Schedule of Long-Term Debt Instruments	Long-Term Debt The following tables present the outstanding long-term debt at the Registrants at December 31, 2024 and 2023: Exelon Maturity December 31, Rates 2024 2023 Long-term debt First mortgage bonds (a) 1.05 % - 7.90 % 2025 - 2054 $ 26,451 $ 24,776 Senior unsecured notes 2.75 % - 7.60 % 2025 - 2053 12,280 10,824 Unsecured notes 2.25 % - 6.35 % 2026 - 2054 5,450 4,650 Notes payable and other 1.64 % - 7.49 % 2025 - 2053 83 84 Long-term software licensing agreement 2.30 % - 2.30 % 2025 4 12 Unsecured tax-exempt bonds 4.15 % - 4.20 % 2024 — 33 Medium-terms notes (unsecured) 7.72 % 2027 10 10 Loan agreement (b) 6.23 % 2024 — 500 Total long-term debt 44,278 40,889 Unamortized debt discount and premium, net (94) (80) Unamortized debt issuance costs (326) (296) Fair value adjustment 542 582 Long-term debt due within one year (1,453) (1,403) Long-term debt $ 42,947 $ 39,692 Long-term debt to financing trusts (c) Subordinated debentures to ComEd Financing III 6.35 % 2033 $ 206 $ 206 Subordinated debentures to PECO Trust III 7.38 % - 9.50 % 2028 81 81 Subordinated debentures to PECO Trust IV 5.75 % 2033 103 103 Total long-term debt to financing trusts $ 390 $ 390 __________ (a) Substantially all of ComEd’s assets other than expressly excluded property and substantially all of PECO’s, Pepco's, DPL's, and ACE's assets are subject to the liens of their respective mortgage indentures. (b) Pursuant to the loan agreement, loans made thereunder bear interest at a variable rate equal to SOFR plus 0.85%. (c) Amounts owed to these financing trusts are recorded as Long-term debt to financing trusts within Exelon’s Consolidated Balance Sheets. ComEd Maturity December 31, Rates 2024 2023 Long-term debt First mortgage bonds (a) 2.20 % - 6.45 % 2026 - 2054 $ 12,154 $ 11,603 Other 7.49 % 2053 8 8 Total long-term debt 12,162 11,611 Unamortized debt discount and premium, net (31) (28) Unamortized debt issuance costs (101) (97) Long-term debt due within one year — (250) Long-term debt $ 12,030 $ 11,236 Long-term debt to financing trust (b) Subordinated debentures to ComEd Financing III 6.35 % 2033 $ 206 $ 206 Total long-term debt to financing trusts 206 206 Unamortized debt issuance costs — (1) Long-term debt to financing trusts $ 206 $ 205 __________ (a) Substantially all of ComEd’s assets, other than expressly excluded property, are subject to the lien of its mortgage indenture. (b) Amount owed to this financing trust is recorded as Long-term debt to financing trust within ComEd’s Consolidated Balance Sheets. PECO Maturity December 31, Rates 2024 2023 Long-term debt First mortgage bonds (a) 2.80 % - 5.95 % 2025 - 2054 $ 5,775 $ 5,200 Total long-term debt 5,775 5,200 Unamortized debt discount and premium, net (25) (24) Unamortized debt issuance costs (46) (42) Long-term debt due within one year (350) — Long-term debt $ 5,354 $ 5,134 Long-term debt to financing trusts (b) Subordinated debentures to PECO Trust III 7.38 % - 9.50 % 2028 $ 81 $ 81 Subordinated debentures to PECO Trust IV 5.75 % 2033 103 103 Long-term debt to financing trusts $ 184 $ 184 __________ (a) Substantially all of PECO’s assets are subject to the lien of its mortgage indenture. (b) Amounts owed to this financing trust are recorded as Long-term debt to financing trusts within PECO’s Consolidated Balance Sheets. BGE Maturity December 31, Rates 2024 2023 Long-term debt Unsecured notes 2.25 % - 6.35 % 2026 - 2054 $ 5,450 $ 4,650 Total long-term debt 5,450 4,650 Unamortized debt discount and premium, net (13) (12) Unamortized debt issuance costs (42) (36) Long-term debt due within one year — — Long-term debt $ 5,395 $ 4,602 PHI Maturity December 31, Rates 2024 2023 Long-term debt First mortgage bonds (a) 1.05 % - 7.90 % 2025 - 2054 $ 8,522 $ 7,972 Senior unsecured notes 7.45 % 2032 185 185 Unsecured tax-exempt bonds 4.15 % - 4.20 % 2024 — 33 Medium-terms notes (unsecured) 7.72 % 2027 10 10 Finance leases 5.62 % 2025 - 2032 75 74 Total long-term debt 8,792 8,274 Unamortized debt discount and premium, net (2) — Unamortized debt issuance costs (66) (55) Fair value adjustment 400 429 Long-term debt due within one year (290) (644) Long-term debt $ 8,834 $ 8,004 _________ (a) Substantially all of Pepco's, DPL's, and ACE's assets are subject to the liens of their respective mortgage indentures. Pepco Maturity December 31, Rates 2024 2023 Long-term debt First mortgage bonds (a) 2.32 % - 7.90 % 2029 - 2054 $ 4,400 $ 4,125 Finance leases 5.62 % 2025 - 2032 27 26 Total long-term debt 4,427 4,151 Unamortized debt discount and premium, net — 2 Unamortized debt issuance costs (65) (57) Long-term debt due within one year (6) (405) Long-term debt $ 4,356 $ 3,691 ________ (a) Substantially all of Pepco's assets are subject to the lien of its mortgage indenture. DPL Maturity December 31, Rates 2024 2023 Long-term debt First mortgage bonds (a) 1.05 % - 5.72 % 2025 - 2054 $ 2,198 $ 2,024 Unsecured tax-exempt bonds 4.15 % - 4.20 % 2024 — 33 Medium-terms notes (unsecured) 7.72 % 2027 10 10 Finance leases 5.62 % 2025 - 2032 28 29 Total long-term debt 2,236 2,096 Unamortized debt issuance costs (16) (16) Long-term debt due within one year (130) (84) Long-term debt $ 2,090 $ 1,996 __________ (a) Substantially all of DPL's assets are subject to the lien of its mortgage indenture. ACE Maturity December 31, Rates 2024 2023 Long-term debt First mortgage bonds (a) 2.25 % - 5.80 % 2025 - 2054 $ 1,923 $ 1,823 Finance leases 5.62 % 2025 - 2032 20 19 Total long-term debt 1,943 1,842 Unamortized debt issuance costs (10) (9) Long-term debt due within one year (154) (154) Long-term debt $ 1,779 $ 1,679 __________ (a) Substantially all of ACE's assets are subject to the lien of its mortgage indenture.
Schedule of Maturities of Long-Term Debt	Long-term debt maturities at the Registrants in the periods 2025 through 2029 and thereafter are as follows: Year Exelon ComEd PECO BGE PHI Pepco DPL ACE 2025 $ 1,453 $ — $ 350 $ — $ 290 $ 6 $ 130 $ 154 2026 1,618 500 — 350 19 7 7 5 2027 1,025 350 — — 25 5 16 4 2028 1,992 550 81 — 361 4 4 353 2029 930 — — — 281 153 3 125 Thereafter 37,650 (a) 10,968 (b) 5,528 (c) 5,100 7,816 4,252 2,076 1,302 Total $ 44,668 $ 12,368 $ 5,959 $ 5,450 $ 8,792 $ 4,427 $ 2,236 $ 1,943 __________ (a) Includes $390 million due to ComEd and PECO financing trusts. (b) Includes $206 million due to ComEd financing trust. (c) Includes $184 million due to PECO financing trusts.

Fair Value of Financial Asset_2

Fair Value of Financial Assets and Liabilities (Tables)	12 Months Ended
	Dec. 31, 2024
Fair Value Disclosures [Abstract]
Fair Value of Financial Liabilities Recorded at Amortized Cost	The following tables present the carrying amounts and fair values of the Registrants’ short-term liabilities, long-term debt, and trust preferred securities (long-term debt to financing trusts or junior subordinated debentures) at December 31, 2024 and 2023. The Registrants have no financial liabilities classified as Level 1 or measured using the NAV practical expedient. The carrying amounts of the Registrants’ short-term liabilities as presented in their Consolidated Balance Sheets are representative of their fair value (Level 2) because of the short-term nature of these instruments. December 31, 2024 December 31, 2023 Carrying Amount Fair Value Carrying Amount Fair Value Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Long-Term Debt, including amounts due within one year (a) Exelon $ 44,400 $ — $ 35,337 $ 3,720 $ 39,057 $ 41,095 $ — $ 33,804 $ 3,442 $ 37,246 ComEd 12,030 — 10,260 — 10,260 11,486 — 10,210 — 10,210 PECO 5,704 — 4,816 — 4,816 5,134 — 4,562 — 4,562 BGE 5,395 — 4,702 — 4,702 4,602 — 4,145 — 4,145 PHI 9,124 — 4,093 3,720 7,813 8,648 — 4,160 3,442 7,602 Pepco 4,362 — 2,475 1,544 4,019 4,096 — 2,311 1,600 3,911 DPL 2,220 — 623 1,250 1,873 2,080 — 694 1,134 1,828 ACE 1,933 — 787 925 1,712 1,833 — 939 708 1,647 Long-Term Debt to Financing Trusts Exelon $ 390 $ — $ — $ 396 $ 396 $ 390 $ — $ — $ 390 $ 390 ComEd 206 — — 208 208 205 — — 208 208 PECO 184 — — 188 188 184 — — 182 182 __________ (a) Includes unamortized debt issuance costs, unamortized debt discount and premium, net, purchase accounting fair value adjustments, and finance lease liabilities which are not fair valued. Refer to Note 16 — Debt and Credit Agreements for unamortized debt issuance costs, unamortized debt discount and premium, net, and purchase accounting fair value adjustments and Note 10 — Leases for finance lease liabilities.
Assets and Liabilities Measured and Recorded at Fair Value on Recurring Basis	The following tables present assets and liabilities measured and recorded at fair value in the Registrants' Consolidated Balance Sheets on a recurring basis and their level within the fair value hierarchy at December 31, 2024 and 2023. Exelon and the Utility Registrants have immaterial and no financial assets or liabilities measured using the NAV practical expedient, respectively: Exelon At December 31, 2024 At December 31, 2023 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Assets Cash equivalents (a) $ 544 $ — $ — $ 544 $ 618 $ — $ — $ 618 Rabbi trust investments Cash equivalents 94 — — 94 67 — — 67 Mutual funds 65 — — 65 53 — — 53 Fixed income — 6 — 6 — 7 — 7 Life insurance contracts — 73 22 95 — 61 43 104 Rabbi trust investments subtotal 159 79 22 260 120 68 43 231 Interest rate derivative assets Derivatives designated as hedging instruments — 26 — 26 — 11 — 11 Economic hedges — — — — — 1 — 1 Interest rate derivative assets subtotal — 26 — 26 — 12 — 12 Total assets 703 105 22 830 738 80 43 861 Liabilities Commodity derivative liabilities — — (132) (132) — — (133) (133) Interest rate derivative liabilities Derivatives designated as hedging instruments — (1) — (1) — (24) — (24) Economic hedges — — — — — (22) — (22) Interest rate derivative liabilities subtotal — (1) — (1) — (46) — (46) Deferred compensation obligation — (74) — (74) — (75) — (75) Total liabilities — (75) (132) (207) — (121) (133) (254) Total net assets (liabilities) $ 703 $ 30 $ (110) $ 623 $ 738 $ (41) $ (90) $ 607 __________ (a) Excludes cash of $219 million and $334 million at December 31, 2024 and 2023, respectively, and restricted cash of $176 million and $149 million at December 31, 2024 and 2023, respectively, and includes long-term restricted cash of $41 million and $174 million at December 31, 2024 and 2023, respectively, which is reported in Other deferred debits in the Consolidated Balance Sheets. ComEd, PECO, and BGE ComEd PECO BGE At December 31, 2024 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Assets Cash equivalents (a) $ 390 $ — $ — $ 390 $ 29 $ — $ — $ 29 $ 1 $ — $ — $ 1 Rabbi trust investments Mutual funds — — — — 12 — — 12 10 — — 10 Life insurance contracts — — — — — 22 — 22 — — — — Rabbi trust investments subtotal — — — — 12 22 — 34 10 — — 10 Total assets 390 — — 390 41 22 — 63 11 — — 11 Liabilities Commodity derivative liabilities (b) — — (132) (132) — — — — — — — — Deferred compensation obligation — (8) — (8) — (7) — (7) — (4) — (4) Total liabilities — (8) (132) (140) — (7) — (7) — (4) — (4) Total net assets (liabilities) $ 390 $ (8) $ (132) $ 250 $ 41 $ 15 $ — $ 56 $ 11 $ (4) $ — $ 7 ComEd PECO BGE At December 31, 2023 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Assets Cash equivalents (a) $ 453 $ — $ — $ 453 $ 9 $ — $ — $ 9 $ — $ — $ — $ — Rabbi trust investments Mutual funds — — — — 9 — — 9 9 — — 9 Life insurance contracts — — — — — 18 — 18 — — — — Rabbi trust investments subtotal — — — — 9 18 — 27 9 — — 9 Total assets 453 — — 453 18 18 — 36 9 — — 9 Liabilities Commodity derivative liabilities (b) — — (133) (133) — — — — — — — — Deferred compensation obligation — (8) — (8) — (8) — (8) — (4) — (4) Total liabilities — (8) (133) (141) — (8) — (8) — (4) — (4) Total net assets (liabilities) $ 453 $ (8) $ (133) $ 312 $ 18 $ 10 $ — $ 28 $ 9 $ (4) $ — $ 5 __________ (a) ComEd excludes cash of $66 million and $86 million at December 31, 2024 and 2023, respectively, and restricted cash of $176 million and $147 million at December 31, 2024 and 2023, respectively, and includes long-term restricted cash of $41 million and $174 million at December 31, 2024 and 2023, respectively, which is reported in Other deferred debits in the Consolidated Balance Sheets. PECO excludes cash of $19 million and $42 million at December 31, 2024 and 2023, respectively. BGE excludes cash of $33 million and $47 million at December 31, 2024 and 2023, respectively, and restricted cash of zero and $1 million at December 31, 2024 and 2023, respectively. (b) The Level 3 balance consists of the current and noncurrent liability of $29 million and $103 million, respectively, at December 31, 2024, and $27 million and $106 million, respectively, at December 31, 2023 related to floating-to-fixed energy swap contracts with unaffiliated suppliers. PHI, Pepco, DPL, and ACE At December 31, 2024 At December 31, 2023 PHI Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Assets Cash equivalents (a) $ 93 $ — $ — $ 93 $ 107 $ — $ — $ 107 Rabbi trust investments Cash equivalents 92 — — 92 64 — — 64 Mutual funds 9 — — 9 9 — — 9 Fixed income — 6 — 6 — 7 — 7 Life insurance contracts — 23 21 44 — 21 41 62 Rabbi trust investments subtotal 101 29 21 151 73 28 41 142 Total assets 194 29 21 244 180 28 41 249 Liabilities Deferred compensation obligation — (12) — (12) — (13) — (13) Total liabilities — (12) — (12) — (13) — (13) Total net assets $ 194 $ 17 $ 21 $ 232 $ 180 $ 15 $ 41 $ 236 Pepco DPL ACE At December 31, 2024 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Assets Cash equivalents (a) $ 21 $ — $ — $ 21 $ 3 $ — $ — $ 3 $ — $ — $ — $ — Rabbi trust investments Cash equivalents 91 — — 91 — — — — — — — — Life insurance contracts — 23 21 44 — — — — — — — — Rabbi trust investments subtotal 91 23 21 135 — — — — — — — — Total assets 112 23 21 156 3 — — 3 — — — — Liabilities Deferred compensation obligation — (1) — (1) — — — — — — — — Total liabilities — (1) — (1) — — — — — — — — Total net assets $ 112 $ 22 $ 21 $ 155 $ 3 $ — $ — $ 3 $ — $ — $ — $ — Pepco DPL ACE At December 31, 2023 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Assets Cash equivalents (a) $ 23 $ — $ — $ 23 $ 1 $ — $ — $ 1 $ — $ — $ — $ — Rabbi trust investments Cash equivalents 63 — — 63 — — — — — — — — Life insurance contracts — 21 41 62 — — — — — — — — Rabbi trust investments subtotal 63 21 41 125 — — — — — — — — Total assets 86 21 41 148 1 — — 1 — — — — Liabilities Deferred compensation obligation — (1) — (1) — — — — — — — — Total liabilities — (1) — (1) — — — — — — — — Total net assets $ 86 $ 20 $ 41 $ 147 $ 1 $ — $ — $ 1 $ — $ — $ — $ — __________ (a) PHI excludes cash of $70 million and $96 million at December 31, 2024 and 2023, respectively, and restricted cash of zero and $1 million at December 31, 2024 and 2023, respectively. Pepco excludes cash of $30 million and $48 million at December 31, 2024 and 2023, respectively, and restricted cash of zero and $1 million at December 31, 2024 and 2023, respectively. DPL excludes cash of $20 million and $15 million at December 31, 2024 and 2023, respectively. ACE excludes cash of $14 million and $21 million at December 31, 2024 and 2023, respectively.
Fair Value Reconciliation of Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis	The following tables present the fair value reconciliation of Level 3 assets and liabilities measured at fair value on a recurring basis during the years ended December 31, 2024 and 2023: Exelon ComEd PHI and Pepco For the year ended December 31, 2024 Total Commodity Life Insurance Contracts Balance at December 31, 2023 $ (90) $ (133) $ 41 Total realized / unrealized gains (losses) Included in net income (a) 1 — 2 Included in regulatory assets/liabilities 1 1 (b) — Purchases, sales, and settlements Settlements (22) — (22) Balance at December 31, 2024 $ (110) $ (132) (c) $ 21 The amount of total gains included in income attributed to the change in unrealized gains (losses) related to assets and liabilities as of December 31, 2024 $ 1 $ — $ 2 Exelon ComEd PHI and Pepco For the year ended December 31, 2023 Total Commodity Life Insurance Contracts Balance at December 31, 2022 $ (44) $ (84) $ 40 Total realized / unrealized gains (losses) Included in net income (a) 3 — 1 Included in regulatory assets/liabilities (49) (49) (b) — Balance at December 31, 2023 $ (90) $ (133) (c) $ 41 The amount of total gains included in income attributed to the change in unrealized gains (losses) related to assets and liabilities as of December 31, 2023 $ 3 $ — $ 1 __________ (a) Classified in Operating and maintenance expense in the Consolidated Statements of Operations and Comprehensive Income. (b) Includes $40 million of decreases in fair value and an increase for realized gains due to settlements of $40 million recorded in Purchased power expense associated with floating-to-fixed energy swap contracts with unaffiliated suppliers for the year ended December 31, 2024. Includes $83 million of decreases in fair value and an increase for realized gains due to settlements of $34 million recorded in Purchased power expense associated with floating-to-fixed energy swap contracts with unaffiliated suppliers for the year ended December 31, 2023. (c) The balance of the current and noncurrent asset was effectively zero as of December 31, 2024. The balance consists of a current and noncurrent liability of $29 million and $103 million, respectively, as of December 31, 2024.
Fair Value Reconciliation of Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis, Valuation Technique	The following table discloses the significant unobservable inputs to the forward curve used to value mark-to-market derivatives: Type of trade Fair Value as of December 31, 2024 Fair Value as of December 31, 2023 Valuation Unobservable 2024 Range & Arithmetic Average 2023 Range & Arithmetic Average Commodity derivatives $ (132) $ (133) Discounted Cash Flow Forward power price (a) $ 30.31 - $ 59.88 $ 42.08 $ 30.27 - $ 73.71 $ 43.35 __________ (a) An increase to the forward power price would increase the fair value.

Commitments and Contingencies_2

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
PHI Merger Commitments	The following amounts represent total commitment costs that have been recorded since the acquisition date and the total remaining obligations for Exelon, PHI, Pepco, DPL, and ACE at December 31, 2024: Description Exelon PHI Pepco DPL ACE Total commitments $ 513 $ 320 $ 120 $ 89 $ 111 Remaining commitments (a) 27 24 23 1 — __________ (a) Remaining commitments extend through 2026 and include escrow funds, charitable contributions, and rate credits.
Commercial Commitments	The Registrants' commercial commitments at December 31, 2024, representing commitments potentially triggered by future events were as follows: Expiration within Exelon Total 2025 2026 2027 2028 2029 2030 and beyond Letters of credit (a) $ 55 $ 53 $ 2 $ — $ — $ — $ — Surety bonds (b) 274 194 — 2 78 — — Financing trust guarantees (c) 378 — — — 78 — 300 Guaranteed lease residual values (d) 26 — 5 4 6 4 7 Total commercial commitments $ 733 $ 247 $ 7 $ 6 $ 162 $ 4 $ 307 ComEd Letters of credit (a) $ 18 $ 16 $ 2 $ — $ — $ — $ — Surety bonds (b) 36 34 — 2 — — — Financing trust guarantees (c) 200 — — — — — 200 Total commercial commitments $ 254 $ 50 $ 2 $ 2 $ — $ — $ 200 PECO Letters of credit (a) $ 4 $ 4 $ — $ — $ — $ — $ — Surety bonds (b) 2 2 — — — — — Financing trust guarantees (c) 178 — — — 78 — 100 Total commercial commitments $ 184 $ 6 $ — $ — $ 78 $ — $ 100 BGE Letters of credit (a) $ 27 $ 27 $ — $ — $ — $ — $ — Surety bonds (b) 3 3 — — — — — Total commercial commitments $ 30 $ 30 $ — $ — $ — $ — $ — PHI Letters of credit (a) $ 3 $ 3 $ — $ — $ — $ — $ — Surety bonds (b) 174 96 — — 78 — — Guaranteed lease residual values (d) 26 — 5 4 6 4 7 Total commercial commitments $ 203 $ 99 $ 5 $ 4 $ 84 $ 4 $ 7 Pepco Letters of credit (a) $ 2 $ 2 $ — $ — $ — $ — $ — Surety bonds (b) 163 85 — — 78 — — Guaranteed lease residual values (d) 9 — 2 1 2 1 3 Total commercial commitments $ 174 $ 87 $ 2 $ 1 $ 80 $ 1 $ 3 DPL Letters of credit (a) $ 1 $ 1 $ — $ — $ — $ — $ — Surety bonds (b) 6 6 — — — — — Guaranteed lease residual values (d) 10 — 2 2 2 2 2 Total commercial commitments $ 17 $ 7 $ 2 $ 2 $ 2 $ 2 $ 2 ACE Surety bonds (b) $ 5 $ 5 $ — $ — $ — $ — $ — Guaranteed lease residual values (d) 7 — 1 1 2 1 2 Total commercial commitments $ 12 $ 5 $ 1 $ 1 $ 2 $ 1 $ 2 __________ (a) Exelon and certain of its subsidiaries maintain non-debt letters of credit to provide credit support for certain transactions as requested by third parties. (b) Surety bonds—Guarantees issued related to contract and commercial agreements, excluding bid bonds. Historically, payments under the guarantees have not been made and the likelihood of payments being required is remote. (c) Reflects guarantee of ComEd and PECO securities held by ComEd Financing III, PECO Trust III, and PECO Trust IV. (d) Represents the maximum potential obligation in the event the fair value of certain leased equipment and fleet vehicles is zero at the end of the maximum lease term. The lease term associated with these assets ranges from 1 to 8 years. The maximum potential obligation at the end of the minimum lease term would be $60 million guaranteed by Exelon and PHI, of which $20 million , $23 million, and $17 million is guaranteed by Pepco, DPL, and ACE, respectively. Historically, payments under the guarantees have not been made and PHI believes the likelihood of payments being required under the guarantees is remote.
Accrued environmental liabilities	At December 31, 2024 and 2023, the Registrants had accrued the following undiscounted amounts for environmental liabilities in Accrued expenses, Other current liabilities, and Other deferred credits and other liabilities in their respective Consolidated Balance Sheets: December 31, 2024 December 31, 2023 Total Environmental Portion of Total Related to Total Environmental Portion of Total Related to Exelon $ 403 $ 322 $ 428 $ 338 ComEd 285 284 303 302 PECO 29 28 27 25 BGE 13 10 14 11 PHI 75 — 81 — Pepco 73 — 79 — DPL 1 — 1 — ACE 1 — 1 —

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2024
Equity [Abstract]
Common Stock Warrants [Table Text Block]	The following table presents warrants outstanding to purchase ComEd common stock and shares of common stock reserved for the conversion of warrants. The warrants entitle the holders to convert such warrants into common stock of ComEd at a conversion rate of one share of common stock for three warrants. December 31, 2024 2023 Warrants outstanding 59,970 60,032 Common Stock reserved for conversion 19,990 20,011
Preferred Stock [Table Text Block]	The following table presents Exelon, ComEd, PECO, BGE, Pepco, and ACE's shares of preferred securities authorized, none of which were outstanding, as of December 31, 2024 and 2023. There are no shares of preferred securities authorized for DPL. Preferred Securities Authorized Exelon 100,000,000 ComEd 850,000 PECO 15,000,000 BGE 1,000,000 Pepco 6,000,000 ACE (a) 2,799,979 _________ (a) Includes 799,979 shares of cumulative preferred stock and 2,000,000 of no par value preferred stock as of December 31, 2024 and 2023.
Preference Securities [Table Text Block]	The following table presents ComEd, BGE, and ACE's preference securities authorized, none of which were outstanding as of December 31, 2024 and 2023. There are no shares of preference securities authorized for Exelon, PECO, Pepco, and DPL. Preference Securities Authorized ComEd 6,810,451 BGE (a) 6,500,000 ACE 3,000,000 __________ (a) Includes 4,600,000 shares of unclassified preference securities and 1,900,000 shares of previously redeemed preference securities as of December 31, 2024 and 2023.

Stock-Based Compensation Plan_2

Stock-Based Compensation Plans (Tables)	12 Months Ended
	Dec. 31, 2024
Share-Based Payment Arrangement [Abstract]
Share-based Payment Arrangement, Cost by Plan	The following table presents the stock-based compensation expense included in Exelon's Consolidated Statements of Operations and Comprehensive Income. The Utility Registrants' stock-based compensation expense for the years ended December 31, 2024, 2023, and 2022 was not material. Year Ended December 31, Exelon 2024 2023 2022 Total stock-based compensation expense included in Operating and maintenance expense $ 34 $ 21 $ 41 Income tax benefit (8) (5) (10) Total after-tax stock-based compensation expense $ 26 $ 16 $ 31
Stock Based Compensation Tax Benefit	The following table presents information regarding Exelon’s realized tax benefit when distributed: Year Ended December 31, 2024 2023 2022 Performance share awards $ 9 $ 8 $ 6 Restricted stock units 4 6 6
Schedule of Nonvested Performance-based Units Activity	The following table summarizes Exelon’s nonvested performance share awards activity: Shares Weighted Average Nonvested at December 31, 2023 (a) 958,242 $ 42.01 Granted 679,683 35.29 Change in performance (131,794) 40.38 Vested (311,971) 41.25 Forfeited (86,359) 37.80 Undistributed vested awards (b) (496,276) 37.34 Nonvested at December 31, 2024 (a) 611,525 $ 39.66 __________ (a) Excludes 635,526 and 1,198,093 of performance share awards issued to retirement-eligible employees as of December 31, 2024 and 2023, respectively, as they are fully vested. (b) Represents performance share awards that vested but were not distributed to retirement-eligible employees during 2024.
Schedule of Weighted Average Grant Date Fair Value	The following table summarizes the weighted average grant date fair value and the total fair value of performance share awards vested. Year Ended December 31, 2024 (a) 2023 2022 Weighted average grant date fair value (per share) $ 35.29 $ 41.82 $ 43.05 Total fair value of performance shares vested 27 17 29 Total fair value of performance shares settled in cash 27 26 25 __________ (a) As of December 31, 2024, $8 million of total unrecognized compensation costs related to nonvested performance shares are expected to be recognized over the remaining weighted-average period of 1.7 years.
Schedule of Nonvested Restricted Stock Units Activity	The following table summarizes Exelon’s nonvested restricted stock unit activity: Shares Weighted Average Nonvested at December 31, 2023 (a) 531,945 $ 42.87 Granted 361,745 35.54 Vested (309,500) 42.79 Forfeited (31,466) 40.07 Undistributed vested awards (b) (259,135) 37.16 Nonvested at December 31, 2024 (a) 293,589 $ 39.29 __________ (a) Excludes 126,732 and 205,855 of restricted stock units issued to retirement-eligible employees as of December 31, 2024 and 2023, respectively, as they are fully vested. (b) Represents restricted stock units that vested but were not distributed to retirement-eligible employees during 2024.
Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity	The following table summarizes the weighted average grant date fair value and the total fair value of restricted stock units vested. Year Ended December 31, 2024 (a) 2023 2022 Weighted average grant date fair value (per share) $ 35.54 $ 41.84 $ 42.97 Total fair value of restricted stock units vested 21 15 23 __________ (a)
Stock Options Exercised	The following table summarizes additional information regarding stock options exercised: Year Ended December 31, 2024 2023 2022 Intrinsic value (a) $ — $ — $ — Cash received for exercise price — — 1 __________ (a) The difference between the market value on the date of exercise and the option exercise price.

Changes in Accumulated Other _2

Changes in Accumulated Other Comprehensive Income (Tables)	12 Months Ended
	Dec. 31, 2024
AOCI Attributable to Parent [Abstract]
Schedule Of Changes In Accumulated Other Comprehensive Income (Loss)	The following table presents changes in Exelon's AOCI, net of tax, by component: Cash Flow Pension and (a) Foreign Total Balance at December 31, 2021 $ (6) $ (2,721) $ (23) $ (2,750) Separation of Constellation 6 1,994 23 2,023 OCI before reclassifications 2 46 — 48 Amounts reclassified from AOCI — 41 — 41 Net current-period OCI $ 2 $ 87 $ — $ 89 Balance at December 31, 2022 $ 2 $ (640) $ — $ (638) OCI before reclassifications (4) (109) — (113) Amounts reclassified from AOCI (1) 26 — 25 Net current-period OCI $ (5) $ (83) $ — $ (88) Balance at December 31, 2023 $ (3) $ (723) $ — $ (726) OCI before reclassifications 52 (70) — (18) Amounts reclassified from AOCI (4) 28 — 24 Net current-period OCI $ 48 $ (42) $ — $ 6 Balance at December 31, 2024 $ 45 $ (765) $ — $ (720) __________ (a)
Schedule of Income Taxes Allocated to Other Comprehensive Income (Loss) Components	The following table presents income tax benefit (expense) allocated to each component of Exelon's Other comprehensive income (loss): For the Years Ended December 31, 2024 2023 2022 Pension and non-pension postretirement benefit plans: Actuarial losses reclassified to periodic benefit cost $ (10) $ (8) $ (14) Pension and non-pension postretirement benefit plans valuation adjustments 23 33 (14) Unrealized gains on cash flow hedges (15) 2 —

Supplemental Financial Inform_2

Supplemental Financial Information (Tables)	12 Months Ended
	Dec. 31, 2024
Supplemental Financial Information [Abstract]
Taxes Other Than Income Taxes	The following tables provide additional information about material items recorded in the Registrants' Consolidated Statements of Operations and Comprehensive Income. Taxes other than income taxes Exelon ComEd PECO BGE PHI Pepco DPL ACE For the Year Ended December 31, 2024 Utility (a) $ 925 $ 300 $ 179 $ 105 $ 341 $ 310 $ 27 $ 4 Property 431 32 19 221 159 108 48 3 Payroll 134 37 17 19 28 6 4 3 For the Year Ended December 31, 2023 Utility (a) $ 875 $ 299 $ 166 $ 97 $ 313 $ 283 $ 26 $ 4 Property 401 33 16 205 147 101 44 2 Payroll 124 31 17 18 27 6 5 3 For the Year Ended December 31, 2022 Utility (a) $ 878 $ 306 $ 166 $ 94 $ 312 $ 283 $ 25 $ 4 Property 377 31 17 191 138 94 42 2 Payroll 117 28 16 17 25 6 4 3 __________ (a) The Registrants’ utility taxes represents municipal and state utility taxes and gross receipts taxes related to their operating revenues. The offsetting collection of utility taxes from customers is recorded in revenues in the Registrants’ Consolidated Statements of Operations and Comprehensive Income.
Schedule of Other Nonoperating Income, by Component	Other, net Exelon ComEd PECO BGE PHI Pepco DPL ACE For the Year Ended December 31, 2024 AFUDC—Equity $ 157 $ 46 $ 32 $ 25 $ 54 $ 40 $ 12 $ 2 Non-service net periodic benefit cost (38) — — — — — — — For the Year Ended December 31, 2023 AFUDC—Equity $ 151 $ 33 $ 31 $ 16 $ 71 $ 54 $ 10 $ 7 Non-service net periodic benefit cost (18) — — — — — — — For the Year Ended December 31, 2022 AFUDC—Equity $ 150 $ 35 $ 31 $ 21 $ 63 $ 48 $ 7 $ 8 Non-service net periodic benefit cost 63 — — — — — — —
Cash Flow Supplemental Disclosures	The following tables provide additional information about material items recorded in the Registrants' Consolidated Statements of Cash Flows. Depreciation, amortization, and accretion Exelon (a) ComEd PECO BGE PHI Pepco DPL ACE For the Year Ended December 31, 2024 Property, plant, and equipment (b) $ 2,910 $ 1,167 $ 414 $ 490 $ 782 $ 336 $ 218 $ 211 Amortization of regulatory assets (b) 676 347 14 148 164 70 27 67 Amortization of intangible assets, net (b) 8 — — — — — — — ARO accretion (e) 2 — — — 1 1 — — Total depreciation and amortization $ 3,596 $ 1,514 $ 428 $ 638 $ 947 $ 407 $ 245 $ 278 For the Year Ended December 31, 2023 Property, plant, and equipment (b) $ 2,778 $ 1,095 $ 383 $ 509 $ 737 $ 311 $ 208 $ 195 Amortization of regulatory assets (b) 720 308 14 145 253 130 36 88 Amortization of intangible assets, net (b) 8 — — — — — — — Total depreciation, amortization, and accretion $ 3,506 $ 1,403 $ 397 $ 654 $ 990 $ 441 $ 244 $ 283 For the Year Ended December 31, 2022 Property, plant, and equipment (b) $ 2,690 $ 1,031 $ 359 $ 476 $ 680 $ 288 $ 191 $ 173 Amortization of regulatory assets (b) 718 292 14 154 258 129 41 88 Amortization of intangible assets, net (b) 12 — — — — — — — Amortization of energy contract assets and liabilities (c) 3 — — — — — — — Nuclear fuel (d) 66 — — — — — — — ARO accretion (e) 44 — — — — — — — Total depreciation, amortization, and accretion $ 3,533 $ 1,323 $ 373 $ 630 $ 938 $ 417 $ 232 $ 261 __________ (a) Exelon's 2022 amounts include amounts related to Generation prior to the separation. See Note 2 — Discontinued Operations for additional information. (b) Included in Depreciation and amortization in the Registrants' Consolidated Statements of Operations and Comprehensive Income. (c) Included in Electric operating revenues or Purchased power expense in Exelon’s Consolidated Statements of Operations and Comprehensive Income. (d) Included in Purchased fuel expense in Exelon’s Consolidated Statements of Operations and Comprehensive Income. (e) Included in Operating and maintenance expense in Exelon's Consolidated Statements of Operations and Comprehensive Income. Cash paid (refunded) during the year Exelon (a) ComEd PECO BGE PHI Pepco DPL ACE For the Year Ended December 31, 2024 Interest (net of amount capitalized) $ 1,849 $ 485 $ 218 $ 198 $ 355 $ 183 $ 89 $ 74 Income taxes (net of refunds) 81 250 128 100 150 96 57 20 For the Year Ended December 31, 2023 Interest (net of amount capitalized) $ 1,616 $ 441 $ 200 $ 171 $ 301 $ 153 $ 69 $ 68 Income taxes (net of refunds) 10 11 (24) 29 21 6 6 9 For the Year Ended December 31, 2022 Interest (net of amount capitalized) $ 1,434 $ 396 $ 166 $ 147 $ 274 $ 141 $ 63 $ 60 Income taxes (net of refunds) 73 23 31 16 19 28 (2) (6) __________ (a) Exelon's 2022 amounts include amounts related to Generation prior to the separation. See Note 2 — Discontinued Operations for additional information. Other non-cash operating activities Exelon (a) ComEd PECO BGE PHI Pepco DPL ACE For the Year Ended December 31, 2024 Pension and OPEB costs (benefit) $ 252 $ 72 $ (1) $ 59 $ 93 $ 32 $ 15 $ 12 Allowance for credit losses 208 23 91 25 69 30 10 28 True-up adjustments to decoupling mechanisms and formula rates (b) 109 151 (6) (52) 16 (15) 10 21 Amortization of operating ROU asset 38 — — 6 26 6 6 3 Change in environmental liabilities — — — — — — — — AFUDC - Equity (157) (46) (32) (25) (54) (40) (12) (2) For the Year Ended December 31, 2023 Pension and OPEB costs (benefit) $ 198 $ 26 $ (14) $ 56 $ 99 $ 34 $ 18 $ 13 Allowance for credit losses 125 4 45 16 60 33 10 17 True-up adjustments to decoupling mechanisms and formula rates (b) (708) (556) 7 (84) (77) (22) (21) (34) Amortization of operating ROU asset 39 2 — 5 28 6 8 3 Change in environmental liabilities 37 — — — 37 37 — — AFUDC - Equity (151) (33) (31) (16) (71) (54) (10) (7) For the Year Ended December 31, 2022 Pension and OPEB costs (benefit) $ 164 $ 60 $ (9) $ 44 $ 53 $ 9 $ 3 $ 12 Allowance for credit losses 173 46 45 25 58 29 12 16 Other decommissioning-related activity 36 — — — — — — — Energy-related options 60 — — — — — — — True-up adjustments to decoupling mechanisms and formula rates (b) (168) (267) (2) 47 54 31 7 16 Long-term incentive plan 42 — — — — — — — Amortization of operating ROU Asset 56 2 — 14 27 7 8 3 AFUDC - Equity (150) (35) (31) (21) (63) (48) (7) (8) __________ (a) Exelon's 2022 amounts include amounts related to Generation prior to the separation. See Note 2 — Discontinued Operations for additional information. (b) For ComEd, reflects the true-up adjustments in Regulatory assets and liabilities associated with its distribution MRP and distribution, energy efficiency, distributed generation, and transmission formula rates. For PECO, reflects the change in Regulatory assets and liabilities associated with its transmission formula rate. For BGE, Pepco, DPL, and ACE, reflects the change in Regulatory assets and liabilities associated with their decoupling mechanisms and transmission formula rates. See Note 3 — Regulatory Matters for additional information. The following tables provide a reconciliation of cash, restricted cash, and cash equivalents reported within the Registrants' Consolidated Balance Sheets that sum to the total of the same amounts in their Consolidated Statements of Cash Flows. Cash, restricted cash, and cash equivalents Exelon ComEd PECO BGE PHI Pepco DPL ACE Balance at December 31, 2024 Cash and cash equivalents $ 357 $ 105 $ 48 $ 33 $ 139 $ 30 $ 21 $ 14 Restricted cash and cash equivalents 541 486 — 1 24 21 2 — Restricted cash included in Other deferred debits and other assets 41 41 — — — — — — Total cash, restricted cash, and cash equivalents $ 939 $ 632 $ 48 $ 34 $ 163 $ 51 $ 23 $ 14 Balance at December 31, 2023 Cash and cash equivalents $ 445 $ 110 $ 42 $ 47 $ 180 $ 48 $ 16 $ 21 Restricted cash and cash equivalents 482 402 9 1 24 24 — — Restricted cash included in Other deferred debits and other assets 174 174 — — — — — — Total cash, restricted cash, and cash equivalents $ 1,101 $ 686 $ 51 $ 48 $ 204 $ 72 $ 16 $ 21 Balance at December 31, 2022 Cash and cash equivalents $ 407 $ 67 $ 59 $ 43 $ 198 $ 45 $ 31 $ 72 Restricted cash and cash equivalents 566 327 9 24 175 54 121 — Restricted cash included in Other deferred debits and other assets 117 117 — — — — — — Total cash, restricted cash, and cash equivalents $ 1,090 $ 511 $ 68 $ 67 $ 373 $ 99 $ 152 $ 72 Balance at December 31, 2021 Cash and cash equivalents $ 672 $ 131 $ 36 $ 51 $ 136 $ 34 $ 28 $ 29 Restricted cash and cash equivalents 321 210 8 4 77 34 43 — Restricted cash included in Other deferred debits and other assets 44 43 — — — — — — Cash, restricted cash, and cash equivalents included in current assets of discontinued operations 582 — — — — — Total cash, restricted cash, and cash equivalents $ 1,619 $ 384 $ 44 $ 55 $ 213 $ 68 $ 71 $ 29 For additional information on restricted cash, see Note 1 — Significant Accounting Policies.
Supplemental Balance Sheet Disclosures	The following tables provide additional information about material items recorded in the Registrants' Consolidated Balance Sheets. Investments Exelon ComEd PECO BGE PHI Pepco Balance at December 31, 2024 Rabbi trust investments (a) $ 260 $ — $ 34 $ 10 $ 151 $ 135 Equity method investments 15 6 7 — 1 — Other investments 15 — — — — — Total investments $ 290 $ 6 $ 41 $ 10 $ 152 $ 135 Balance at December 31, 2023 Rabbi trust investments (a) $ 231 $ — $ 28 $ 9 $ 142 $ 124 Equity method investments $ 15 $ 6 $ 7 $ — $ 1 $ — Other investments 5 — — — — — Total investments $ 251 $ 6 $ 35 $ 9 $ 143 $ 124 __________ (a) The Registrants’ debt and equity security investments and life insurance contracts are recorded at fair market value. Accrued expenses Exelon ComEd PECO BGE PHI Pepco DPL ACE Balance at December 31, 2024 Compensation-related accruals (a) $ 679 $ 197 $ 87 $ 88 $ 132 $ 38 $ 26 $ 18 Taxes accrued 217 96 13 34 110 92 11 11 Interest accrued 468 150 60 50 83 44 16 18 Balance at December 31, 2023 Compensation-related accruals (a) $ 661 $ 206 $ 87 $ 81 $ 107 $ 27 $ 17 $ 12 Taxes accrued 221 204 96 75 137 116 30 10 Interest accrued 414 148 49 44 72 38 13 15 __________ (a) Primarily includes accrued payroll, bonuses and other incentives, vacation, and benefits.

Related Party Transactions (Tab

Related Party Transactions (Tables)	12 Months Ended
	Dec. 31, 2024
Related Party Transactions [Abstract]
Schedule of Related Party Transactions	The Utility Registrants incurred expenses from transactions with the Generation affiliate as described in the footnotes to the table below prior to separation on February 1, 2022. Such expenses were primarily recorded as Purchased power from affiliates and an immaterial amount recorded as Operating and maintenance expense from affiliates at the Utility Registrants: At December 31, 2022 ComEd (a) $ 59 PECO (b) 33 BGE (c) 18 PHI 51 Pepco (d) 39 DPL (e) 10 ACE (f) 2 _________ (a) ComEd had an ICC-approved RFP contract with Generation to provide a portion of ComEd’s electric supply requirements. ComEd also purchased RECs and ZECs from Generation. (b) PECO received electric supply from Generation under contracts executed through PECO’s competitive procurement process. In addition, PECO had a ten (c) BGE received a portion of its energy requirements from Generation under its MDPSC-approved market-based SOS and gas commodity programs. (d) Pepco received electric supply from Generation under contracts executed through Pepco's competitive procurement process approved by the MDPSC and DCPSC. (e) DPL received a portion of its energy requirements from Generation under its MDPSC and DEPSC approved market-based SOS commodity programs. (f) ACE received electric supply from Generation under contracts executed through ACE's competitive procurement process approved by the NJBPU.
Related Party Transactions - BSC and PHISCO Service Companies	The following table presents the service company costs allocated to the Registrants: Operating and maintenance from affiliates Capitalized costs For the years ended December 31, For the years ended December 31, 2024 2023 2022 2024 2023 2022 Exelon BSC $ 633 $ 670 $ 707 PHISCO 114 96 80 ComEd BSC $ 418 $ 353 $ 316 254 307 311 PECO BSC 243 213 197 112 120 115 BGE BSC 246 221 204 110 90 122 PHI BSC 200 177 188 157 153 159 PHISCO — — — 114 95 80 Pepco BSC 125 114 110 70 59 60 PHISCO 125 122 112 50 39 33 DPL BSC 78 73 71 49 43 45 PHISCO 103 98 96 34 29 26 ACE BSC 64 59 57 32 47 54 PHISCO 97 92 84 30 26 21
Related Party Transactions - Current Receivables From/Payables To Affiliates	The following tables present current Receivables from affiliates and current Payables to affiliates: December 31, 2024 Receivables from affiliates: Payables to affiliates: ComEd PECO BGE Pepco DPL ACE BSC PHISCO Other Total ComEd $ — $ — $ — $ — $ — $ 67 $ — $ 10 $ 77 PECO $ — — — — — 37 — 4 41 BGE — — — — — 47 — 1 48 PHI — — — — — — 7 1 10 18 Pepco — — — — 21 15 1 37 DPL — — — — — 14 11 1 26 ACE — — — — — 11 10 1 22 Other 4 — — 1 — 7 — — 12 Total $ 4 $ — $ — $ 1 $ — $ 7 $ 204 $ 37 $ 28 $ 281 December 31, 2023 Receivables from affiliates: Payables to affiliates: ComEd PECO BGE Pepco DPL ACE BSC PHISCO Other Total ComEd $ — $ — $ — $ — $ — $ 64 $ — $ 8 $ 72 PECO $ — — — — — 36 — 3 39 BGE — — — — — 33 — 2 35 PHI — — — — — — 5 — 10 15 Pepco — — — — — 17 14 1 32 DPL — 1 — — — 12 11 1 25 ACE — 1 — 1 1 11 11 — 25 Other 3 — — 1 — 3 1 — 8 Total $ 3 $ 2 $ — $ 2 $ 1 $ 3 $ 179 $ 36 $ 25 $ 251
Related Party Transactions - Long Term Debt to Financing Trusts	The following table presents Long-term debt to financing trusts: At December 31, 2024 2023 Exelon ComEd PECO Exelon ComEd PECO ComEd Financing III $ 206 $ 206 $ — $ 206 $ 205 $ — PECO Trust III 81 — 81 81 — 81 PECO Trust IV 103 — 103 103 — 103 Total $ 390 $ 206 $ 184 $ 390 $ 205 $ 184

Significant Accounting Polici_3

Significant Accounting Policies - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Significant Accounting Policies Additional Narrative Information [Line Items]
Retained earnings	$ 6,426	$ 5,490
Regulatory Liabilities	10,609	9,965
Deferred income taxes and unamortized investment tax credits	12,793	11,956
Net income	$ 2,460	2,328	$ 2,171
Minimum expectation of tax position to be realized	50%
Prior Period Adjustment [Abstract]
Prior Period Reclassification Adjustment		310
Corporate, Non-Segment
Significant Accounting Policies Additional Narrative Information [Line Items]
Retained earnings	$ 6,426	5,490
Net income	$ 2,460	$ 2,328	2,170
Commonwealth Edison Co | Corporate, Non-Segment
Significant Accounting Policies Additional Narrative Information [Line Items]
Percentage ownership of consolidated subsidiaries	99%	99%
Exelon significant subsidiaries | Corporate, Non-Segment
Significant Accounting Policies Additional Narrative Information [Line Items]
Percentage ownership of consolidated subsidiaries	100%	100%
Pepco Holdings LLC
Significant Accounting Policies Additional Narrative Information [Line Items]
Retained earnings	$ (240)	$ (275)
Regulatory Liabilities	863	975
Deferred income taxes and unamortized investment tax credits	3,190	3,031
Net income	$ 741	590	608
Prior Period Adjustment [Abstract]
Prior Period Reclassification Adjustment		$ 163
Pepco Holdings LLC | Potomac Electric Power Company
Significant Accounting Policies Additional Narrative Information [Line Items]
Percentage ownership of consolidated subsidiaries	100%	100%
Pepco Holdings LLC | Delmarva Power & Light Company
Significant Accounting Policies Additional Narrative Information [Line Items]
Percentage ownership of consolidated subsidiaries	100%	100%
Pepco Holdings LLC | Atlantic City Electric Company
Significant Accounting Policies Additional Narrative Information [Line Items]
Percentage ownership of consolidated subsidiaries	100%	100%
Atlantic City Electric Company
Significant Accounting Policies Additional Narrative Information [Line Items]
Retained earnings	$ 10	$ (18)
Regulatory Liabilities	156	146
Deferred income taxes and unamortized investment tax credits	816	771
Net income	155	120	148
Restricted Cash and Cash Equivalents	0	0
Baltimore Gas and Electric Company
Significant Accounting Policies Additional Narrative Information [Line Items]
Retained earnings	2,403	2,244
Regulatory Liabilities	648	800
Deferred income taxes and unamortized investment tax credits	2,099	1,945
Net income	527	485	380
Prior Period Adjustment [Abstract]
Prior Period Reclassification Adjustment		147
Delmarva Power & Light Company
Significant Accounting Policies Additional Narrative Information [Line Items]
Retained earnings	627	638
Regulatory Liabilities	367	415
Deferred income taxes and unamortized investment tax credits	946	904
Net income	209	177	169
Prior Period Adjustment [Abstract]
Prior Period Reclassification Adjustment		27
Potomac Electric Power Company
Significant Accounting Policies Additional Narrative Information [Line Items]
Retained earnings	1,100	1,069
Regulatory Liabilities	327	397
Deferred income taxes and unamortized investment tax credits	1,509	1,431
Net income	$ 390	306	$ 305
Prior Period Adjustment [Abstract]
Prior Period Reclassification Adjustment		$ 136

Discontinued Operations and Dis

Discontinued Operations and Disposal Groups - Narrative (Details) - USD ($) $ in Millions		11 Months Ended	12 Months Ended
	Jan. 31, 2022	Dec. 31, 2022	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Sep. 30, 2023	Feb. 01, 2022
Business Dispositions [Line Items]
Discontinued Operation, Intra-Entity Amounts, Discontinued Operation after Disposal, Expense		$ 266	$ 14	$ 151
Total assets			107,784	101,856
Total liabilities			80,863	76,101
Net income attributable to noncontrolling interests			0	0	$ 1
Income taxes			207	374	349
Net income from discontinued operations after income taxes			0	0	117
Operating and maintenance			4,940	4,559	4,673
Total other income and (deductions)			(1,652)	(1,321)	(912)
Other, net			262	408	535
Depreciation and amortization			3,594	3,506	3,325
Net income from discontinued operations			0	0	116
Total operating expenses			18,721	17,714	15,761
Taxes other than income taxes			1,504	1,408	1,390
Deferred Income Taxes and Tax Credits			128	319	255
Other non-cash operating activities			(592)	335	(370)
Gain (Loss) on Investments			0	0	(205)
Increase in DPP			0	0	348
Collection of DPP			0	0	169
Net fair value changes related to derivatives			0	(22)	53
Capital expenditures			7,097	7,408	7,147
Increase (decrease) in capital expenditures not paid			301	(215)	36
Gain on sale of assets			12	10	8
Net unrealized losses (gains) on equity investments			0	0	(16)
Depreciation, Amortization and Accretion, Net			3,596	3,506	3,533
Exelon Generation Co L L C
Business Dispositions [Line Items]
Proceeds from sale and collection of notes receivable					258
Exelon Generation Co L L C
Business Dispositions [Line Items]
Discontinued Operation, Intra-Entity Amounts, Discontinued Operation after Disposal, Expense		43	0	14
Total assets			0	0
Total liabilities			0	0
Net Assets							$ (11,573)
Net income attributable to noncontrolling interests			0	0	1
Operating revenues			0	0	1,855
Income taxes			0	0	(40)
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax			0	0	78
Equity in losses of unconsolidated affiliates			0	0	(1)
Net income from discontinued operations after income taxes			0	0	117
Operating and maintenance			0	0	371
Disposal Group, Including Discontinued Operation, Revenue			0	0	2,016
Gain (Loss) on Disposition of Assets			0	0	10
Total other income and (deductions)			0	0	(301)
Purchased power and/or fuel			0	0	1,138
Other, net			0	0	(281)
Depreciation and amortization			0	0	94
Disposal Group, Including Discontinued Operation, Interest Expense			0	0	20
Net income from discontinued operations			0	0	116
Total operating expenses			0	0	1,647
Disposal Group, Including Discontinued Operation, Operating Income (Loss)			0	0	379
Operating revenues from affiliates					161
Taxes other than income taxes			0	0	44
Increase (decrease) in PP&E related to ARO update			0	0	335
Deferred Income Taxes and Tax Credits			0	0	(143)
Other non-cash operating activities			0	0	36
Gain (Loss) on Investments			0	0	205
Increase in DPP			0	0	348
Collection of DPP			0	0	169
Net fair value changes related to derivatives			0	0	(59)
Capital expenditures			0	0	227
Increase (decrease) in capital expenditures not paid			0	0	(128)
Gain on sale of assets			0	0	9
Net unrealized losses (gains) on equity investments			0	0	16
Depreciation, Amortization and Accretion, Net			0	0	207
Exelon Generation Co L L C | Related Party
Business Dispositions [Line Items]
Operating revenues from affiliates			0	0
Corporate, Non-Segment
Business Dispositions [Line Items]
Common Stock, Shares, Issued							326,663,937
Separation Cash Payment	$ 1,750
Total assets			45,452	43,632
Total liabilities			18,531	17,877
Income taxes			(145)	(212)	(21)
Net income from discontinued operations after income taxes			0	0	116
Total other income and (deductions)			2,331	2,212	2,064
Other, net			22	19	22
Total operating expenses			$ 16	$ 96	31
Corporate, Non-Segment | ShortTermDebtSOFRplus075Jan2023
Business Dispositions [Line Items]
Short-term loans		1,150			1,150	$ 1,150
Corporate, Non-Segment | SMBCTermLoanJuly2023 | Notes Payable to Banks
Business Dispositions [Line Items]
Debt instrument, face amount		300			300
Corporate, Non-Segment | USBTermLoanJuly2023 | Notes Payable to Banks
Business Dispositions [Line Items]
Debt instrument, face amount		300			300
Corporate, Non-Segment | PNCTermLoanJuly2023 | Notes Payable to Banks
Business Dispositions [Line Items]
Debt instrument, face amount		$ 250			$ 250

Discontinued Operations Income

Discontinued Operations Income Statement - (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Business Dispositions [Line Items]
Operating and maintenance	$ 4,940	$ 4,559	$ 4,673
Depreciation and amortization	3,594	3,506	3,325
Taxes other than income taxes	1,504	1,408	1,390
Total operating expenses	18,721	17,714	15,761
Other, net	262	408	535
Total other income and (deductions)	(1,652)	(1,321)	(912)
Income taxes	207	374	349
Net income from discontinued operations after income taxes	0	0	117
Net income attributable to noncontrolling interests	0	0	1
Net income from discontinued operations	0	0	116
Total transaction and transition costs incurred related to the Separation			52
Exelon Generation Co L L C
Business Dispositions [Line Items]
Operating revenues	0	0	1,855
Operating revenues from affiliates			161
Disposal Group, Including Discontinued Operation, Revenue	0	0	2,016
Purchased power and/or fuel	0	0	1,138
Operating and maintenance	0	0	371
Depreciation and amortization	0	0	94
Taxes other than income taxes	0	0	44
Total operating expenses	0	0	1,647
Gain (Loss) on Disposition of Assets	0	0	10
Disposal Group, Including Discontinued Operation, Operating Income (Loss)	0	0	379
Disposal Group, Including Discontinued Operation, Interest Expense	0	0	(20)
Other, net	0	0	(281)
Total other income and (deductions)	0	0	(301)
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax	0	0	78
Income taxes	0	0	(40)
Equity in losses of unconsolidated affiliates	0	0	(1)
Net income from discontinued operations after income taxes	0	0	117
Net income attributable to noncontrolling interests	0	0	1
Net income from discontinued operations	$ 0	$ 0	$ 116

Discontinued Operations Cash Fl

Discontinued Operations Cash Flow - (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Business Dispositions [Line Items]
Depreciation, Amortization and Accretion, Net	$ 3,596	$ 3,506	$ 3,533
Gain on sale of assets	12	10	8
Deferred Income Taxes and Tax Credits	128	319	255
Net fair value changes related to derivatives	0	(22)	53
Gain (Loss) on Investments	0	0	(205)
Net unrealized losses (gains) on equity investments	0	0	(16)
Other non-cash operating activities	(592)	335	(370)
Payments to Acquire Property, Plant, and Equipment	(7,097)	(7,408)	(7,147)
Collection of DPP	0	0	169
Increase (decrease) in capital expenditures not paid	301	(215)	36
Increase in DPP	0	0	348
Exelon Generation Co L L C
Business Dispositions [Line Items]
Depreciation, Amortization and Accretion, Net	0	0	207
Gain on sale of assets	0	0	9
Deferred Income Taxes and Tax Credits	0	0	(143)
Net fair value changes related to derivatives	0	0	(59)
Gain (Loss) on Investments	0	0	205
Net unrealized losses (gains) on equity investments	0	0	16
Other non-cash operating activities	0	0	36
Payments to Acquire Property, Plant, and Equipment	0	0	(227)
Collection of DPP	0	0	169
Increase (decrease) in capital expenditures not paid	0	0	(128)
Increase in DPP	0	0	348
Increase (decrease) in PP&E related to ARO update	$ 0	$ 0	$ 335

Regulatory Matters- Narrative (

Regulatory Matters- Narrative (Details) $ in Millions						12 Months Ended		48 Months Ended			72 Months Ended
	Dec. 19, 2024 USD ($)	Jun. 15, 2023 USD ($)	Jan. 17, 2023 USD ($)	Sep. 27, 2022	Feb. 03, 2022	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2027 USD ($)	Jun. 30, 2027 USD ($)	Dec. 31, 2024 USD ($)	Jul. 10, 2023 USD ($)	Mar. 31, 2022 USD ($)
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						$ 10,650	$ 10,913			$ 10,650
Regulatory Liabilities						10,609	9,965			10,609
Renewable portfolio standards costs
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Liabilities						1,369	1,102			1,369
Multi-year plan reconciliation
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Liabilities						9	23			9
Carbon Mitigation Credit Rider
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						179	673			179
COVID-19 Regulatory Asset
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						59	41			59
DC PLUG charge
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						1	3			1
Deferred storm costs
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						125	114			125
Difference between Carrying Value and Fair Value [Member]
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						95	101			95
Under-recovered revenue decoupling
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						188	176			188
Multi-year plan reconciliation
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						$ 170	112			170
Commonwealth Edison Co
Regulatory Matters Additional Narrative Information [Line Items]
Basis points for ComEd's Electric Distribution rates					580
Maximum increase of revenue requirement						105%
Basis Points - ComEd Symmetrical Performance Adjustments				32
Regulatory Assets						$ 3,721	4,129			3,721
Regulatory Liabilities						8,618	7,684			8,618
Commonwealth Edison Co | Illinois 2023 Electric Distribution Base Rate Case
Regulatory Matters Additional Narrative Information [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount			$ 1,487
Public Utilities, Approved Rate Increase (Decrease), Amount	$ 1,045
Public Utilities, Interim Rate Increase (Decrease), Amount	$ 501
Public Utilities, Approved Return on Equity, Percentage	8.905%
Commonwealth Edison Co | 2024 | Illinois 2023 Electric Distribution Base Rate Case
Regulatory Matters Additional Narrative Information [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount	$ 752
Commonwealth Edison Co | 2025 | Illinois 2023 Electric Distribution Base Rate Case
Regulatory Matters Additional Narrative Information [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount	80
Commonwealth Edison Co | 2026 | Illinois 2023 Electric Distribution Base Rate Case
Regulatory Matters Additional Narrative Information [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount	102
Commonwealth Edison Co | 2027 | Illinois 2023 Electric Distribution Base Rate Case
Regulatory Matters Additional Narrative Information [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount	$ 111
Commonwealth Edison Co | Renewable portfolio standards costs
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Liabilities						1,369	1,102			1,369
Commonwealth Edison Co | Renewable portfolio standards costs | Illinois Commerce Commission
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Liabilities						1,296				1,296
Commonwealth Edison Co | Renewable portfolio standards costs | Illinois Power Agency
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Liabilities						73				73
Commonwealth Edison Co | Multi-year plan reconciliation
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Liabilities						0	0			0
Commonwealth Edison Co | ComEd FERC Audit Settlement Regulatory Liability
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Liabilities						70				70
Commonwealth Edison Co | Carbon Mitigation Credit Rider
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						179	673			179
Commonwealth Edison Co | COVID-19 Regulatory Asset
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						3	11			3
Commonwealth Edison Co | DC PLUG charge
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						0	0			0
Commonwealth Edison Co | Deferred storm costs
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						0	0			0
Commonwealth Edison Co | Under-recovered revenue decoupling
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						0	0			0
Commonwealth Edison Co | Multi-year plan reconciliation
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						81	0			81
Commonwealth Edison Co | Forecast | Illinois 2023 Electric Distribution Base Rate Case
Regulatory Matters Additional Narrative Information [Line Items]
Public Utilities, Approved Debt Capital Structure, Percentage								50%
Public Utilities, Approved Debt Capital Structure, Percentage								50%
Commonwealth Edison Co | Forecast | 2023 | Illinois 2023 Electric Distribution Base Rate Case
Regulatory Matters Additional Narrative Information [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount								$ 986
PECO Energy Co
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						1,068	920			1,068
Regulatory Liabilities						375	406			375
PECO Energy Co | Renewable portfolio standards costs
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Liabilities						0	0			0
PECO Energy Co | Multi-year plan reconciliation
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Liabilities						0	0			0
PECO Energy Co | Carbon Mitigation Credit Rider
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						0	0			0
PECO Energy Co | COVID-19 Regulatory Asset
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						0	11			0
PECO Energy Co | DC PLUG charge
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						0	0			0
PECO Energy Co | Deferred storm costs
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						23	0			23
PECO Energy Co | Under-recovered revenue decoupling
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						0	0			0
PECO Energy Co | Multi-year plan reconciliation
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						0	0			0
Baltimore Gas and Electric Company
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						995	956			995
Regulatory Liabilities						648	800			648
Baltimore Gas and Electric Company | Renewable portfolio standards costs
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Liabilities						0	0			0
Baltimore Gas and Electric Company | Multi-year plan reconciliation
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Liabilities						0	0			0
Baltimore Gas and Electric Company | Carbon Mitigation Credit Rider
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						0	0			0
Baltimore Gas and Electric Company | COVID-19 Regulatory Asset
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						4	6			4
Baltimore Gas and Electric Company | DC PLUG charge
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						0	0			0
Baltimore Gas and Electric Company | Deferred storm costs
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						73	84			73
Baltimore Gas and Electric Company | Deferred storm costs | MARYLAND
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						27				27
Baltimore Gas and Electric Company | Deferred storm costs | 2028 | MARYLAND
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						46				46
Baltimore Gas and Electric Company | Under-recovered revenue decoupling
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						98	64			98
Baltimore Gas and Electric Company | Multi-year plan reconciliation
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						66	112			66
Baltimore Gas and Electric Company | Multi-year plan reconciliation | MARYLAND PUBLIC SERVICE COMMISSION [Domain]
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						53				53
Pepco Holdings LLC
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						1,893	1,924			1,893
Regulatory Liabilities						863	975			863
Pepco Holdings LLC | Renewable portfolio standards costs
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Liabilities						0	0			0
Pepco Holdings LLC | Multi-year plan reconciliation
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Liabilities						9	23			9
Pepco Holdings LLC | Carbon Mitigation Credit Rider
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						0	0			0
Pepco Holdings LLC | COVID-19 Regulatory Asset
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						52	13			52
Pepco Holdings LLC | DC PLUG charge
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						1	3			1
Pepco Holdings LLC | Deferred storm costs
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						29	30			29
Pepco Holdings LLC | Difference between Carrying Value and Fair Value [Member]
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						362	385			362
Pepco Holdings LLC | Under-recovered revenue decoupling
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						90	112			90
Pepco Holdings LLC | Multi-year plan reconciliation
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						23	0			23
Potomac Electric Power Company
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						603	600			603
Regulatory Liabilities						327	397			327
Approved Capital Expenditure											$ 500
Potomac Electric Power Company | Renewable portfolio standards costs
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Liabilities						0	0			0
Potomac Electric Power Company | Multi-year plan reconciliation
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Liabilities						0	16			0
Potomac Electric Power Company | Carbon Mitigation Credit Rider
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						0	0			0
Potomac Electric Power Company | COVID-19 Regulatory Asset
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						49	10			49
Potomac Electric Power Company | COVID-19 Regulatory Asset | 2029 | MARYLAND
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						7				7
Potomac Electric Power Company | COVID-19 Regulatory Asset | 2039 | DISTRICT OF COLUMBIA
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						42				42
Potomac Electric Power Company | DC PLUG charge
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						1	3			1
Approved Capital Expenditure											250
Potomac Electric Power Company | DC PLUG charge | DISTRICT OF COLUMBIA
Regulatory Matters Additional Narrative Information [Line Items]
Approved Capital Expenditure											$ 250
Potomac Electric Power Company | Deferred storm costs
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						8	9			8
Potomac Electric Power Company | Under-recovered revenue decoupling
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						60	100			60
Potomac Electric Power Company | Under-recovered revenue decoupling | 2025 | MARYLAND
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						8				8
Potomac Electric Power Company | Under-recovered revenue decoupling | 2028 | DISTRICT OF COLUMBIA
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						52				52
Potomac Electric Power Company | Multi-year plan reconciliation
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						23	0			23
Potomac Electric Power Company | Multi-year plan reconciliation | MARYLAND PUBLIC SERVICE COMMISSION [Domain]
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						18				18
Potomac Electric Power Company | Multi-year plan reconciliation | 2026 | MARYLAND PUBLIC SERVICE COMMISSION [Domain]
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						5				5
Delmarva Power & Light Company
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						275	272			275
Regulatory Liabilities						367	415			367
Delmarva Power & Light Company | Renewable portfolio standards costs
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Liabilities						0	0			0
Delmarva Power & Light Company | Multi-year plan reconciliation
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Liabilities						9	7			9
Delmarva Power & Light Company | Multi-year plan reconciliation | MARYLAND
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Liabilities						4				4
Delmarva Power & Light Company | Carbon Mitigation Credit Rider
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						0	0			0
Delmarva Power & Light Company | COVID-19 Regulatory Asset
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						3	3			3
Delmarva Power & Light Company | COVID-19 Regulatory Asset | 2027 | MARYLAND
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						1				1
Delmarva Power & Light Company | COVID-19 Regulatory Asset | 2028 | DELAWARE
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						2				2
Delmarva Power & Light Company | DC PLUG charge
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						0	0			0
Delmarva Power & Light Company | Deferred storm costs
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						1	2			1
Delmarva Power & Light Company | Under-recovered revenue decoupling
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						0	0			0
Delmarva Power & Light Company | Multi-year plan reconciliation
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						0	0			0
Atlantic City Electric Company
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						603	608			603
Regulatory Liabilities						156	146			156
Contract Termination Liability												$ 203
Gain (Loss) on Contract Termination						49	88
Approved Capital Expenditure										220
Public Utilities, Approved Rate Increase (Decrease), Amount		$ 93
Atlantic City Electric Company | Renewable portfolio standards costs
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Liabilities						0	0			0
Atlantic City Electric Company | Multi-year plan reconciliation
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Liabilities						0	0			0
Atlantic City Electric Company | Carbon Mitigation Credit Rider
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						0	0			0
Atlantic City Electric Company | COVID-19 Regulatory Asset
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						0	0			0
Atlantic City Electric Company | DC PLUG charge
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						0	0			0
Atlantic City Electric Company | Deferred storm costs
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						20	19			20
Atlantic City Electric Company | Deferred storm costs | NEW JERSEY
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						15				15
Atlantic City Electric Company | Deferred storm costs | 2026 | NEW JERSEY
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						4				4
Atlantic City Electric Company | Under-recovered revenue decoupling
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						30	12			30
Atlantic City Electric Company | Multi-year plan reconciliation
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						$ 0	$ 0			$ 0
Atlantic City Electric Company | Forecast
Regulatory Matters Additional Narrative Information [Line Items]
Approved Capital Expenditure IIP 2.0									$ 379

Regulatory Matters - Schedule o

Regulatory Matters - Schedule of Completed Rate Cases (Details) - USD ($) $ in Millions

12 Months Ended

48 Months Ended

Dec. 19, 2024

Dec. 12, 2024

Nov. 26, 2024

Oct. 31, 2024

Sep. 11, 2024

Jun. 10, 2024

Apr. 18, 2024

Apr. 01, 2024

Mar. 28, 2024

Feb. 27, 2024

Feb. 23, 2024

Dec. 14, 2023

Nov. 17, 2023

Sep. 29, 2023

Aug. 21, 2023

Jun. 15, 2023

Feb. 17, 2023

Jan. 17, 2023

Dec. 14, 2022

May 19, 2022

Feb. 23, 2022

Jun. 28, 2021

Mar. 31, 2021

Dec. 31, 2024

Dec. 31, 2027

Commonwealth Edison Co | Illinois 2023 Electric Distribution Base Rate Case

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Requested Rate Increase (Decrease), Amount

$ 1,487

Public Utilities, Approved Rate Increase (Decrease), Amount

$ 1,045

Public Utilities, Approved Return on Equity, Percentage

8.905%

Commonwealth Edison Co | Illinois 2023 Electric Distribution Base Rate Case | Forecast

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Approved Debt Capital Structure, Percentage

50%

Commonwealth Edison Co | Illinois 2023 Electric Distribution Base Rate Case | 2023 | Forecast

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Approved Rate Increase (Decrease), Amount

$ 986

Commonwealth Edison Co | Illinois 2023 Electric Distribution Base Rate Case | 2024

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Approved Rate Increase (Decrease), Amount

$ 752

Commonwealth Edison Co | Illinois 2023 Electric Distribution Base Rate Case | 2025

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Approved Rate Increase (Decrease), Amount

80

Commonwealth Edison Co | Illinois 2023 Electric Distribution Base Rate Case | 2026

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Approved Rate Increase (Decrease), Amount

102

Commonwealth Edison Co | Illinois 2023 Electric Distribution Base Rate Case | 2027

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Approved Rate Increase (Decrease), Amount

$ 111

Commonwealth Edison Co | Illinois 2024 Electric Distribution Reconciliation Rate Case

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities Requested Rate Increase (Decrease), Prior Year Annual Reconciliation

$ 624

Public Utilities, Approved Rate Increase (Decrease), Amount

$ 623

Public Utilities, Approved Return on Equity, Percentage

9.89%

Public Utilities, Approved Equity Capital Structure, Percentage

7.02%

Commonwealth Edison Co | Illinois 2024 Electric Distribution Reconciliation Rate Case | 2024

Regulatory Matters Completed Rate Cases [Line Items]

Basis points for ComEd's Revenue Requirement

580

PECO Energy Co | Pennsylvania 2024 Electric Distribution Base Rate Case

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Requested Rate Increase (Decrease), Amount

$ 464

Public Utilities, Approved Rate Increase (Decrease), Amount

$ 354

PECO Energy Co | Pennsylvania 2024 Electric Distribution Base Rate Case | Maximum

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities Approved Rate Increase (Decrease), Prior Year Annual Reconciliation

23

PECO Energy Co | Pennsylvania 2024 Electric Distribution Base Rate Case | 2025

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Approved Rate Increase (Decrease), Amount

64

PECO Energy Co | Pennsylvania 2024 Natural Gas Distribution Base Rate Case

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Requested Rate Increase (Decrease), Amount

$ 111

Public Utilities, Approved Rate Increase (Decrease), Amount

$ 78

Baltimore Gas and Electric Company | Maryland 2023 Electric Distribution Base Rate Case

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Requested Rate Increase (Decrease), Amount

$ 313

Public Utilities, Approved Rate Increase (Decrease), Amount

$ 179

Public Utilities, Approved Return on Equity, Percentage

9.50%

Baltimore Gas and Electric Company | Maryland 2023 Electric Distribution Base Rate Case | 2024

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Approved Rate Increase (Decrease), Amount

$ 41

Baltimore Gas and Electric Company | Maryland 2023 Electric Distribution Base Rate Case | 2025

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Approved Rate Increase (Decrease), Amount

113

Baltimore Gas and Electric Company | Maryland 2023 Electric Distribution Base Rate Case | 2026

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Approved Rate Increase (Decrease), Amount

25

Baltimore Gas and Electric Company | Maryland 2023 Gas Distribution Base Rate Case

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Requested Rate Increase (Decrease), Amount

$ 289

Public Utilities, Approved Rate Increase (Decrease), Amount

$ 229

Public Utilities, Approved Return on Equity, Percentage

9.45%

Baltimore Gas and Electric Company | Maryland 2023 Gas Distribution Base Rate Case | 2024

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Approved Rate Increase (Decrease), Amount

$ 126

Baltimore Gas and Electric Company | Maryland 2023 Gas Distribution Base Rate Case | 2025

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Approved Rate Increase (Decrease), Amount

62

Baltimore Gas and Electric Company | Maryland 2023 Gas Distribution Base Rate Case | 2026

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Approved Rate Increase (Decrease), Amount

$ 41

Baltimore Gas and Electric Company | Maryland 2023 Electric Distribution Reconciliation Rate Case [Member] | 2021

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Approved Rate Increase (Decrease), Amount

$ 13

Baltimore Gas and Electric Company | Maryland 2023 Electric Distribution Reconciliation Rate Case [Member] | 2022

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Approved Rate Increase (Decrease), Amount

39

Baltimore Gas and Electric Company | Maryland 2023 Electric Distribution Reconciliation Rate Case [Member] | 2023

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Approved Rate Increase (Decrease), Amount

$ 79

Baltimore Gas and Electric Company | Maryland 2023 Gas Distribution Reconciliation Rate Case [Member] | 2021

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Approved Rate Increase (Decrease), Amount

7

Baltimore Gas and Electric Company | Maryland 2023 Gas Distribution Reconciliation Rate Case [Member] | 2022

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Approved Rate Increase (Decrease), Amount

$ 15

Baltimore Gas and Electric Company | Maryland 2023 Gas Distribution Reconciliation Rate Case [Member] | 2023

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Approved Rate Increase (Decrease), Amount

$ 73

Potomac Electric Power Company | District of Columbia 2023 Electric Distribution Base Rate Case

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Requested Rate Increase (Decrease), Amended, Amount

$ 186

Public Utilities, Approved Rate Increase (Decrease), Amount

$ 123

Public Utilities, Approved Return on Equity, Percentage

9.50%

Potomac Electric Power Company | District of Columbia 2023 Electric Distribution Base Rate Case | 2025

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Approved Rate Increase (Decrease), Amount

$ 99

Potomac Electric Power Company | District of Columbia 2023 Electric Distribution Base Rate Case | 2026

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Approved Rate Increase (Decrease), Amount

$ 24

Potomac Electric Power Company | Maryland 2020 Electric Distribution Base Rate Case [Member]

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Requested Rate Increase (Decrease), Amended, Amount

$ 104

Public Utilities, Approved Rate Increase (Decrease), Amount

$ 52

Public Utilities, Approved Return on Equity, Percentage

9.55%

Potomac Electric Power Company | Maryland 2020 Electric Distribution Base Rate Case [Member] | 2022

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Approved Rate Increase (Decrease), Amount

$ 21

Potomac Electric Power Company | Maryland 2020 Electric Distribution Base Rate Case [Member] | 2023

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Approved Rate Increase (Decrease), Amount

16

Potomac Electric Power Company | Maryland 2020 Electric Distribution Base Rate Case [Member] | 2023 | Offsets

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Approved Rate Increase (Decrease), Percentage

25%

Potomac Electric Power Company | Maryland 2020 Electric Distribution Base Rate Case [Member] | 2024

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Approved Rate Increase (Decrease), Amount

$ 15

Potomac Electric Power Company | Pepco Maryland 2023 Electric Distribution Base Rate Case

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Requested Rate Increase (Decrease), Amended, Amount

$ 111

Public Utilities, Approved Rate Increase (Decrease), Amount

$ 45

Public Utilities, Approved Return on Equity, Percentage

9.50%

Potomac Electric Power Company | Pepco Maryland 2023 Electric Distribution Base Rate Case | 2024

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Approved Rate Increase (Decrease), Amount

$ 45

Potomac Electric Power Company | Pepco Maryland 2023 Electric Distribution Base Rate Case | 2025

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Requested Rate Increase (Decrease), Amended, Amount

80

Potomac Electric Power Company | Pepco Maryland 2023 Electric Distribution Base Rate Case | 2026

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Requested Rate Increase (Decrease), Amended, Amount

51

Potomac Electric Power Company | Pepco Maryland 2023 Electric Distribution Base Rate Case | 2027

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Requested Rate Increase (Decrease), Amended, Amount

14

Potomac Electric Power Company | Pepco Maryland 2023 Electric Distribution Reconciliation Rate Case | 2022

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Approved Rate Increase (Decrease), Amount

1

Potomac Electric Power Company | Pepco Maryland 2023 Electric Distribution Reconciliation Rate Case | 2023

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Approved Rate Increase (Decrease), Amount

7

Potomac Electric Power Company | Pepco Maryland 2023 Electric Distribution Reconciliation Rate Case | 2024

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Approved Rate Increase (Decrease), Amount

$ 31

Delmarva Power & Light Company | Maryland 2022 Electric Distribution Base Rate Case

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Requested Rate Increase (Decrease), Amount

$ 38

Public Utilities, Approved Rate Increase (Decrease), Amount

$ 29

Public Utilities, Approved Return on Equity, Percentage

9.60%

Delmarva Power & Light Company | Maryland 2022 Electric Distribution Base Rate Case | 2023

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Approved Rate Increase (Decrease), Amount

$ 17

Delmarva Power & Light Company | Maryland 2022 Electric Distribution Base Rate Case | 2024

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Approved Rate Increase (Decrease), Amount

6

Delmarva Power & Light Company | Maryland 2022 Electric Distribution Base Rate Case | 2025

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Approved Rate Increase (Decrease), Amount

$ 6

Delmarva Power & Light Company | Delaware 2022 Electric Distribution Base Rate Case

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Requested Rate Increase (Decrease), Amended, Amount

$ 39

Public Utilities, Approved Rate Increase (Decrease), Amount

$ 28

Public Utilities, Approved Return on Equity, Percentage

9.60%

Delmarva Power & Light Company | Delaware 2022 Electric Distribution Base Rate Case | Minimum

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Requested Rate Increase (Decrease) Annual Reconciliation

$ 5

Delmarva Power & Light Company | Delaware 2022 Electric Distribution Base Rate Case | Maximum

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Requested Rate Increase (Decrease) Annual Reconciliation

$ 15

Atlantic City Electric Company

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Approved Rate Increase (Decrease), Amount

$ 93

Atlantic City Electric Company | New Jersey 2023 Electric Distribution Base Rate Case

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Requested Rate Increase (Decrease), Amended, Amount

$ 92

Public Utilities, Approved Rate Increase (Decrease), Amount

$ 45

Public Utilities, Approved Return on Equity, Percentage

9.60%

Atlantic City Electric Company | New Jersey 2023 Electric Distribution Base Rate Case | 2023

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Approved Rate Increase (Decrease), Amount

$ 36

Atlantic City Electric Company | New Jersey 2023 Electric Distribution Base Rate Case | 2024

Regulatory Matters Completed Rate Cases [Line Items]

Public Utilities, Approved Rate Increase (Decrease), Amount

$ 9

Regulatory Matters - Schedule_2

Regulatory Matters - Schedule of Pending Rate Cases (Details) - USD ($) $ in Millions	Nov. 21, 2024	Sep. 20, 2024
Delmarva Power & Light Company | DPL DE 2024 Natural Gas Distribution Base Rate Case
Regulatory Matters Pending Rate Cases [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount		$ 36
Public Utilities, Requested Return on Equity, Percentage		10.65%
Atlantic City Electric Company | New Jersey 2024 Electric Distribution Base Rate Case
Regulatory Matters Pending Rate Cases [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount	$ 109
Public Utilities, Requested Return on Equity, Percentage	10.70%

Regulatory Matters - Annual Ele

Regulatory Matters - Annual Electric Transmission Filings (Details) $ in Millions	May 30, 2024 USD ($)	May 10, 2024 USD ($)	Apr. 24, 2024 USD ($)	May 12, 2023
Commonwealth Edison Co | 2024 Transmission Formula Rate Annual Update
Public Utilities, General Disclosures [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount			$ 32
Annual Reconciliation Increase (Decrease)			(12)
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount			$ 20
Public Utilities, Approved Equity Capital Structure, Percentage			8.14%
Public Utilities, Approved Return on Equity, Percentage			11.50%
Basis points for Transmission Formula Rate			50
PECO Energy Co | 2024 Transmission Formula Rate Annual Update
Public Utilities, General Disclosures [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount	$ 2
Annual Reconciliation Increase (Decrease)	3
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount	$ 5
Public Utilities, Approved Equity Capital Structure, Percentage	7.45%
Public Utilities, Approved Return on Equity, Percentage	10.35%
Cap on Equity Component of Rate of Return on Common Equity in Federal Energy Regulatory Committee Complaint	55.75%
Basis points for Transmission Formula Rate	50
Baltimore Gas and Electric Company | 2024 Transmission Formula Rate Annual Update
Public Utilities, General Disclosures [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount			$ 42
Annual Reconciliation Increase (Decrease)			13
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount			$ 53
Public Utilities, Approved Equity Capital Structure, Percentage			7.47%
Public Utilities, Approved Return on Equity, Percentage			10.50%
Basis points for Transmission Formula Rate			50
Baltimore Gas and Electric Company | 2024 Transmission Formula Rate Revenue Reduction
Public Utilities, General Disclosures [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount			$ 2
Potomac Electric Power Company | 2024 Transmission Formula Rate Annual Update
Public Utilities, General Disclosures [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount		$ 58
Annual Reconciliation Increase (Decrease)		15
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount		$ 73
Public Utilities, Approved Equity Capital Structure, Percentage		7.62%
Public Utilities, Approved Return on Equity, Percentage		10.50%
Basis points for Transmission Formula Rate				50
Delmarva Power & Light Company | 2024 Transmission Formula Rate Annual Update
Public Utilities, General Disclosures [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount		$ 7
Annual Reconciliation Increase (Decrease)		17
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount		$ 24
Public Utilities, Approved Equity Capital Structure, Percentage		7.23%
Public Utilities, Approved Return on Equity, Percentage		10.50%
Basis points for Transmission Formula Rate				50
Atlantic City Electric Company | 2024 Transmission Formula Rate Annual Update
Public Utilities, General Disclosures [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount		$ 14
Annual Reconciliation Increase (Decrease)		18
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount		$ 32
Public Utilities, Approved Equity Capital Structure, Percentage		7.11%
Public Utilities, Approved Return on Equity, Percentage		10.50%
Basis points for Transmission Formula Rate				50

Regulatory Matters - Energy Eff

Regulatory Matters - Energy Efficiency Formula Rate (Details) - Commonwealth Edison Co - USD ($) $ in Millions	Dec. 05, 2024	May 30, 2024
ComEd 2023 Energy Efficiency Formula Rate [Member] | 2023
Schedule of Energy Efficiency Formula Rate Updates [Line Items]
Public Utilities, Approved Return on Equity, Percentage	10.34%
Public Utilities, Approved Equity Capital Structure, Percentage	7.24%
ComEd 2024 Energy Efficiency Formula Rate
Schedule of Energy Efficiency Formula Rate Updates [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount		$ 58
Public Utilities, Approved Rate Increase (Decrease), Amount	$ 58
Public Utilities, Approved Return on Equity, Percentage	9.89%
Public Utilities, Approved Equity Capital Structure, Percentage	7.02%
Basis points for ComEd's Revenue Requirement	580
ComEd 2024 Energy Efficiency Formula Rate | 2025
Schedule of Energy Efficiency Formula Rate Updates [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount	$ 66
ComEd 2024 Energy Efficiency Formula Rate | 2023
Schedule of Energy Efficiency Formula Rate Updates [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount	$ (8)

Regulatory Matters - Schedule_3

Regulatory Matters - Schedule of Regulatory Assets (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Regulatory Assets [Line Items]
Regulatory Assets	$ 10,650	$ 10,913
Current regulatory assets	1,940	2,215
Noncurrent regulatory assets	8,710	8,698
Advanced Metering Infrastructure Deployment Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	82	109
Advanced Metering Infrastructure Legacy Meter Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	90	127
Asset retirement obligations
Regulatory Assets [Line Items]
Regulatory Assets	173	159
Carbon Mitigation Credit Rider
Regulatory Assets [Line Items]
Regulatory Assets	179	673
COVID-19 Regulatory Asset
Regulatory Assets [Line Items]
Regulatory Assets	59	41
DC PLUG charge
Regulatory Assets [Line Items]
Regulatory Assets	1	3
Deferred income taxes
Regulatory Assets [Line Items]
Regulatory Assets	937	759
Deferred storm costs
Regulatory Assets [Line Items]
Regulatory Assets	125	114
Electric Distribution Formula Rate Annual Reconciliations [Member]
Regulatory Assets [Line Items]
Regulatory Assets	554	787
Electric Distribution Formula Rate One-time Events [Member]
Regulatory Assets [Line Items]
Regulatory Assets	98	89
Electric energy and natural gas costs
Regulatory Assets [Line Items]
Regulatory Assets	108	98
Energy efficiency and demand response programs
Regulatory Assets [Line Items]
Regulatory Assets	652	631
Energy Efficiency Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	1,890	1,691
Fair value of long-term debt
Regulatory Assets [Line Items]
Regulatory Assets	457	486
Fair value of PHI's unamortized energy contracts
Regulatory Assets [Line Items]
Regulatory Assets	26	35
MGP remediation costs
Regulatory Assets [Line Items]
Regulatory Assets	307	315
Multi-year plan reconciliation
Regulatory Assets [Line Items]
Regulatory Assets	170	112
Pension and Other Postretirement Plans Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	2,382	2,254
Pension and Post Retirement Plan Merger Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	503	637
Removal costs
Regulatory Assets [Line Items]
Regulatory Assets	869	827
Renewable Energy Program [Member]
Regulatory Assets [Line Items]
Regulatory Assets	131	134
Transmission formula rate annual reconciliations [Member]
Regulatory Assets [Line Items]
Regulatory Assets	94	75
Under-Recovered Credit Loss Expense
Regulatory Assets [Line Items]
Regulatory Assets	147	112
Under-recovered revenue decoupling
Regulatory Assets [Line Items]
Regulatory Assets	188	176
Universal service fund charge under-recovery
Regulatory Assets [Line Items]
Regulatory Assets	19	59
ZEC regulatory asset
Regulatory Assets [Line Items]
Regulatory Assets	4	58
Other
Regulatory Assets [Line Items]
Regulatory Assets	405	352
Commonwealth Edison Co
Regulatory Assets [Line Items]
Regulatory Assets	3,721	4,129
Current regulatory assets	1,159	1,335
Noncurrent regulatory assets	2,562	2,794
Commonwealth Edison Co | Advanced Metering Infrastructure Deployment Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Commonwealth Edison Co | Advanced Metering Infrastructure Legacy Meter Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	13	28
Commonwealth Edison Co | Asset retirement obligations
Regulatory Assets [Line Items]
Regulatory Assets	112	104
Commonwealth Edison Co | Carbon Mitigation Credit Rider
Regulatory Assets [Line Items]
Regulatory Assets	179	673
Commonwealth Edison Co | COVID-19 Regulatory Asset
Regulatory Assets [Line Items]
Regulatory Assets	3	11
Commonwealth Edison Co | DC PLUG charge
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Commonwealth Edison Co | Deferred income taxes
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Commonwealth Edison Co | Deferred storm costs
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Commonwealth Edison Co | Electric Distribution Formula Rate Annual Reconciliations [Member]
Regulatory Assets [Line Items]
Regulatory Assets	554	787
Commonwealth Edison Co | Electric Distribution Formula Rate One-time Events [Member]
Regulatory Assets [Line Items]
Regulatory Assets	98	89
Commonwealth Edison Co | Electric energy and natural gas costs
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Commonwealth Edison Co | Energy efficiency and demand response programs
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Commonwealth Edison Co | Energy Efficiency Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	1,890	1,691
Commonwealth Edison Co | Fair value of long-term debt
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Commonwealth Edison Co | Fair value of PHI's unamortized energy contracts
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Commonwealth Edison Co | MGP remediation costs
Regulatory Assets [Line Items]
Regulatory Assets	275	286
Commonwealth Edison Co | Multi-year plan reconciliation
Regulatory Assets [Line Items]
Regulatory Assets	81	0
Commonwealth Edison Co | Pension and Other Postretirement Plans Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Commonwealth Edison Co | Pension and Post Retirement Plan Merger Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Commonwealth Edison Co | Removal costs
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Commonwealth Edison Co | Renewable Energy Program [Member]
Regulatory Assets [Line Items]
Regulatory Assets	131	134
Commonwealth Edison Co | Transmission formula rate annual reconciliations [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Commonwealth Edison Co | Under-Recovered Credit Loss Expense
Regulatory Assets [Line Items]
Regulatory Assets	126	78
Commonwealth Edison Co | Under-recovered revenue decoupling
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Commonwealth Edison Co | Universal service fund charge under-recovery
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Commonwealth Edison Co | ZEC regulatory asset
Regulatory Assets [Line Items]
Regulatory Assets	4	58
Commonwealth Edison Co | Other
Regulatory Assets [Line Items]
Regulatory Assets	255	190
PECO Energy Co
Regulatory Assets [Line Items]
Regulatory Assets	1,068	920
Current regulatory assets	65	127
Noncurrent regulatory assets	1,003	793
PECO Energy Co | Advanced Metering Infrastructure Deployment Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
PECO Energy Co | Advanced Metering Infrastructure Legacy Meter Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
PECO Energy Co | Asset retirement obligations
Regulatory Assets [Line Items]
Regulatory Assets	23	22
PECO Energy Co | Carbon Mitigation Credit Rider
Regulatory Assets [Line Items]
Regulatory Assets	0	0
PECO Energy Co | COVID-19 Regulatory Asset
Regulatory Assets [Line Items]
Regulatory Assets	0	11
PECO Energy Co | DC PLUG charge
Regulatory Assets [Line Items]
Regulatory Assets	0	0
PECO Energy Co | Deferred income taxes
Regulatory Assets [Line Items]
Regulatory Assets	925	748
PECO Energy Co | Deferred storm costs
Regulatory Assets [Line Items]
Regulatory Assets	23	0
PECO Energy Co | Electric Distribution Formula Rate Annual Reconciliations [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
PECO Energy Co | Electric Distribution Formula Rate One-time Events [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
PECO Energy Co | Electric energy and natural gas costs
Regulatory Assets [Line Items]
Regulatory Assets	0	1
PECO Energy Co | Energy efficiency and demand response programs
Regulatory Assets [Line Items]
Regulatory Assets	10	23
PECO Energy Co | Energy Efficiency Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
PECO Energy Co | Fair value of long-term debt
Regulatory Assets [Line Items]
Regulatory Assets	0	0
PECO Energy Co | Fair value of PHI's unamortized energy contracts
Regulatory Assets [Line Items]
Regulatory Assets	0	0
PECO Energy Co | MGP remediation costs
Regulatory Assets [Line Items]
Regulatory Assets	18	15
PECO Energy Co | Multi-year plan reconciliation
Regulatory Assets [Line Items]
Regulatory Assets	0	0
PECO Energy Co | Pension and Other Postretirement Plans Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
PECO Energy Co | Pension and Post Retirement Plan Merger Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
PECO Energy Co | Removal costs
Regulatory Assets [Line Items]
Regulatory Assets	0	0
PECO Energy Co | Renewable Energy Program [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
PECO Energy Co | Transmission formula rate annual reconciliations [Member]
Regulatory Assets [Line Items]
Regulatory Assets	15	9
PECO Energy Co | Under-Recovered Credit Loss Expense
Regulatory Assets [Line Items]
Regulatory Assets	0	0
PECO Energy Co | Under-recovered revenue decoupling
Regulatory Assets [Line Items]
Regulatory Assets	0	0
PECO Energy Co | Universal service fund charge under-recovery
Regulatory Assets [Line Items]
Regulatory Assets	19	59
PECO Energy Co | ZEC regulatory asset
Regulatory Assets [Line Items]
Regulatory Assets	0	0
PECO Energy Co | Other
Regulatory Assets [Line Items]
Regulatory Assets	35	32
Baltimore Gas and Electric Company
Regulatory Assets [Line Items]
Regulatory Assets	995	956
Current regulatory assets	207	229
Noncurrent regulatory assets	788	727
Baltimore Gas and Electric Company | Advanced Metering Infrastructure Deployment Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	29	49
Baltimore Gas and Electric Company | Advanced Metering Infrastructure Legacy Meter Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	4	12
Baltimore Gas and Electric Company | Asset retirement obligations
Regulatory Assets [Line Items]
Regulatory Assets	26	23
Baltimore Gas and Electric Company | Carbon Mitigation Credit Rider
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Baltimore Gas and Electric Company | COVID-19 Regulatory Asset
Regulatory Assets [Line Items]
Regulatory Assets	4	6
Baltimore Gas and Electric Company | DC PLUG charge
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Baltimore Gas and Electric Company | Deferred income taxes
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Baltimore Gas and Electric Company | Deferred storm costs
Regulatory Assets [Line Items]
Regulatory Assets	73	84
Baltimore Gas and Electric Company | Deferred storm costs | MARYLAND
Regulatory Assets [Line Items]
Regulatory Assets	27
Baltimore Gas and Electric Company | Deferred storm costs | 2028 | MARYLAND
Regulatory Assets [Line Items]
Regulatory Assets	46
Baltimore Gas and Electric Company | Electric Distribution Formula Rate Annual Reconciliations [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Baltimore Gas and Electric Company | Electric Distribution Formula Rate One-time Events [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Baltimore Gas and Electric Company | Electric energy and natural gas costs
Regulatory Assets [Line Items]
Regulatory Assets	38	25
Baltimore Gas and Electric Company | Energy efficiency and demand response programs
Regulatory Assets [Line Items]
Regulatory Assets	329	316
Baltimore Gas and Electric Company | Energy Efficiency Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Baltimore Gas and Electric Company | Fair value of long-term debt
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Baltimore Gas and Electric Company | Fair value of PHI's unamortized energy contracts
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Baltimore Gas and Electric Company | MGP remediation costs
Regulatory Assets [Line Items]
Regulatory Assets	14	14
Baltimore Gas and Electric Company | Multi-year plan reconciliation
Regulatory Assets [Line Items]
Regulatory Assets	66	112
Baltimore Gas and Electric Company | Multi-year plan reconciliation | MARYLAND PUBLIC SERVICE COMMISSION [Domain]
Regulatory Assets [Line Items]
Regulatory Assets	53
Baltimore Gas and Electric Company | Multi-year plan reconciliation | 2022 | MARYLAND PUBLIC SERVICE COMMISSION [Domain]
Regulatory Assets [Line Items]
Regulatory Assets		13
Baltimore Gas and Electric Company | Pension and Other Postretirement Plans Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Baltimore Gas and Electric Company | Pension and Post Retirement Plan Merger Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Baltimore Gas and Electric Company | Removal costs
Regulatory Assets [Line Items]
Regulatory Assets	261	219
Baltimore Gas and Electric Company | Renewable Energy Program [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Baltimore Gas and Electric Company | Transmission formula rate annual reconciliations [Member]
Regulatory Assets [Line Items]
Regulatory Assets	30	5
Baltimore Gas and Electric Company | Under-Recovered Credit Loss Expense
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Baltimore Gas and Electric Company | Under-recovered revenue decoupling
Regulatory Assets [Line Items]
Regulatory Assets	98	64
Baltimore Gas and Electric Company | Universal service fund charge under-recovery
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Baltimore Gas and Electric Company | ZEC regulatory asset
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Baltimore Gas and Electric Company | Other
Regulatory Assets [Line Items]
Regulatory Assets	23	27
Pepco Holdings LLC
Regulatory Assets [Line Items]
Regulatory Assets	1,893	1,924
Current regulatory assets	323	337
Noncurrent regulatory assets	1,570	1,587
Pepco Holdings LLC | Advanced Metering Infrastructure Deployment Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	53	60
Pepco Holdings LLC | Advanced Metering Infrastructure Legacy Meter Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	73	87
Pepco Holdings LLC | Asset retirement obligations
Regulatory Assets [Line Items]
Regulatory Assets	12	10
Pepco Holdings LLC | Carbon Mitigation Credit Rider
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Pepco Holdings LLC | COVID-19 Regulatory Asset
Regulatory Assets [Line Items]
Regulatory Assets	52	13
Pepco Holdings LLC | DC PLUG charge
Regulatory Assets [Line Items]
Regulatory Assets	1	3
Pepco Holdings LLC | Deferred income taxes
Regulatory Assets [Line Items]
Regulatory Assets	12	11
Pepco Holdings LLC | Deferred storm costs
Regulatory Assets [Line Items]
Regulatory Assets	29	30
Pepco Holdings LLC | Electric Distribution Formula Rate Annual Reconciliations [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Pepco Holdings LLC | Electric Distribution Formula Rate One-time Events [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Pepco Holdings LLC | Electric energy and natural gas costs
Regulatory Assets [Line Items]
Regulatory Assets	70	72
Pepco Holdings LLC | Energy efficiency and demand response programs
Regulatory Assets [Line Items]
Regulatory Assets	313	292
Pepco Holdings LLC | Energy Efficiency Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Pepco Holdings LLC | Fair value of long-term debt
Regulatory Assets [Line Items]
Regulatory Assets	362	385
Pepco Holdings LLC | Fair value of PHI's unamortized energy contracts
Regulatory Assets [Line Items]
Regulatory Assets	26	35
Pepco Holdings LLC | MGP remediation costs
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Pepco Holdings LLC | Multi-year plan reconciliation
Regulatory Assets [Line Items]
Regulatory Assets	23	0
Pepco Holdings LLC | Pension and Other Postretirement Plans Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Pepco Holdings LLC | Pension and Post Retirement Plan Merger Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Pepco Holdings LLC | Removal costs
Regulatory Assets [Line Items]
Regulatory Assets	608	608
Pepco Holdings LLC | Renewable Energy Program [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Pepco Holdings LLC | Transmission formula rate annual reconciliations [Member]
Regulatory Assets [Line Items]
Regulatory Assets	49	61
Pepco Holdings LLC | Under-Recovered Credit Loss Expense
Regulatory Assets [Line Items]
Regulatory Assets	21	34
Pepco Holdings LLC | Under-recovered revenue decoupling
Regulatory Assets [Line Items]
Regulatory Assets	90	112
Pepco Holdings LLC | Universal service fund charge under-recovery
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Pepco Holdings LLC | ZEC regulatory asset
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Pepco Holdings LLC | Other
Regulatory Assets [Line Items]
Regulatory Assets	99	111
Potomac Electric Power Company
Regulatory Assets [Line Items]
Regulatory Assets	603	600
Current regulatory assets	157	150
Noncurrent regulatory assets	446	450
Potomac Electric Power Company | Advanced Metering Infrastructure Deployment Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	11	18
Potomac Electric Power Company | Advanced Metering Infrastructure Legacy Meter Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	30	41
Potomac Electric Power Company | Asset retirement obligations
Regulatory Assets [Line Items]
Regulatory Assets	8	6
Potomac Electric Power Company | Carbon Mitigation Credit Rider
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Potomac Electric Power Company | COVID-19 Regulatory Asset
Regulatory Assets [Line Items]
Regulatory Assets	49	10
Potomac Electric Power Company | DC PLUG charge
Regulatory Assets [Line Items]
Regulatory Assets	1	3
Potomac Electric Power Company | Deferred income taxes
Regulatory Assets [Line Items]
Regulatory Assets	12	11
Potomac Electric Power Company | Deferred storm costs
Regulatory Assets [Line Items]
Regulatory Assets	8	9
Potomac Electric Power Company | Electric Distribution Formula Rate Annual Reconciliations [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Potomac Electric Power Company | Electric Distribution Formula Rate One-time Events [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Potomac Electric Power Company | Electric energy and natural gas costs
Regulatory Assets [Line Items]
Regulatory Assets	18	11
Potomac Electric Power Company | Energy efficiency and demand response programs
Regulatory Assets [Line Items]
Regulatory Assets	174	187
Potomac Electric Power Company | Energy Efficiency Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Potomac Electric Power Company | Fair value of long-term debt
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Potomac Electric Power Company | Fair value of PHI's unamortized energy contracts
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Potomac Electric Power Company | MGP remediation costs
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Potomac Electric Power Company | Multi-year plan reconciliation
Regulatory Assets [Line Items]
Regulatory Assets	23	0
Potomac Electric Power Company | Multi-year plan reconciliation | MARYLAND PUBLIC SERVICE COMMISSION [Domain]
Regulatory Assets [Line Items]
Regulatory Assets	18
Potomac Electric Power Company | Multi-year plan reconciliation | 2026 | MARYLAND PUBLIC SERVICE COMMISSION [Domain]
Regulatory Assets [Line Items]
Regulatory Assets	5
Potomac Electric Power Company | Pension and Other Postretirement Plans Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Potomac Electric Power Company | Pension and Post Retirement Plan Merger Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Potomac Electric Power Company | Removal costs
Regulatory Assets [Line Items]
Regulatory Assets	127	137
Potomac Electric Power Company | Renewable Energy Program [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Potomac Electric Power Company | Transmission formula rate annual reconciliations [Member]
Regulatory Assets [Line Items]
Regulatory Assets	37	15
Potomac Electric Power Company | Under-Recovered Credit Loss Expense
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Potomac Electric Power Company | Under-recovered revenue decoupling
Regulatory Assets [Line Items]
Regulatory Assets	60	100
Potomac Electric Power Company | Under-recovered revenue decoupling | 2025 | MARYLAND
Regulatory Assets [Line Items]
Regulatory Assets	8
Potomac Electric Power Company | Under-recovered revenue decoupling | 2028 | DISTRICT OF COLUMBIA
Regulatory Assets [Line Items]
Regulatory Assets	52
Potomac Electric Power Company | Universal service fund charge under-recovery
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Potomac Electric Power Company | ZEC regulatory asset
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Potomac Electric Power Company | Other
Regulatory Assets [Line Items]
Regulatory Assets	45	52
Delmarva Power & Light Company
Regulatory Assets [Line Items]
Regulatory Assets	275	272
Current regulatory assets	60	54
Noncurrent regulatory assets	215	218
Delmarva Power & Light Company | Advanced Metering Infrastructure Deployment Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	13	17
Delmarva Power & Light Company | Advanced Metering Infrastructure Legacy Meter Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	10	14
Delmarva Power & Light Company | Asset retirement obligations
Regulatory Assets [Line Items]
Regulatory Assets	3	2
Delmarva Power & Light Company | Carbon Mitigation Credit Rider
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Delmarva Power & Light Company | COVID-19 Regulatory Asset
Regulatory Assets [Line Items]
Regulatory Assets	3	3
Delmarva Power & Light Company | COVID-19 Regulatory Asset | 2027 | MARYLAND
Regulatory Assets [Line Items]
Regulatory Assets	1
Delmarva Power & Light Company | DC PLUG charge
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Delmarva Power & Light Company | Deferred income taxes
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Delmarva Power & Light Company | Deferred storm costs
Regulatory Assets [Line Items]
Regulatory Assets	1	2
Delmarva Power & Light Company | Electric Distribution Formula Rate Annual Reconciliations [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Delmarva Power & Light Company | Electric Distribution Formula Rate One-time Events [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Delmarva Power & Light Company | Electric energy and natural gas costs
Regulatory Assets [Line Items]
Regulatory Assets	20	2
Delmarva Power & Light Company | Energy efficiency and demand response programs
Regulatory Assets [Line Items]
Regulatory Assets	72	73
Delmarva Power & Light Company | Energy Efficiency Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Delmarva Power & Light Company | Fair value of long-term debt
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Delmarva Power & Light Company | Fair value of PHI's unamortized energy contracts
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Delmarva Power & Light Company | MGP remediation costs
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Delmarva Power & Light Company | Multi-year plan reconciliation
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Delmarva Power & Light Company | Pension and Other Postretirement Plans Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Delmarva Power & Light Company | Pension and Post Retirement Plan Merger Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Delmarva Power & Light Company | Removal costs
Regulatory Assets [Line Items]
Regulatory Assets	127	118
Delmarva Power & Light Company | Renewable Energy Program [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Delmarva Power & Light Company | Transmission formula rate annual reconciliations [Member]
Regulatory Assets [Line Items]
Regulatory Assets	12	22
Delmarva Power & Light Company | Under-Recovered Credit Loss Expense
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Delmarva Power & Light Company | Under-recovered revenue decoupling
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Delmarva Power & Light Company | Universal service fund charge under-recovery
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Delmarva Power & Light Company | ZEC regulatory asset
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Delmarva Power & Light Company | Other
Regulatory Assets [Line Items]
Regulatory Assets	14	19
Atlantic City Electric Company
Regulatory Assets [Line Items]
Regulatory Assets	603	608
Current regulatory assets	101	125
Noncurrent regulatory assets	502	483
Atlantic City Electric Company | Advanced Metering Infrastructure Deployment Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	29	25
Atlantic City Electric Company | Advanced Metering Infrastructure Legacy Meter Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	33	32
Atlantic City Electric Company | Asset retirement obligations
Regulatory Assets [Line Items]
Regulatory Assets	1	2
Atlantic City Electric Company | Carbon Mitigation Credit Rider
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Atlantic City Electric Company | COVID-19 Regulatory Asset
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Atlantic City Electric Company | DC PLUG charge
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Atlantic City Electric Company | Deferred income taxes
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Atlantic City Electric Company | Deferred storm costs
Regulatory Assets [Line Items]
Regulatory Assets	20	19
Atlantic City Electric Company | Electric Distribution Formula Rate Annual Reconciliations [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Atlantic City Electric Company | Electric Distribution Formula Rate One-time Events [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Atlantic City Electric Company | Electric energy and natural gas costs
Regulatory Assets [Line Items]
Regulatory Assets	32	59
Atlantic City Electric Company | Energy efficiency and demand response programs
Regulatory Assets [Line Items]
Regulatory Assets	67	32
Atlantic City Electric Company | Energy Efficiency Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Atlantic City Electric Company | Fair value of long-term debt
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Atlantic City Electric Company | Fair value of PHI's unamortized energy contracts
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Atlantic City Electric Company | MGP remediation costs
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Atlantic City Electric Company | Multi-year plan reconciliation
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Atlantic City Electric Company | Pension and Other Postretirement Plans Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Atlantic City Electric Company | Pension and Post Retirement Plan Merger Costs [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Atlantic City Electric Company | Removal costs
Regulatory Assets [Line Items]
Regulatory Assets	356	354
Atlantic City Electric Company | Renewable Energy Program [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Atlantic City Electric Company | Transmission formula rate annual reconciliations [Member]
Regulatory Assets [Line Items]
Regulatory Assets	0	24
Atlantic City Electric Company | Under-Recovered Credit Loss Expense
Regulatory Assets [Line Items]
Regulatory Assets	21	34
Atlantic City Electric Company | Under-recovered revenue decoupling
Regulatory Assets [Line Items]
Regulatory Assets	30	12
Atlantic City Electric Company | Universal service fund charge under-recovery
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Atlantic City Electric Company | ZEC regulatory asset
Regulatory Assets [Line Items]
Regulatory Assets	0	0
Atlantic City Electric Company | Other
Regulatory Assets [Line Items]
Regulatory Assets	$ 14	$ 15

Regulatory Matters - Schedule_4

Regulatory Matters - Schedule of Regulatory Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Regulatory Liabilities [Line Items]
Regulatory Liabilities	$ 10,609	$ 9,965
Regulatory liabilities	411	389
Noncurrent regulatory liabilities	10,198	9,576
Decommissioning the Regulatory Agreement Units
Regulatory Liabilities [Line Items]
Regulatory Liabilities	4,027	3,232
Dedicated facilities charge
Regulatory Liabilities [Line Items]
Regulatory Liabilities	143	129
Deferred income taxes
Regulatory Liabilities [Line Items]
Regulatory Liabilities	2,756	3,284
Over Recovered Energy and Natural Gas Costs [Member]
Regulatory Liabilities [Line Items]
Regulatory Liabilities	108	121
Energy efficiency and demand response programs RL
Regulatory Liabilities [Line Items]
Regulatory Liabilities	1	1
Fiber Refund
Regulatory Liabilities [Line Items]
Regulatory Liabilities	16	15
Multi-year plan reconciliation
Regulatory Liabilities [Line Items]
Regulatory Liabilities	9	23
Over-recovered revenue decoupling
Regulatory Liabilities [Line Items]
Regulatory Liabilities	2	2
Removal costs
Regulatory Liabilities [Line Items]
Regulatory Liabilities	1,958	1,845
Renewable portfolio standards costs
Regulatory Liabilities [Line Items]
Regulatory Liabilities	1,369	1,102
Transmission formula rate annual reconciliations [Member]
Regulatory Liabilities [Line Items]
Regulatory Liabilities	14
Other
Regulatory Liabilities [Line Items]
Regulatory Liabilities	206	211
Commonwealth Edison Co
Regulatory Liabilities [Line Items]
Regulatory Liabilities	8,618	7,684
Regulatory liabilities	197	191
Noncurrent regulatory liabilities	8,421	7,493
Commonwealth Edison Co | Decommissioning the Regulatory Agreement Units
Regulatory Liabilities [Line Items]
Regulatory Liabilities	3,780	2,954
Commonwealth Edison Co | Dedicated facilities charge
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Commonwealth Edison Co | Deferred income taxes
Regulatory Liabilities [Line Items]
Regulatory Liabilities	1,607	1,900
Commonwealth Edison Co | Over Recovered Energy and Natural Gas Costs [Member]
Regulatory Liabilities [Line Items]
Regulatory Liabilities	12	4
Commonwealth Edison Co | Energy efficiency and demand response programs RL
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Commonwealth Edison Co | Fiber Refund
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Commonwealth Edison Co | Multi-year plan reconciliation
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Commonwealth Edison Co | Over-recovered revenue decoupling
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Commonwealth Edison Co | Removal costs
Regulatory Liabilities [Line Items]
Regulatory Liabilities	1,841	1,701
Commonwealth Edison Co | Renewable portfolio standards costs
Regulatory Liabilities [Line Items]
Regulatory Liabilities	1,369	1,102
Commonwealth Edison Co | Transmission formula rate annual reconciliations [Member]
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0
Commonwealth Edison Co | Other
Regulatory Liabilities [Line Items]
Regulatory Liabilities	9	23
PECO Energy Co
Regulatory Liabilities [Line Items]
Regulatory Liabilities	375	406
Regulatory liabilities	122	92
Noncurrent regulatory liabilities	253	314
PECO Energy Co | Decommissioning the Regulatory Agreement Units
Regulatory Liabilities [Line Items]
Regulatory Liabilities	247	278
PECO Energy Co | Dedicated facilities charge
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
PECO Energy Co | Deferred income taxes
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
PECO Energy Co | Over Recovered Energy and Natural Gas Costs [Member]
Regulatory Liabilities [Line Items]
Regulatory Liabilities	81	93
PECO Energy Co | Energy efficiency and demand response programs RL
Regulatory Liabilities [Line Items]
Regulatory Liabilities	1	1
PECO Energy Co | Fiber Refund
Regulatory Liabilities [Line Items]
Regulatory Liabilities	16	15
PECO Energy Co | Multi-year plan reconciliation
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
PECO Energy Co | Over-recovered revenue decoupling
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
PECO Energy Co | Removal costs
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
PECO Energy Co | Renewable portfolio standards costs
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
PECO Energy Co | Transmission formula rate annual reconciliations [Member]
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0
PECO Energy Co | Other
Regulatory Liabilities [Line Items]
Regulatory Liabilities	30	19
Baltimore Gas and Electric Company
Regulatory Liabilities [Line Items]
Regulatory Liabilities	648	800
Regulatory liabilities	12	27
Noncurrent regulatory liabilities	636	773
Baltimore Gas and Electric Company | Decommissioning the Regulatory Agreement Units
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Baltimore Gas and Electric Company | Dedicated facilities charge
Regulatory Liabilities [Line Items]
Regulatory Liabilities	143	129
Baltimore Gas and Electric Company | Deferred income taxes
Regulatory Liabilities [Line Items]
Regulatory Liabilities	484	634
Baltimore Gas and Electric Company | Over Recovered Energy and Natural Gas Costs [Member]
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Baltimore Gas and Electric Company | Energy efficiency and demand response programs RL
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Baltimore Gas and Electric Company | Fiber Refund
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Baltimore Gas and Electric Company | Multi-year plan reconciliation
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Baltimore Gas and Electric Company | Over-recovered revenue decoupling
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Baltimore Gas and Electric Company | Removal costs
Regulatory Liabilities [Line Items]
Regulatory Liabilities	11	28
Baltimore Gas and Electric Company | Renewable portfolio standards costs
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Baltimore Gas and Electric Company | Transmission formula rate annual reconciliations [Member]
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0
Baltimore Gas and Electric Company | Other
Regulatory Liabilities [Line Items]
Regulatory Liabilities	10	9
Pepco Holdings LLC
Regulatory Liabilities [Line Items]
Regulatory Liabilities	863	975
Regulatory liabilities	69	71
Noncurrent regulatory liabilities	794	904
Pepco Holdings LLC | Decommissioning the Regulatory Agreement Units
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Pepco Holdings LLC | Dedicated facilities charge
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Pepco Holdings LLC | Deferred income taxes
Regulatory Liabilities [Line Items]
Regulatory Liabilities	665	750
Pepco Holdings LLC | Over Recovered Energy and Natural Gas Costs [Member]
Regulatory Liabilities [Line Items]
Regulatory Liabilities	15	24
Pepco Holdings LLC | Energy efficiency and demand response programs RL
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Pepco Holdings LLC | Fiber Refund
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Pepco Holdings LLC | Multi-year plan reconciliation
Regulatory Liabilities [Line Items]
Regulatory Liabilities	9	23
Pepco Holdings LLC | Over-recovered revenue decoupling
Regulatory Liabilities [Line Items]
Regulatory Liabilities	2	2
Pepco Holdings LLC | Removal costs
Regulatory Liabilities [Line Items]
Regulatory Liabilities	106	116
Pepco Holdings LLC | Renewable portfolio standards costs
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Pepco Holdings LLC | Transmission formula rate annual reconciliations [Member]
Regulatory Liabilities [Line Items]
Regulatory Liabilities	14
Pepco Holdings LLC | Other
Regulatory Liabilities [Line Items]
Regulatory Liabilities	52	60
Potomac Electric Power Company
Regulatory Liabilities [Line Items]
Regulatory Liabilities	327	397
Regulatory liabilities	17	15
Noncurrent regulatory liabilities	310	382
Potomac Electric Power Company | Decommissioning the Regulatory Agreement Units
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Potomac Electric Power Company | Dedicated facilities charge
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Potomac Electric Power Company | Deferred income taxes
Regulatory Liabilities [Line Items]
Regulatory Liabilities	285	338
Potomac Electric Power Company | Over Recovered Energy and Natural Gas Costs [Member]
Regulatory Liabilities [Line Items]
Regulatory Liabilities	8	9
Potomac Electric Power Company | Energy efficiency and demand response programs RL
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Potomac Electric Power Company | Fiber Refund
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Potomac Electric Power Company | Multi-year plan reconciliation
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	16
Potomac Electric Power Company | Over-recovered revenue decoupling
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Potomac Electric Power Company | Removal costs
Regulatory Liabilities [Line Items]
Regulatory Liabilities	20	20
Potomac Electric Power Company | Renewable portfolio standards costs
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Potomac Electric Power Company | Transmission formula rate annual reconciliations [Member]
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0
Potomac Electric Power Company | Other
Regulatory Liabilities [Line Items]
Regulatory Liabilities	14	14
Delmarva Power & Light Company
Regulatory Liabilities [Line Items]
Regulatory Liabilities	367	415
Regulatory liabilities	42	50
Noncurrent regulatory liabilities	325	365
Delmarva Power & Light Company | Decommissioning the Regulatory Agreement Units
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Delmarva Power & Light Company | Dedicated facilities charge
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Delmarva Power & Light Company | Deferred income taxes
Regulatory Liabilities [Line Items]
Regulatory Liabilities	247	274
Delmarva Power & Light Company | Over Recovered Energy and Natural Gas Costs [Member]
Regulatory Liabilities [Line Items]
Regulatory Liabilities	7	15
Delmarva Power & Light Company | Energy efficiency and demand response programs RL
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Delmarva Power & Light Company | Fiber Refund
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Delmarva Power & Light Company | Multi-year plan reconciliation
Regulatory Liabilities [Line Items]
Regulatory Liabilities	9	7
Delmarva Power & Light Company | Over-recovered revenue decoupling
Regulatory Liabilities [Line Items]
Regulatory Liabilities	2	2
Delmarva Power & Light Company | Removal costs
Regulatory Liabilities [Line Items]
Regulatory Liabilities	86	96
Delmarva Power & Light Company | Renewable portfolio standards costs
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Delmarva Power & Light Company | Transmission formula rate annual reconciliations [Member]
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0
Delmarva Power & Light Company | Other
Regulatory Liabilities [Line Items]
Regulatory Liabilities	16	21
Atlantic City Electric Company
Regulatory Liabilities [Line Items]
Regulatory Liabilities	156	146
Regulatory liabilities	10	6
Noncurrent regulatory liabilities	146	140
Atlantic City Electric Company | Decommissioning the Regulatory Agreement Units
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Atlantic City Electric Company | Dedicated facilities charge
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Atlantic City Electric Company | Deferred income taxes
Regulatory Liabilities [Line Items]
Regulatory Liabilities	133	138
Atlantic City Electric Company | Over Recovered Energy and Natural Gas Costs [Member]
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Atlantic City Electric Company | Energy efficiency and demand response programs RL
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Atlantic City Electric Company | Fiber Refund
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Atlantic City Electric Company | Multi-year plan reconciliation
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Atlantic City Electric Company | Over-recovered revenue decoupling
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Atlantic City Electric Company | Removal costs
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Atlantic City Electric Company | Renewable portfolio standards costs
Regulatory Liabilities [Line Items]
Regulatory Liabilities	0	0
Atlantic City Electric Company | Transmission formula rate annual reconciliations [Member]
Regulatory Liabilities [Line Items]
Regulatory Liabilities	14
Atlantic City Electric Company | Other
Regulatory Liabilities [Line Items]
Regulatory Liabilities	$ 9	$ 8

Regulatory Matters - Descriptio

Regulatory Matters - Description of Regulatory Assets and Liabilities (Details) - USD ($) $ in Millions	48 Months Ended	72 Months Ended
	Dec. 31, 2024	Jul. 10, 2023	Dec. 31, 2023
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	$ 10,650		$ 10,913
Regulatory Liabilities	10,609		9,965
Multi-year plan reconciliation
Public Utilities, General Disclosures [Line Items]
Regulatory Liabilities	9		23
Renewable portfolio standards costs
Public Utilities, General Disclosures [Line Items]
Regulatory Liabilities	1,369		1,102
Potomac Electric Power Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	603		600
Regulatory Liabilities	327		397
Approved Capital Expenditure		$ 500
Potomac Electric Power Company | Multi-year plan reconciliation
Public Utilities, General Disclosures [Line Items]
Regulatory Liabilities	0		16
Potomac Electric Power Company | Renewable portfolio standards costs
Public Utilities, General Disclosures [Line Items]
Regulatory Liabilities	0		0
Delmarva Power & Light Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	275		272
Regulatory Liabilities	367		415
Delmarva Power & Light Company | Multi-year plan reconciliation
Public Utilities, General Disclosures [Line Items]
Regulatory Liabilities	9		7
Delmarva Power & Light Company | Renewable portfolio standards costs
Public Utilities, General Disclosures [Line Items]
Regulatory Liabilities	0		0
Baltimore Gas and Electric Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	995		956
Regulatory Liabilities	648		800
Baltimore Gas and Electric Company | Multi-year plan reconciliation
Public Utilities, General Disclosures [Line Items]
Regulatory Liabilities	0		0
Baltimore Gas and Electric Company | Renewable portfolio standards costs
Public Utilities, General Disclosures [Line Items]
Regulatory Liabilities	0		0
Atlantic City Electric Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	603		608
Regulatory Liabilities	156		146
Approved Capital Expenditure	220
Atlantic City Electric Company | Multi-year plan reconciliation
Public Utilities, General Disclosures [Line Items]
Regulatory Liabilities	0		0
Atlantic City Electric Company | Renewable portfolio standards costs
Public Utilities, General Disclosures [Line Items]
Regulatory Liabilities	0		0
PECO Energy Co
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	1,068		920
Regulatory Liabilities	375		406
PECO Energy Co | Multi-year plan reconciliation
Public Utilities, General Disclosures [Line Items]
Regulatory Liabilities	0		0
PECO Energy Co | Renewable portfolio standards costs
Public Utilities, General Disclosures [Line Items]
Regulatory Liabilities	0		0
Pepco Holdings LLC
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	1,893		1,924
Regulatory Liabilities	863		975
Pepco Holdings LLC | Multi-year plan reconciliation
Public Utilities, General Disclosures [Line Items]
Regulatory Liabilities	9		23
Pepco Holdings LLC | Renewable portfolio standards costs
Public Utilities, General Disclosures [Line Items]
Regulatory Liabilities	0		0
Commonwealth Edison Co
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	3,721		4,129
Regulatory Liabilities	8,618		7,684
Commonwealth Edison Co | Multi-year plan reconciliation
Public Utilities, General Disclosures [Line Items]
Regulatory Liabilities	0		0
Commonwealth Edison Co | Renewable portfolio standards costs
Public Utilities, General Disclosures [Line Items]
Regulatory Liabilities	1,369		1,102
MARYLAND | Delmarva Power & Light Company | Multi-year plan reconciliation
Public Utilities, General Disclosures [Line Items]
Regulatory Liabilities	4
Illinois Power Agency | Commonwealth Edison Co | Renewable portfolio standards costs
Public Utilities, General Disclosures [Line Items]
Regulatory Liabilities	73
Illinois Commerce Commission | Commonwealth Edison Co | Renewable portfolio standards costs
Public Utilities, General Disclosures [Line Items]
Regulatory Liabilities	1,296
COVID-19 Regulatory Asset
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	59		41
COVID-19 Regulatory Asset | Potomac Electric Power Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	49		10
COVID-19 Regulatory Asset | Delmarva Power & Light Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	3		3
COVID-19 Regulatory Asset | Baltimore Gas and Electric Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	4		6
COVID-19 Regulatory Asset | Atlantic City Electric Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	0		0
COVID-19 Regulatory Asset | PECO Energy Co
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	0		11
COVID-19 Regulatory Asset | Pepco Holdings LLC
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	52		13
COVID-19 Regulatory Asset | Commonwealth Edison Co
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	3		11
DC PLUG charge
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	1		3
DC PLUG charge | Potomac Electric Power Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	1		3
Approved Capital Expenditure		250
DC PLUG charge | Delmarva Power & Light Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	0		0
DC PLUG charge | Baltimore Gas and Electric Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	0		0
DC PLUG charge | Atlantic City Electric Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	0		0
DC PLUG charge | PECO Energy Co
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	0		0
DC PLUG charge | Pepco Holdings LLC
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	1		3
DC PLUG charge | Commonwealth Edison Co
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	0		0
DC PLUG charge | DISTRICT OF COLUMBIA | Potomac Electric Power Company
Public Utilities, General Disclosures [Line Items]
Approved Capital Expenditure		$ 250
Deferred storm costs
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	125		114
Deferred storm costs | Potomac Electric Power Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	8		9
Deferred storm costs | Delmarva Power & Light Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	1		2
Deferred storm costs | Baltimore Gas and Electric Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	73		84
Deferred storm costs | Atlantic City Electric Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	20		19
Deferred storm costs | PECO Energy Co
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	23		0
Deferred storm costs | Pepco Holdings LLC
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	29		30
Deferred storm costs | Commonwealth Edison Co
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	0		0
Deferred storm costs | MARYLAND | Baltimore Gas and Electric Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	27
Deferred storm costs | NEW JERSEY | Atlantic City Electric Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	15
Difference between Carrying Value and Fair Value [Member]
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	95		101
Difference between Carrying Value and Fair Value [Member] | Pepco Holdings LLC
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	362		385
Multi-year plan reconciliation
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	170		112
Multi-year plan reconciliation | Potomac Electric Power Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	23		0
Multi-year plan reconciliation | Delmarva Power & Light Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	0		0
Multi-year plan reconciliation | Baltimore Gas and Electric Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	66		112
Multi-year plan reconciliation | Atlantic City Electric Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	0		0
Multi-year plan reconciliation | PECO Energy Co
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	0		0
Multi-year plan reconciliation | Pepco Holdings LLC
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	23		0
Multi-year plan reconciliation | Commonwealth Edison Co
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	81		0
Multi-year plan reconciliation | MARYLAND PUBLIC SERVICE COMMISSION [Domain] | Potomac Electric Power Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	18
Multi-year plan reconciliation | MARYLAND PUBLIC SERVICE COMMISSION [Domain] | Baltimore Gas and Electric Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	53
Under-recovered revenue decoupling
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	188		176
Under-recovered revenue decoupling | Potomac Electric Power Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	60		100
Under-recovered revenue decoupling | Delmarva Power & Light Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	0		0
Under-recovered revenue decoupling | Baltimore Gas and Electric Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	98		64
Under-recovered revenue decoupling | Atlantic City Electric Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	30		12
Under-recovered revenue decoupling | PECO Energy Co
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	0		0
Under-recovered revenue decoupling | Pepco Holdings LLC
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	90		112
Under-recovered revenue decoupling | Commonwealth Edison Co
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	0		0
2029 | COVID-19 Regulatory Asset | MARYLAND | Potomac Electric Power Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	7
2027 | COVID-19 Regulatory Asset | MARYLAND | Delmarva Power & Light Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	1
2028 | COVID-19 Regulatory Asset | DELAWARE | Delmarva Power & Light Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	2
2028 | Deferred storm costs | MARYLAND | Baltimore Gas and Electric Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	46
2028 | Under-recovered revenue decoupling | DISTRICT OF COLUMBIA | Potomac Electric Power Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	52
2039 | COVID-19 Regulatory Asset | DISTRICT OF COLUMBIA | Potomac Electric Power Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	42
2026 | Deferred storm costs | NEW JERSEY | Atlantic City Electric Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	4
2026 | Multi-year plan reconciliation | MARYLAND PUBLIC SERVICE COMMISSION [Domain] | Potomac Electric Power Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	5
2025 | Under-recovered revenue decoupling | MARYLAND | Potomac Electric Power Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets	8
2022 | MARYLAND | Delmarva Power & Light Company | Multi-year plan reconciliation
Public Utilities, General Disclosures [Line Items]
Regulatory Liabilities	$ 5
2022 | Multi-year plan reconciliation | MARYLAND PUBLIC SERVICE COMMISSION [Domain] | Baltimore Gas and Electric Company
Public Utilities, General Disclosures [Line Items]
Regulatory Assets			$ 13

Regulatory Matters - Capitalize

Regulatory Matters - Capitalized Ratemaking Amounts Not Recognized (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Public Utilities, General Disclosures [Line Items]
Public Utilities, Amount of Allowance for Earnings on Equity Capitalized for Rate Making Purposes	$ 117	$ 110
Commonwealth Edison Co
Public Utilities, General Disclosures [Line Items]
Public Utilities, Amount of Allowance for Earnings on Equity Capitalized for Rate Making Purposes	46	32
PECO Energy Co
Public Utilities, General Disclosures [Line Items]
Public Utilities, Amount of Allowance for Earnings on Equity Capitalized for Rate Making Purposes	0	0
Baltimore Gas and Electric Company
Public Utilities, General Disclosures [Line Items]
Public Utilities, Amount of Allowance for Earnings on Equity Capitalized for Rate Making Purposes	16	33
Pepco Holdings LLC
Public Utilities, General Disclosures [Line Items]
Public Utilities, Amount of Allowance for Earnings on Equity Capitalized for Rate Making Purposes	55	45
Potomac Electric Power Company
Public Utilities, General Disclosures [Line Items]
Public Utilities, Amount of Allowance for Earnings on Equity Capitalized for Rate Making Purposes	40	34
Delmarva Power & Light Company
Public Utilities, General Disclosures [Line Items]
Public Utilities, Amount of Allowance for Earnings on Equity Capitalized for Rate Making Purposes	1	1
Atlantic City Electric Company
Public Utilities, General Disclosures [Line Items]
Public Utilities, Amount of Allowance for Earnings on Equity Capitalized for Rate Making Purposes	$ 14	$ 10

Revenue from Contracts with C_3

Revenue from Contracts with Customers (All Registrants) - Narrative (Details)	Jul. 01, 2020 extension	Dec. 31, 2024	Jul. 02, 2020 interest	Dec. 31, 2019
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period		1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period		1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period		1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period		1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period		1 year
Potomac Electric Power Company | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period		1 year
Potomac Electric Power Company | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period		1 year
Potomac Electric Power Company | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period		1 year
Potomac Electric Power Company | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period		1 year
Potomac Electric Power Company | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period		1 year
Potomac Electric Power Company | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Collaborative Arrangement, Rights And Obligations, Undivided Interest	60%
Potomac Electric Power Company | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-07-01
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period				35 years
Potomac Electric Power Company | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period		31 years
Potomac Electric Power Company | the Buyer | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Collaborative Arrangement, Rights And Obligations, Undivided Interest			10%
Collaborative Arrangement, Rights And Obligations, Number of Additional Undivided Interests | interest			2
Collaborative Arrangement, Rights And Obligations, Period	3 years
Collaborative Arrangement, Rights And Obligations, Number of Extensions | extension	2
Collaborative Arrangement, Rights And Obligations, Extension Term	2 years
Delmarva Power & Light Company | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period		1 year
Delmarva Power & Light Company | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period		1 year
Delmarva Power & Light Company | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period		1 year
Delmarva Power & Light Company | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period		1 year
Delmarva Power & Light Company | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period		1 year
Delmarva Power & Light Company | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Collaborative Arrangement, Rights And Obligations, Undivided Interest	60%
Delmarva Power & Light Company | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-07-01
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period				35 years
Delmarva Power & Light Company | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period		31 years
Delmarva Power & Light Company | the Buyer | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Collaborative Arrangement, Rights And Obligations, Undivided Interest			10%
Collaborative Arrangement, Rights And Obligations, Number of Additional Undivided Interests | interest			2
Collaborative Arrangement, Rights And Obligations, Period	3 years
Collaborative Arrangement, Rights And Obligations, Number of Extensions | extension	2
Collaborative Arrangement, Rights And Obligations, Extension Term	2 years
Atlantic City Electric Company | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period		1 year
Atlantic City Electric Company | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period		1 year
Atlantic City Electric Company | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period		1 year
Atlantic City Electric Company | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period		1 year
Atlantic City Electric Company | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period		1 year
Atlantic City Electric Company | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Collaborative Arrangement, Rights And Obligations, Undivided Interest	60%
Atlantic City Electric Company | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-07-01
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period				35 years
Atlantic City Electric Company | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period		31 years
Atlantic City Electric Company | the Buyer | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Collaborative Arrangement, Rights And Obligations, Undivided Interest			10%
Collaborative Arrangement, Rights And Obligations, Number of Additional Undivided Interests | interest			2
Collaborative Arrangement, Rights And Obligations, Period	3 years
Collaborative Arrangement, Rights And Obligations, Number of Extensions | extension	2
Collaborative Arrangement, Rights And Obligations, Extension Term	2 years

Revenue from Contracts with C_4

Revenue from Contracts with Customers (All Registrants) - Change in Contract with Customer, Asset and Liability (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Contract Liabilities [Roll Forward]
Beginning Balance - Contract Liabilities	$ 133	$ 101
Consideration received		39
Revenues recognized	(6)	(7)
Ending Balance - Contract Liabilities	127	133
Pepco Holdings LLC
Contract Liabilities [Roll Forward]
Beginning Balance - Contract Liabilities	133	101
Consideration received		39
Revenues recognized	(6)	(7)
Ending Balance - Contract Liabilities	127	133
Potomac Electric Power Company
Contract Liabilities [Roll Forward]
Beginning Balance - Contract Liabilities	107	81
Consideration received		31
Revenues recognized	(6)	(5)
Ending Balance - Contract Liabilities	101	107
Delmarva Power & Light Company
Contract Liabilities [Roll Forward]
Beginning Balance - Contract Liabilities	13	10
Consideration received		4
Revenues recognized	0	(1)
Ending Balance - Contract Liabilities	13	13
Atlantic City Electric Company
Contract Liabilities [Roll Forward]
Beginning Balance - Contract Liabilities	13	10
Consideration received		4
Revenues recognized	0	(1)
Ending Balance - Contract Liabilities	$ 13	$ 13

Revenue from Contracts with C_5

Revenue from Contracts with Customers (All Registrants) - Performance Obligations (Details) $ in Millions	Dec. 31, 2024 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 127
Pepco Holdings LLC
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	127
Potomac Electric Power Company
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	101
Delmarva Power & Light Company
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	13
Atlantic City Electric Company
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	13
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 7
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01 | Pepco Holdings LLC
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 7
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01 | Potomac Electric Power Company
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 5
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01 | Delmarva Power & Light Company
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 1
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01 | Atlantic City Electric Company
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 1
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 6
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01 | Pepco Holdings LLC
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 6
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01 | Potomac Electric Power Company
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 5
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01 | Delmarva Power & Light Company
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 1
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01 | Atlantic City Electric Company
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 5
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01 | Pepco Holdings LLC
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 5
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01 | Potomac Electric Power Company
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 5
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01 | Delmarva Power & Light Company
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01 | Atlantic City Electric Company
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 5
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01 | Pepco Holdings LLC
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 5
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01 | Potomac Electric Power Company
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 5
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01 | Delmarva Power & Light Company
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01 | Atlantic City Electric Company
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 104
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01 | Pepco Holdings LLC
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 104
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01 | Potomac Electric Power Company
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 81
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01 | Delmarva Power & Light Company
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 11
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01 | Atlantic City Electric Company
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 12
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year

Segment Information - Narrative

Segment Information - Narrative (Details)	12 Months Ended
	Dec. 31, 2024 Reportable_segment
Exelon Consolidation
Segment Reporting Information [Line Items]
Number of reportable segments	6
Pepco Holdings LLC
Segment Reporting Information [Line Items]
Number of reportable segments	3

Segment Information - Reconcili

Segment Information - Reconciliation to Consolidated Financial Statements (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Total operating revenues	$ 23,028	$ 21,727	$ 19,078
Operating and maintenance	4,940	4,559	4,673
Taxes other than income taxes	1,504	1,408	1,390
Gain (loss) on sale of assets and businesses	12	10	(2)
Interest expense, net	1,889	1,704	1,422
Other, net	262	408	535
Income taxes	207	374	349
Net income	2,460	2,328	2,171
Total assets	107,784	101,856
Related Party
Segment Reporting Information [Line Items]
Purchased power from affiliates	0	0	159
Interest expense to affiliates, net	(25)	(25)	(25)
Pepco Holdings LLC
Segment Reporting Information [Line Items]
Total operating revenues	6,448	6,026	5,565
Operating and maintenance	1,046	1,110	966
Taxes other than income taxes	528	487	475
Gain (loss) on sale of assets and businesses	(1)	9	0
Interest expense, net	373	323	292
Other, net	97	108	78
Income taxes	189	116	9
Net income	741	590	608
Operating revenues from affiliates	10	9	10
Total assets	28,297	27,066
Pepco Holdings LLC | Related Party
Segment Reporting Information [Line Items]
Purchased power from affiliates	0	0	51
Operating and maintenance from affiliates	204	179	191
Interest expense to affiliates, net	(3)	0	0
Operating revenues from affiliates	10	9	10
Commonwealth Edison Co
Segment Reporting Information [Line Items]
Total operating revenues	8,219	7,844	5,761
Operating and maintenance	1,284	1,096	1,094
Taxes other than income taxes	376	369	374
Gain (loss) on sale of assets and businesses	5	0	(2)
Interest expense, net	487	464	401
Other, net	94	75	54
Income taxes	116	314	264
Net income	1,066	1,090	917
Operating revenues from affiliates	8	16	16
Total assets	44,750	42,827
Commonwealth Edison Co | Related Party
Segment Reporting Information [Line Items]
Purchased power from affiliates	0	0	59
Operating and maintenance from affiliates	419	354	318
Interest expense to affiliates, net	(14)	(13)	(13)
Operating revenues from affiliates	8	16	16
PECO Energy Co
Segment Reporting Information [Line Items]
Total operating revenues	3,973	3,894	3,903
Operating and maintenance	875	786	791
Taxes other than income taxes	218	202	202
Gain (loss) on sale of assets and businesses	4	0	0
Interest expense, net	221	192	165
Other, net	37	36	31
Income taxes	(12)	20	79
Net income	551	563	576
Total assets	17,123	15,595
PECO Energy Co | Related Party
Segment Reporting Information [Line Items]
Purchased power from affiliates	0	0	33
Operating and maintenance from affiliates	245	217	201
Interest expense to affiliates, net	(11)	(9)	(12)
Operating revenues from affiliates	10	9	7
Baltimore Gas and Electric Company
Segment Reporting Information [Line Items]
Total operating revenues	4,426	4,027	3,895
Operating and maintenance	790	520	670
Taxes other than income taxes	345	319	302
Interest expense, net	216	182	152
Other, net	36	18	21
Income taxes	49	133	8
Net income	527	485	380
Total assets	15,542	14,331
Baltimore Gas and Electric Company | Related Party
Segment Reporting Information [Line Items]
Purchased power from affiliates	0	0	18
Operating and maintenance from affiliates	246	221	207
Operating revenues from affiliates	10	9	15
Operating Segments
Segment Reporting Information [Line Items]
Total operating revenues	23,028	21,727	19,078
Operating and maintenance	4,940	4,559	4,673
Depreciation and amortization	3,594	3,506	3,325
Taxes other than income taxes	1,504	1,408	1,390
Gain (loss) on sale of assets and businesses	(12)	(10)	2
Interest expense, net	1,889	1,704	1,422
Other, net	(262)	(408)	(535)
Income taxes	207	374	349
Net income	2,460	2,328	2,054
Capital expenditures	7,097	7,411	6,921
Operating Segments | Related Party
Segment Reporting Information [Line Items]
Purchased power from affiliates	0	0	159
Operating and maintenance from affiliates	0	0	0
Interest expense to affiliates, net	(25)	(25)	(25)
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Other, net	22	19	22
Income taxes	(145)	(212)	(21)
Net income	2,460	2,328	2,170
Total assets	45,452	43,632
Intersegment Eliminations
Segment Reporting Information [Line Items]
Total operating revenues	(1,903)	(1,823)	(1,869)
Operating and maintenance	(788)	(814)	(755)
Depreciation and amortization	0	0	0
Taxes other than income taxes	0	0	0
Gain (loss) on sale of assets and businesses	0	0	0
Interest expense, net	0	(2)	(3)
Other, net	40	19	(61)
Income taxes	0	(2)	(11)
Net income	0	(20)	(34)
Capital expenditures	0	0	0
Total assets	(3,940)	(4,337)
Intersegment Eliminations | Related Party
Segment Reporting Information [Line Items]
Operating revenues from affiliates	0	0	6
Intersegment Eliminations | Related Party
Segment Reporting Information [Line Items]
Purchased power from affiliates	0	0	(2)
Operating and maintenance from affiliates	(1,155)	(1,008)	(1,005)
Interest expense to affiliates, net	0	(2)	(2)
Intersegment Eliminations | Related Party | Intersubsegment Eliminations
Segment Reporting Information [Line Items]
Operating revenues from affiliates	(1,893)	(1,793)	(1,865)
Intersegment Eliminations | Pepco Holdings LLC
Segment Reporting Information [Line Items]
Total operating revenues	(444)	(431)	(383)
Operating and maintenance	0	0	0
Depreciation and amortization	0	0	0
Taxes other than income taxes	0	0	0
Gain (loss) on sale of assets and businesses	0	0	0
Interest expense, net	0	0	1
Other, net	0	0	(1)
Income taxes	0	0	0
Net income	0	0	0
Capital expenditures	0	0	0
Total assets	(40)	(41)
Intersegment Eliminations | Pepco Holdings LLC | Related Party
Segment Reporting Information [Line Items]
Purchased power from affiliates	0	0	0
Operating and maintenance from affiliates	(444)	(431)	(383)
Interest expense to affiliates, net	0	0	0
Operating revenues from affiliates	(444)	(432)	(383)
Commonwealth Edison Co | Operating Segments
Segment Reporting Information [Line Items]
Total operating revenues	8,219	7,844	5,761
Operating and maintenance	1,284	1,096	1,094
Depreciation and amortization	1,514	1,403	1,323
Taxes other than income taxes	376	369	374
Gain (loss) on sale of assets and businesses	(5)	0	2
Interest expense, net	487	464	401
Other, net	(94)	(75)	(54)
Income taxes	116	314	264
Net income	1,066	1,090	917
Capital expenditures	2,195	2,576	2,506
Total assets	44,750	42,827
Commonwealth Edison Co | Operating Segments | Related Party
Segment Reporting Information [Line Items]
Purchased power from affiliates	0	0	59
Operating and maintenance from affiliates	419	354	318
Interest expense to affiliates, net	(14)	(13)	(13)
Commonwealth Edison Co | Intersegment Eliminations | Related Party
Segment Reporting Information [Line Items]
Operating revenues from affiliates	8	16	16
PECO Energy Co | Operating Segments
Segment Reporting Information [Line Items]
Total operating revenues	3,973	3,894	3,903
Operating and maintenance	875	786	791
Depreciation and amortization	428	397	373
Taxes other than income taxes	218	202	202
Gain (loss) on sale of assets and businesses	(4)	0	0
Interest expense, net	221	192	165
Other, net	(37)	(36)	(31)
Income taxes	(12)	20	79
Net income	551	563	576
Capital expenditures	1,553	1,426	1,349
Total assets	17,123	15,595
PECO Energy Co | Operating Segments | Related Party
Segment Reporting Information [Line Items]
Purchased power from affiliates	0	0	33
Operating and maintenance from affiliates	245	217	201
Interest expense to affiliates, net	(11)	(9)	(12)
PECO Energy Co | Intersegment Eliminations | Related Party
Segment Reporting Information [Line Items]
Operating revenues from affiliates	10	9	7
Baltimore Gas and Electric Company | Operating Segments
Segment Reporting Information [Line Items]
Total operating revenues	4,426	4,027	3,895
Operating and maintenance	790	520	670
Depreciation and amortization	638	654	630
Taxes other than income taxes	345	319	302
Gain (loss) on sale of assets and businesses	0	0	0
Interest expense, net	216	182	152
Other, net	(36)	(18)	(21)
Income taxes	49	133	8
Net income	527	485	380
Capital expenditures	1,420	1,367	1,262
Total assets	15,542	14,331
Baltimore Gas and Electric Company | Operating Segments | Related Party
Segment Reporting Information [Line Items]
Purchased power from affiliates	0	0	18
Operating and maintenance from affiliates	246	221	207
Interest expense to affiliates, net	0	0	0
Baltimore Gas and Electric Company | Intersegment Eliminations | Related Party
Segment Reporting Information [Line Items]
Operating revenues from affiliates	10	9	15
Pepco Holdings LLC | Operating Segments
Segment Reporting Information [Line Items]
Total operating revenues	6,448	6,026	5,565
Operating and maintenance	1,046	1,110	966
Depreciation and amortization	947	990	938
Taxes other than income taxes	528	487	475
Gain (loss) on sale of assets and businesses	1	(9)	0
Interest expense, net	373	323	292
Other, net	(97)	(108)	(78)
Income taxes	189	116	9
Net income	741	590	608
Capital expenditures	1,863	1,988	1,709
Total assets	28,297	27,066
Pepco Holdings LLC | Operating Segments | Related Party
Segment Reporting Information [Line Items]
Purchased power from affiliates	0	0	51
Operating and maintenance from affiliates	204	179	191
Interest expense to affiliates, net	(3)	0	0
Pepco Holdings LLC | Intersegment Eliminations | Related Party
Segment Reporting Information [Line Items]
Operating revenues from affiliates	10	9	10
Potomac Electric Power Company | Operating Segments
Segment Reporting Information [Line Items]
Total operating revenues	3,039	2,824	2,531
Operating and maintenance	283	336	284
Depreciation and amortization	407	441	417
Taxes other than income taxes	424	390	382
Gain (loss) on sale of assets and businesses	1	(9)	0
Interest expense, net	195	165	150
Other, net	(54)	(66)	(55)
Income taxes	90	51	(9)
Net income	390	306	305
Capital expenditures	929	957	874
Total assets	12,000	11,330
Potomac Electric Power Company | Operating Segments | Related Party
Segment Reporting Information [Line Items]
Purchased power from affiliates	0	0	39
Operating and maintenance from affiliates	251	236	223
Interest expense to affiliates, net	3	0	0
Potomac Electric Power Company | Intersegment Eliminations | Related Party
Segment Reporting Information [Line Items]
Operating revenues from affiliates	7	9	5
Delmarva Power & Light Company | Operating Segments
Segment Reporting Information [Line Items]
Total operating revenues	1,787	1,688	1,595
Operating and maintenance	196	193	183
Depreciation and amortization	245	244	232
Taxes other than income taxes	79	75	72
Gain (loss) on sale of assets and businesses	0	0	0
Interest expense, net	94	74	66
Other, net	(25)	(18)	(13)
Income taxes	49	35	14
Net income	209	177	169
Capital expenditures	556	562	430
Total assets	6,421	5,993
Delmarva Power & Light Company | Operating Segments | Related Party
Segment Reporting Information [Line Items]
Purchased power from affiliates	0	0	10
Operating and maintenance from affiliates	181	171	166
Interest expense to affiliates, net	1	0	0
Delmarva Power & Light Company | Intersegment Eliminations | Related Party
Segment Reporting Information [Line Items]
Operating revenues from affiliates	7	8	6
Atlantic City Electric Company | Operating Segments
Segment Reporting Information [Line Items]
Total operating revenues	1,628	1,522	1,431
Operating and maintenance	206	233	189
Depreciation and amortization	278	283	261
Taxes other than income taxes	9	8	9
Gain (loss) on sale of assets and businesses	0	0	0
Interest expense, net	74	72	66
Other, net	(14)	(20)	(11)
Income taxes	55	36	3
Net income	155	120	148
Capital expenditures	373	460	398
Total assets	5,349	5,157
Atlantic City Electric Company | Operating Segments | Related Party
Segment Reporting Information [Line Items]
Purchased power from affiliates	0	0	2
Operating and maintenance from affiliates	162	153	142
Interest expense to affiliates, net	(5)	0	0
Atlantic City Electric Company | Intersegment Eliminations | Related Party
Segment Reporting Information [Line Items]
Operating revenues from affiliates	2	2	2
Corporate and Other | Corporate, Non-Segment
Segment Reporting Information [Line Items]
Total operating revenues	1,865	1,759	1,823
Operating and maintenance	1,733	1,861	1,907
Depreciation and amortization	67	62	61
Taxes other than income taxes	37	31	37
Gain (loss) on sale of assets and businesses	(4)	(1)	0
Interest expense, net	592	545	415
Other, net	(38)	(190)	(290)
Income taxes	(135)	(207)	0
Net income	(425)	(380)	(393)
Capital expenditures	66	54	95
Total assets	6,012	6,374
Corporate and Other | Corporate, Non-Segment | Related Party
Segment Reporting Information [Line Items]
Purchased power from affiliates	0	0	0
Operating and maintenance from affiliates	41	37	88
Interest expense to affiliates, net	3	(1)	2
Corporate and Other | Corporate, Non-Segment | Pepco Holdings LLC
Segment Reporting Information [Line Items]
Total operating revenues	438	423	391
Operating and maintenance	361	348	310
Depreciation and amortization	17	22	28
Taxes other than income taxes	16	14	12
Gain (loss) on sale of assets and businesses	0	0	0
Interest expense, net	10	12	9
Other, net	(4)	(4)	2
Income taxes	(5)	(6)	1
Net income	(13)	(13)	(14)
Capital expenditures	5	9	7
Total assets	4,567	4,627
Corporate and Other | Corporate, Non-Segment | Pepco Holdings LLC | Related Party
Segment Reporting Information [Line Items]
Purchased power from affiliates	0	0	0
Operating and maintenance from affiliates	54	50	43
Interest expense to affiliates, net	(2)	0	0
Corporate and Other | Intersegment Eliminations | Related Party
Segment Reporting Information [Line Items]
Operating revenues from affiliates	1,855	1,750	1,823
Corporate and Other | Intersegment Eliminations | Pepco Holdings LLC | Related Party
Segment Reporting Information [Line Items]
Operating revenues from affiliates	438	422	380
Electricity, US Regulated
Segment Reporting Information [Line Items]
Operating revenues	21,338	19,267	16,899
Purchased power and/or fuel	8,214	7,648	5,380
Electricity, US Regulated | Pepco Holdings LLC
Segment Reporting Information [Line Items]
Operating revenues	6,257	5,748	5,376
Purchased power and/or fuel	2,447	2,250	1,984
Electricity, US Regulated | Commonwealth Edison Co
Segment Reporting Information [Line Items]
Operating revenues	8,362	7,272	5,478
Purchased power and/or fuel	3,042	2,816	1,050
Electricity, US Regulated | PECO Energy Co
Segment Reporting Information [Line Items]
Operating revenues	3,312	3,202	3,156
Purchased power and/or fuel	1,265	1,270	1,160
Electricity, US Regulated | Baltimore Gas and Electric Company
Segment Reporting Information [Line Items]
Operating revenues	3,407	3,065	2,890
Purchased power and/or fuel	1,460	1,311	1,186
Electricity, US Regulated | Operating Segments
Segment Reporting Information [Line Items]
Operating revenues	21,216	19,916	17,083
Purchased power and/or fuel	8,214	7,648	5,380
Electricity, US Regulated | Intersegment Eliminations
Segment Reporting Information [Line Items]
Operating revenues	(22)	(51)	(31)
Purchased power and/or fuel	0	1	0
Electricity, US Regulated | Intersegment Eliminations | Pepco Holdings LLC
Segment Reporting Information [Line Items]
Operating revenues	(16)	(18)	(2)
Purchased power and/or fuel	0	0	0
Electricity, US Regulated | Commonwealth Edison Co | Operating Segments
Segment Reporting Information [Line Items]
Operating revenues	8,219	7,844	5,761
Purchased power and/or fuel	3,042	2,816	1,050
Electricity, US Regulated | PECO Energy Co | Operating Segments
Segment Reporting Information [Line Items]
Operating revenues	3,325	3,202	3,165
Purchased power and/or fuel	1,265	1,270	1,160
Electricity, US Regulated | Baltimore Gas and Electric Company | Operating Segments
Segment Reporting Information [Line Items]
Operating revenues	3,436	3,109	2,871
Purchased power and/or fuel	1,460	1,311	1,186
Electricity, US Regulated | Pepco Holdings LLC | Operating Segments
Segment Reporting Information [Line Items]
Operating revenues	6,258	5,812	5,317
Purchased power and/or fuel	2,447	2,250	1,984
Electricity, US Regulated | Potomac Electric Power Company | Operating Segments
Segment Reporting Information [Line Items]
Operating revenues	3,039	2,824	2,531
Purchased power and/or fuel	1,055	974	795
Electricity, US Regulated | Delmarva Power & Light Company | Operating Segments
Segment Reporting Information [Line Items]
Operating revenues	1,607	1,483	1,357
Purchased power and/or fuel	694	639	567
Electricity, US Regulated | Atlantic City Electric Company | Operating Segments
Segment Reporting Information [Line Items]
Operating revenues	1,628	1,522	1,431
Purchased power and/or fuel	698	637	622
Electricity, US Regulated | Corporate and Other | Corporate, Non-Segment
Segment Reporting Information [Line Items]
Operating revenues	0	0	0
Purchased power and/or fuel	0	0	0
Electricity, US Regulated | Corporate and Other | Corporate, Non-Segment | Pepco Holdings LLC
Segment Reporting Information [Line Items]
Operating revenues	0	1	0
Purchased power and/or fuel	0	0	0
Natural Gas, US Regulated
Segment Reporting Information [Line Items]
Operating revenues	1,782	1,764	2,018
Purchased power and/or fuel	469	593	834
Natural Gas, US Regulated | Pepco Holdings LLC
Segment Reporting Information [Line Items]
Operating revenues	180	205	238
Purchased power and/or fuel	66	98	129
Natural Gas, US Regulated | PECO Energy Co
Segment Reporting Information [Line Items]
Operating revenues	645	690	738
Purchased power and/or fuel	212	274	342
Natural Gas, US Regulated | Baltimore Gas and Electric Company
Segment Reporting Information [Line Items]
Operating revenues	957	869	1,037
Purchased power and/or fuel	191	220	363
Natural Gas, US Regulated | Operating Segments
Segment Reporting Information [Line Items]
Operating revenues	1,812	1,811	1,995
Purchased power and/or fuel	469	593	834
Natural Gas, US Regulated | Intersegment Eliminations
Segment Reporting Information [Line Items]
Operating revenues	(6)	(4)	(5)
Purchased power and/or fuel	0	1	0
Natural Gas, US Regulated | Intersegment Eliminations | Pepco Holdings LLC
Segment Reporting Information [Line Items]
Operating revenues	0	0	0
Purchased power and/or fuel	0	0	0
Natural Gas, US Regulated | Commonwealth Edison Co | Operating Segments
Segment Reporting Information [Line Items]
Operating revenues	0	0	0
Purchased power and/or fuel	0	0	0
Natural Gas, US Regulated | PECO Energy Co | Operating Segments
Segment Reporting Information [Line Items]
Operating revenues	648	692	738
Purchased power and/or fuel	212	274	342
Natural Gas, US Regulated | Baltimore Gas and Electric Company | Operating Segments
Segment Reporting Information [Line Items]
Operating revenues	990	918	1,024
Purchased power and/or fuel	191	220	363
Natural Gas, US Regulated | Pepco Holdings LLC | Operating Segments
Segment Reporting Information [Line Items]
Operating revenues	180	205	238
Purchased power and/or fuel	66	98	129
Natural Gas, US Regulated | Potomac Electric Power Company | Operating Segments
Segment Reporting Information [Line Items]
Operating revenues	0	0	0
Purchased power and/or fuel	0	0	0
Natural Gas, US Regulated | Delmarva Power & Light Company | Operating Segments
Segment Reporting Information [Line Items]
Operating revenues	180	205	238
Purchased power and/or fuel	66	98	129
Natural Gas, US Regulated | Atlantic City Electric Company | Operating Segments
Segment Reporting Information [Line Items]
Operating revenues	0	0	0
Purchased power and/or fuel	0	0	0
Natural Gas, US Regulated | Corporate and Other | Corporate, Non-Segment
Segment Reporting Information [Line Items]
Operating revenues	0	0	0
Purchased power and/or fuel	0	0	0
Natural Gas, US Regulated | Corporate and Other | Corporate, Non-Segment | Pepco Holdings LLC
Segment Reporting Information [Line Items]
Operating revenues	0	0	0
Purchased power and/or fuel	0	0	0
Service, Other | Operating Segments
Segment Reporting Information [Line Items]
Operating revenues	0	0	0
Service, Other | Intersegment Eliminations
Segment Reporting Information [Line Items]
Operating revenues	(1,875)	(1,768)	(1,833)
Service, Other | Intersegment Eliminations | Pepco Holdings LLC
Segment Reporting Information [Line Items]
Operating revenues	(428)	(413)	(381)
Service, Other | Commonwealth Edison Co | Operating Segments
Segment Reporting Information [Line Items]
Operating revenues	0	0	0
Service, Other | PECO Energy Co | Operating Segments
Segment Reporting Information [Line Items]
Operating revenues	0	0	0
Service, Other | Baltimore Gas and Electric Company | Operating Segments
Segment Reporting Information [Line Items]
Operating revenues	0	0	0
Service, Other | Pepco Holdings LLC | Operating Segments
Segment Reporting Information [Line Items]
Operating revenues	10	9	10
Service, Other | Potomac Electric Power Company | Operating Segments
Segment Reporting Information [Line Items]
Operating revenues	0	0	0
Service, Other | Delmarva Power & Light Company | Operating Segments
Segment Reporting Information [Line Items]
Operating revenues	0	0	0
Service, Other | Atlantic City Electric Company | Operating Segments
Segment Reporting Information [Line Items]
Operating revenues	0	0	0
Service, Other | Corporate and Other | Corporate, Non-Segment
Segment Reporting Information [Line Items]
Operating revenues	1,865	1,759	1,823
Service, Other | Corporate and Other | Corporate, Non-Segment | Pepco Holdings LLC
Segment Reporting Information [Line Items]
Operating revenues	$ 438	$ 422	$ 391

Segment Information - Electric

Segment Information - Electric and Gas Revenue by Customer Class (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Revenue, Major Customer [Line Items]
Total operating revenues	$ 23,028	$ 21,727	$ 19,078
Operating Segments
Revenue, Major Customer [Line Items]
Total operating revenues	23,028	21,727	19,078
Operating Segments | Pepco Holdings LLC
Revenue, Major Customer [Line Items]
Total operating revenues	6,448	6,026	5,565
Commonwealth Edison Co
Revenue, Major Customer [Line Items]
Total operating revenues	8,219	7,844	5,761
Operating revenues from affiliates	8	16	16
Commonwealth Edison Co | Related Party
Revenue, Major Customer [Line Items]
Operating revenues from affiliates	8	16	16
Commonwealth Edison Co | Regulated Operation
Revenue, Major Customer [Line Items]
Operating revenues	8,353	7,262	5,466
Commonwealth Edison Co | Other Regulated Revenue
Revenue, Major Customer [Line Items]
Total operating revenues	(134)	582	295
PECO Energy Co
Revenue, Major Customer [Line Items]
Total operating revenues	3,973	3,894	3,903
PECO Energy Co | Related Party
Revenue, Major Customer [Line Items]
Operating revenues from affiliates	10	9	7
PECO Energy Co | Regulated Operation
Revenue, Major Customer [Line Items]
Operating revenues	3,948	3,883	3,883
PECO Energy Co | Other Regulated Revenue
Revenue, Major Customer [Line Items]
Total operating revenues	25	11	20
PECO Energy Co | Rate-Regulated Electric Revenues
Revenue, Major Customer [Line Items]
Operating revenues from affiliates	7	7	7
PECO Energy Co | Rate-Regulated Natural Gas Revenues
Revenue, Major Customer [Line Items]
Operating revenues from affiliates	3	2	0
Baltimore Gas and Electric Company
Revenue, Major Customer [Line Items]
Total operating revenues	4,426	4,027	3,895
Baltimore Gas and Electric Company | Related Party
Revenue, Major Customer [Line Items]
Operating revenues from affiliates	10	9	15
Baltimore Gas and Electric Company | Regulated Operation
Revenue, Major Customer [Line Items]
Operating revenues	4,357	3,921	3,923
Baltimore Gas and Electric Company | Other Regulated Revenue
Revenue, Major Customer [Line Items]
Total operating revenues	69	106	(28)
Baltimore Gas and Electric Company | Rate-Regulated Electric Revenues
Revenue, Major Customer [Line Items]
Operating revenues from affiliates	7	6	7
Baltimore Gas and Electric Company | Rate-Regulated Natural Gas Revenues
Revenue, Major Customer [Line Items]
Operating revenues from affiliates	3	3	8
Pepco Holdings LLC
Revenue, Major Customer [Line Items]
Total operating revenues	6,448	6,026	5,565
Operating revenues from affiliates	10	9	10
Pepco Holdings LLC | Related Party
Revenue, Major Customer [Line Items]
Operating revenues from affiliates	10	9	10
Pepco Holdings LLC | Regulated Operation
Revenue, Major Customer [Line Items]
Operating revenues	6,434	5,948	5,616
Pepco Holdings LLC | Other Regulated Revenue
Revenue, Major Customer [Line Items]
Total operating revenues	14	78	(51)
Potomac Electric Power Company
Revenue, Major Customer [Line Items]
Total operating revenues	3,039	2,824	2,531
Operating revenues from affiliates	7	9	5
Potomac Electric Power Company | Related Party
Revenue, Major Customer [Line Items]
Operating revenues from affiliates	7	9	5
Potomac Electric Power Company | Regulated Operation
Revenue, Major Customer [Line Items]
Operating revenues	3,014	2,791	2,556
Potomac Electric Power Company | Other Regulated Revenue
Revenue, Major Customer [Line Items]
Total operating revenues	25	33	(25)
Delmarva Power & Light Company
Revenue, Major Customer [Line Items]
Total operating revenues	1,787	1,688	1,595
Operating revenues from affiliates	7	8	6
Delmarva Power & Light Company | Related Party
Revenue, Major Customer [Line Items]
Operating revenues from affiliates	7	8	6
Delmarva Power & Light Company | Regulated Operation
Revenue, Major Customer [Line Items]
Operating revenues	1,786	1,670	1,602
Delmarva Power & Light Company | Other Regulated Revenue
Revenue, Major Customer [Line Items]
Total operating revenues	1	18	(7)
Atlantic City Electric Company
Revenue, Major Customer [Line Items]
Total operating revenues	1,628	1,522	1,431
Operating revenues from affiliates	2	2	2
Atlantic City Electric Company | Related Party
Revenue, Major Customer [Line Items]
Operating revenues from affiliates	2	2	2
Atlantic City Electric Company | Regulated Operation
Revenue, Major Customer [Line Items]
Operating revenues	1,640	1,495	1,450
Atlantic City Electric Company | Other Regulated Revenue
Revenue, Major Customer [Line Items]
Total operating revenues	(12)	27	(19)
Electricity, US Regulated
Revenue, Major Customer [Line Items]
Operating revenues	21,338	19,267	16,899
Electricity, US Regulated | Operating Segments
Revenue, Major Customer [Line Items]
Operating revenues	21,216	19,916	17,083
Electricity, US Regulated | Operating Segments | Pepco Holdings LLC
Revenue, Major Customer [Line Items]
Operating revenues	6,258	5,812	5,317
Electricity, US Regulated | Commonwealth Edison Co
Revenue, Major Customer [Line Items]
Operating revenues	8,362	7,272	5,478
Electricity, US Regulated | Commonwealth Edison Co | Regulated Operation
Revenue, Major Customer [Line Items]
Operating revenues	8,353	7,262	5,466
Electricity, US Regulated | Commonwealth Edison Co | Regulated Operation | Residential
Revenue, Major Customer [Line Items]
Operating revenues	3,809	3,565	3,304
Electricity, US Regulated | Commonwealth Edison Co | Regulated Operation | Small Commercial & Industrial
Revenue, Major Customer [Line Items]
Operating revenues	2,259	1,857	1,173
Electricity, US Regulated | Commonwealth Edison Co | Regulated Operation | Large Commercial & Industrial
Revenue, Major Customer [Line Items]
Operating revenues	1,145	824	5
Electricity, US Regulated | Commonwealth Edison Co | Regulated Operation | Public Authorities & Electric Railroads
Revenue, Major Customer [Line Items]
Operating revenues	60	51	29
Electricity, US Regulated | Commonwealth Edison Co | Regulated Operation | Other
Revenue, Major Customer [Line Items]
Operating revenues	1,080	965	955
Electricity, US Regulated | Commonwealth Edison Co | Regulated Operation | Operating Segments
Revenue, Major Customer [Line Items]
Total operating revenues	17	26	28
Electricity, US Regulated | PECO Energy Co
Revenue, Major Customer [Line Items]
Operating revenues	3,312	3,202	3,156
Electricity, US Regulated | PECO Energy Co | Regulated Operation
Revenue, Major Customer [Line Items]
Operating revenues	3,302	3,193	3,147
Electricity, US Regulated | PECO Energy Co | Regulated Operation | Residential
Revenue, Major Customer [Line Items]
Operating revenues	2,169	2,090	2,026
Electricity, US Regulated | PECO Energy Co | Regulated Operation | Small Commercial & Industrial
Revenue, Major Customer [Line Items]
Operating revenues	547	526	521
Electricity, US Regulated | PECO Energy Co | Regulated Operation | Large Commercial & Industrial
Revenue, Major Customer [Line Items]
Operating revenues	261	249	299
Electricity, US Regulated | PECO Energy Co | Regulated Operation | Public Authorities & Electric Railroads
Revenue, Major Customer [Line Items]
Operating revenues	29	30	30
Electricity, US Regulated | PECO Energy Co | Regulated Operation | Other
Revenue, Major Customer [Line Items]
Operating revenues	296	298	271
Electricity, US Regulated | PECO Energy Co | Regulated Operation | Operating Segments
Revenue, Major Customer [Line Items]
Total operating revenues	17	16	16
Electricity, US Regulated | Baltimore Gas and Electric Company
Revenue, Major Customer [Line Items]
Operating revenues	3,407	3,065	2,890
Electricity, US Regulated | Baltimore Gas and Electric Company | Regulated Operation
Revenue, Major Customer [Line Items]
Operating revenues	3,400	3,055	2,883
Electricity, US Regulated | Baltimore Gas and Electric Company | Regulated Operation | Residential
Revenue, Major Customer [Line Items]
Operating revenues	2,038	1,765	1,564
Electricity, US Regulated | Baltimore Gas and Electric Company | Regulated Operation | Small Commercial & Industrial
Revenue, Major Customer [Line Items]
Operating revenues	360	331	327
Electricity, US Regulated | Baltimore Gas and Electric Company | Regulated Operation | Large Commercial & Industrial
Revenue, Major Customer [Line Items]
Operating revenues	557	528	567
Electricity, US Regulated | Baltimore Gas and Electric Company | Regulated Operation | Public Authorities & Electric Railroads
Revenue, Major Customer [Line Items]
Operating revenues	31	29	27
Electricity, US Regulated | Baltimore Gas and Electric Company | Regulated Operation | Other
Revenue, Major Customer [Line Items]
Operating revenues	414	402	398
Electricity, US Regulated | Baltimore Gas and Electric Company | Regulated Operation | Operating Segments
Revenue, Major Customer [Line Items]
Total operating revenues	14	16	14
Electricity, US Regulated | Pepco Holdings LLC
Revenue, Major Customer [Line Items]
Operating revenues	6,257	5,748	5,376
Electricity, US Regulated | Pepco Holdings LLC | Regulated Operation
Revenue, Major Customer [Line Items]
Operating revenues	6,254	5,743	5,378
Electricity, US Regulated | Pepco Holdings LLC | Regulated Operation | Residential
Revenue, Major Customer [Line Items]
Operating revenues	3,256	2,845	2,590
Electricity, US Regulated | Pepco Holdings LLC | Regulated Operation | Small Commercial & Industrial
Revenue, Major Customer [Line Items]
Operating revenues	681	651	607
Electricity, US Regulated | Pepco Holdings LLC | Regulated Operation | Large Commercial & Industrial
Revenue, Major Customer [Line Items]
Operating revenues	1,372	1,420	1,422
Electricity, US Regulated | Pepco Holdings LLC | Regulated Operation | Public Authorities & Electric Railroads
Revenue, Major Customer [Line Items]
Operating revenues	74	67	64
Electricity, US Regulated | Pepco Holdings LLC | Regulated Operation | Other
Revenue, Major Customer [Line Items]
Operating revenues	871	760	695
Electricity, US Regulated | Pepco Holdings LLC | Regulated Operation | Operating Segments
Revenue, Major Customer [Line Items]
Total operating revenues	13	14	8
Electricity, US Regulated | Potomac Electric Power Company
Revenue, Major Customer [Line Items]
Operating revenues	3,017	2,793	2,557
Electricity, US Regulated | Potomac Electric Power Company | Regulated Operation
Revenue, Major Customer [Line Items]
Operating revenues	3,014	2,791	2,556
Electricity, US Regulated | Potomac Electric Power Company | Regulated Operation | Residential
Revenue, Major Customer [Line Items]
Operating revenues	1,413	1,236	1,076
Electricity, US Regulated | Potomac Electric Power Company | Regulated Operation | Small Commercial & Industrial
Revenue, Major Customer [Line Items]
Operating revenues	184	176	155
Electricity, US Regulated | Potomac Electric Power Company | Regulated Operation | Large Commercial & Industrial
Revenue, Major Customer [Line Items]
Operating revenues	1,053	1,087	1,083
Electricity, US Regulated | Potomac Electric Power Company | Regulated Operation | Public Authorities & Electric Railroads
Revenue, Major Customer [Line Items]
Operating revenues	37	34	34
Electricity, US Regulated | Potomac Electric Power Company | Regulated Operation | Other
Revenue, Major Customer [Line Items]
Operating revenues	327	258	208
Electricity, US Regulated | Potomac Electric Power Company | Regulated Operation | Operating Segments
Revenue, Major Customer [Line Items]
Total operating revenues	10	11	6
Electricity, US Regulated | Delmarva Power & Light Company
Revenue, Major Customer [Line Items]
Operating revenues	1,602	1,460	1,360
Electricity, US Regulated | Delmarva Power & Light Company | Regulated Operation
Revenue, Major Customer [Line Items]
Operating revenues	1,606	1,465	1,364
Electricity, US Regulated | Delmarva Power & Light Company | Regulated Operation | Residential
Revenue, Major Customer [Line Items]
Operating revenues	943	827	750
Electricity, US Regulated | Delmarva Power & Light Company | Regulated Operation | Small Commercial & Industrial
Revenue, Major Customer [Line Items]
Operating revenues	253	246	235
Electricity, US Regulated | Delmarva Power & Light Company | Regulated Operation | Large Commercial & Industrial
Revenue, Major Customer [Line Items]
Operating revenues	123	126	137
Electricity, US Regulated | Delmarva Power & Light Company | Regulated Operation | Public Authorities & Electric Railroads
Revenue, Major Customer [Line Items]
Operating revenues	17	16	15
Electricity, US Regulated | Delmarva Power & Light Company | Regulated Operation | Other
Revenue, Major Customer [Line Items]
Operating revenues	270	250	227
Electricity, US Regulated | Delmarva Power & Light Company | Regulated Operation | Operating Segments
Revenue, Major Customer [Line Items]
Total operating revenues	3	3	2
Electricity, US Regulated | Atlantic City Electric Company
Revenue, Major Customer [Line Items]
Operating revenues	1,638	1,493	1,448
Electricity, US Regulated | Atlantic City Electric Company | Regulated Operation
Revenue, Major Customer [Line Items]
Operating revenues	1,640	1,495	1,450
Electricity, US Regulated | Atlantic City Electric Company | Regulated Operation | Residential
Revenue, Major Customer [Line Items]
Operating revenues	900	782	764
Electricity, US Regulated | Atlantic City Electric Company | Regulated Operation | Small Commercial & Industrial
Revenue, Major Customer [Line Items]
Operating revenues	244	229	217
Electricity, US Regulated | Atlantic City Electric Company | Regulated Operation | Large Commercial & Industrial
Revenue, Major Customer [Line Items]
Operating revenues	196	207	202
Electricity, US Regulated | Atlantic City Electric Company | Regulated Operation | Public Authorities & Electric Railroads
Revenue, Major Customer [Line Items]
Operating revenues	20	17	15
Electricity, US Regulated | Atlantic City Electric Company | Regulated Operation | Other
Revenue, Major Customer [Line Items]
Operating revenues	280	260	252
Electricity, US Regulated | Atlantic City Electric Company | Regulated Operation | Operating Segments
Revenue, Major Customer [Line Items]
Total operating revenues	0	0	0
Natural Gas, US Regulated
Revenue, Major Customer [Line Items]
Operating revenues	1,782	1,764	2,018
Natural Gas, US Regulated | Operating Segments
Revenue, Major Customer [Line Items]
Operating revenues	1,812	1,811	1,995
Natural Gas, US Regulated | Operating Segments | Pepco Holdings LLC
Revenue, Major Customer [Line Items]
Operating revenues	180	205	238
Natural Gas, US Regulated | Commonwealth Edison Co | Regulated Operation
Revenue, Major Customer [Line Items]
Operating revenues	0	0	0
Natural Gas, US Regulated | Commonwealth Edison Co | Regulated Operation | Residential
Revenue, Major Customer [Line Items]
Operating revenues	0	0	0
Natural Gas, US Regulated | Commonwealth Edison Co | Regulated Operation | Small Commercial & Industrial
Revenue, Major Customer [Line Items]
Operating revenues	0	0	0
Natural Gas, US Regulated | Commonwealth Edison Co | Regulated Operation | Large Commercial & Industrial
Revenue, Major Customer [Line Items]
Operating revenues	0	0	0
Natural Gas, US Regulated | Commonwealth Edison Co | Regulated Operation | Transportation
Revenue, Major Customer [Line Items]
Operating revenues	0	0	0
Natural Gas, US Regulated | Commonwealth Edison Co | Regulated Operation | Other
Revenue, Major Customer [Line Items]
Operating revenues	0	0	0
Natural Gas, US Regulated | Commonwealth Edison Co | Regulated Operation | Operating Segments
Revenue, Major Customer [Line Items]
Total operating revenues	0	0	0
Natural Gas, US Regulated | PECO Energy Co
Revenue, Major Customer [Line Items]
Operating revenues	645	690	738
Natural Gas, US Regulated | PECO Energy Co | Regulated Operation
Revenue, Major Customer [Line Items]
Operating revenues	646	690	736
Natural Gas, US Regulated | PECO Energy Co | Regulated Operation | Residential
Revenue, Major Customer [Line Items]
Operating revenues	445	473	512
Natural Gas, US Regulated | PECO Energy Co | Regulated Operation | Small Commercial & Industrial
Revenue, Major Customer [Line Items]
Operating revenues	157	172	186
Natural Gas, US Regulated | PECO Energy Co | Regulated Operation | Large Commercial & Industrial
Revenue, Major Customer [Line Items]
Operating revenues	0	1	0
Natural Gas, US Regulated | PECO Energy Co | Regulated Operation | Transportation
Revenue, Major Customer [Line Items]
Operating revenues	28	27	26
Natural Gas, US Regulated | PECO Energy Co | Regulated Operation | Other
Revenue, Major Customer [Line Items]
Operating revenues	16	17	12
Natural Gas, US Regulated | PECO Energy Co | Regulated Operation | Operating Segments
Revenue, Major Customer [Line Items]
Total operating revenues	2	2	2
Natural Gas, US Regulated | Baltimore Gas and Electric Company
Revenue, Major Customer [Line Items]
Operating revenues	957	869	1,037
Natural Gas, US Regulated | Baltimore Gas and Electric Company | Regulated Operation
Revenue, Major Customer [Line Items]
Operating revenues	957	866	1,040
Natural Gas, US Regulated | Baltimore Gas and Electric Company | Regulated Operation | Residential
Revenue, Major Customer [Line Items]
Operating revenues	625	568	678
Natural Gas, US Regulated | Baltimore Gas and Electric Company | Regulated Operation | Small Commercial & Industrial
Revenue, Major Customer [Line Items]
Operating revenues	110	100	111
Natural Gas, US Regulated | Baltimore Gas and Electric Company | Regulated Operation | Large Commercial & Industrial
Revenue, Major Customer [Line Items]
Operating revenues	204	161	183
Natural Gas, US Regulated | Baltimore Gas and Electric Company | Regulated Operation | Transportation
Revenue, Major Customer [Line Items]
Operating revenues	0	0	0
Natural Gas, US Regulated | Baltimore Gas and Electric Company | Regulated Operation | Other
Revenue, Major Customer [Line Items]
Operating revenues	18	37	68
Natural Gas, US Regulated | Baltimore Gas and Electric Company | Regulated Operation | Operating Segments
Revenue, Major Customer [Line Items]
Total operating revenues	3	6	5
Natural Gas, US Regulated | Pepco Holdings LLC
Revenue, Major Customer [Line Items]
Operating revenues	180	205	238
Natural Gas, US Regulated | Pepco Holdings LLC | Regulated Operation
Revenue, Major Customer [Line Items]
Operating revenues	180	205	238
Natural Gas, US Regulated | Pepco Holdings LLC | Regulated Operation | Residential
Revenue, Major Customer [Line Items]
Operating revenues	108	122	127
Natural Gas, US Regulated | Pepco Holdings LLC | Regulated Operation | Small Commercial & Industrial
Revenue, Major Customer [Line Items]
Operating revenues	43	53	55
Natural Gas, US Regulated | Pepco Holdings LLC | Regulated Operation | Large Commercial & Industrial
Revenue, Major Customer [Line Items]
Operating revenues	5	4	12
Natural Gas, US Regulated | Pepco Holdings LLC | Regulated Operation | Transportation
Revenue, Major Customer [Line Items]
Operating revenues	17	16	15
Natural Gas, US Regulated | Pepco Holdings LLC | Regulated Operation | Other
Revenue, Major Customer [Line Items]
Operating revenues	7	10	29
Natural Gas, US Regulated | Pepco Holdings LLC | Regulated Operation | Operating Segments
Revenue, Major Customer [Line Items]
Total operating revenues	0	0	0
Natural Gas, US Regulated | Potomac Electric Power Company | Regulated Operation
Revenue, Major Customer [Line Items]
Operating revenues	0	0	0
Natural Gas, US Regulated | Potomac Electric Power Company | Regulated Operation | Residential
Revenue, Major Customer [Line Items]
Operating revenues	0	0	0
Natural Gas, US Regulated | Potomac Electric Power Company | Regulated Operation | Small Commercial & Industrial
Revenue, Major Customer [Line Items]
Operating revenues	0	0	0
Natural Gas, US Regulated | Potomac Electric Power Company | Regulated Operation | Large Commercial & Industrial
Revenue, Major Customer [Line Items]
Operating revenues	0	0	0
Natural Gas, US Regulated | Potomac Electric Power Company | Regulated Operation | Transportation
Revenue, Major Customer [Line Items]
Operating revenues	0	0	0
Natural Gas, US Regulated | Potomac Electric Power Company | Regulated Operation | Other
Revenue, Major Customer [Line Items]
Operating revenues	0	0	0
Natural Gas, US Regulated | Potomac Electric Power Company | Regulated Operation | Operating Segments
Revenue, Major Customer [Line Items]
Total operating revenues	0	0	0
Natural Gas, US Regulated | Delmarva Power & Light Company
Revenue, Major Customer [Line Items]
Operating revenues	180	205	238
Natural Gas, US Regulated | Delmarva Power & Light Company | Regulated Operation
Revenue, Major Customer [Line Items]
Operating revenues	180	205	238
Natural Gas, US Regulated | Delmarva Power & Light Company | Regulated Operation | Residential
Revenue, Major Customer [Line Items]
Operating revenues	108	122	127
Natural Gas, US Regulated | Delmarva Power & Light Company | Regulated Operation | Small Commercial & Industrial
Revenue, Major Customer [Line Items]
Operating revenues	43	53	55
Natural Gas, US Regulated | Delmarva Power & Light Company | Regulated Operation | Large Commercial & Industrial
Revenue, Major Customer [Line Items]
Operating revenues	5	4	12
Natural Gas, US Regulated | Delmarva Power & Light Company | Regulated Operation | Transportation
Revenue, Major Customer [Line Items]
Operating revenues	17	16	15
Natural Gas, US Regulated | Delmarva Power & Light Company | Regulated Operation | Other
Revenue, Major Customer [Line Items]
Operating revenues	7	10	29
Natural Gas, US Regulated | Delmarva Power & Light Company | Regulated Operation | Operating Segments
Revenue, Major Customer [Line Items]
Total operating revenues	0	0	0
Natural Gas, US Regulated | Atlantic City Electric Company | Regulated Operation
Revenue, Major Customer [Line Items]
Operating revenues	0	0	0
Natural Gas, US Regulated | Atlantic City Electric Company | Regulated Operation | Residential
Revenue, Major Customer [Line Items]
Operating revenues	0	0	0
Natural Gas, US Regulated | Atlantic City Electric Company | Regulated Operation | Small Commercial & Industrial
Revenue, Major Customer [Line Items]
Operating revenues	0	0	0
Natural Gas, US Regulated | Atlantic City Electric Company | Regulated Operation | Large Commercial & Industrial
Revenue, Major Customer [Line Items]
Operating revenues	0	0	0
Natural Gas, US Regulated | Atlantic City Electric Company | Regulated Operation | Transportation
Revenue, Major Customer [Line Items]
Operating revenues	0	0	0
Natural Gas, US Regulated | Atlantic City Electric Company | Regulated Operation | Other
Revenue, Major Customer [Line Items]
Operating revenues	0	0	0
Natural Gas, US Regulated | Atlantic City Electric Company | Regulated Operation | Operating Segments
Revenue, Major Customer [Line Items]
Total operating revenues	0	0	0
Alternative Revenue | Commonwealth Edison Co | Operating Segments
Revenue, Major Customer [Line Items]
Total operating revenues	(151)	556	267
Alternative Revenue | PECO Energy Co | Operating Segments
Revenue, Major Customer [Line Items]
Total operating revenues	6	(7)	2
Alternative Revenue | Baltimore Gas and Electric Company | Operating Segments
Revenue, Major Customer [Line Items]
Total operating revenues	52	84	(47)
Alternative Revenue | Pepco Holdings LLC | Operating Segments
Revenue, Major Customer [Line Items]
Total operating revenues	1	64	(59)
Alternative Revenue | Potomac Electric Power Company | Operating Segments
Revenue, Major Customer [Line Items]
Total operating revenues	15	22	(31)
Alternative Revenue | Delmarva Power & Light Company | Operating Segments
Revenue, Major Customer [Line Items]
Total operating revenues	(2)	15	(9)
Alternative Revenue | Atlantic City Electric Company | Operating Segments
Revenue, Major Customer [Line Items]
Total operating revenues	$ (12)	$ 27	$ (19)

Accounts Receivable - Allowance

Accounts Receivable - Allowance for Credit Losses Rollforward (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Current period provision for expected credit losses	$ 208	$ 125	$ 173
Commonwealth Edison Co
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Current period provision for expected credit losses	23	4	46
PECO Energy Co
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Current period provision for expected credit losses	91	45	45
Baltimore Gas and Electric Company
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Current period provision for expected credit losses	25	16	25
Pepco Holdings LLC
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Current period provision for expected credit losses	69	60	58
Potomac Electric Power Company
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Current period provision for expected credit losses	30	33	29
Delmarva Power & Light Company
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Current period provision for expected credit losses	10	10	12
Atlantic City Electric Company
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Current period provision for expected credit losses	28	17	16
Customer accounts receivable
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	317	327
Current period provision for expected credit losses	248	170
Writeoffs, net of recoveries	159	180
Ending balance	406	317	327
Customer accounts receivable | Commonwealth Edison Co
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	69	59
Current period provision for expected credit losses	78	53
Writeoffs, net of recoveries	38	43
Ending balance	109	69	59
Customer accounts receivable | PECO Energy Co
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	95	105
Current period provision for expected credit losses	72	48
Writeoffs, net of recoveries	34	58
Ending balance	133	95	105
Customer accounts receivable | Baltimore Gas and Electric Company
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	46	54
Current period provision for expected credit losses	37	26
Writeoffs, net of recoveries	27	34
Ending balance	56	46	54
Customer accounts receivable | Pepco Holdings LLC
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	107	109
Current period provision for expected credit losses	61	43
Writeoffs, net of recoveries	60	45
Ending balance	108	107	109
Customer accounts receivable | Potomac Electric Power Company
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	52	47
Current period provision for expected credit losses	39	23
Writeoffs, net of recoveries	32	18
Ending balance	59	52	47
Customer accounts receivable | Delmarva Power & Light Company
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	19	21
Current period provision for expected credit losses	10	9
Writeoffs, net of recoveries	12	11
Ending balance	17	19	21
Customer accounts receivable | Atlantic City Electric Company
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	36	41
Current period provision for expected credit losses	12	11
Writeoffs, net of recoveries	16	16
Ending balance	32	36	41
Other receivables
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	82	82
Current period provision for expected credit losses	45	21
Writeoffs, net of recoveries	20	21
Ending balance	107	82	82
Other receivables | Commonwealth Edison Co
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	17	17
Current period provision for expected credit losses	21	5
Writeoffs, net of recoveries	4	5
Ending balance	34	17	17
Other receivables | PECO Energy Co
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	8	9
Current period provision for expected credit losses	15	4
Writeoffs, net of recoveries	5	5
Ending balance	18	8	9
Other receivables | Baltimore Gas and Electric Company
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	7	10
Current period provision for expected credit losses	6	5
Writeoffs, net of recoveries	7	8
Ending balance	6	7	10
Other receivables | Pepco Holdings LLC
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	50	46
Current period provision for expected credit losses	3	7
Writeoffs, net of recoveries	4	3
Ending balance	49	50	46
Other receivables | Potomac Electric Power Company
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	28	25
Current period provision for expected credit losses	(1)	3
Writeoffs, net of recoveries	0	0
Ending balance	27	28	25
Other receivables | Delmarva Power & Light Company
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	8	7
Current period provision for expected credit losses	1	1
Writeoffs, net of recoveries	0	0
Ending balance	9	8	7
Other receivables | Atlantic City Electric Company
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	14	14
Current period provision for expected credit losses	3	3
Writeoffs, net of recoveries	4	3
Ending balance	$ 13	$ 14	$ 14

Accounts Receivable - Unbilled

Accounts Receivable - Unbilled Customer Revenue (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unbilled customer revenue	$ 1,114	$ 991
Commonwealth Edison Co
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unbilled customer revenue	335	351
PECO Energy Co
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unbilled customer revenue	254	185
Baltimore Gas and Electric Company
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unbilled customer revenue	257	208
Pepco Holdings LLC
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unbilled customer revenue	268	247
Potomac Electric Power Company
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unbilled customer revenue	121	109
Delmarva Power & Light Company
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unbilled customer revenue	76	64
Atlantic City Electric Company
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unbilled customer revenue	$ 71	$ 74

Accounts Receivable - Purchases

Accounts Receivable - Purchases and Sales of Accounts Receivable (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable, Purchase	$ 4,128	$ 4,056
Commonwealth Edison Co
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable, Purchase	964	942
PECO Energy Co
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable, Purchase	1,111	1,099
Baltimore Gas and Electric Company
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable, Purchase	778	804
Pepco Holdings LLC
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable, Purchase	1,275	1,211
Potomac Electric Power Company
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable, Purchase	799	782
Delmarva Power & Light Company
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable, Purchase	252	228
Atlantic City Electric Company
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable, Purchase	$ 224	$ 201

Property, Plant and Equipment -

Property, Plant and Equipment - Summary of Property, Plant and Equipment (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 96,627	$ 90,844
Accumulated depreciation and amortization	18,445	17,251
Property, plant, and equipment, net	78,182	73,593
Electric—transmission and distribution
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 79,283	74,102
Electric—transmission and distribution | Minimum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	5 years
Electric—transmission and distribution | Maximum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	80 years
Gas Distribution Equipment
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 9,599	8,818
Gas Distribution Equipment | Minimum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	5 years
Gas Distribution Equipment | Maximum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	80 years
Common—electric and gas
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 2,630	2,510
Common—electric and gas | Minimum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	4 years
Common—electric and gas | Maximum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	75 years
Construction work in progress
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 4,306	4,589
Other Property Plant and Equipment
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 809	825
Other Property Plant and Equipment | Minimum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	4 years
Other Property Plant and Equipment | Maximum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	61 years
Commonwealth Edison Co
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 37,830	36,310
Accumulated depreciation and amortization	7,619	7,222
Property, plant, and equipment, net	30,211	29,088
Commonwealth Edison Co | Electric—transmission and distribution
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 36,493	34,834
Commonwealth Edison Co | Electric—transmission and distribution | Minimum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	5 years
Commonwealth Edison Co | Electric—transmission and distribution | Maximum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	80 years
Commonwealth Edison Co | Gas Distribution Equipment
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 0	0
Commonwealth Edison Co | Common—electric and gas
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	0	0
Commonwealth Edison Co | Construction work in progress
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	1,219	1,369
Commonwealth Edison Co | Other Property Plant and Equipment
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 118	107
Commonwealth Edison Co | Other Property Plant and Equipment | Minimum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	29 years
Commonwealth Edison Co | Other Property Plant and Equipment | Maximum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	50 years
PECO Energy Co
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 18,434	17,225
Accumulated depreciation and amortization	4,042	4,097
Property, plant, and equipment, net	14,392	13,128
PECO Energy Co | Electric—transmission and distribution
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 12,234	11,295
PECO Energy Co | Electric—transmission and distribution | Minimum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	5 years
PECO Energy Co | Electric—transmission and distribution | Maximum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	70 years
PECO Energy Co | Gas Distribution Equipment
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 4,247	3,905
PECO Energy Co | Gas Distribution Equipment | Minimum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	5 years
PECO Energy Co | Gas Distribution Equipment | Maximum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	70 years
PECO Energy Co | Common—electric and gas
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 1,064	1,083
PECO Energy Co | Common—electric and gas | Minimum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	5 years
PECO Energy Co | Common—electric and gas | Maximum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	55 years
PECO Energy Co | Construction work in progress
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 813	879
PECO Energy Co | Other Property Plant and Equipment
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 76	63
Average  Service Life (years)	50 years
Baltimore Gas and Electric Company
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 18,139	16,846
Accumulated depreciation and amortization	5,005	4,744
Property, plant, and equipment, net	13,134	12,102
Baltimore Gas and Electric Company | Electric—transmission and distribution
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 11,131	10,537
Baltimore Gas and Electric Company | Electric—transmission and distribution | Minimum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	5 years
Baltimore Gas and Electric Company | Electric—transmission and distribution | Maximum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	80 years
Baltimore Gas and Electric Company | Gas Distribution Equipment
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 4,796	4,428
Baltimore Gas and Electric Company | Gas Distribution Equipment | Minimum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	5 years
Baltimore Gas and Electric Company | Gas Distribution Equipment | Maximum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	80 years
Baltimore Gas and Electric Company | Common—electric and gas
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 1,385	1,275
Baltimore Gas and Electric Company | Common—electric and gas | Minimum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	4 years
Baltimore Gas and Electric Company | Common—electric and gas | Maximum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	50 years
Baltimore Gas and Electric Company | Construction work in progress
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 779	561
Baltimore Gas and Electric Company | Other Property Plant and Equipment
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 48	45
Baltimore Gas and Electric Company | Other Property Plant and Equipment | Minimum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	20 years
Baltimore Gas and Electric Company | Other Property Plant and Equipment | Maximum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	50 years
Pepco Holdings LLC
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 23,781	22,026
Accumulated depreciation and amortization	3,728	3,175
Property, plant, and equipment, net	20,053	18,851
Pepco Holdings LLC | Electric—transmission and distribution
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 21,130	19,153
Pepco Holdings LLC | Electric—transmission and distribution | Minimum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	5 years
Pepco Holdings LLC | Electric—transmission and distribution | Maximum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	75 years
Pepco Holdings LLC | Gas Distribution Equipment
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 821	748
Pepco Holdings LLC | Gas Distribution Equipment | Minimum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	5 years
Pepco Holdings LLC | Gas Distribution Equipment | Maximum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	75 years
Pepco Holdings LLC | Common—electric and gas
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 272	243
Pepco Holdings LLC | Common—electric and gas | Minimum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	5 years
Pepco Holdings LLC | Common—electric and gas | Maximum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	75 years
Pepco Holdings LLC | Construction work in progress
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 1,472	1,762
Pepco Holdings LLC | Other Property Plant and Equipment
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 86	120
Pepco Holdings LLC | Other Property Plant and Equipment | Minimum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	10 years
Pepco Holdings LLC | Other Property Plant and Equipment | Maximum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	43 years
Potomac Electric Power Company
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 14,619	13,714
Accumulated depreciation and amortization	4,522	4,284
Property, plant, and equipment, net	10,097	9,430
Potomac Electric Power Company | Electric—transmission and distribution
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 13,593	12,429
Potomac Electric Power Company | Electric—transmission and distribution | Minimum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	5 years
Potomac Electric Power Company | Electric—transmission and distribution | Maximum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	75 years
Potomac Electric Power Company | Gas Distribution Equipment
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 0	0
Potomac Electric Power Company | Common—electric and gas
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	0	0
Potomac Electric Power Company | Construction work in progress
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	1,002	1,226
Potomac Electric Power Company | Other Property Plant and Equipment
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 24	59
Potomac Electric Power Company | Other Property Plant and Equipment | Minimum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	10 years
Potomac Electric Power Company | Other Property Plant and Equipment | Maximum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	33 years
Delmarva Power & Light Company
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 7,615	7,090
Accumulated depreciation and amortization	2,075	1,925
Property, plant, and equipment, net	5,540	5,165
Delmarva Power & Light Company | Electric—transmission and distribution
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 6,086	5,590
Delmarva Power & Light Company | Electric—transmission and distribution | Minimum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	5 years
Delmarva Power & Light Company | Electric—transmission and distribution | Maximum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	75 years
Delmarva Power & Light Company | Gas Distribution Equipment
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 976	905
Delmarva Power & Light Company | Gas Distribution Equipment | Minimum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	5 years
Delmarva Power & Light Company | Gas Distribution Equipment | Maximum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	75 years
Delmarva Power & Light Company | Common—electric and gas
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 241	211
Delmarva Power & Light Company | Common—electric and gas | Minimum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	5 years
Delmarva Power & Light Company | Common—electric and gas | Maximum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	75 years
Delmarva Power & Light Company | Construction work in progress
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 275	345
Delmarva Power & Light Company | Other Property Plant and Equipment
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 37	39
Delmarva Power & Light Company | Other Property Plant and Equipment | Minimum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	10 years
Delmarva Power & Light Company | Other Property Plant and Equipment | Maximum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	43 years
Atlantic City Electric Company
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 6,164	5,876
Accumulated depreciation and amortization	1,798	1,684
Property, plant, and equipment, net	4,366	4,192
Atlantic City Electric Company | Electric—transmission and distribution
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 5,947	5,659
Atlantic City Electric Company | Electric—transmission and distribution | Minimum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	5 years
Atlantic City Electric Company | Electric—transmission and distribution | Maximum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	75 years
Atlantic City Electric Company | Gas Distribution Equipment
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 0	0
Atlantic City Electric Company | Common—electric and gas
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	0	0
Atlantic City Electric Company | Construction work in progress
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	187	189
Atlantic City Electric Company | Other Property Plant and Equipment
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 30	$ 28
Atlantic City Electric Company | Other Property Plant and Equipment | Minimum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	10 years
Atlantic City Electric Company | Other Property Plant and Equipment | Maximum
Property, Plant and Equipment [Line Items]
Average  Service Life (years)	43 years

Property, Plant and Equipment_3

Property, Plant and Equipment - Annual Depreciation Provisions as Percentage of Average Service Life (Details)	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Electric—transmission and distribution
Property, Plant and Equipment [Line Items]
Annual depreciation rate	2.83%	2.90%	2.87%
Gas Distribution Equipment
Property, Plant and Equipment [Line Items]
Annual depreciation rate	2.12%	2.15%	2.14%
Common—electric and gas
Property, Plant and Equipment [Line Items]
Annual depreciation rate	7%	7.77%	7.54%
Commonwealth Edison Co | Electric—transmission and distribution
Property, Plant and Equipment [Line Items]
Annual depreciation rate	3.06%	3.02%	3%
PECO Energy Co | Electric—transmission and distribution
Property, Plant and Equipment [Line Items]
Annual depreciation rate	2.30%	2.30%	2.29%
PECO Energy Co | Gas Distribution Equipment
Property, Plant and Equipment [Line Items]
Annual depreciation rate	1.96%	1.85%	1.87%
PECO Energy Co | Common—electric and gas
Property, Plant and Equipment [Line Items]
Annual depreciation rate	6.73%	6.87%	6.31%
Baltimore Gas and Electric Company | Electric—transmission and distribution
Property, Plant and Equipment [Line Items]
Annual depreciation rate	2.55%	2.89%	2.82%
Baltimore Gas and Electric Company | Gas Distribution Equipment
Property, Plant and Equipment [Line Items]
Annual depreciation rate	2.42%	2.56%	2.53%
Baltimore Gas and Electric Company | Common—electric and gas
Property, Plant and Equipment [Line Items]
Annual depreciation rate	7.81%	8.68%	8.20%
Pepco Holdings LLC | Electric—transmission and distribution
Property, Plant and Equipment [Line Items]
Annual depreciation rate	2.87%	3.03%	2.96%
Pepco Holdings LLC | Gas Distribution Equipment
Property, Plant and Equipment [Line Items]
Annual depreciation rate	1.38%	1.44%	1.45%
Pepco Holdings LLC | Common—electric and gas
Property, Plant and Equipment [Line Items]
Annual depreciation rate	4.82%	7.18%	8.96%
Potomac Electric Power Company | Electric—transmission and distribution
Property, Plant and Equipment [Line Items]
Annual depreciation rate	2.49%	2.51%	2.58%
Delmarva Power & Light Company | Electric—transmission and distribution
Property, Plant and Equipment [Line Items]
Annual depreciation rate	2.99%	3.29%	3.08%
Delmarva Power & Light Company | Gas Distribution Equipment
Property, Plant and Equipment [Line Items]
Annual depreciation rate	1.38%	1.44%	1.45%
Delmarva Power & Light Company | Common—electric and gas
Property, Plant and Equipment [Line Items]
Annual depreciation rate	6.14%	8.79%	10.03%
Atlantic City Electric Company | Electric—transmission and distribution
Property, Plant and Equipment [Line Items]
Annual depreciation rate	3.41%	3.66%	3.38%

Property, Plant and Equipment_4

Property, Plant and Equipment - Summary of Capitalized Interest and AFUDC (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Capitalized Interest And AFUDC [Line Items]
Allowance for Funds Used During Construction, Capitalized Interest	$ 251	$ 256	$ 215
Commonwealth Edison Co
Capitalized Interest And AFUDC [Line Items]
Allowance for Funds Used During Construction, Capitalized Interest	75	72	54
PECO Energy Co
Capitalized Interest And AFUDC [Line Items]
Allowance for Funds Used During Construction, Capitalized Interest	48	46	42
Baltimore Gas and Electric Company
Capitalized Interest And AFUDC [Line Items]
Allowance for Funds Used During Construction, Capitalized Interest	39	25	29
Pepco Holdings LLC
Capitalized Interest And AFUDC [Line Items]
Allowance for Funds Used During Construction, Capitalized Interest	89	113	90
Potomac Electric Power Company
Capitalized Interest And AFUDC [Line Items]
Allowance for Funds Used During Construction, Capitalized Interest	62	85	69
Delmarva Power & Light Company
Capitalized Interest And AFUDC [Line Items]
Allowance for Funds Used During Construction, Capitalized Interest	19	16	10
Atlantic City Electric Company
Capitalized Interest And AFUDC [Line Items]
Allowance for Funds Used During Construction, Capitalized Interest	$ 8	$ 12	$ 11

Jointly Owned Electric Utilit_3

Jointly Owned Electric Utility Plant - Ownership Interests in Jointly Owned Electric Plants and Transmission Facilities (Details) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($) V mi	Dec. 31, 2023 USD ($)
Schedule Of Jointly Owned Utility Plant Net Ownership [Abstract]
Ownership interest	100%
Delaware And New Jersey [Member]
Schedule Of Jointly Owned Utility Plant Net Ownership [Abstract]
Miles of transmission voltage lines | mi	151.3
Transmission line capacity | V	500
Delaware River Crossing [Member]
Schedule Of Jointly Owned Utility Plant Net Ownership [Abstract]
Miles of transmission voltage lines | mi	2.5
Transmission line capacity | V	500
New Freedom Switching [Member]
Schedule Of Jointly Owned Utility Plant Net Ownership [Abstract]
Transmission line capacity | V	500
Electric Transmission [Member] | Delaware And New Jersey [Member]
Schedule Of Jointly Owned Utility Plant Net Ownership [Abstract]
Plant	$ 105	$ 103
Accumulated depreciation	57	56
Jointly Owned Utility Plant, Ownership Amount of Other Assets	4	2
Electric Transmission [Member] | PECO Energy Co
Schedule Of Jointly Owned Utility Plant Net Ownership [Abstract]
Plant	84	7
Accumulated depreciation	2	0
Jointly Owned Utility Plant, Ownership Amount of Other Assets	0	70
Electric Transmission [Member] | PHI Service Company
Schedule Of Jointly Owned Utility Plant Net Ownership [Abstract]
Plant	72	6
Accumulated depreciation	3	0
Jointly Owned Utility Plant, Ownership Amount of Other Assets	0	58
Electric Transmission [Member] | Delmarva Power & Light Company
Schedule Of Jointly Owned Utility Plant Net Ownership [Abstract]
Plant	44	4
Accumulated depreciation	3	0
Jointly Owned Utility Plant, Ownership Amount of Other Assets	0	36
Electric Transmission [Member] | Atlantic City Electric Company
Schedule Of Jointly Owned Utility Plant Net Ownership [Abstract]
Plant	28	2
Accumulated depreciation	0	0
Jointly Owned Utility Plant, Ownership Amount of Other Assets	$ 0	$ 22
PECO Energy Co
Schedule Of Jointly Owned Utility Plant Net Ownership [Abstract]
Ownership interest	56%
PECO Energy Co | Delaware And New Jersey [Member]
Schedule Of Jointly Owned Utility Plant Net Ownership [Abstract]
Ownership interest	42.55%
PECO Energy Co | Delaware River Crossing [Member]
Schedule Of Jointly Owned Utility Plant Net Ownership [Abstract]
Ownership interest	42.55%
Delmarva Power & Light Company
Schedule Of Jointly Owned Utility Plant Net Ownership [Abstract]
Ownership interest	27%
Delmarva Power & Light Company | Delaware And New Jersey [Member]
Schedule Of Jointly Owned Utility Plant Net Ownership [Abstract]
Ownership interest	1%
Delmarva Power & Light Company | Delaware River Crossing [Member]
Schedule Of Jointly Owned Utility Plant Net Ownership [Abstract]
Ownership interest	7.45%
Atlantic City Electric Company
Schedule Of Jointly Owned Utility Plant Net Ownership [Abstract]
Ownership interest	17%
Atlantic City Electric Company | Delaware And New Jersey [Member]
Schedule Of Jointly Owned Utility Plant Net Ownership [Abstract]
Ownership interest	13.90%
Atlantic City Electric Company | Delaware River Crossing [Member]
Schedule Of Jointly Owned Utility Plant Net Ownership [Abstract]
Ownership interest	7.45%
Atlantic City Electric Company | New Freedom Switching [Member]
Schedule Of Jointly Owned Utility Plant Net Ownership [Abstract]
Ownership interest	21.78%
Pepco Holdings LLC
Schedule Of Jointly Owned Utility Plant Net Ownership [Abstract]
Ownership interest	44%

Asset Retirement Obligations -

Asset Retirement Obligations - Non-Nuclear Asset Retirement Obligations Rollforward (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Accretion expense	$ 2		$ 44
Commonwealth Edison Co
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Accretion expense	0		0
PECO Energy Co
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Accretion expense	0		0
Baltimore Gas and Electric Company
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Accretion expense	0		0
Pepco Holdings LLC
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Accretion expense	1		0
Potomac Electric Power Company
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Accretion expense	1		0
Delmarva Power & Light Company
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Accretion expense	0		0
Atlantic City Electric Company
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Accretion expense	0		0
Nonnuclear Decommissioning Asset Retirement Obligation [Member]
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
ARO beginning balance	269	$ 271
Asset Retirement Obligation, Revision of Estimate	26	(9)
Accretion expense	11	11
Payments	(2)	(4)
ARO ending balance	304	269	271
Nonnuclear Decommissioning Asset Retirement Obligation [Member] | Commonwealth Edison Co
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
ARO beginning balance	150	150
Asset Retirement Obligation, Revision of Estimate	12	(3)
Accretion expense	7	6
Payments	(1)	(3)
ARO ending balance	168	150	150
Nonnuclear Decommissioning Asset Retirement Obligation [Member] | PECO Energy Co
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
ARO beginning balance	27	28
Asset Retirement Obligation, Revision of Estimate	1	(1)
Accretion expense	1	1
Payments	(1)	(1)
ARO ending balance	28	27	28
Nonnuclear Decommissioning Asset Retirement Obligation [Member] | Baltimore Gas and Electric Company
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
ARO beginning balance	32	30
Asset Retirement Obligation, Revision of Estimate	3	1
Accretion expense	1	1
Payments	0	0
ARO ending balance	36	32	30
Nonnuclear Decommissioning Asset Retirement Obligation [Member] | Pepco Holdings LLC
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
ARO beginning balance	56	59
Asset Retirement Obligation, Revision of Estimate	10	(6)
Accretion expense	2	3
Payments	0	0
ARO ending balance	68	56	59
Nonnuclear Decommissioning Asset Retirement Obligation [Member] | Potomac Electric Power Company
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
ARO beginning balance	37	39
Asset Retirement Obligation, Revision of Estimate	10	(4)
Accretion expense	2	2
Payments	0	0
ARO ending balance	49	37	39
Nonnuclear Decommissioning Asset Retirement Obligation [Member] | Delmarva Power & Light Company
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
ARO beginning balance	13	13
Asset Retirement Obligation, Revision of Estimate	0	(1)
Accretion expense	0	1
Payments	0	0
ARO ending balance	13	13	13
Nonnuclear Decommissioning Asset Retirement Obligation [Member] | Atlantic City Electric Company
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
ARO beginning balance	6	7
Asset Retirement Obligation, Revision of Estimate	0	(1)
Accretion expense	0	0
Payments	0	0
ARO ending balance	$ 6	$ 6	$ 7

Leases - Types of Leases (Detai

Leases - Types of Leases (Details)	12 Months Ended
	Dec. 31, 2024
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease terms, Lessee, Operating Lease	1 year
Options to extend the term, Lessee, Operating Lease	3 years
Option to terminate within, Lessee, Operating Lease	3 years
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease terms, Lessee, Operating Lease	81 years
Options to extend the term, Lessee, Operating Lease	30 years
Option to terminate within, Lessee, Operating Lease	8 years
Real Estate
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Description	●
Vehicles
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Description	●
Commonwealth Edison Co | Minimum
Lessee, Lease, Description [Line Items]
Remaining lease terms, Lessee, Operating Lease	1 year
Options to extend the term, Lessee, Operating Lease	N/A years
Option to terminate within, Lessee, Operating Lease	N/A years
Commonwealth Edison Co | Maximum
Lessee, Lease, Description [Line Items]
Remaining lease terms, Lessee, Operating Lease	28 years
Options to extend the term, Lessee, Operating Lease	N/A years
Option to terminate within, Lessee, Operating Lease	N/A years
Commonwealth Edison Co | Real Estate
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Description	●
Commonwealth Edison Co | Vehicles
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Description
PECO Energy Co | Minimum
Lessee, Lease, Description [Line Items]
Remaining lease terms, Lessee, Operating Lease	1 year
Options to extend the term, Lessee, Operating Lease	N/A years
Option to terminate within, Lessee, Operating Lease	N/A years
PECO Energy Co | Maximum
Lessee, Lease, Description [Line Items]
Remaining lease terms, Lessee, Operating Lease	9 years
Options to extend the term, Lessee, Operating Lease	N/A years
Option to terminate within, Lessee, Operating Lease	N/A years
PECO Energy Co | Real Estate
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Description	●
PECO Energy Co | Vehicles
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Description
Baltimore Gas and Electric Company | Minimum
Lessee, Lease, Description [Line Items]
Remaining lease terms, Lessee, Operating Lease	1 year
Options to extend the term, Lessee, Operating Lease	3 years
Option to terminate within, Lessee, Operating Lease	3 years
Baltimore Gas and Electric Company | Maximum
Lessee, Lease, Description [Line Items]
Remaining lease terms, Lessee, Operating Lease	81 years
Options to extend the term, Lessee, Operating Lease	5 years
Option to terminate within, Lessee, Operating Lease	3 years
Baltimore Gas and Electric Company | Real Estate
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Description	●
Baltimore Gas and Electric Company | Vehicles
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Description	●
Pepco Holdings LLC | Minimum
Lessee, Lease, Description [Line Items]
Remaining lease terms, Lessee, Operating Lease	1 year
Options to extend the term, Lessee, Operating Lease	3 years
Option to terminate within, Lessee, Operating Lease	N/A years
Pepco Holdings LLC | Maximum
Lessee, Lease, Description [Line Items]
Remaining lease terms, Lessee, Operating Lease	7 years
Options to extend the term, Lessee, Operating Lease	30 years
Option to terminate within, Lessee, Operating Lease	N/A years
Pepco Holdings LLC | Real Estate
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Description	●
Pepco Holdings LLC | Vehicles
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Description	●
Potomac Electric Power Company | Minimum
Lessee, Lease, Description [Line Items]
Remaining lease terms, Lessee, Operating Lease	1 year
Options to extend the term, Lessee, Operating Lease	5 years
Option to terminate within, Lessee, Operating Lease	N/A years
Potomac Electric Power Company | Maximum
Lessee, Lease, Description [Line Items]
Remaining lease terms, Lessee, Operating Lease	7 years
Options to extend the term, Lessee, Operating Lease	5 years
Option to terminate within, Lessee, Operating Lease	N/A years
Potomac Electric Power Company | Real Estate
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Description	●
Potomac Electric Power Company | Vehicles
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Description	●
Delmarva Power & Light Company | Minimum
Lessee, Lease, Description [Line Items]
Remaining lease terms, Lessee, Operating Lease	1 year
Options to extend the term, Lessee, Operating Lease	3 years
Option to terminate within, Lessee, Operating Lease	N/A years
Delmarva Power & Light Company | Maximum
Lessee, Lease, Description [Line Items]
Remaining lease terms, Lessee, Operating Lease	7 years
Options to extend the term, Lessee, Operating Lease	30 years
Option to terminate within, Lessee, Operating Lease	N/A years
Delmarva Power & Light Company | Real Estate
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Description	●
Delmarva Power & Light Company | Vehicles
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Description	●
Atlantic City Electric Company | Minimum
Lessee, Lease, Description [Line Items]
Remaining lease terms, Lessee, Operating Lease	1 year
Options to extend the term, Lessee, Operating Lease	5 years
Option to terminate within, Lessee, Operating Lease	N/A years
Atlantic City Electric Company | Maximum
Lessee, Lease, Description [Line Items]
Remaining lease terms, Lessee, Operating Lease	7 years
Options to extend the term, Lessee, Operating Lease	5 years
Option to terminate within, Lessee, Operating Lease	N/A years
Atlantic City Electric Company | Real Estate
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Description	●
Atlantic City Electric Company | Vehicles
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Description	●

Leases - Components of Lease Co

Leases - Components of Lease Cost (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Schedule of Components of Lease Cost [Line Items]
Operating lease costs	$ 57	$ 58	$ 66
Variable lease costs	9	9	8
Total lease costs	66	67	74
Sublease Income	$ 4	$ 4	4
Operating Lease, Weighted Average Remaining Lease Term	8 years 2 months 12 days	8 years 9 months 18 days
Operating Lease, Weighted Average Discount Rate, Percent	4%	4%
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 8	$ 35	46
Commonwealth Edison Co
Schedule of Components of Lease Cost [Line Items]
Operating lease costs	0	1	2
Variable lease costs	0	1	1
Total lease costs	$ 0	$ 2	3
Operating Lease, Weighted Average Remaining Lease Term	1 year 8 months 12 days	1 year 9 months 18 days
Operating Lease, Weighted Average Discount Rate, Percent	0.80%	0.70%
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 0	$ 0	0
PECO Energy Co
Schedule of Components of Lease Cost [Line Items]
Operating lease costs	0	0	0
Variable lease costs	0	0	0
Total lease costs	$ 0	$ 0	0
Operating Lease, Weighted Average Remaining Lease Term	5 years 3 months 18 days	5 years
Operating Lease, Weighted Average Discount Rate, Percent	2.80%	2.50%
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 0	$ 0	0
Baltimore Gas and Electric Company
Schedule of Components of Lease Cost [Line Items]
Operating lease costs	8	5	15
Variable lease costs	0	0	0
Total lease costs	$ 8	$ 5	15
Operating Lease, Weighted Average Remaining Lease Term	17 years 4 months 24 days	17 years 1 month 6 days
Operating Lease, Weighted Average Discount Rate, Percent	5%	5%
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 1	$ 32	0
Pepco Holdings LLC
Schedule of Components of Lease Cost [Line Items]
Operating lease costs	41	43	42
Variable lease costs	3	3	2
Total lease costs	44	46	44
Sublease Income	4	4	4
Amortization of ROU asset	18	16	14
Interest on lease liabilities	6	6	4
Total finance lease cost	$ 24	$ 22	18
Operating Lease, Weighted Average Remaining Lease Term	5 years 3 months 18 days	6 years 1 month 6 days
Finance Lease, Weighted Average Remaining Lease Term	4 years 4 months 24 days	4 years 10 months 24 days
Operating Lease, Weighted Average Discount Rate, Percent	4.20%	4.20%
Finance Lease, Weighted Average Discount Rate, Percent	3.40%	2.70%
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 5	$ 3	2
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	15	11	14
Potomac Electric Power Company
Schedule of Components of Lease Cost [Line Items]
Operating lease costs	10	11	10
Variable lease costs	1	1	1
Total lease costs	11	12	11
Amortization of ROU asset	7	6	5
Interest on lease liabilities	2	2	1
Total finance lease cost	$ 9	$ 8	6
Operating Lease, Weighted Average Remaining Lease Term	7 years 1 month 6 days	7 years 7 months 6 days
Finance Lease, Weighted Average Remaining Lease Term	4 years 4 months 24 days	4 years 10 months 24 days
Operating Lease, Weighted Average Discount Rate, Percent	4.10%	4.10%
Finance Lease, Weighted Average Discount Rate, Percent	3.50%	2.70%
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 1	$ 0	0
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	7	5	4
Delmarva Power & Light Company
Schedule of Components of Lease Cost [Line Items]
Operating lease costs	10	11	12
Variable lease costs	1	1	1
Total lease costs	11	12	13
Sublease Income	4	4	4
Amortization of ROU asset	7	6	6
Interest on lease liabilities	2	2	2
Total finance lease cost	$ 9	$ 8	8
Operating Lease, Weighted Average Remaining Lease Term	6 years 10 months 24 days	7 years 4 months 24 days
Finance Lease, Weighted Average Remaining Lease Term	4 years 2 months 12 days	4 years 9 months 18 days
Operating Lease, Weighted Average Discount Rate, Percent	4.10%	4%
Finance Lease, Weighted Average Discount Rate, Percent	3.10%	2.60%
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 2	$ 1	1
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	4	3	7
Atlantic City Electric Company
Schedule of Components of Lease Cost [Line Items]
Operating lease costs	5	6	6
Variable lease costs	1	1	1
Total lease costs	6	7	7
Amortization of ROU asset	4	4	3
Interest on lease liabilities	2	1	1
Total finance lease cost	$ 6	$ 5	4
Operating Lease, Weighted Average Remaining Lease Term	3 years 1 month 6 days	3 years 2 months 12 days
Finance Lease, Weighted Average Remaining Lease Term	4 years 6 months	5 years 1 month 6 days
Operating Lease, Weighted Average Discount Rate, Percent	3.90%	3.60%
Finance Lease, Weighted Average Discount Rate, Percent	3.50%	2.80%
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 2	$ 2	1
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	$ 4	$ 3	$ 3

Leases - Supplemental Balance S

Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Supplemental Balance Sheet Information [Line Items]
Other deferred debits and other assets	Other	Other
Other current liabilities	$ 512	$ 519
Other deferred credits and other liabilities	$ 2,282	$ 2,088
Total operating lease liabilities	Other current liabilities, Other deferred credits and other liabilities	Other current liabilities, Other deferred credits and other liabilities
Other Current Liabilities
Supplemental Balance Sheet Information [Line Items]
Other current liabilities	$ 38	$ 38
Other Noncurrent Liabilities
Supplemental Balance Sheet Information [Line Items]
Other deferred credits and other liabilities	$ 217	$ 248
Commonwealth Edison Co
Supplemental Balance Sheet Information [Line Items]
Other deferred debits and other assets	Other	Other
Other current liabilities	$ 270	$ 219
Other deferred credits and other liabilities	$ 1,232	$ 865
Total operating lease liabilities	Other current liabilities, Other deferred credits and other liabilities	Other current liabilities, Other deferred credits and other liabilities
Commonwealth Edison Co | Other Current Liabilities
Supplemental Balance Sheet Information [Line Items]
Other current liabilities	$ 0	$ 0
Commonwealth Edison Co | Other Noncurrent Liabilities
Supplemental Balance Sheet Information [Line Items]
Other deferred credits and other liabilities	$ 0	$ 0
PECO Energy Co
Supplemental Balance Sheet Information [Line Items]
Other deferred debits and other assets	Other	Other
Other current liabilities	$ 80	$ 59
Other deferred credits and other liabilities	$ 100	$ 79
Total operating lease liabilities	Other current liabilities, Other deferred credits and other liabilities	Other current liabilities, Other deferred credits and other liabilities
PECO Energy Co | Other Current Liabilities
Supplemental Balance Sheet Information [Line Items]
Other current liabilities	$ 0	$ 0
PECO Energy Co | Other Noncurrent Liabilities
Supplemental Balance Sheet Information [Line Items]
Other deferred credits and other liabilities	$ 0	$ 0
Baltimore Gas and Electric Company
Supplemental Balance Sheet Information [Line Items]
Other deferred debits and other assets	Other	Other
Other current liabilities	$ 39	$ 32
Other deferred credits and other liabilities	$ 97	$ 91
Total operating lease liabilities	Other current liabilities, Other deferred credits and other liabilities	Other current liabilities, Other deferred credits and other liabilities
Baltimore Gas and Electric Company | Other Current Liabilities
Supplemental Balance Sheet Information [Line Items]
Other current liabilities	$ 3	$ 4
Baltimore Gas and Electric Company | Other Noncurrent Liabilities
Supplemental Balance Sheet Information [Line Items]
Other deferred credits and other liabilities	$ 16	$ 17
Pepco Holdings LLC
Supplemental Balance Sheet Information [Line Items]
Other deferred debits and other assets	Other	Other
Other deferred credits and other liabilities	$ 473	$ 511
Total operating lease liabilities	Other current liabilities, Other deferred credits and other liabilities	Other current liabilities, Other deferred credits and other liabilities
Plant, property and equipment, net	Property, plant and equipment, net	Property, plant and equipment, net
Long-term debt due within one year	$ 17	$ 15
Long-term debt	58	59
Total finance lease liabilities	75	74
Pepco Holdings LLC | Other Current Liabilities
Supplemental Balance Sheet Information [Line Items]
Other current liabilities	30	30
Pepco Holdings LLC | Other Noncurrent Liabilities
Supplemental Balance Sheet Information [Line Items]
Other deferred credits and other liabilities	$ 116	$ 141
Potomac Electric Power Company
Supplemental Balance Sheet Information [Line Items]
Other deferred debits and other assets	Other	Other
Other current liabilities	$ 51	$ 61
Other deferred credits and other liabilities	$ 223	$ 280
Total operating lease liabilities	Other current liabilities, Other deferred credits and other liabilities	Other current liabilities, Other deferred credits and other liabilities
Plant, property and equipment, net	Property, plant and equipment, net	Property, plant and equipment, net
Long-term debt due within one year	$ 6	$ 5
Long-term debt	21	21
Total finance lease liabilities	27	26
Potomac Electric Power Company | Other Current Liabilities
Supplemental Balance Sheet Information [Line Items]
Other current liabilities	5	5
Potomac Electric Power Company | Other Noncurrent Liabilities
Supplemental Balance Sheet Information [Line Items]
Other deferred credits and other liabilities	$ 25	$ 30
Delmarva Power & Light Company
Supplemental Balance Sheet Information [Line Items]
Other deferred debits and other assets	Other	Other
Other current liabilities	$ 22	$ 21
Other deferred credits and other liabilities	$ 114	$ 93
Total operating lease liabilities	Other current liabilities, Other deferred credits and other liabilities	Other current liabilities, Other deferred credits and other liabilities
Plant, property and equipment, net	Property, plant and equipment, net	Property, plant and equipment, net
Long-term debt due within one year	$ 7	$ 6
Long-term debt	21	23
Total finance lease liabilities	28	29
Delmarva Power & Light Company | Other Current Liabilities
Supplemental Balance Sheet Information [Line Items]
Other current liabilities	6	7
Delmarva Power & Light Company | Other Noncurrent Liabilities
Supplemental Balance Sheet Information [Line Items]
Other deferred credits and other liabilities	$ 32	$ 36
Atlantic City Electric Company
Supplemental Balance Sheet Information [Line Items]
Other deferred debits and other assets	Other	Other
Other current liabilities	$ 10	$ 12
Other deferred credits and other liabilities	$ 62	$ 49
Total operating lease liabilities	Other current liabilities, Other deferred credits and other liabilities	Other current liabilities, Other deferred credits and other liabilities
Plant, property and equipment, net	Property, plant and equipment, net	Property, plant and equipment, net
Long-term debt due within one year	$ 4	$ 4
Long-term debt	16	15
Total finance lease liabilities	20	19
Atlantic City Electric Company | Other Current Liabilities
Supplemental Balance Sheet Information [Line Items]
Other current liabilities	3	3
Atlantic City Electric Company | Other Noncurrent Liabilities
Supplemental Balance Sheet Information [Line Items]
Other deferred credits and other liabilities	$ 5	$ 6

Leases - Lessee Future Minimum

Leases - Lessee Future Minimum Operating Lease Maturity Payments (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Schedule of Lessee, Operating Lease, Liability, Maturity [Line Items]
2025	$ 49
2026	44
2027	42
2028	42
2029	25
2029	112
Total	314
Interest	59
Total operating lease liabilities	255
Commonwealth Edison Co
Schedule of Lessee, Operating Lease, Liability, Maturity [Line Items]
2025	0
2026	0
2027	0
2028	0
2029	0
2029	0
Total	0
Interest	0
Total operating lease liabilities	0
PECO Energy Co
Schedule of Lessee, Operating Lease, Liability, Maturity [Line Items]
2025	0
2026	0
2027	0
2028	0
2029	0
2029	0
Total	0
Interest	0
Total operating lease liabilities	0
Baltimore Gas and Electric Company
Schedule of Lessee, Operating Lease, Liability, Maturity [Line Items]
2025	4
2026	3
2027	3
2028	3
2029	3
2029	21
Total	37
Interest	18
Total operating lease liabilities	19
Pepco Holdings LLC
Schedule of Lessee, Operating Lease, Liability, Maturity [Line Items]
2025	36
2026	30
2027	30
2028	31
2029	12
2029	29
Total	168
Interest	22
Total operating lease liabilities	146
Schedule of Lessee, Finance Lease, Liability, Maturity [Line Items]
2025	19
2026	19
2027	17
2028	12
2029	9
Remaining years	6
Total	82
Interest	7
Total finance lease liabilities	75	$ 74
Potomac Electric Power Company
Schedule of Lessee, Operating Lease, Liability, Maturity [Line Items]
2025	6
2026	5
2027	4
2028	4
2029	4
2029	12
Total	35
Interest	5
Total operating lease liabilities	30
Schedule of Lessee, Finance Lease, Liability, Maturity [Line Items]
2025	7
2026	7
2027	6
2028	5
2029	3
Remaining years	2
Total	30
Interest	3
Total finance lease liabilities	27	26
Delmarva Power & Light Company
Schedule of Lessee, Operating Lease, Liability, Maturity [Line Items]
2025	8
2026	6
2027	6
2028	6
2029	6
2029	16
Total	48
Interest	10
Total operating lease liabilities	38
Schedule of Lessee, Finance Lease, Liability, Maturity [Line Items]
2025	7
2026	7
2027	7
2028	5
2029	3
Remaining years	2
Total	31
Interest	3
Total finance lease liabilities	28	29
Atlantic City Electric Company
Schedule of Lessee, Operating Lease, Liability, Maturity [Line Items]
2025	3
2026	2
2027	2
2028	1
2029	1
2029	0
Total	9
Interest	1
Total operating lease liabilities	8
Schedule of Lessee, Finance Lease, Liability, Maturity [Line Items]
2025	5
2026	5
2027	4
2028	3
2029	2
Remaining years	2
Total	21
Interest	1
Total finance lease liabilities	$ 20	$ 19

Leases - Lessee - Supplemental

Leases - Lessee - Supplemental Cash Flow Information Related to Leases (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Supplemental Cash Flow Information [Line Items]
Operating cash flows from operating leases	$ 48	$ 65	$ 66
Commonwealth Edison Co
Supplemental Cash Flow Information [Line Items]
Operating cash flows from operating leases	0	2	3
PECO Energy Co
Supplemental Cash Flow Information [Line Items]
Operating cash flows from operating leases	0	0	0
Baltimore Gas and Electric Company
Supplemental Cash Flow Information [Line Items]
Operating cash flows from operating leases	4	15	16
Pepco Holdings LLC
Supplemental Cash Flow Information [Line Items]
Operating cash flows from operating leases	35	37	37
Finance lease, principal payments	17	15	13
Potomac Electric Power Company
Supplemental Cash Flow Information [Line Items]
Operating cash flows from operating leases	7	7	8
Finance lease, principal payments	6	5	5
Delmarva Power & Light Company
Supplemental Cash Flow Information [Line Items]
Operating cash flows from operating leases	7	9	9
Finance lease, principal payments	7	6	5
Atlantic City Electric Company
Supplemental Cash Flow Information [Line Items]
Operating cash flows from operating leases	3	3	4
Finance lease, principal payments	$ 4	$ 4	$ 3

Leases - Lessor - Types of Leas

Leases - Lessor - Types of Leases (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Lessor, Lease, Description [Line Items]
Operating lease income	$ 4	$ 5	$ 4
Minimum
Lessor, Lease, Description [Line Items]
Remaining lease terms, Lessor, Operating Lease	1 year
Options to extend the term, Lessor, Operating Lease	5 years
Maximum
Lessor, Lease, Description [Line Items]
Remaining lease terms, Lessor, Operating Lease	78 years
Options to extend the term, Lessor, Operating Lease	79 years
Real Estate
Lessor, Lease, Description [Line Items]
Lessor, Operating Lease, Description	●
Commonwealth Edison Co
Lessor, Lease, Description [Line Items]
Operating lease income	$ 0	0	0
Commonwealth Edison Co | Minimum
Lessor, Lease, Description [Line Items]
Remaining lease terms, Lessor, Operating Lease	1 year
Options to extend the term, Lessor, Operating Lease	5 years
Commonwealth Edison Co | Maximum
Lessor, Lease, Description [Line Items]
Remaining lease terms, Lessor, Operating Lease	12 years
Options to extend the term, Lessor, Operating Lease	79 years
Commonwealth Edison Co | Real Estate
Lessor, Lease, Description [Line Items]
Lessor, Operating Lease, Description	●
PECO Energy Co
Lessor, Lease, Description [Line Items]
Operating lease income	$ 0	0	0
PECO Energy Co | Minimum
Lessor, Lease, Description [Line Items]
Remaining lease terms, Lessor, Operating Lease	1 year
Options to extend the term, Lessor, Operating Lease	5 years
PECO Energy Co | Maximum
Lessor, Lease, Description [Line Items]
Remaining lease terms, Lessor, Operating Lease	78 years
Options to extend the term, Lessor, Operating Lease	50 years
PECO Energy Co | Real Estate
Lessor, Lease, Description [Line Items]
Lessor, Operating Lease, Description	●
Baltimore Gas and Electric Company
Lessor, Lease, Description [Line Items]
Operating lease income	$ 0	0	0
Baltimore Gas and Electric Company | Minimum
Lessor, Lease, Description [Line Items]
Remaining lease terms, Lessor, Operating Lease	18 years
Options to extend the term, Lessor, Operating Lease	N/A years
Baltimore Gas and Electric Company | Maximum
Lessor, Lease, Description [Line Items]
Remaining lease terms, Lessor, Operating Lease	18 years
Options to extend the term, Lessor, Operating Lease	N/A years
Baltimore Gas and Electric Company | Real Estate
Lessor, Lease, Description [Line Items]
Lessor, Operating Lease, Description	●
Pepco Holdings LLC
Lessor, Lease, Description [Line Items]
Operating lease income	$ 4	4	4
Pepco Holdings LLC | Minimum
Lessor, Lease, Description [Line Items]
Remaining lease terms, Lessor, Operating Lease	1 year
Options to extend the term, Lessor, Operating Lease	N/A years
Pepco Holdings LLC | Maximum
Lessor, Lease, Description [Line Items]
Remaining lease terms, Lessor, Operating Lease	8 years
Options to extend the term, Lessor, Operating Lease	N/A years
Pepco Holdings LLC | Real Estate
Lessor, Lease, Description [Line Items]
Lessor, Operating Lease, Description	●
Potomac Electric Power Company
Lessor, Lease, Description [Line Items]
Operating lease income	$ 0	0	0
Potomac Electric Power Company | Minimum
Lessor, Lease, Description [Line Items]
Remaining lease terms, Lessor, Operating Lease	1 year
Options to extend the term, Lessor, Operating Lease	N/A years
Potomac Electric Power Company | Maximum
Lessor, Lease, Description [Line Items]
Remaining lease terms, Lessor, Operating Lease	1 year
Options to extend the term, Lessor, Operating Lease	N/A years
Potomac Electric Power Company | Real Estate
Lessor, Lease, Description [Line Items]
Lessor, Operating Lease, Description	●
Delmarva Power & Light Company
Lessor, Lease, Description [Line Items]
Operating lease income	$ 3	3	3
Delmarva Power & Light Company | Minimum
Lessor, Lease, Description [Line Items]
Remaining lease terms, Lessor, Operating Lease	7 years
Options to extend the term, Lessor, Operating Lease	N/A years
Delmarva Power & Light Company | Maximum
Lessor, Lease, Description [Line Items]
Remaining lease terms, Lessor, Operating Lease	8 years
Options to extend the term, Lessor, Operating Lease	N/A years
Delmarva Power & Light Company | Real Estate
Lessor, Lease, Description [Line Items]
Lessor, Operating Lease, Description	●
Atlantic City Electric Company | Real Estate
Lessor, Lease, Description [Line Items]
Operating lease income	$ 0	$ 0	$ 0

Leases - Lessor - Components of

Leases - Lessor - Components of Operating Lease Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Schedule of Operating Lease, Lease Income [Line Items]
Operating lease income	$ 4	$ 5	$ 4
Variable lease income	1	1	1
Commonwealth Edison Co
Schedule of Operating Lease, Lease Income [Line Items]
Operating lease income	0	0	0
Variable lease income	0	0	0
PECO Energy Co
Schedule of Operating Lease, Lease Income [Line Items]
Operating lease income	0	0	0
Variable lease income	0	0	0
Baltimore Gas and Electric Company
Schedule of Operating Lease, Lease Income [Line Items]
Operating lease income	0	0	0
Variable lease income	0	0	0
Pepco Holdings LLC
Schedule of Operating Lease, Lease Income [Line Items]
Operating lease income	4	4	4
Variable lease income	1	1	1
Potomac Electric Power Company
Schedule of Operating Lease, Lease Income [Line Items]
Operating lease income	0	0	0
Variable lease income	0	0	0
Delmarva Power & Light Company
Schedule of Operating Lease, Lease Income [Line Items]
Operating lease income	3	3	3
Variable lease income	$ 1	$ 1	$ 1

Leases - Lessor - Operating Lea

Leases - Lessor - Operating Lease, Payments, Fiscal Year Maturity (Details) $ in Millions	Dec. 31, 2024 USD ($)
Schedule of Lessor, Operating Lease, Payments to be Received, Maturity [Line Items]
2025	$ 6
2026	6
2027	6
2028	5
2029	4
Remaining years	17
Total	44
Commonwealth Edison Co
Schedule of Lessor, Operating Lease, Payments to be Received, Maturity [Line Items]
2025	1
2026	0
2027	0
2028	0
2029	0
Remaining years	0
Total	1
PECO Energy Co
Schedule of Lessor, Operating Lease, Payments to be Received, Maturity [Line Items]
2025	1
2026	1
2027	0
2028	0
2029	0
Remaining years	3
Total	5
Baltimore Gas and Electric Company
Schedule of Lessor, Operating Lease, Payments to be Received, Maturity [Line Items]
2025	0
2026	0
2027	0
2028	0
2029	0
Remaining years	1
Total	1
Pepco Holdings LLC
Schedule of Lessor, Operating Lease, Payments to be Received, Maturity [Line Items]
2025	4
2026	5
2027	5
2028	5
2029	4
Remaining years	13
Total	36
Potomac Electric Power Company
Schedule of Lessor, Operating Lease, Payments to be Received, Maturity [Line Items]
2025	0
2026	0
2027	0
2028	0
2029	0
Remaining years	0
Total	0
Delmarva Power & Light Company
Schedule of Lessor, Operating Lease, Payments to be Received, Maturity [Line Items]
2025	4
2026	4
2027	4
2028	5
2029	4
Remaining years	13
Total	$ 34

Asset Impairments (Exelon and_2

Asset Impairments (Exelon and BGE) - Narrative (Details) - Utilities Operating Expense, Maintenance, Operations, and Other Costs and Expenses $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)
Property, Plant and Equipment [Line Items]
Asset impairment charges	$ 48
Baltimore Gas and Electric Company
Property, Plant and Equipment [Line Items]
Asset impairment charges	$ 48

Intangible Assets - Narrative (

Intangible Assets - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2024	Mar. 24, 2016	Oct. 20, 2000
Goodwill [Line Items]
Goodwill	$ 6,630	$ 6,630
Measurement Input, Share Price [Member]
Goodwill [Line Items]
Goodwill, Impaired, Facts and Circumstances Leading to Impairment	10
Commonwealth Edison Co
Goodwill [Line Items]
Goodwill	$ 2,625	2,625		$ 2,600
Pepco Holdings LLC
Goodwill [Line Items]
Goodwill	$ 4,005	$ 4,005	$ 4,000
Potomac Electric Power Company
Goodwill [Line Items]
Goodwill			2,100
Delmarva Power & Light Company
Goodwill [Line Items]
Goodwill			1,400
Atlantic City Electric Company
Goodwill [Line Items]
Goodwill			$ 500

Intangible Assets - Schedule of

Intangible Assets - Schedule of Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Mar. 24, 2016	Oct. 20, 2000
Goodwill [Line Items]
Goodwill Impairment Loss	$ 0	$ 0	$ 0
Goodwill, Additions	0	0	0
Goodwill, Gross	8,613	8,613
Accumulated Impairment Loss	1,983	1,983
Carrying amount	6,630	6,630
Commonwealth Edison Co
Goodwill [Line Items]
Goodwill Impairment Loss	0	0	0
Goodwill, Additions	0	0	0
Goodwill, Gross	4,608	4,608
Accumulated Impairment Loss	1,983	1,983
Carrying amount	2,625	2,625			$ 2,600
Pepco Holdings LLC
Goodwill [Line Items]
Goodwill Impairment Loss	0	0	0
Goodwill, Additions	0	0	$ 0
Goodwill, Gross	4,005	4,005
Accumulated Impairment Loss	0	0
Carrying amount	$ 4,005	$ 4,005		$ 4,000

Intangible Assets - Schedule _2

Intangible Assets - Schedule of Other Intangible Assets (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets and Liabilities [Line Items]
Finite-Lived Intangible Liabilities, Gross	$ (1,434)	$ (1,434)
Finite-Lived Intangible Liabilities, Accumulated Amortization	1,411	1,410
Finite-Lived Intangible Liabilities, Net	(23)	(24)
Unamortized Energy Contracts
Finite-Lived Intangible Assets and Liabilities [Line Items]
Finite-Lived Intangible Liabilities, Gross	(1,515)	(1,515)
Finite-Lived Intangible Liabilities, Accumulated Amortization	1,489	1,480
Finite-Lived Intangible Liabilities, Net	(26)	(35)
Long-term software licensing agreement
Finite-Lived Intangible Assets and Liabilities [Line Items]
Gross	81	81
Accumulated Amortization	(78)	(70)
Net	3	11
Pepco Holdings LLC | Unamortized Energy Contracts
Finite-Lived Intangible Assets and Liabilities [Line Items]
Finite-Lived Intangible Liabilities, Gross	(1,515)	(1,515)
Finite-Lived Intangible Liabilities, Accumulated Amortization	1,489	1,480
Finite-Lived Intangible Liabilities, Net	$ (26)	$ (35)

Intangible Assets - Summary of

Intangible Assets - Summary of Amortization Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Intangible asset amortization expense	$ (1)	$ (1)	$ (182)
Pepco Holdings LLC
Finite-Lived Intangible Assets [Line Items]
Intangible asset amortization expense	$ (9)	$ (10)	$ (190)

Income Taxes - Components of In

Income Taxes - Components of Income Tax Expense (Benefit) from Continuing Operations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Taxes [Line Items]
Current federal tax expense (benefit)	$ 42	$ 51	$ (24)
Deferred federal income tax expense (benefit)	(27)	193	106
Investment tax credit amortization	(2)	(2)	(3)
Current state and local tax expense (benefit)	37	4	(13)
Deferred state and local income tax expense (benefit)	157	128	283
Income taxes	207	374	349
Commonwealth Edison Co
Income Taxes [Line Items]
Current federal tax expense (benefit)	76	130	29
Deferred federal income tax expense (benefit)	(76)	45	117
Investment tax credit amortization	(1)	(1)	(1)
Current state and local tax expense (benefit)	60	(13)	(6)
Deferred state and local income tax expense (benefit)	57	153	125
Income taxes	116	314	264
PECO Energy Co
Income Taxes [Line Items]
Current federal tax expense (benefit)	51	63	13
Deferred federal income tax expense (benefit)	(46)	(36)	18
Investment tax credit amortization	0	0	0
Current state and local tax expense (benefit)	0	0	(4)
Deferred state and local income tax expense (benefit)	(17)	(7)	52
Income taxes	(12)	20	79
Baltimore Gas and Electric Company
Income Taxes [Line Items]
Current federal tax expense (benefit)	45	67	(1)
Deferred federal income tax expense (benefit)	(42)	16	(3)
Investment tax credit amortization	0	0	0
Current state and local tax expense (benefit)	0	0	0
Deferred state and local income tax expense (benefit)	46	50	12
Income taxes	49	133	8
Pepco Holdings LLC
Income Taxes [Line Items]
Current federal tax expense (benefit)	97	71	16
Deferred federal income tax expense (benefit)	21	(8)	(23)
Investment tax credit amortization	(1)	(1)	(1)
Current state and local tax expense (benefit)	19	15	2
Deferred state and local income tax expense (benefit)	53	39	15
Income taxes	189	116	9
Potomac Electric Power Company
Income Taxes [Line Items]
Current federal tax expense (benefit)	50	54	9
Deferred federal income tax expense (benefit)	3	(28)	(2)
Investment tax credit amortization	0	0	0
Current state and local tax expense (benefit)	17	12	0
Deferred state and local income tax expense (benefit)	20	13	(16)
Income taxes	90	51	(9)
Delmarva Power & Light Company
Income Taxes [Line Items]
Current federal tax expense (benefit)	29	25	(2)
Deferred federal income tax expense (benefit)	3	(6)	2
Investment tax credit amortization	0	0	0
Current state and local tax expense (benefit)	4	6	0
Deferred state and local income tax expense (benefit)	13	10	14
Income taxes	49	35	14
Atlantic City Electric Company
Income Taxes [Line Items]
Current federal tax expense (benefit)	16	9	6
Deferred federal income tax expense (benefit)	20	13	(15)
Investment tax credit amortization	0	0	0
Current state and local tax expense (benefit)	0	0	0
Deferred state and local income tax expense (benefit)	19	14	12
Income taxes	$ 55	$ 36	$ 3

Income Taxes - Reconciliation t

Income Taxes - Reconciliation to Effective Tax Rate (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Sep. 30, 2023	Mar. 31, 2022	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate [Line Items]
U.S. Federal statutory rate			21%	21%	21%
State income taxes, net of Federal income tax benefit			5.70%	3.90%	8.80%
Plant basis differences			(4.50%)	(3.90%)	(4.10%)
Excess deferred tax amortization			(13.90%)	(6.60%)	(11.80%)
Amortization of investment tax credit, including deferred taxes on basis difference			(0.10%)	(0.10%)	(0.10%)
Production tax credits and other credits			(0.60%)	(0.60%)	0.10%
Other			0.20%	0.10%	0.60%
Effective income tax rate			7.80%	13.80%	14.50%
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount	$ 54	$ 54		$ 54	$ 43
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount					67
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount					40
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount					9
Income Tax Credits and Adjustments					15
Total transaction costs relating to the Separation					12
EXCFederal And State
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate [Line Items]
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount		40
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount					$ 11
Income Tax Credits and Adjustments		$ 17
Commonwealth Edison Co
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate [Line Items]
U.S. Federal statutory rate			21%	21%	21%
State income taxes, net of Federal income tax benefit			7.80%	7.90%	8%
Plant basis differences			(0.70%)	(0.50%)	(0.60%)
Excess deferred tax amortization			(17.30%)	(5.50%)	(5.60%)
Amortization of investment tax credit, including deferred taxes on basis difference			(0.10%)	(0.10%)	(0.10%)
Production tax credits and other credits			(0.80%)	(0.60%)	(0.30%)
Other			(0.10%)	0.20%	0%
Effective income tax rate			9.80%	22.40%	22.40%
PECO Energy Co
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate [Line Items]
U.S. Federal statutory rate			21%	21%	21%
State income taxes, net of Federal income tax benefit			(2.50%)	(1.00%)	5.80%
Plant basis differences			(17.80%)	(14.40%)	(11.90%)
Excess deferred tax amortization			(2.90%)	(2.40%)	(3.00%)
Amortization of investment tax credit, including deferred taxes on basis difference			0%	0%	0%
Production tax credits and other credits			0%	0%	0%
Other			0%	0.20%	0.20%
Effective income tax rate			(2.20%)	3.40%	12.10%
Increase (Decrease) in Income Taxes					$ 38
Baltimore Gas and Electric Company
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate [Line Items]
U.S. Federal statutory rate			21%	21%	21%
State income taxes, net of Federal income tax benefit			6.40%	6.40%	2.60%
Plant basis differences			(1.50%)	(0.90%)	(1.00%)
Excess deferred tax amortization			(17.10%)	(4.60%)	(19.80%)
Amortization of investment tax credit, including deferred taxes on basis difference			0%	0%	(0.10%)
Production tax credits and other credits			(0.50%)	(0.60%)	(0.70%)
Other			0.20%	0.20%	0.10%
Effective income tax rate			8.50%	21.50%	2.10%
Pepco Holdings LLC
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate [Line Items]
U.S. Federal statutory rate			21%	21%	21%
State income taxes, net of Federal income tax benefit			6.10%	5.90%	2.10%
Plant basis differences			(0.80%)	(1.40%)	(1.70%)
Excess deferred tax amortization			(5.50%)	(8.60%)	(19.50%)
Amortization of investment tax credit, including deferred taxes on basis difference			(0.10%)	(0.10%)	(0.10%)
Production tax credits and other credits			(0.50%)	(0.60%)	(0.70%)
Other			0.10%	0.20%	0.40%
Effective income tax rate			20.30%	16.40%	1.50%
Potomac Electric Power Company
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate [Line Items]
U.S. Federal statutory rate			21%	21%	21%
State income taxes, net of Federal income tax benefit			6.10%	5.50%	(4.10%)
Plant basis differences			(1.00%)	(2.20%)	(2.70%)
Excess deferred tax amortization			(6.80%)	(9.60%)	(16.80%)
Amortization of investment tax credit, including deferred taxes on basis difference			0%	0%	0%
Production tax credits and other credits			(0.40%)	(0.70%)	(0.70%)
Other			(0.10%)	0.30%	0.30%
Effective income tax rate			18.80%	14.30%	(3.00%)
Delmarva Power & Light Company
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate [Line Items]
U.S. Federal statutory rate			21%	21%	21%
State income taxes, net of Federal income tax benefit			5.20%	6.10%	6.50%
Plant basis differences			(1.10%)	(0.70%)	(0.70%)
Excess deferred tax amortization			(5.60%)	(9.40%)	(18.40%)
Amortization of investment tax credit, including deferred taxes on basis difference			(0.10%)	(0.10%)	(0.20%)
Production tax credits and other credits			(0.40%)	(0.40%)	(0.60%)
Other			0%	0%	0.10%
Effective income tax rate			19%	16.50%	7.70%
Atlantic City Electric Company
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate [Line Items]
U.S. Federal statutory rate			21%	21%	21%
State income taxes, net of Federal income tax benefit			7.30%	7.10%	6.90%
Plant basis differences			0.30%	(0.40%)	(0.70%)
Excess deferred tax amortization			(2.00%)	(4.20%)	(24.50%)
Amortization of investment tax credit, including deferred taxes on basis difference			(0.10%)	(0.20%)	(0.20%)
Production tax credits and other credits			(0.40%)	(0.50%)	(0.50%)
Other			0.10%	0.30%	0%
Effective income tax rate			26.20%	23.10%	2%

Income Taxes - Tax Effects of T

Income Taxes - Tax Effects of Temporary Differences and Carryforwards (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Operating Loss Carryforwards [Line Items]
Plant basis differences	$ (13,150)	$ (12,631)
Accrual based contracts	19	8
Derivatives and other financial instruments	21	46
Deferred pension and postretirement obligation	512	524
Deferred debt refinancing costs	108	115
Regulatory assets and liabilities	(1,665)	(1,429)
Tax loss carryforward, net of valuation allowances	283	295
Tax credit carryforward	142	281
Corporate Alternative Minimum Tax	369	264
Investment in partnerships	(27)	(28)
Deferred Tax Assets, Other	612	619
Deferred income tax liabilities (net)	(12,776)	(11,936)
Unamortized investment tax credits	(10)	(13)
Total deferred income tax liabilities (net) and unamortized investment tax credits	(12,786)	(11,949)
Domestic Tax Authority
Operating Loss Carryforwards [Line Items]
Corporate Alternative Minimum Tax	369
Commonwealth Edison Co
Operating Loss Carryforwards [Line Items]
Plant basis differences	(5,069)	(4,993)
Accrual based contracts	0	0
Derivatives and other financial instruments	36	37
Deferred pension and postretirement obligation	(339)	(299)
Deferred debt refinancing costs	(4)	(5)
Regulatory assets and liabilities	(515)	(405)
Tax loss carryforward, net of valuation allowances	0	0
Tax credit carryforward	0	0
Corporate Alternative Minimum Tax	47	118
Investment in partnerships	0	0
Deferred Tax Assets, Other	249	227
Deferred income tax liabilities (net)	(5,595)	(5,320)
Unamortized investment tax credits	(6)	(7)
Total deferred income tax liabilities (net) and unamortized investment tax credits	(5,601)	(5,327)
Commonwealth Edison Co | Domestic Tax Authority
Operating Loss Carryforwards [Line Items]
Corporate Alternative Minimum Tax	47
PECO Energy Co
Operating Loss Carryforwards [Line Items]
Plant basis differences	(2,446)	(2,264)
Accrual based contracts	0	0
Derivatives and other financial instruments	0	0
Deferred pension and postretirement obligation	(39)	(36)
Deferred debt refinancing costs	0	0
Regulatory assets and liabilities	(254)	(208)
Tax loss carryforward, net of valuation allowances	63	47
Tax credit carryforward	0	0
Corporate Alternative Minimum Tax	166	82
Investment in partnerships	0	0
Deferred Tax Assets, Other	77	58
Deferred income tax liabilities (net)	(2,433)	(2,321)
Unamortized investment tax credits	0	0
Total deferred income tax liabilities (net) and unamortized investment tax credits	(2,433)	(2,321)
PECO Energy Co | Domestic Tax Authority
Operating Loss Carryforwards [Line Items]
Corporate Alternative Minimum Tax	166
Baltimore Gas and Electric Company
Operating Loss Carryforwards [Line Items]
Plant basis differences	(2,232)	(2,064)
Accrual based contracts	0	0
Derivatives and other financial instruments	0	0
Deferred pension and postretirement obligation	(24)	(26)
Deferred debt refinancing costs	(2)	(2)
Regulatory assets and liabilities	(37)	(4)
Tax loss carryforward, net of valuation allowances	78	77
Tax credit carryforward	0	0
Corporate Alternative Minimum Tax	95	55
Investment in partnerships	0	0
Deferred Tax Assets, Other	24	21
Deferred income tax liabilities (net)	(2,098)	(1,943)
Unamortized investment tax credits	(1)	(2)
Total deferred income tax liabilities (net) and unamortized investment tax credits	(2,099)	(1,945)
Baltimore Gas and Electric Company | Domestic Tax Authority
Operating Loss Carryforwards [Line Items]
Corporate Alternative Minimum Tax	95
Pepco Holdings LLC
Operating Loss Carryforwards [Line Items]
Plant basis differences	(3,371)	(3,262)
Accrual based contracts	6	8
Derivatives and other financial instruments	1	2
Deferred pension and postretirement obligation	(68)	(78)
Deferred debt refinancing costs	98	104
Regulatory assets and liabilities	(96)	(52)
Tax loss carryforward, net of valuation allowances	68	72
Tax credit carryforward	0	0
Corporate Alternative Minimum Tax	2	0
Investment in partnerships	0	0
Deferred Tax Assets, Other	180	186
Deferred income tax liabilities (net)	(3,180)	(3,020)
Unamortized investment tax credits	(3)	(4)
Total deferred income tax liabilities (net) and unamortized investment tax credits	(3,183)	(3,024)
Pepco Holdings LLC | Domestic Tax Authority
Operating Loss Carryforwards [Line Items]
Corporate Alternative Minimum Tax	2
Potomac Electric Power Company
Operating Loss Carryforwards [Line Items]
Plant basis differences	(1,512)	(1,454)
Accrual based contracts	0	0
Derivatives and other financial instruments	0	0
Deferred pension and postretirement obligation	(64)	(70)
Deferred debt refinancing costs	(3)	(3)
Regulatory assets and liabilities	(16)	9
Tax loss carryforward, net of valuation allowances	0	0
Tax credit carryforward	0	0
Corporate Alternative Minimum Tax	2	0
Investment in partnerships	0	0
Deferred Tax Assets, Other	85	88
Deferred income tax liabilities (net)	(1,508)	(1,430)
Unamortized investment tax credits	(1)	(1)
Total deferred income tax liabilities (net) and unamortized investment tax credits	(1,509)	(1,431)
Potomac Electric Power Company | Domestic Tax Authority
Operating Loss Carryforwards [Line Items]
Corporate Alternative Minimum Tax	2
Delmarva Power & Light Company
Operating Loss Carryforwards [Line Items]
Plant basis differences	(975)	(947)
Accrual based contracts	0	0
Derivatives and other financial instruments	0	0
Deferred pension and postretirement obligation	(32)	(35)
Deferred debt refinancing costs	(1)	(2)
Regulatory assets and liabilities	33	45
Tax loss carryforward, net of valuation allowances	16	18
Tax credit carryforward	0	0
Corporate Alternative Minimum Tax	4	2
Investment in partnerships	0	0
Deferred Tax Assets, Other	10	16
Deferred income tax liabilities (net)	(945)	(903)
Unamortized investment tax credits	(1)	(1)
Total deferred income tax liabilities (net) and unamortized investment tax credits	(946)	(904)
Delmarva Power & Light Company | Domestic Tax Authority
Operating Loss Carryforwards [Line Items]
Corporate Alternative Minimum Tax	4
Atlantic City Electric Company
Operating Loss Carryforwards [Line Items]
Plant basis differences	(881)	(850)
Accrual based contracts	0	0
Derivatives and other financial instruments	0	0
Deferred pension and postretirement obligation	0	(2)
Deferred debt refinancing costs	(1)	(1)
Regulatory assets and liabilities	(18)	(4)
Tax loss carryforward, net of valuation allowances	51	52
Tax credit carryforward	0	0
Corporate Alternative Minimum Tax	8	11
Investment in partnerships	0	0
Deferred Tax Assets, Other	27	25
Deferred income tax liabilities (net)	(814)	(769)
Unamortized investment tax credits	(2)	(2)
Total deferred income tax liabilities (net) and unamortized investment tax credits	(816)	$ (771)
Atlantic City Electric Company | Domestic Tax Authority
Operating Loss Carryforwards [Line Items]
Corporate Alternative Minimum Tax	$ 8

Income Taxes - Schedule of Carr

Income Taxes - Schedule of Carryforwards and Corresponding Valuation Allowances (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Operating Loss Carryforwards [Line Items]
Corporate Alternative Minimum Tax	$ 369	$ 264
State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	6,349
Deferred taxes on state tax attributes (net of federal taxes)	369
Valuation allowance on state tax attributes (net of federal taxes)	$ 86
Operating loss carryforwards, expiration date	Dec. 31, 2035
Domestic Tax Authority
Operating Loss Carryforwards [Line Items]
Corporate Alternative Minimum Tax	$ 369
Domestic Tax Authority | General Business Tax Credit Carryforward
Operating Loss Carryforwards [Line Items]
Federal general business credits carryforwards	142
Commonwealth Edison Co
Operating Loss Carryforwards [Line Items]
Corporate Alternative Minimum Tax	47	118
Commonwealth Edison Co | State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	0
Deferred taxes on state tax attributes (net of federal taxes)	0
Valuation allowance on state tax attributes (net of federal taxes)	0
Commonwealth Edison Co | Domestic Tax Authority
Operating Loss Carryforwards [Line Items]
Corporate Alternative Minimum Tax	47
Commonwealth Edison Co | Domestic Tax Authority | General Business Tax Credit Carryforward
Operating Loss Carryforwards [Line Items]
Federal general business credits carryforwards	0
PECO Energy Co
Operating Loss Carryforwards [Line Items]
Corporate Alternative Minimum Tax	166	82
PECO Energy Co | State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	1,711
Deferred taxes on state tax attributes (net of federal taxes)	67
Valuation allowance on state tax attributes (net of federal taxes)	$ 4
Operating loss carryforwards, expiration date	Dec. 31, 2031
PECO Energy Co | Domestic Tax Authority
Operating Loss Carryforwards [Line Items]
Corporate Alternative Minimum Tax	$ 166
PECO Energy Co | Domestic Tax Authority | General Business Tax Credit Carryforward
Operating Loss Carryforwards [Line Items]
Federal general business credits carryforwards	0
Baltimore Gas and Electric Company
Operating Loss Carryforwards [Line Items]
Corporate Alternative Minimum Tax	95	55
Baltimore Gas and Electric Company | State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	1,204
Deferred taxes on state tax attributes (net of federal taxes)	78
Valuation allowance on state tax attributes (net of federal taxes)	$ 0
Operating loss carryforwards, expiration date	Dec. 31, 2033
Baltimore Gas and Electric Company | Domestic Tax Authority
Operating Loss Carryforwards [Line Items]
Corporate Alternative Minimum Tax	$ 95
Baltimore Gas and Electric Company | Domestic Tax Authority | General Business Tax Credit Carryforward
Operating Loss Carryforwards [Line Items]
Federal general business credits carryforwards	0
Pepco Holdings LLC
Operating Loss Carryforwards [Line Items]
Corporate Alternative Minimum Tax	2	0
Pepco Holdings LLC | State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	1,392
Deferred taxes on state tax attributes (net of federal taxes)	97
Valuation allowance on state tax attributes (net of federal taxes)	29
Pepco Holdings LLC | Domestic Tax Authority
Operating Loss Carryforwards [Line Items]
Corporate Alternative Minimum Tax	2
Pepco Holdings LLC | Domestic Tax Authority | General Business Tax Credit Carryforward
Operating Loss Carryforwards [Line Items]
Federal general business credits carryforwards	0
Potomac Electric Power Company
Operating Loss Carryforwards [Line Items]
Corporate Alternative Minimum Tax	2	0
Potomac Electric Power Company | State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	0
Deferred taxes on state tax attributes (net of federal taxes)	0
Valuation allowance on state tax attributes (net of federal taxes)	0
Potomac Electric Power Company | Domestic Tax Authority
Operating Loss Carryforwards [Line Items]
Corporate Alternative Minimum Tax	2
Potomac Electric Power Company | Domestic Tax Authority | General Business Tax Credit Carryforward
Operating Loss Carryforwards [Line Items]
Federal general business credits carryforwards	0
Delmarva Power & Light Company
Operating Loss Carryforwards [Line Items]
Corporate Alternative Minimum Tax	4	2
Delmarva Power & Light Company | State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	670
Deferred taxes on state tax attributes (net of federal taxes)	45
Valuation allowance on state tax attributes (net of federal taxes)	$ 29
Operating loss carryforwards, expiration date	Dec. 31, 2033
Delmarva Power & Light Company | Domestic Tax Authority
Operating Loss Carryforwards [Line Items]
Corporate Alternative Minimum Tax	$ 4
Delmarva Power & Light Company | Domestic Tax Authority | General Business Tax Credit Carryforward
Operating Loss Carryforwards [Line Items]
Federal general business credits carryforwards	0
Atlantic City Electric Company
Operating Loss Carryforwards [Line Items]
Corporate Alternative Minimum Tax	8	$ 11
Atlantic City Electric Company | State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	722
Deferred taxes on state tax attributes (net of federal taxes)	51
Valuation allowance on state tax attributes (net of federal taxes)	$ 0
Operating loss carryforwards, expiration date	Dec. 31, 2031
Atlantic City Electric Company | Domestic Tax Authority
Operating Loss Carryforwards [Line Items]
Corporate Alternative Minimum Tax	$ 8
Atlantic City Electric Company | Domestic Tax Authority | General Business Tax Credit Carryforward
Operating Loss Carryforwards [Line Items]
Federal general business credits carryforwards	$ 0

Income Taxes - Rollforward of U

Income Taxes - Rollforward of Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized Tax Benefits - Beginning Balance	$ 94	$ 148	$ 143
Change to positions that only affect timing	10	(57)	(1)
Increases based on tax positions related to current year	4	3	3
Increases based on tax positions prior to current year	2	1	3
Decreases based on tax positions prior to current year	(14)	(1)	0
Unrecognized tax benefits - Ending Balance	96	94	148
Income taxes receivable, noncurrent	100
Pepco Holdings LLC
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized Tax Benefits - Beginning Balance	51	59	56
Change to positions that only affect timing	10	(9)	1
Increases based on tax positions related to current year	1	1	2
Increases based on tax positions prior to current year	0	0	0
Decreases based on tax positions prior to current year	(14)	0	0
Unrecognized tax benefits - Ending Balance	48	51	59
Income taxes receivable, noncurrent	35
Atlantic City Electric Company
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized Tax Benefits - Beginning Balance	15	17	16
Change to positions that only affect timing	0	(2)	1
Increases based on tax positions related to current year	0	0	0
Increases based on tax positions prior to current year	0	0	0
Decreases based on tax positions prior to current year	(14)	0	0
Unrecognized tax benefits - Ending Balance	1	15	$ 17
Exelon Generation Co L L C
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Income taxes receivable, noncurrent	$ 31	$ 31

Income Taxes - Recognition of U

Income Taxes - Recognition of Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 69	$ 71	$ 90

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($) $ in Millions				3 Months Ended			6 Months Ended	12 Months Ended			84 Months Ended
	Jan. 01, 2031	Aug. 16, 2022	Jul. 08, 2022	Sep. 30, 2023	Sep. 30, 2022	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Jan. 01, 2031
Income Tax Additional Narrative Information [Line Items]
Income tax expense related to separation						$ 148
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount				$ 54		54			$ 54	$ 43
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount										40
Income Tax Credits and Adjustments										15
Tax Credit Carryforward, Valuation Allowance								$ 0
Income Taxes Receivable, Current								0
Taxes Payable									141
Notes Payable, Noncurrent									198
exc:SeparationCashPayment								11
General Business Tax Credit Carryforward
Income Tax Additional Narrative Information [Line Items]
exc:SeparationCashPayment								174
US Treasury (UST) Interest Rate
Income Tax Additional Narrative Information [Line Items]
Change in Enacted Tax Rate, Percent		15%
State and Local Jurisdiction
Income Tax Additional Narrative Information [Line Items]
Increase (Decrease) in Deferred Income Taxes								0	(54)	67
Increase (Decrease) in Income Taxes								0	$ (54)	67
EXCFederal And State
Income Tax Additional Narrative Information [Line Items]
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount						40
Income Tax Credits and Adjustments						17
Total transaction costs taxes relating to the Separation						$ 24
PENNSYLVANIA
Income Tax Additional Narrative Information [Line Items]
Change in Enacted Tax Rate, Percent			9.99%				4.99%		8.99%
Increase (Decrease) in Deferred Income Taxes					$ 390
Increase (Decrease) in Regulatory Assets					428
Increase (Decrease) in Income Taxes					38
PENNSYLVANIA | Forecast
Income Tax Additional Narrative Information [Line Items]
Change in Enacted Tax Rate, Percent											(0.50%)
Atlantic City Electric Company
Income Tax Additional Narrative Information [Line Items]
Tax Credit Carryforward, Valuation Allowance								0
PECO Energy Co
Income Tax Additional Narrative Information [Line Items]
Tax Credit Carryforward, Valuation Allowance								0
Increase (Decrease) in Income Taxes										$ 38
PECO Energy Co | PENNSYLVANIA
Income Tax Additional Narrative Information [Line Items]
Change in Enacted Tax Rate, Percent			9.99%				4.99%		8.99%
Increase (Decrease) in Deferred Income Taxes					390
Increase (Decrease) in Regulatory Assets					428
Increase (Decrease) in Income Taxes					$ 38
PECO Energy Co | PENNSYLVANIA | Forecast
Income Tax Additional Narrative Information [Line Items]
Change in Enacted Tax Rate, Percent	4.99%										(0.50%)
Commonwealth Edison Co
Income Tax Additional Narrative Information [Line Items]
Tax Credit Carryforward, Valuation Allowance								0
Delmarva Power & Light Company
Income Tax Additional Narrative Information [Line Items]
Tax Credit Carryforward, Valuation Allowance								0
Baltimore Gas and Electric Company
Income Tax Additional Narrative Information [Line Items]
Tax Credit Carryforward, Valuation Allowance								0
Potomac Electric Power Company
Income Tax Additional Narrative Information [Line Items]
Tax Credit Carryforward, Valuation Allowance								0
Pepco Holdings LLC
Income Tax Additional Narrative Information [Line Items]
Tax Credit Carryforward, Valuation Allowance								$ 0

Income Taxes - Summary of Inter

Income Taxes - Summary of Interest and Penalties Receivable (Payable) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Income Taxes [Line Items]
Net interest receivable payable related to uncertain tax positions	$ 76	$ 62
Other Accounts Receivable
Income Taxes [Line Items]
Interest Receivable, Current	27	21
Interest Receivable, Noncurrent	49	41
Other Assets
Income Taxes [Line Items]
Other	$ 9
Exelon Generation Co L L C
Income Taxes [Line Items]
Other		$ 5

Income Taxes - Tax Years Open t

Income Taxes - Tax Years Open to Assessment (Details)	12 Months Ended
	Dec. 31, 2024
Domestic Tax Authority
Income Taxes [Line Items]
Open Tax Year	2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023
State and Local Jurisdiction | DISTRICT OF COLUMBIA
Income Taxes [Line Items]
Open Tax Year	2021 2022 2023
State and Local Jurisdiction | ILLINOIS
Income Taxes [Line Items]
Open Tax Year	2012 2013 2014 2015 2016 2017 2018 2019 2021 2022 2023
State and Local Jurisdiction | New Jersey Division of Taxation
Income Taxes [Line Items]
Open Tax Year	2020 2021 2022 2023
State and Local Jurisdiction | New York State Division of Taxation and Finance
Income Taxes [Line Items]
Open Tax Year	2019 2020 2021 2022 2023
State and Local Jurisdiction | PENNSYLVANIA
Income Taxes [Line Items]
Open Tax Year	2021 2022 2023
Delmarva Power & Light Company | Domestic Tax Authority
Income Taxes [Line Items]
Open Tax Year	2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023
Delmarva Power & Light Company | State and Local Jurisdiction | DELAWARE
Income Taxes [Line Items]
Open Tax Year	2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023
Delmarva Power & Light Company | State and Local Jurisdiction | MARYLAND
Income Taxes [Line Items]
Open Tax Year	2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023
Atlantic City Electric Company | Domestic Tax Authority
Income Taxes [Line Items]
Open Tax Year	2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023
Atlantic City Electric Company | State and Local Jurisdiction | New Jersey Division of Taxation
Income Taxes [Line Items]
Open Tax Year	2020 2021 2022 2023
PECO Energy Co | Domestic Tax Authority
Income Taxes [Line Items]
Open Tax Year	2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023
PECO Energy Co | State and Local Jurisdiction | PENNSYLVANIA
Income Taxes [Line Items]
Open Tax Year	2021 2022 2023
Potomac Electric Power Company | Domestic Tax Authority
Income Taxes [Line Items]
Open Tax Year	2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023
Potomac Electric Power Company | State and Local Jurisdiction | DISTRICT OF COLUMBIA
Income Taxes [Line Items]
Open Tax Year	2021 2022 2023
Potomac Electric Power Company | State and Local Jurisdiction | MARYLAND
Income Taxes [Line Items]
Open Tax Year	2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023
Baltimore Gas and Electric Company | Domestic Tax Authority
Income Taxes [Line Items]
Open Tax Year	2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023
Baltimore Gas and Electric Company | State and Local Jurisdiction | MARYLAND
Income Taxes [Line Items]
Open Tax Year	2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023
Pepco Holdings LLC | Domestic Tax Authority
Income Taxes [Line Items]
Open Tax Year	2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023
Pepco Holdings LLC | State and Local Jurisdiction | DISTRICT OF COLUMBIA
Income Taxes [Line Items]
Open Tax Year	2021 2022 2023
Commonwealth Edison Co | Domestic Tax Authority
Income Taxes [Line Items]
Open Tax Year	2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023
Commonwealth Edison Co | State and Local Jurisdiction | ILLINOIS
Income Taxes [Line Items]
Open Tax Year	2012 2013 2014 2015 2016 2017 2018 2019 2021 2022 2023

Income Taxes - Long-Term Margin

Income Taxes - Long-Term Marginal State Income Tax Rate (Details) - State and Local Jurisdiction - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Long-Term Marginal State Income Tax Rate [Line Items]
Increase (Decrease) in Deferred Income Taxes	$ 0	$ (54)	$ 67
Increase (Decrease) in Income Taxes	$ 0	$ (54)	$ 67

Income Taxes - Allocation of Ta

Income Taxes - Allocation of Tax Benefits (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Commonwealth Edison Co
Income Taxes [Line Items]
Allocation Of Federal Tax Benefit Under Tax Sharing Agreement	$ 30	$ 13	$ 1
PECO Energy Co
Income Taxes [Line Items]
Allocation Of Federal Tax Benefit Under Tax Sharing Agreement	15	19	47
Baltimore Gas and Electric Company
Income Taxes [Line Items]
Allocation Of Federal Tax Benefit Under Tax Sharing Agreement	14	0	0
Pepco Holdings LLC
Income Taxes [Line Items]
Allocation Of Federal Tax Benefit Under Tax Sharing Agreement	16	10	28
Potomac Electric Power Company
Income Taxes [Line Items]
Allocation Of Federal Tax Benefit Under Tax Sharing Agreement	9	4	23
Delmarva Power and Light Company [Member]
Income Taxes [Line Items]
Allocation Of Federal Tax Benefit Under Tax Sharing Agreement	5	0	3
Atlantic City Electric Company
Income Taxes [Line Items]
Allocation Of Federal Tax Benefit Under Tax Sharing Agreement	$ 2	$ 2	$ 2

Retirement Benefits- Narrative

Retirement Benefits- Narrative (Details)			3 Months Ended	11 Months Ended	12 Months Ended
	Mar. 02, 2022 USD ($)	Feb. 01, 2022 USD ($)	Mar. 31, 2024 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2024 USD ($) servicePeriod	Dec. 31, 2023 USD ($) servicePeriod	Dec. 31, 2022 USD ($) servicePeriod
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Increase (Decrease) in Obligation, Pension Benefits			$ 98,000,000	$ 921,000,000
Benefit obligation increase (decrease) reflecting actual census data			1,000,000	893,000,000
Accumulated Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), after Tax		$ 1,994,000,000	25,000,000
Regulatory asset increase (decrease) due to updated valuation adjustment			66,000,000	14,000,000
Defined benefit plan, amounts increased (decrease) in regulatory liabilities, before tax			$ 2,000,000	5,000,000
Defined Contribution Plan, Employer Discretionary Contribution Amount					$ 112,000,000	$ 109,000,000	$ 91,000,000
Payment for Pension and Other Postretirement Benefits					180,000,000	129,000,000	616,000,000
Pension Plan, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Accumulated Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), after Tax				(2,631,000,000)	0	0	(2,631,000,000)
Regulatory asset increase (decrease) due to updated valuation adjustment					$ 23,000,000	$ 240,000,000	$ (435,000,000)
Expected return on plan assets					7%	7%	7%
Discount rate					5.19%	5.53%	3.24%
Defined Contribution Plan, Employer Discretionary Contribution Amount					$ 275,000,000
Payment for Pension and Other Postretirement Benefits	$ 33,000,000	$ 207,000,000			$ 126,000,000	$ 75,000,000	$ 570,000,000
Average Remaining Service Period Of Active Participants in Plan | servicePeriod					12.5	12.6	12.5
Pension Plan, Defined Benefit [Member] | Fair Value, Concentration of Risk, All Financial Instruments | Credit Concentration Risk
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Concentration of Risk, Investments					$ 0
Other Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Accumulated Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), after Tax				$ (43,000,000)	0	$ 0	$ (43,000,000)
Regulatory asset increase (decrease) due to updated valuation adjustment					$ (47,000,000)	$ 38,000,000	$ (233,000,000)
Expected return on plan assets					6.50%	6.50%	6.44%
Discount rate					5.17%	5.51%	3.20%
Payment for Pension and Other Postretirement Benefits					$ 54,000,000	$ 54,000,000	$ 42,000,000
Other Postretirement Benefit Plan, Defined Benefit [Member] | Benefit Eligibility Age
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Average Remaining Service Period Of Active Participants in Plan | servicePeriod					7.8	8.1	7.9
Other Postretirement Benefit Plan, Defined Benefit [Member] | Expected Retirement Period
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Average Remaining Service Period Of Active Participants in Plan | servicePeriod					9	9.3	9.1
Change in Assumptions for Defined Benefit Plans [Member] | Pension Plan, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expected return on plan assets					7%
Change in Assumptions for Defined Benefit Plans [Member] | Other Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expected return on plan assets					6.50%
Assets [Member] | Pension Plan, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Actual Asset Returns					1.49%
Assets [Member] | Other Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Actual Asset Returns					8.54%

Retirement Benefits - Summary o

Retirement Benefits - Summary of Changes in Benefit Obligations and Plan Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pension Plan, Defined Benefit [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Net benefit obligation as of the beginning of year	$ 10,988	$ 10,677
Service cost	166	155	$ 236
Interest cost	565	578	439
Defined Benefit Plan, Benefit Obligation, Contributions by Plan Participant	0	0
Actuarial (gain) loss⁽ᵃ⁾	(331)	406
Plan amendments	0	4
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Remeasurement due to Settlement	(22)	(42)
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(821)	(790)
Net benefit obligation as of the end of year	10,545	10,988	10,677
Fair value of net plan assets as of the beginning of year	9,402	9,521
Actual return on plan assets	100	638
Employer contributions	126	75
Defined Benefit Plan, Plan Assets, Contributions by Plan Participant	0	0
Defined Benefit Plan, Plan Assets, Benefits Paid	(821)	(790)
Defined Benefit Plan, Plan Assets, Payment for Settlement	(22)	(42)
Fair value of net plan assets as of the end of year	8,785	9,402	9,521
Other Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Net benefit obligation as of the beginning of year	1,908	1,884
Service cost	27	26	41
Interest cost	96	101	76
Defined Benefit Plan, Benefit Obligation, Contributions by Plan Participant	27	27
Actuarial (gain) loss⁽ᵃ⁾	(32)	55
Plan amendments	0	0
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Remeasurement due to Settlement	0	0
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(189)	(185)
Net benefit obligation as of the end of year	1,837	1,908	1,884
Fair value of net plan assets as of the beginning of year	1,355	1,351
Actual return on plan assets	108	108
Employer contributions	54	54
Defined Benefit Plan, Plan Assets, Contributions by Plan Participant	27	27
Defined Benefit Plan, Plan Assets, Benefits Paid	(189)	(185)
Defined Benefit Plan, Plan Assets, Payment for Settlement	0	0
Fair value of net plan assets as of the end of year	$ 1,355	$ 1,355	$ 1,351

Retirement Benefits - Benefit O

Retirement Benefits - Benefit Obligations and Plan Assets in Balance Sheet (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Pension Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Other noncurrent assets	$ 0	$ 0
Other current liabilities	(15)	(15)
Pension obligations	(1,745)	(1,571)
Non-pension postretirement benefit obligations	0	0
Unfunded status, net (net benefit obligation less plan assets)	(1,760)	(1,586)
Other Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Other noncurrent assets	10	0
Other current liabilities	(20)	(26)
Pension obligations	0	0
Non-pension postretirement benefit obligations	(472)	(527)
Unfunded status, net (net benefit obligation less plan assets)	$ (482)	$ (553)

Retirement Benefits- Projected

Retirement Benefits- Projected Benefit Obligations and Accumulated Benefit Obligations in Excess of Plan Assets (Details) - Pension Plan, Defined Benefit [Member] - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
ABO	$ 10,076	$ 10,376
Fair value of net plan assets	$ 8,785	$ 9,279

Retirement Benefits - Component

Retirement Benefits - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Amortization of:
Net periodic benefit cost	$ (38)	$ (18)	$ 63
Pension Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	166	155	236
Interest cost	565	578	439
Expected return on assets	(736)	(755)	(822)
Amortization of:
Prior service cost (credit)	2	2	2
Actuarial loss (gain)	214	166	295
Settlement and other charges	10	20	0
Net periodic benefit cost	221	166	150
Other Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	27	26	41
Interest cost	96	101	76
Expected return on assets	(84)	(83)	(99)
Amortization of:
Prior service cost (credit)	(8)	(10)	(19)
Actuarial loss (gain)	0	(2)	12
Settlement and other charges	0	0	0
Net periodic benefit cost	$ 31	$ 32	$ 11

Retirement Benefits - Allocated

Retirement Benefits - Allocated Portion of Pension and Postretirement Benefit Plan Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension and non-pension postretirement benefit costs	$ 252	$ 198	$ 164
Pension and other post retirement benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension and non-pension postretirement benefit costs	252	198	161
Commonwealth Edison Co
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension and non-pension postretirement benefit costs	72	26	60
Commonwealth Edison Co | Pension and other post retirement benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension and non-pension postretirement benefit costs	72	26	60
PECO Energy Co
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension and non-pension postretirement benefit costs	(1)	(14)	(9)
PECO Energy Co | Pension and other post retirement benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension and non-pension postretirement benefit costs	(1)	(14)	(9)
Baltimore Gas and Electric Company
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension and non-pension postretirement benefit costs	59	56	44
Baltimore Gas and Electric Company | Pension and other post retirement benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension and non-pension postretirement benefit costs	59	56	44
Pepco Holdings LLC
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension and non-pension postretirement benefit costs	93	99	53
Pepco Holdings LLC | Pension and other post retirement benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension and non-pension postretirement benefit costs	93	99	53
Potomac Electric Power Company
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension and non-pension postretirement benefit costs	32	34	9
Potomac Electric Power Company | Pension and other post retirement benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension and non-pension postretirement benefit costs	32	34	9
Delmarva Power & Light Company
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension and non-pension postretirement benefit costs	15	18	3
Delmarva Power & Light Company | Pension and other post retirement benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension and non-pension postretirement benefit costs	15	18	3
Atlantic City Electric Company
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension and non-pension postretirement benefit costs	12	13	12
Atlantic City Electric Company | Pension and other post retirement benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension and non-pension postretirement benefit costs	$ 12	$ 13	$ 12

Retirement Benefits - Compone_2

Retirement Benefits - Components of Accumulated Other Comprehensive Income and Regulatory Assets (Liabilities) related to Retirement Plans (Details) - USD ($) $ in Millions	3 Months Ended	11 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2022	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Feb. 01, 2022
Defined Benefit Plan Disclosure [Line Items]
Accumulated Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), after Tax	$ 25					$ 1,994
Defined benefit plan, amounts recognized in regulatory assets, before tax	$ 66	$ 14
Pension Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Current year actuarial loss (gain)			$ 305	$ 523	$ (226)
Amortization of actuarial (loss) gain			(214)	(166)	(295)
Accumulated Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), after Tax		(2,631)	0	0	(2,631)
Current year prior service cost			0	4	0
Amortization of prior service (cost) credit			(2)	(2)	(2)
Settlements			(10)	(20)	0
Total recognized in AOCI and regulatory assets (liabilities)			79	339	(3,154)
Defined benefit plan, amounts recognized in OCI, before tax			56	99	(2,719)
Defined benefit plan, amounts recognized in regulatory assets, before tax			23	240	(435)
Other Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Current year actuarial loss (gain)			(56)	30	(271)
Amortization of actuarial (loss) gain			0	2	(12)
Accumulated Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), after Tax		$ (43)	0	0	(43)
Current year prior service cost			0	0	0
Amortization of prior service (cost) credit			8	10	19
Settlements			0	0	0
Total recognized in AOCI and regulatory assets (liabilities)			(48)	42	(307)
Defined benefit plan, amounts recognized in OCI, before tax			(1)	4	(74)
Defined benefit plan, amounts recognized in regulatory assets, before tax			$ (47)	$ 38	$ (233)

Retirement Benefits - Gross Acc

Retirement Benefits - Gross Accumulated Other Comprehensive Loss and Regulatory Assets (Liabilities) not Recognized as Components of Periodic Benefit Cost (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Pension Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Prior service cost (credit)	$ 19	$ 21
Actuarial loss (gain)	4,029	3,948
Total	4,048	3,969
Benefits included in accumulated other comprehensive income	1,028	972
Benefits included in regulatory assets (liabilities)	3,020	2,997
Other Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Prior service cost (credit)	(37)	(45)
Actuarial loss (gain)	(157)	(101)
Total	(194)	(146)
Benefits included in accumulated other comprehensive income	(18)	(17)
Benefits included in regulatory assets (liabilities)	$ (176)	$ (129)

Retirement Benefits - Assumptio

Retirement Benefits - Assumptions Used in Calculations (Details)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pension Plan, Defined Benefit [Member]
Defined Benefit Plan Assumptions Used In Calculations [Line Items]
Discount rate - Benefit Obligation	5.68%	5.19%
Benefit Obligation Investment Crediting Rate	5.69%	5.03%
Discount rate - Net Periodic Benefit Costs	5.19%	5.53%	3.24%
Net Periodic Benefit Cost Investment Crediting Rate	5.03%	5.07%	3.75%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets	7%	7%	7%
Pension Plan, Defined Benefit [Member] | CENG Legacy Benefit Plans [Member] | Minimum
Defined Benefit Plan Assumptions Used In Calculations [Line Items]
Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate Design Changes	5.56%	5.11%
Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate Design Changes	5.11%	5.46%	2.55%
Pension Plan, Defined Benefit [Member] | CENG Legacy Benefit Plans [Member] | Maximum
Defined Benefit Plan Assumptions Used In Calculations [Line Items]
Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate Design Changes	5.76%	5.27%
Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate Design Changes	5.27%	5.60%	3.24%
Other Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plan Assumptions Used In Calculations [Line Items]
Discount rate - Benefit Obligation	5.64%	5.17%
Health care cost trend rate	5%	5%
Ultimate health care cost trend rate	5%	5%	5%
Discount rate - Net Periodic Benefit Costs	5.17%	5.51%	3.20%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets	6.50%	6.50%	6.44%
Other Postretirement Benefit Plan, Defined Benefit [Member] | CENG Legacy Benefit Plans [Member] | Minimum
Defined Benefit Plan Assumptions Used In Calculations [Line Items]
Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate Design Changes	5.60%	5.15%
Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate Design Changes	5.15%	5.49%	2.84%
Other Postretirement Benefit Plan, Defined Benefit [Member] | CENG Legacy Benefit Plans [Member] | Maximum
Defined Benefit Plan Assumptions Used In Calculations [Line Items]
Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate Design Changes	5.64%	5.17%
Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate Design Changes	5.17%	5.51%	3.20%
Pension and other post retirement benefit [Member]
Defined Benefit Plan Assumptions Used In Calculations [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase	3.75%	3.75%	3.75%

Retirement Benefits - Contribut

Retirement Benefits - Contributions made to Pension and Other Postretirement Benefit Plans (Details) - USD ($) $ in Millions			12 Months Ended
	Mar. 02, 2022	Feb. 01, 2022	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Pension and non-pension postretirement benefit contributions			$ 180	$ 129	$ 616
Expected qualified pension plan contributions			275
Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months			16
Defined Other Postretirement Benefit Plan Estimated Future Employer Contributions In Next Fiscal Year			45
Commonwealth Edison Co
Defined Benefit Plan Disclosure [Line Items]
Pension and non-pension postretirement benefit contributions			25	41	184
Expected qualified pension plan contributions			187
Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months			2
Defined Other Postretirement Benefit Plan Estimated Future Employer Contributions In Next Fiscal Year			21
PECO Energy Co
Defined Benefit Plan Disclosure [Line Items]
Pension and non-pension postretirement benefit contributions			4	1	18
Expected qualified pension plan contributions			9
Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months			1
Defined Other Postretirement Benefit Plan Estimated Future Employer Contributions In Next Fiscal Year			1
Baltimore Gas and Electric Company
Defined Benefit Plan Disclosure [Line Items]
Pension and non-pension postretirement benefit contributions			37	19	68
Expected qualified pension plan contributions			26
Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months			1
Defined Other Postretirement Benefit Plan Estimated Future Employer Contributions In Next Fiscal Year			14
Pepco Holdings LLC
Defined Benefit Plan Disclosure [Line Items]
Pension and non-pension postretirement benefit contributions			86	24	78
Expected qualified pension plan contributions			36
Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months			8
Defined Other Postretirement Benefit Plan Estimated Future Employer Contributions In Next Fiscal Year			7
Potomac Electric Power Company
Defined Benefit Plan Disclosure [Line Items]
Pension and non-pension postretirement benefit contributions			9	12	11
Expected qualified pension plan contributions			1
Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months			1
Defined Other Postretirement Benefit Plan Estimated Future Employer Contributions In Next Fiscal Year			6
Delmarva Power & Light Company
Defined Benefit Plan Disclosure [Line Items]
Pension and non-pension postretirement benefit contributions			3	4	1
Expected qualified pension plan contributions			1
Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months			0
Defined Other Postretirement Benefit Plan Estimated Future Employer Contributions In Next Fiscal Year			1
Atlantic City Electric Company
Defined Benefit Plan Disclosure [Line Items]
Pension and non-pension postretirement benefit contributions			9	3	7
Expected qualified pension plan contributions			4
Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months			0
Defined Other Postretirement Benefit Plan Estimated Future Employer Contributions In Next Fiscal Year			1
Pension Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension and non-pension postretirement benefit contributions	$ 33	$ 207	126	75	570
Pension Plan, Defined Benefit [Member] | Commonwealth Edison Co
Defined Benefit Plan Disclosure [Line Items]
Pension and non-pension postretirement benefit contributions			7	24	176
Pension Plan, Defined Benefit [Member] | PECO Energy Co
Defined Benefit Plan Disclosure [Line Items]
Pension and non-pension postretirement benefit contributions			3	1	15
Pension Plan, Defined Benefit [Member] | Baltimore Gas and Electric Company
Defined Benefit Plan Disclosure [Line Items]
Pension and non-pension postretirement benefit contributions			17	0	48
Pension Plan, Defined Benefit [Member] | Pepco Holdings LLC
Defined Benefit Plan Disclosure [Line Items]
Pension and non-pension postretirement benefit contributions			74	8	69
Pension Plan, Defined Benefit [Member] | Potomac Electric Power Company
Defined Benefit Plan Disclosure [Line Items]
Pension and non-pension postretirement benefit contributions			1	1	3
Pension Plan, Defined Benefit [Member] | Delmarva Power & Light Company
Defined Benefit Plan Disclosure [Line Items]
Pension and non-pension postretirement benefit contributions			1	2	1
Pension Plan, Defined Benefit [Member] | Atlantic City Electric Company
Defined Benefit Plan Disclosure [Line Items]
Pension and non-pension postretirement benefit contributions			7	0	7
Other Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension and non-pension postretirement benefit contributions			54	54	42
Other Postretirement Benefit Plan, Defined Benefit [Member] | Commonwealth Edison Co
Defined Benefit Plan Disclosure [Line Items]
Pension and non-pension postretirement benefit contributions			18	17	8
Other Postretirement Benefit Plan, Defined Benefit [Member] | PECO Energy Co
Defined Benefit Plan Disclosure [Line Items]
Pension and non-pension postretirement benefit contributions			1	0	3
Other Postretirement Benefit Plan, Defined Benefit [Member] | Baltimore Gas and Electric Company
Defined Benefit Plan Disclosure [Line Items]
Pension and non-pension postretirement benefit contributions			20	19	20
Other Postretirement Benefit Plan, Defined Benefit [Member] | Pepco Holdings LLC
Defined Benefit Plan Disclosure [Line Items]
Pension and non-pension postretirement benefit contributions			12	16	9
Other Postretirement Benefit Plan, Defined Benefit [Member] | Potomac Electric Power Company
Defined Benefit Plan Disclosure [Line Items]
Pension and non-pension postretirement benefit contributions			8	11	8
Other Postretirement Benefit Plan, Defined Benefit [Member] | Delmarva Power & Light Company
Defined Benefit Plan Disclosure [Line Items]
Pension and non-pension postretirement benefit contributions			2	2	0
Other Postretirement Benefit Plan, Defined Benefit [Member] | Atlantic City Electric Company
Defined Benefit Plan Disclosure [Line Items]
Pension and non-pension postretirement benefit contributions			$ 2	$ 3	$ 0

Retirement Benefits - Estimated

Retirement Benefits - Estimated Future Benefit Payments (Details) $ in Millions	Dec. 31, 2024 USD ($)
Pension Plan, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2025	$ 809
2026	809
2027	821
2028	811
2029	815
2030 through 2034	4,019
Total estimated future benefits payments through 2034	8,084
Other Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2025	156
2026	157
2027	156
2028	155
2029	154
2030 through 2034	746
Total estimated future benefits payments through 2034	$ 1,524

Retirement Benefits - Pension a

Retirement Benefits - Pension and Other Postretirement Benefit Plan Target Asset Allocations (Details)	Dec. 31, 2024	Dec. 31, 2023
Pension Plan, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target asset allocation percentage	100%	100%
Pension Plan, Defined Benefit [Member] | Equity Securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target asset allocation percentage	28%	28%
Pension Plan, Defined Benefit [Member] | Fixed Income Securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target asset allocation percentage	44%	44%
Pension Plan, Defined Benefit [Member] | Alternative Investments [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target asset allocation percentage	28%	28%
Other Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target asset allocation percentage	100%	100%
Other Postretirement Benefit Plan, Defined Benefit [Member] | Equity Securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target asset allocation percentage	44%	44%
Other Postretirement Benefit Plan, Defined Benefit [Member] | Fixed Income Securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target asset allocation percentage	41%	41%
Other Postretirement Benefit Plan, Defined Benefit [Member] | Alternative Investments [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target asset allocation percentage	15%	15%

Retirement Benefits - Fair Valu

Retirement Benefits - Fair Value Measurements of Pension and Postretirement Benefit Plan Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Derivative, Fair Value, Net	$ (21)	$ 51
Derivative, Notional Amount	5,123	3,351
Net liabilities pending transactions excluded	$ 670	388
Minimum
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Repurchase Agreements, Maturities	3
Maximum
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Repurchase Agreements, Maturities	6
Pension Plan, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	$ 8,785	9,402	$ 9,521
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	9,455	9,790
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	2,665	3,071
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	1,807	2,097
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	17	10
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	4,966	4,612
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	205	267
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	205	267
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Cash and Cash Equivalents [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Equity Securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	2,489	2,208
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	1,127	1,513
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	1	1
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Equity Securities [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	1,361	694
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | US Treasury and Government [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	1,532	1,475
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | US Treasury and Government [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	1,333	1,291
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | US Treasury and Government [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	199	184
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | US Treasury and Government [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | US Treasury and Government [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | State and Municipal Debt [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	32	42
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | State and Municipal Debt [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | State and Municipal Debt [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	32	42
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | State and Municipal Debt [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | State and Municipal Debt [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Corporate Debt Securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	1,567	1,801
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	1,551	1,792
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Corporate Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	16	9
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Corporate Debt Securities [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Other Debt Obligations [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	643	867
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Other Debt Obligations [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Other Debt Obligations [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	25	79
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Other Debt Obligations [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Other Debt Obligations [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	618	788
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Debt Securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	3,774	4,185
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	1,333	1,291
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	1,807	2,097
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	16	9
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Debt Securities [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	618	788
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Private Equity Funds [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	1,249	1,166
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Private Equity Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Private Equity Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Private Equity Funds [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Private Equity Funds [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	1,249	1,166
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Hedge Funds [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	464	578
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Hedge Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Hedge Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Hedge Funds [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Hedge Funds [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	464	578
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Real Estate Funds [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	730	760
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Real Estate Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Real Estate Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Real Estate Funds [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Real Estate Funds [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	730	760
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Private Placement [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	544	626
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Private Placement [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Private Placement [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Private Placement [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Pension Plan, Defined Benefit [Member] | Fair Value, Recurring [Member] | Private Placement [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	544	626
Other Postretirement Benefits Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	1,355	1,355	1,351
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	1,355	1,355
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	665	550
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	71	110
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	619	695
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	44	45
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	44	45
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Cash and Cash Equivalents [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Equity Securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	626	586
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	437	315
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	1	1
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Equity Securities [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	188	270
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | US Treasury and Government [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	52	69
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | US Treasury and Government [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	18	15
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | US Treasury and Government [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	34	54
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | US Treasury and Government [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | US Treasury and Government [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | State and Municipal Debt [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	2	7
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | State and Municipal Debt [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | State and Municipal Debt [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	2	7
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | State and Municipal Debt [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | State and Municipal Debt [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Corporate Debt Securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	32	44
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	32	44
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Corporate Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Corporate Debt Securities [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Other Debt Obligations [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	430	385
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Other Debt Obligations [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	166	175
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Other Debt Obligations [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	2	4
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Other Debt Obligations [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Other Debt Obligations [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	262	206
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Debt Securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	516	505
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	184	190
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	70	109
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Debt Securities [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	262	206
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Hedge Funds [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	75	109
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Hedge Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Hedge Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Hedge Funds [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Hedge Funds [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	75	109
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Real Estate Funds [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	78	88
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Real Estate Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Real Estate Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Real Estate Funds [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Real Estate Funds [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	78	88
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Private Placement [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	16	22
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Private Placement [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Private Placement [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Private Placement [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0	0
Other Postretirement Benefits Plan [Member] | Fair Value, Recurring [Member] | Private Placement [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	16	22
Pension and other post retirement benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Derivative, Notional Amount	41	59
Pension and other post retirement benefit [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	17	10	12
Pension and other post retirement benefit [Member] | Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	1	1	0
Pension and other post retirement benefit [Member] | Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	16	9	$ 12
Pension and other post retirement benefit [Member] | Fair Value, Recurring [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	10,810	11,145
Pension and other post retirement benefit [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	3,330	3,621
Pension and other post retirement benefit [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	1,878	2,207
Pension and other post retirement benefit [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	17	10
Pension and other post retirement benefit [Member] | Fair Value, Recurring [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Amount	$ 5,585	$ 5,307

Retirement Benefits - Reconcili

Retirement Benefits - Reconciliation of Level 3 Assets and Liabilities measured at Fair Value for Pension and Other Postretirement Benefit Plans (Details) - Pension and other post retirement benefit [Member] - Fair Value, Inputs, Level 3 [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of net plan assets as of the beginning of year	$ 10	$ 12
Relating to assets still held at the reporting date	(1)	0
Defined Benefit Plan Purchases	2	0
Transfers into (out of) Level 3	6	(2)
Fair value of net plan assets as of the end of year	17	10
Debt Securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of net plan assets as of the beginning of year	9	12
Relating to assets still held at the reporting date	(1)	0
Defined Benefit Plan Purchases	2	0
Transfers into (out of) Level 3	6	(3)
Fair value of net plan assets as of the end of year	16	9
Equity Securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of net plan assets as of the beginning of year	1	0
Relating to assets still held at the reporting date	0	0
Defined Benefit Plan Purchases	0	0
Transfers into (out of) Level 3	0	1
Fair value of net plan assets as of the end of year	$ 1	$ 1

Retirement Benefits - Defined C

Retirement Benefits - Defined Contribution Savings Plan (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Savings plan matching contributions	$ 112	$ 109	$ 91
Commonwealth Edison Co
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Savings plan matching contributions	46	47	39
PECO Energy Co
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Savings plan matching contributions	15	15	13
Baltimore Gas and Electric Company
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Savings plan matching contributions	12	12	11
Pepco Holdings LLC
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Savings plan matching contributions	19	16	14
Potomac Electric Power Company
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Savings plan matching contributions	5	4	4
Delmarva Power & Light Company
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Savings plan matching contributions	5	3	3
Atlantic City Electric Company
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Savings plan matching contributions	$ 3	$ 2	$ 2

Derivative Financial Instrume_3

Derivative Financial Instruments - Narrative (Details) - USD ($) $ in Millions	1 Months Ended
	Feb. 29, 2024	Dec. 31, 2024	Mar. 31, 2024	Dec. 31, 2023
Derivative [Line Items]
Derivative, Notional Amount		$ 5,123		$ 3,351
Accumulated other comprehensive loss, net		(720)		(726)
Corporate, Non-Segment
Derivative [Line Items]
Accumulated other comprehensive loss, net		(720)		(726)
Corporate, Non-Segment | Notes Payable to Banks
Derivative [Line Items]
Derivative, Notional Amount	$ 1,700
Derivative, Cash Received on Hedge	30
PECO Energy Co
Derivative [Line Items]
Incremental collateral for loss of investment grade credit rating		51
Baltimore Gas and Electric Company
Derivative [Line Items]
Incremental collateral for loss of investment grade credit rating		91
Delmarva Power & Light Company
Derivative [Line Items]
Incremental collateral for loss of investment grade credit rating		10
InterestRateSwapNotional5YR | Cash Flow Hedging
Derivative [Line Items]
Derivative, Notional Amount		657		655
InterestRateSwapNotional5YR | Cash Flow Hedging | Corporate, Non-Segment
Derivative [Line Items]
Derivative, Notional Amount		55
InterestRateSwapNotional10YR | Cash Flow Hedging
Derivative [Line Items]
Derivative, Notional Amount		658		655
InterestRateSwapNotional10YR | Cash Flow Hedging | Corporate, Non-Segment
Derivative [Line Items]
Derivative, Notional Amount		55
Interest Rate Swap | Cash Flow Hedging
Derivative [Line Items]
Derivative, Notional Amount		1,315		1,310
Accumulated other comprehensive loss, net		19
Accumulated Other Comprehensive Income Gain, Net of Tax				10
Interest Rate Swap | Cash Flow Hedging | Corporate, Non-Segment
Derivative [Line Items]
Derivative, Notional Amount		110
InterestRateSwapTerminated | Cash Flow Hedging
Derivative [Line Items]
Derivative, Notional Amount	1,300
Accumulated other comprehensive loss, net	$ 33		$ 23
Interest Rate Cap | Not Designated as Hedging Instrument
Derivative [Line Items]
Derivative, Notional Amount				$ 1,000
Constant Maturity Treasury Interest Rate Swaps | Not Designated as Hedging Instrument, Economic Hedge
Derivative [Line Items]
Derivative Liability		22
Constant Maturity Treasury Interest Rate Swaps | Not Designated as Hedging Instrument, Economic Hedge | 2023
Derivative [Line Items]
Derivative, Notional Amount		$ 4,875

Derivative Financial Instrume_4

Derivative Financial Instruments - Summary of Derivative Hedging Instruments (Details) - MWh MWh in Millions	1 Months Ended	3 Months Ended
	Jun. 30, 2012	Dec. 31, 2024
Commonwealth Edison Co
Derivative [Line Items]
Long-term Purchase Commitment, Minimum Energy Volume Required	1.3
PECO Energy Co
Derivative [Line Items]
Estimated Percent of Gas Purchases Being Hedged		10%
Delmarva Power & Light Company
Derivative [Line Items]
Estimated Percent of Gas Purchases Being Hedged		50%

Derivative Financial Instrume_5

Derivative Financial Instruments - Summary of Interest Rate Hedge Balances (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Derivative [Line Items]
Mark-to-market derivative liabilities (current liabilities)	$ (29)	$ (74)
Mark-to-market derivative liabilities (noncurrent liabilities)	(103)	(106)
Total mark-to-market derivative net assets	(21)	51
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Other current assets		11
Interest Rate Contract
Derivative [Line Items]
Other current assets	14	12
Other deferred debits (noncurrent assets)	12
Total derivative assets	26	12
Mark-to-market derivative liabilities (current liabilities)	(1)	(46)
Total mark-to-market derivative liabilities	(1)	(46)
Total mark-to-market derivative net assets	25	(34)
Interest Rate Contract | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Other current assets	14
Other deferred debits (noncurrent assets)	12
Total derivative assets	26	11
Mark-to-market derivative liabilities (current liabilities)	(1)	(24)
Total mark-to-market derivative liabilities	(1)	(24)
Total mark-to-market derivative net assets	25	(13)
Interest Rate Contract | Not Designated as Hedging Instrument
Derivative [Line Items]
Other current assets	0	1
Other deferred debits (noncurrent assets)	0
Total derivative assets	0	1
Mark-to-market derivative liabilities (current liabilities)	0	(22)
Total mark-to-market derivative liabilities	0	(22)
Total mark-to-market derivative net assets	$ 0	$ (21)

Derivative Financial Instrume_6

Derivative Financial Instruments - Summary of Notional Amounts of Outstanding Derivative Positions (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Derivative [Line Items]
Derivative, Notional Amount	$ 5,123	$ 3,351
InterestRateSwapNotional5YR | Cash Flow Hedging
Derivative [Line Items]
Derivative, Notional Amount	657	655
InterestRateSwapNotional10YR | Cash Flow Hedging
Derivative [Line Items]
Derivative, Notional Amount	658	655
Interest Rate Swap | Cash Flow Hedging
Derivative [Line Items]
Derivative, Notional Amount	$ 1,315	$ 1,310

Derivative Financial Instrume_7

Derivative Financial Instruments -Summary of Derivatives Not Designated as Hedging Instruments (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Derivative [Line Items]
Derivative, Notional Amount	$ 5,123	$ 3,351

Derivative Financial Instrume_8

Derivative Financial Instruments - Summary of Economic Hedges (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Derivative [Line Items]
Net fair value changes related to derivatives	$ 0	$ (22)	$ 53
Interest Rate Cap | Not Designated as Hedging Instrument, Economic Hedge
Derivative [Line Items]
Net fair value changes related to derivatives	0	(20)
Interest Rate Cap | Electric Operating Revenues [Member] | Not Designated as Hedging Instrument, Economic Hedge
Derivative [Line Items]
Net fair value changes related to derivatives	0	(20)
Interest Rate Cap | Interest Expense | Not Designated as Hedging Instrument, Economic Hedge
Derivative [Line Items]
Net fair value changes related to derivatives	$ 0	$ 0

Derivative Financial Instrume_9

Derivative Financial Instruments - Summary of Counterparty Collateral (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Derivative [Line Items]
Other current liabilities	$ 512	$ 519
Commonwealth Edison Co
Derivative [Line Items]
Other current liabilities	270	219
PECO Energy Co
Derivative [Line Items]
Other current liabilities	80	59
Baltimore Gas and Electric Company
Derivative [Line Items]
Other current liabilities	39	32
Potomac Electric Power Company
Derivative [Line Items]
Other current liabilities	51	61
Delmarva Power & Light Company
Derivative [Line Items]
Other current liabilities	22	21
Atlantic City Electric Company
Derivative [Line Items]
Other current liabilities	10	12
External Counterparties | Commodity Contract | Collateral
Derivative [Line Items]
Other current liabilities	181	148
External Counterparties | Commodity Contract | Collateral | Commonwealth Edison Co
Derivative [Line Items]
Other current liabilities	176	146
External Counterparties | Commodity Contract | Collateral | PECO Energy Co
Derivative [Line Items]
Other current liabilities	0	0
External Counterparties | Commodity Contract | Collateral | Baltimore Gas and Electric Company
Derivative [Line Items]
Other current liabilities	1	1
External Counterparties | Commodity Contract | Collateral | Pepco Holdings LLC
Derivative [Line Items]
Other current liabilities	4	1
External Counterparties | Commodity Contract | Collateral | Potomac Electric Power Company
Derivative [Line Items]
Other current liabilities	1	1
External Counterparties | Commodity Contract | Collateral | Delmarva Power & Light Company
Derivative [Line Items]
Other current liabilities	2	0
External Counterparties | Commodity Contract | Collateral | Atlantic City Electric Company
Derivative [Line Items]
Other current liabilities	$ 0	$ 0

Debt and Credit Agreements - Na

Debt and Credit Agreements - Narrative (Details) - USD ($) $ in Millions			12 Months Ended
	Aug. 29, 2024	May 09, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Mar. 14, 2024	Mar. 23, 2017
Debt Instrument [Line Items]
Long-term debt, current maturities			$ (1,453)	$ (1,403)
Retirement of long-term debt			$ 1,557	1,713	$ 2,073
Maximum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			1.275%
Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.275%
Senior unsecured notes
Debt Instrument [Line Items]
Principal balance			$ 244
Retirement of long-term debt			215
Gain on extinguishment of debt			$ 28
Prime Rate | Maximum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			0.275%
Corporate, Non-Segment
Debt Instrument [Line Items]
Long-term debt, current maturities			$ (807)	(500)
Retirement of long-term debt			$ 715	850	1,150
Corporate, Non-Segment | Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.275%		1.275%
Credit facility, amount outstanding during period			$ 0
Corporate, Non-Segment | Prime Rate | Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			0.275%
Corporate, Non-Segment | ShortTermDebt03232017
Debt Instrument [Line Items]
Short-term loans							$ 500
Corporate, Non-Segment | ShortTermDebt2Amend03142024
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			1.05%
Short-term loans						$ 350
Corporate, Non-Segment | ShortTermDebt7Amend03142024
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			1.05%
Short-term loans						$ 150
Commonwealth Edison Co
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			1%
Long-term debt, current maturities			$ 0	(250)
Retirement of long-term debt			250	0	0
Commonwealth Edison Co | Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1%
Credit facility, amount outstanding during period			$ 0
Commonwealth Edison Co | Prime Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			0%
Commonwealth Edison Co | Prime Rate | Maximum | External Credit Rating, Non Investment Grade
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			0.65%
Commonwealth Edison Co | Secured Overnight Financing Rate (SOFR) | Maximum | External Credit Rating, Non Investment Grade
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			1.65%
Commonwealth Edison Co | ShortTermDebtSOFRplus100May72024
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		1%
Short-term loans		$ 400
PECO Energy Co
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			0.90%
Long-term debt, current maturities			$ (350)	0
Retirement of long-term debt			0	50	350
PECO Energy Co | Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	0.90%
Credit facility, amount outstanding during period			$ 0
PECO Energy Co | Prime Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			0%
PECO Energy Co | Prime Rate | Maximum | External Credit Rating, Non Investment Grade
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			0.65%
PECO Energy Co | Secured Overnight Financing Rate (SOFR) | Maximum | External Credit Rating, Non Investment Grade
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			1.65%
Baltimore Gas and Electric Company
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			0.90%
Long-term debt, current maturities			$ 0	0
Retirement of long-term debt			0	300	250
Baltimore Gas and Electric Company | Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	0.90%
Credit facility, amount outstanding during period			$ 0
Baltimore Gas and Electric Company | Prime Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			0%
Baltimore Gas and Electric Company | Prime Rate | Maximum | External Credit Rating, Non Investment Grade
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			0.65%
Baltimore Gas and Electric Company | Secured Overnight Financing Rate (SOFR) | Maximum | External Credit Rating, Non Investment Grade
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			1.65%
Potomac Electric Power Company
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			1.075%
Retirement of long-term debt			$ 400	0	310
Potomac Electric Power Company | Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.075%
Credit facility, amount outstanding during period			$ 0
Potomac Electric Power Company | Prime Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			0.075%
Potomac Electric Power Company | Prime Rate | Maximum | External Credit Rating, Non Investment Grade
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			0.65%
Potomac Electric Power Company | Secured Overnight Financing Rate (SOFR) | Maximum | External Credit Rating, Non Investment Grade
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			1.65%
Delmarva Power & Light Company
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			1%
Long-term debt, current maturities			$ (46)	(79)
Retirement of long-term debt			33	500	0
Delmarva Power & Light Company | Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1%
Credit facility, amount outstanding during period			$ 0
Delmarva Power & Light Company | Prime Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			0%
Delmarva Power & Light Company | Prime Rate | Maximum | External Credit Rating, Non Investment Grade
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			0.65%
Delmarva Power & Light Company | Secured Overnight Financing Rate (SOFR) | Maximum | External Credit Rating, Non Investment Grade
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			1.65%
Atlantic City Electric Company
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			1%
Retirement of long-term debt			$ 150	0	0
Atlantic City Electric Company | Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1%
Credit facility, amount outstanding during period			$ 0
Atlantic City Electric Company | Prime Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			0%
Atlantic City Electric Company | Prime Rate | Maximum | External Credit Rating, Non Investment Grade
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			0.65%
Atlantic City Electric Company | Secured Overnight Financing Rate (SOFR) | Maximum | External Credit Rating, Non Investment Grade
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			1.65%
Pepco Holdings LLC
Debt Instrument [Line Items]
Retirement of long-term debt			$ 583	$ 500	$ 310

Debt and Credit Agreements - Co

Debt and Credit Agreements - Commercial Paper Borrowings (Details) - USD ($) $ in Millions	Jan. 31, 2025	Dec. 31, 2024	Aug. 29, 2024	Dec. 31, 2023
Commercial Paper
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity		$ 4,000		$ 4,000
Commercial paper		$ 1,359		$ 1,624
Average interest rate on commercial paper borrowings		4.66%		5.58%
Revolving Credit Facility
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity		$ 4,000	$ 900
Line of credit facility, remaining borrowing capacity		3,951
Corporate, Non-Segment | Commercial Paper
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity		900		$ 900
Commercial paper		426		527
Corporate, Non-Segment | Revolving Credit Facility
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity		900	900
Line of credit facility, remaining borrowing capacity		471
Commonwealth Edison Co | Commercial Paper
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity		1,000		1,000
Commercial paper		$ 36		$ 202
Average interest rate on commercial paper borrowings		4.55%		5.53%
Commonwealth Edison Co | Revolving Credit Facility
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity		$ 1,000	1,000
Line of credit facility, remaining borrowing capacity		985
PECO Energy Co | Commercial Paper
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity		600		$ 600
Commercial paper		$ 192		$ 165
Average interest rate on commercial paper borrowings		4.65%		5.57%
PECO Energy Co | Revolving Credit Facility
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity		$ 600	600
Line of credit facility, remaining borrowing capacity		596
Baltimore Gas and Electric Company | Commercial Paper
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity		600		$ 600
Commercial paper		$ 175		$ 336
Average interest rate on commercial paper borrowings		4.61%		5.59%
Baltimore Gas and Electric Company | Revolving Credit Facility
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity		$ 600	600
Line of credit facility, remaining borrowing capacity		575
Pepco Holdings LLC | Commercial Paper
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity		900		$ 900
Commercial paper		$ 530		$ 394
Average interest rate on commercial paper borrowings		4.70%		5.60%
Pepco Holdings LLC | Revolving Credit Facility
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity		$ 900
Line of credit facility, remaining borrowing capacity		898
Pepco Holdings LLC | Revolving Credit Facility | Subsequent Event
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity	$ 900
Potomac Electric Power Company | Commercial Paper
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity		300		$ 300
Commercial paper		$ 200		$ 132
Average interest rate on commercial paper borrowings		4.69%		5.59%
Line of credit facility, remaining borrowing capacity		$ 500
Potomac Electric Power Company | Commercial Paper | Subsequent Event
Short-term Debt [Line Items]
Line of credit facility, remaining borrowing capacity	340
Potomac Electric Power Company | Revolving Credit Facility
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity		300	300
Line of credit facility, remaining borrowing capacity		298
Delmarva Power & Light Company | Commercial Paper
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity		300		$ 300
Commercial paper		$ 144		$ 63
Average interest rate on commercial paper borrowings		4.74%		5.60%
Line of credit facility, remaining borrowing capacity		$ 500
Delmarva Power & Light Company | Commercial Paper | Subsequent Event
Short-term Debt [Line Items]
Line of credit facility, remaining borrowing capacity	$ 260
Delmarva Power & Light Company | Revolving Credit Facility
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity		300	300
Line of credit facility, remaining borrowing capacity		300
Atlantic City Electric Company | Commercial Paper
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity		300		$ 300
Commercial paper		$ 186		$ 199
Average interest rate on commercial paper borrowings		4.67%		5.60%
Line of credit facility, remaining borrowing capacity		$ 350
Atlantic City Electric Company | Revolving Credit Facility
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity		300	$ 300
Line of credit facility, remaining borrowing capacity		$ 300

Debt and Credit Agreements - Su

Debt and Credit Agreements - Summary of Bank Commitments, Credit Facility Borrowings and Available Capacity (Details) - Revolving Credit Facility - USD ($) $ in Millions	Dec. 31, 2024	Aug. 29, 2024
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity	$ 4,000	$ 900
Long-term line of credit/facility draws	0
Outstanding letters of credit	49
Actual available capacity	3,951
To support additional commercial paper	2,592
Corporate, Non-Segment
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity	900	900
Outstanding letters of credit	3
Actual available capacity	471
Commonwealth Edison Co
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity	1,000	1,000
Long-term line of credit/facility draws	0
Outstanding letters of credit	15
Actual available capacity	985
To support additional commercial paper	949
PECO Energy Co
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity	600	600
Long-term line of credit/facility draws	0
Outstanding letters of credit	4
Actual available capacity	596
To support additional commercial paper	404
Baltimore Gas and Electric Company
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity	600	600
Long-term line of credit/facility draws	0
Outstanding letters of credit	25
Actual available capacity	575
To support additional commercial paper	400
Pepco Holdings LLC
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity	900
Long-term line of credit/facility draws	0
Outstanding letters of credit	2
Actual available capacity	898
To support additional commercial paper	368
Potomac Electric Power Company
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity	300	300
Long-term line of credit/facility draws	0
Outstanding letters of credit	2
Actual available capacity	298
To support additional commercial paper	98
Delmarva Power & Light Company
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity	300	300
Long-term line of credit/facility draws	0
Outstanding letters of credit	0
Actual available capacity	300
To support additional commercial paper	156
Atlantic City Electric Company
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity	300	$ 300
Long-term line of credit/facility draws	0
Outstanding letters of credit	0
Actual available capacity	300
To support additional commercial paper	$ 114

Debt and Credit Agreements - _2

Debt and Credit Agreements - Summary of Credit Facility Agreements at Minority and Community Banks (Details) - Community and Minority Facilities - Community and Minority Facilities - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Short-term Debt [Line Items]
Line of credit facility, current borrowing capacity	$ 140	$ 140
Outstanding letters of credit	5	10
Commonwealth Edison Co
Short-term Debt [Line Items]
Line of credit facility, current borrowing capacity	40	40
Outstanding letters of credit	3	7
PECO Energy Co
Short-term Debt [Line Items]
Line of credit facility, current borrowing capacity	40	40
Outstanding letters of credit	0	1
Baltimore Gas and Electric Company
Short-term Debt [Line Items]
Line of credit facility, current borrowing capacity	15	15
Outstanding letters of credit	2	2
Pepco Holdings LLC
Short-term Debt [Line Items]
Line of credit facility, current borrowing capacity	45	45
Outstanding letters of credit	0	0
Potomac Electric Power Company
Short-term Debt [Line Items]
Line of credit facility, current borrowing capacity	15	15
Outstanding letters of credit	0	0
Delmarva Power & Light Company
Short-term Debt [Line Items]
Line of credit facility, current borrowing capacity	15	15
Outstanding letters of credit	0	0
Atlantic City Electric Company
Short-term Debt [Line Items]
Line of credit facility, current borrowing capacity	15	15
Outstanding letters of credit	$ 0	$ 0

Debt and Credit Agreements - _3

Debt and Credit Agreements - Summary of Revolving Credit Agreements (Details) - USD ($) $ in Millions		12 Months Ended
	Aug. 29, 2024	Dec. 31, 2024
Commonwealth Edison Co
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate		1%
PECO Energy Co
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate		0.90%
Baltimore Gas and Electric Company
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate		0.90%
Potomac Electric Power Company
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate		1.075%
Delmarva Power & Light Company
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate		1%
Atlantic City Electric Company
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate		1%
Revolving Credit Facility
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	$ 900	$ 4,000
Debt instrument, basis spread on variable rate	1.275%
Revolving Credit Facility | Commonwealth Edison Co
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	$ 1,000	1,000
Debt instrument, basis spread on variable rate	1%
Revolving Credit Facility | PECO Energy Co
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	$ 600	600
Debt instrument, basis spread on variable rate	0.90%
Revolving Credit Facility | Baltimore Gas and Electric Company
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	$ 600	600
Debt instrument, basis spread on variable rate	0.90%
Revolving Credit Facility | Potomac Electric Power Company
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	$ 300	300
Debt instrument, basis spread on variable rate	1.075%
Revolving Credit Facility | Delmarva Power & Light Company
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	$ 300	300
Debt instrument, basis spread on variable rate	1%
Revolving Credit Facility | Atlantic City Electric Company
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	$ 300	300
Debt instrument, basis spread on variable rate	1%
Corporate, Non-Segment | Revolving Credit Facility
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	$ 900	$ 900
Debt instrument, basis spread on variable rate	1.275%	1.275%

Debt and Credit Agreements - _4

Debt and Credit Agreements - Summary of Basis Spread (Details)	12 Months Ended
	Dec. 31, 2024
Minimum
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate	0.90%
Maximum
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate	1.275%
Prime Rate | Minimum
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate	0%
Prime Rate | Maximum
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate	0.275%
Commonwealth Edison Co
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate	1%
Commonwealth Edison Co | Prime Rate
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate	0%
PECO Energy Co
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate	0.90%
PECO Energy Co | Prime Rate
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate	0%
Baltimore Gas and Electric Company
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate	0.90%
Baltimore Gas and Electric Company | Prime Rate
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate	0%
Potomac Electric Power Company
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate	1.075%
Potomac Electric Power Company | Prime Rate
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate	0.075%
Delmarva Power & Light Company
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate	1%
Delmarva Power & Light Company | Prime Rate
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate	0%
Atlantic City Electric Company
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate	1%
Atlantic City Electric Company | Prime Rate
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate	0%

Debt and Credit Agreements - _5

Debt and Credit Agreements - Summary of Outstanding Long-term Debt (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Long-term debt, gross	$ 44,278	$ 40,889
Unamortized debt discount and premium, net	(94)	(80)
Unamortized debt issuance costs	(326)	(296)
Fair value adjustment	542	582
Long-term debt, current maturities	(1,453)	(1,403)
Corporate, Non-Segment
Debt Instrument [Line Items]
Long-term debt, gross	12,095	11,139
Unamortized debt discount and premium, net	24	13
Unamortized debt issuance costs	(71)	(65)
Fair value adjustment	141	152
Long-term debt, current maturities	(807)	(500)
Long-term debt	11,334	10,713
First Mortgage Bonds
Debt Instrument [Line Items]
Long-term debt, gross	$ 26,451	24,776
First Mortgage Bonds | Minimum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	1.05%
Long-term debt, maturity date	Jul. 01, 2025
First Mortgage Bonds | Maximum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	7.90%
Long-term debt, maturity date	Sep. 15, 2054
Senior unsecured notes
Debt Instrument [Line Items]
Long-term debt, gross	$ 12,280	10,824
Senior unsecured notes | Corporate, Non-Segment
Debt Instrument [Line Items]
Long-term debt, gross	$ 12,095	10,639
Senior unsecured notes | Minimum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	2.75%
Long-term debt, maturity date	Jun. 15, 2025
Senior unsecured notes | Minimum | Corporate, Non-Segment
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	2.75%
Long-term debt, maturity date	Jun. 15, 2025
Senior unsecured notes | Maximum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	7.60%
Senior unsecured notes | Maximum | Corporate, Non-Segment
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	7.60%
Long-term debt, maturity date	Mar. 15, 2053
Unsecured notes
Debt Instrument [Line Items]
Long-term debt, gross	$ 5,450	4,650
Unsecured notes | Minimum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	2.25%
Long-term debt, maturity date	Aug. 15, 2026
Unsecured notes | Maximum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	6.35%
Long-term debt, maturity date	Jun. 01, 2054
Notes payable and other
Debt Instrument [Line Items]
Long-term debt, gross	$ 83	84
Notes payable and other | Minimum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	1.64%
Long-term debt, maturity date	Feb. 10, 2025
Notes payable and other | Maximum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	7.49%
Long-term debt, maturity date	May 01, 2053
Long-term software licensing agreement
Debt Instrument [Line Items]
Long-term debt, gross	$ 4	12
Long-term software licensing agreement | Minimum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	2.30%
Long-term debt, maturity date	Dec. 01, 2025
Long-term software licensing agreement | Maximum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	2.30%
Long-term debt, maturity date	Dec. 01, 2025
Unsecured tax-exempt bonds
Debt Instrument [Line Items]
Long-term debt, gross	$ 0	33
Unsecured tax-exempt bonds | Minimum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	4.15%
Unsecured tax-exempt bonds | Maximum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	4.20%
Medium-terms notes (unsecured)
Debt Instrument [Line Items]
Long-term debt, gross	$ 10	10
Medium-terms notes (unsecured) | Maximum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	7.72%
Long-term debt, maturity date	Feb. 01, 2027
Loan agreements
Debt Instrument [Line Items]
Long-term debt, gross	$ 0	500
Loan agreements | Corporate, Non-Segment
Debt Instrument [Line Items]
Long-term debt, gross	$ 0	$ 500
Loan agreements | Maximum
Debt Instrument [Line Items]
Long-term debt, maturity date		Apr. 08, 2024
Loan agreements | Maximum | Corporate, Non-Segment
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	6.23%
Long-term debt, maturity date		Apr. 08, 2024
ComEd Financing III Affiliate | Long-term debt to financing trusts
Debt Instrument [Line Items]
Long-term debt	$ 206	$ 206
ComEd Financing III Affiliate | Long-term debt to financing trusts | Maximum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	6.35%
Long-term debt, maturity date	Mar. 15, 2033
PECO Trust III Affiliate | Long-term debt to financing trusts
Debt Instrument [Line Items]
Long-term debt	$ 81	81
PECO Trust III Affiliate | Long-term debt to financing trusts | Minimum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	7.38%
PECO Trust III Affiliate | Long-term debt to financing trusts | Maximum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	9.50%
Long-term debt, maturity date	Apr. 06, 2028
PECO Trust IV Affiliate | Long-term debt to financing trusts
Debt Instrument [Line Items]
Long-term debt	$ 103	103
PECO Trust IV Affiliate | Long-term debt to financing trusts | Maximum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	5.75%
Long-term debt, maturity date	Jun. 15, 2033
Related Party | Long-term debt to financing trusts
Debt Instrument [Line Items]
Long-term debt	$ 390	390
Nonrelated Party
Debt Instrument [Line Items]
Long-term debt	42,947	39,692
Commonwealth Edison Co
Debt Instrument [Line Items]
Long-term debt, gross	12,162	11,611
Unamortized debt discount and premium, net	(31)	(28)
Unamortized debt issuance costs	(101)	(97)
Long-term debt, current maturities	0	(250)
Long-term debt	12,030	11,236
Commonwealth Edison Co | First Mortgage Bonds
Debt Instrument [Line Items]
Long-term debt, gross	$ 12,154	11,603
Commonwealth Edison Co | First Mortgage Bonds | Minimum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	2.20%
Long-term debt, maturity date	Jun. 15, 2026
Commonwealth Edison Co | First Mortgage Bonds | Maximum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	6.45%
Long-term debt, maturity date	Jun. 01, 2054
Commonwealth Edison Co | Notes payable and other
Debt Instrument [Line Items]
Total finance lease liabilities	$ 8	8
Commonwealth Edison Co | Notes payable and other | Maximum
Debt Instrument [Line Items]
Long-term debt, maturity date	May 01, 2053
Lessee, finance lease, discount rate	7.49%
Commonwealth Edison Co | ComEd Financing III Affiliate
Debt Instrument [Line Items]
Unamortized debt issuance costs	$ 0	(1)
Commonwealth Edison Co | ComEd Financing III Affiliate | Long-term debt to financing trusts
Debt Instrument [Line Items]
Long-term debt		206
Commonwealth Edison Co | ComEd Financing III Affiliate | Long-term debt to financing trusts | Maximum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	6.35%
Commonwealth Edison Co | Related Party
Debt Instrument [Line Items]
Long-term debt	$ 206	205
Commonwealth Edison Co | Related Party | Long-term debt to financing trusts
Debt Instrument [Line Items]
Long-term debt	206	206
Commonwealth Edison Co | Nonrelated Party
Debt Instrument [Line Items]
Long-term debt	12,030	11,236
PECO Energy Co
Debt Instrument [Line Items]
Long-term debt, gross	5,775	5,200
Unamortized debt discount and premium, net	(25)	(24)
Unamortized debt issuance costs	(46)	(42)
Long-term debt, current maturities	(350)	0
Long-term debt	5,354	5,134
PECO Energy Co | First Mortgage Bonds
Debt Instrument [Line Items]
Long-term debt, gross	$ 5,775	5,200
PECO Energy Co | First Mortgage Bonds | Minimum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	2.80%
Long-term debt, maturity date	Oct. 15, 2025
PECO Energy Co | First Mortgage Bonds | Maximum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	5.95%
Long-term debt, maturity date	Sep. 15, 2054
PECO Energy Co | PECO Trust III Affiliate | Long-term debt to financing trusts
Debt Instrument [Line Items]
Long-term debt	$ 81	81
PECO Energy Co | PECO Trust III Affiliate | Long-term debt to financing trusts | Minimum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	7.38%
PECO Energy Co | PECO Trust III Affiliate | Long-term debt to financing trusts | Maximum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	9.50%
Long-term debt, maturity date	Apr. 06, 2028
PECO Energy Co | PECO Trust IV Affiliate | Long-term debt to financing trusts
Debt Instrument [Line Items]
Long-term debt	$ 103	103
PECO Energy Co | PECO Trust IV Affiliate | Long-term debt to financing trusts | Maximum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	5.75%
Long-term debt, maturity date	Jun. 15, 2033
PECO Energy Co | Related Party
Debt Instrument [Line Items]
Long-term debt	$ 184	184
PECO Energy Co | Nonrelated Party
Debt Instrument [Line Items]
Long-term debt	5,354	5,134
Baltimore Gas and Electric Company
Debt Instrument [Line Items]
Long-term debt, gross	5,450	4,650
Unamortized debt discount and premium, net	(13)	(12)
Unamortized debt issuance costs	(42)	(36)
Long-term debt, current maturities	0	0
Long-term debt	5,395	4,602
Baltimore Gas and Electric Company | Unsecured notes
Debt Instrument [Line Items]
Long-term debt, gross	$ 5,450	4,650
Baltimore Gas and Electric Company | Unsecured notes | Minimum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	2.25%
Long-term debt, maturity date	Aug. 15, 2026
Baltimore Gas and Electric Company | Unsecured notes | Maximum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	6.35%
Long-term debt, maturity date	Jun. 01, 2054
Pepco Holdings LLC
Debt Instrument [Line Items]
Long-term debt, gross	$ 8,792	8,274
Total finance lease liabilities	75	74
Unamortized debt discount and premium, net	(2)	0
Unamortized debt issuance costs	(66)	(55)
Fair value adjustment	400	429
Long-term debt due within one year	(290)	(644)
Long-term debt	8,834	8,004
Pepco Holdings LLC | First Mortgage Bonds
Debt Instrument [Line Items]
Long-term debt, gross	$ 8,522	7,972
Pepco Holdings LLC | First Mortgage Bonds | Minimum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	1.05%
Long-term debt, maturity date	Jul. 01, 2025
Pepco Holdings LLC | First Mortgage Bonds | Maximum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	7.90%
Long-term debt, maturity date	Mar. 20, 2054
Pepco Holdings LLC | Senior unsecured notes
Debt Instrument [Line Items]
Long-term debt, gross	$ 185	185
Pepco Holdings LLC | Senior unsecured notes | Maximum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	7.45%
Pepco Holdings LLC | Finance Leases
Debt Instrument [Line Items]
Total finance lease liabilities	$ 75	74
Pepco Holdings LLC | Finance Leases | Minimum
Debt Instrument [Line Items]
Long-term debt, maturity date	Feb. 10, 2025
Pepco Holdings LLC | Finance Leases | Maximum
Debt Instrument [Line Items]
Long-term debt, maturity date	Oct. 10, 2032
Lessee, finance lease, discount rate	5.62%
Pepco Holdings LLC | Unsecured tax-exempt bonds
Debt Instrument [Line Items]
Long-term debt, gross	$ 0	33
Pepco Holdings LLC | Unsecured tax-exempt bonds | Minimum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	4.15%
Pepco Holdings LLC | Unsecured tax-exempt bonds | Maximum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	4.20%
Pepco Holdings LLC | Medium-terms notes (unsecured)
Debt Instrument [Line Items]
Long-term debt, gross	$ 10	10
Pepco Holdings LLC | Medium-terms notes (unsecured) | Maximum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	7.72%
Long-term debt, maturity date	Feb. 01, 2027
Potomac Electric Power Company
Debt Instrument [Line Items]
Long-term debt, gross	$ 4,427	4,151
Total finance lease liabilities	27	26
Unamortized debt discount and premium, net	0	2
Unamortized debt issuance costs	(65)	(57)
Long-term debt due within one year	(6)	(405)
Long-term debt	4,356	3,691
Potomac Electric Power Company | First Mortgage Bonds
Debt Instrument [Line Items]
Long-term debt, gross	$ 4,400	4,125
Potomac Electric Power Company | First Mortgage Bonds | Minimum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	2.32%
Long-term debt, maturity date	Jun. 13, 2029
Potomac Electric Power Company | First Mortgage Bonds | Maximum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	7.90%
Long-term debt, maturity date	Mar. 15, 2054
Potomac Electric Power Company | Finance Leases
Debt Instrument [Line Items]
Total finance lease liabilities	$ 27	26
Potomac Electric Power Company | Finance Leases | Minimum
Debt Instrument [Line Items]
Long-term debt, maturity date	Feb. 10, 2025
Potomac Electric Power Company | Finance Leases | Maximum
Debt Instrument [Line Items]
Long-term debt, maturity date	Oct. 10, 2032
Lessee, finance lease, discount rate	5.62%
Delmarva Power & Light Company
Debt Instrument [Line Items]
Long-term debt, gross	$ 2,236	2,096
Total finance lease liabilities	28	29
Unamortized debt discount and premium, net	0	0
Unamortized debt issuance costs	(16)	(16)
Long-term debt, current maturities	(46)	(79)
Long-term debt due within one year	(130)	(84)
Long-term debt	2,090	1,996
Delmarva Power & Light Company | First Mortgage Bonds
Debt Instrument [Line Items]
Long-term debt, gross	$ 2,198	2,024
Delmarva Power & Light Company | First Mortgage Bonds | Minimum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	1.05%
Long-term debt, maturity date	Jul. 10, 2025
Delmarva Power & Light Company | First Mortgage Bonds | Maximum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	5.72%
Long-term debt, maturity date	Mar. 20, 2054
Delmarva Power & Light Company | Finance Leases
Debt Instrument [Line Items]
Total finance lease liabilities	$ 28	29
Delmarva Power & Light Company | Finance Leases | Minimum
Debt Instrument [Line Items]
Long-term debt, maturity date	Feb. 10, 2025
Delmarva Power & Light Company | Finance Leases | Maximum
Debt Instrument [Line Items]
Long-term debt, maturity date	Oct. 10, 2032
Lessee, finance lease, discount rate	5.62%
Delmarva Power & Light Company | Unsecured tax-exempt bonds
Debt Instrument [Line Items]
Long-term debt, gross	$ 0	33
Delmarva Power & Light Company | Unsecured tax-exempt bonds | Minimum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	4.15%
Delmarva Power & Light Company | Unsecured tax-exempt bonds | Maximum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	4.20%
Delmarva Power & Light Company | Medium-terms notes (unsecured)
Debt Instrument [Line Items]
Long-term debt, gross	$ 10	10
Delmarva Power & Light Company | Medium-terms notes (unsecured) | Maximum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	7.72%
Long-term debt, maturity date	Feb. 01, 2027
Atlantic City Electric Company
Debt Instrument [Line Items]
Long-term debt, gross	$ 1,943	1,842
Total finance lease liabilities	20	19
Unamortized debt issuance costs	(10)	(9)
Long-term debt due within one year	(154)	(154)
Long-term debt	1,779	1,679
Atlantic City Electric Company | First Mortgage Bonds
Debt Instrument [Line Items]
Long-term debt, gross	$ 1,923	1,823
Atlantic City Electric Company | First Mortgage Bonds | Minimum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	2.25%
Long-term debt, maturity date	Dec. 01, 2025
Atlantic City Electric Company | First Mortgage Bonds | Maximum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	5.80%
Long-term debt, maturity date	Mar. 20, 2054
Atlantic City Electric Company | Finance Leases
Debt Instrument [Line Items]
Total finance lease liabilities	$ 20	$ 19
Atlantic City Electric Company | Finance Leases | Minimum
Debt Instrument [Line Items]
Long-term debt, maturity date	Feb. 10, 2025
Atlantic City Electric Company | Finance Leases | Maximum
Debt Instrument [Line Items]
Long-term debt, maturity date	Oct. 10, 2032
Lessee, finance lease, discount rate	5.62%

Debt and Credit Agreements - Sc

Debt and Credit Agreements - Schedule of Long-term Debt Maturities (Details) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($)
Debt Instrument [Line Items]
2025	$ 1,453
2026	1,618
2027	1,025
2028	1,992
2029	930
Thereafter	37,650
Total	44,668
Corporate, Non-Segment
Debt Instrument [Line Items]
2025	807
2026	750
2027	650
2028	1,000
2029	650
Thereafter	8,238
Total	$ 12,095
Loan agreements | Corporate, Non-Segment
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	0.85%
Related Party | Long-term debt to financing trusts
Debt Instrument [Line Items]
Total	$ 390
Commonwealth Edison Co
Debt Instrument [Line Items]
2025	0
2026	500
2027	350
2028	550
2029	0
Thereafter	10,968
Total	$ 12,368
Debt instrument, basis spread on variable rate	1%
Commonwealth Edison Co | ComEd Financing III Affiliate | Long-term debt to financing trusts
Debt Instrument [Line Items]
Total	$ 206
PECO Energy Co
Debt Instrument [Line Items]
2025	350
2026	0
2027	0
2028	81
2029	0
Thereafter	5,528
Total	$ 5,959
Debt instrument, basis spread on variable rate	0.90%
PECO Energy Co | PECO Financing Trusts | Long-term debt to financing trusts
Debt Instrument [Line Items]
Total	$ 184
Baltimore Gas and Electric Company
Debt Instrument [Line Items]
2025	0
2026	350
2027	0
2028	0
2029	0
Thereafter	5,100
Total	$ 5,450
Debt instrument, basis spread on variable rate	0.90%
Pepco Holdings LLC
Debt Instrument [Line Items]
2025	$ 290
2026	19
2027	25
2028	361
2029	281
Thereafter	7,816
Total	8,792
Potomac Electric Power Company
Debt Instrument [Line Items]
2025	6
2026	7
2027	5
2028	4
2029	153
Thereafter	4,252
Total	$ 4,427
Debt instrument, basis spread on variable rate	1.075%
Delmarva Power & Light Company
Debt Instrument [Line Items]
2025	$ 130
2026	7
2027	16
2028	4
2029	3
Thereafter	2,076
Total	$ 2,236
Debt instrument, basis spread on variable rate	1%
Atlantic City Electric Company
Debt Instrument [Line Items]
2025	$ 154
2026	5
2027	4
2028	353
2029	125
Thereafter	1,302
Total	$ 1,943
Debt instrument, basis spread on variable rate	1%

Fair Value of Financial Asset_3

Fair Value of Financial Assets and Liabilities - Fair Value of Financial Liabilities Recorded at Amortized Cost (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Estimate of Fair Value Measurement [Member] | Related Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	$ 396	$ 390
Estimate of Fair Value Measurement [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	39,057	37,246
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Related Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	0	0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	0	0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Related Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)		0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	35,337	33,804
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	396
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] | Related Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)		390
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	3,720	3,442
Reported Value Measurement [Member] | Related Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	390	390
Reported Value Measurement [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	44,400	41,095
Long-term debt (including amounts due within one year)	542	582
Commonwealth Edison Co | Estimate of Fair Value Measurement [Member] | Related Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	208	208
Commonwealth Edison Co | Estimate of Fair Value Measurement [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	10,260	10,210
Commonwealth Edison Co | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Related Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	0	0
Commonwealth Edison Co | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	0	0
Commonwealth Edison Co | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	0
Commonwealth Edison Co | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Related Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)		0
Commonwealth Edison Co | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	10,260	10,210
Commonwealth Edison Co | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	208
Commonwealth Edison Co | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] | Related Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)		208
Commonwealth Edison Co | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	0	0
Commonwealth Edison Co | Reported Value Measurement [Member] | Related Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	206	205
Commonwealth Edison Co | Reported Value Measurement [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	12,030	11,486
PECO Energy Co | Estimate of Fair Value Measurement [Member] | Related Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	188	182
PECO Energy Co | Estimate of Fair Value Measurement [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	4,816	4,562
PECO Energy Co | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Related Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	0	0
PECO Energy Co | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	0	0
PECO Energy Co | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	0
PECO Energy Co | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Related Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)		0
PECO Energy Co | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	4,816	4,562
PECO Energy Co | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	188
PECO Energy Co | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] | Related Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)		182
PECO Energy Co | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	0	0
PECO Energy Co | Reported Value Measurement [Member] | Related Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	184	184
PECO Energy Co | Reported Value Measurement [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	5,704	5,134
Baltimore Gas and Electric Company | Estimate of Fair Value Measurement [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	4,702	4,145
Baltimore Gas and Electric Company | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	0	0
Baltimore Gas and Electric Company | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	4,702	4,145
Baltimore Gas and Electric Company | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	0	0
Baltimore Gas and Electric Company | Reported Value Measurement [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	5,395	4,602
Pepco Holdings LLC | Estimate of Fair Value Measurement [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	7,813	7,602
Pepco Holdings LLC | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	0	0
Pepco Holdings LLC | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	4,093	4,160
Pepco Holdings LLC | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	3,720	3,442
Pepco Holdings LLC | Reported Value Measurement [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	9,124	8,648
Pepco Holdings LLC
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	400	429
Potomac Electric Power Company | Estimate of Fair Value Measurement [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	4,019	3,911
Potomac Electric Power Company | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	0	0
Potomac Electric Power Company | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	2,475	2,311
Potomac Electric Power Company | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	1,544	1,600
Potomac Electric Power Company | Reported Value Measurement [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	4,362	4,096
Delmarva Power & Light Company | Estimate of Fair Value Measurement [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	1,873	1,828
Delmarva Power & Light Company | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	0	0
Delmarva Power & Light Company | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	623	694
Delmarva Power & Light Company | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	1,250	1,134
Delmarva Power & Light Company | Reported Value Measurement [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	2,220	2,080
Atlantic City Electric Company | Estimate of Fair Value Measurement [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	1,712	1,647
Atlantic City Electric Company | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	0	0
Atlantic City Electric Company | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	787	939
Atlantic City Electric Company | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	925	708
Atlantic City Electric Company | Reported Value Measurement [Member] | Nonrelated Party
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Long-term debt (including amounts due within one year)	$ 1,933	$ 1,833

Fair Value of Financial Asset_4

Fair Value of Financial Assets and Liabilities - Fair Value Measurement of Assets and Liabilities, Recurring (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Market-to-market derivative liabilities, current	$ 29	$ 74
Derivative Liability, Noncurrent	103	106
Cash and Cash Equivalents [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	219	334
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	219	334
Restricted cash [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	176	149
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	176	149
Other assets
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	41	174
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	41	174
Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	544	618
Assets, Fair Value Disclosure	830	861
Obligations, Fair Value Disclosure	74	75
Total liabilities	(207)	(254)
Fair Value, Net Asset (Liability)	623	607
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	544	618
Fair Value, Recurring [Member] | Mark-to-Market Derivative Liabilities [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Trading Liabilities, Fair Value Disclosure	132	133
Fair Value, Recurring [Member] | Interest Rate Derivative Liabilities [Domain]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Trading Liabilities, Fair Value Disclosure	1	46
Fair Value, Recurring [Member] | Derivatives Designated as Hedging Instruments Liabilities [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Trading Liabilities, Fair Value Disclosure	1	24
Fair Value, Recurring [Member] | Economic Hedging Instrument Liabilites [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Trading Liabilities, Fair Value Disclosure	0	22
Fair Value, Recurring [Member] | Rabbi Trust Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	260	231
Fair Value, Recurring [Member] | Cash Equivalents [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	94	67
Fair Value, Recurring [Member] | Mutual Fund [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	65	53
Fair Value, Recurring [Member] | Fixed Income Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	6	7
Fair Value, Recurring [Member] | 6311 Life Insurance [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	95	104
Fair Value, Recurring [Member] | Interest Rate Derivative Assets
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Derivative Asset	26	12
Fair Value, Recurring [Member] | Designated as Hedging Instrument [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Derivative Asset	26	11
Fair Value, Recurring [Member] | Economic Hedges [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Derivative Asset	0	1
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	544	618
Assets, Fair Value Disclosure	703	738
Obligations, Fair Value Disclosure	0	0
Total liabilities	0	0
Fair Value, Net Asset (Liability)	703	738
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	544	618
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Mark-to-Market Derivative Liabilities [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Trading Liabilities, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Interest Rate Derivative Liabilities [Domain]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Trading Liabilities, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Derivatives Designated as Hedging Instruments Liabilities [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Trading Liabilities, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Economic Hedging Instrument Liabilites [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Trading Liabilities, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	159	120
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	94	67
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Mutual Fund [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	65	53
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Fixed Income Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Interest Rate Derivative Assets
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Derivative Asset	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Designated as Hedging Instrument [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Derivative Asset	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Economic Hedges [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Derivative Asset	0	0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Assets, Fair Value Disclosure	105	80
Obligations, Fair Value Disclosure	74	75
Total liabilities	(75)	(121)
Fair Value, Net Asset (Liability)	30	(41)
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Mark-to-Market Derivative Liabilities [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Trading Liabilities, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Interest Rate Derivative Liabilities [Domain]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Trading Liabilities, Fair Value Disclosure	1	46
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Derivatives Designated as Hedging Instruments Liabilities [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Trading Liabilities, Fair Value Disclosure	1	24
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Economic Hedging Instrument Liabilites [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Trading Liabilities, Fair Value Disclosure	0	22
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	79	68
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Mutual Fund [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Fixed Income Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	6	7
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	73	61
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Interest Rate Derivative Assets
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Derivative Asset	26	12
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Designated as Hedging Instrument [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Derivative Asset	26	11
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Economic Hedges [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Derivative Asset	0	1
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Assets, Fair Value Disclosure	22	43
Obligations, Fair Value Disclosure	0	0
Total liabilities	(132)	(133)
Fair Value, Net Asset (Liability)	(110)	(90)
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Mark-to-Market Derivative Liabilities [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Trading Liabilities, Fair Value Disclosure	132	133
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Interest Rate Derivative Liabilities [Domain]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Trading Liabilities, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Derivatives Designated as Hedging Instruments Liabilities [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Trading Liabilities, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Economic Hedging Instrument Liabilites [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Trading Liabilities, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	22	43
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Mutual Fund [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Fixed Income Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	22	43
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Interest Rate Derivative Assets
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Derivative Asset	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Designated as Hedging Instrument [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Derivative Asset	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Economic Hedges [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Derivative Asset	0	0
Commonwealth Edison Co
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Market-to-market derivative liabilities, current	29	27
Derivative Liability, Noncurrent	103	106
Commonwealth Edison Co | Cash and Cash Equivalents [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	66	86
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	66	86
Commonwealth Edison Co | Restricted cash [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	176	147
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	176	147
Commonwealth Edison Co | Other assets
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	41	174
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	41	174
Commonwealth Edison Co | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	390	453
Derivative Asset	0
Assets, Fair Value Disclosure	390	453
Obligations, Fair Value Disclosure	8	8
Total liabilities	(140)	(141)
Fair Value, Net Asset (Liability)	250	312
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	390	453
Commonwealth Edison Co | Fair Value, Recurring [Member] | Mark-to-Market Derivative Liabilities [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Trading Liabilities, Fair Value Disclosure	132	133
Commonwealth Edison Co | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Commonwealth Edison Co | Fair Value, Recurring [Member] | Mutual Fund [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Commonwealth Edison Co | Fair Value, Recurring [Member] | 6311 Life Insurance [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Commonwealth Edison Co | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	390	453
Assets, Fair Value Disclosure	390	453
Obligations, Fair Value Disclosure	0	0
Total liabilities	0	0
Fair Value, Net Asset (Liability)	390	453
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	390	453
Commonwealth Edison Co | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Mark-to-Market Derivative Liabilities [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Trading Liabilities, Fair Value Disclosure	0	0
Commonwealth Edison Co | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Commonwealth Edison Co | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Mutual Fund [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Commonwealth Edison Co | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Commonwealth Edison Co | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Assets, Fair Value Disclosure	0	0
Obligations, Fair Value Disclosure	8	8
Total liabilities	(8)	(8)
Fair Value, Net Asset (Liability)	(8)	(8)
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Commonwealth Edison Co | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Mark-to-Market Derivative Liabilities [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Trading Liabilities, Fair Value Disclosure	0	0
Commonwealth Edison Co | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Commonwealth Edison Co | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Mutual Fund [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Commonwealth Edison Co | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Commonwealth Edison Co | Fair Value, Inputs, Level 3 [Member]
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Market-to-market derivative liabilities, current	29	27
Derivative Liability, Noncurrent	103	106
Commonwealth Edison Co | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Assets, Fair Value Disclosure	0	0
Obligations, Fair Value Disclosure	0	0
Total liabilities	(132)	(133)
Fair Value, Net Asset (Liability)	(132)	(133)
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Commonwealth Edison Co | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Mark-to-Market Derivative Liabilities [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Trading Liabilities, Fair Value Disclosure	132	133
Commonwealth Edison Co | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Commonwealth Edison Co | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Mutual Fund [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Commonwealth Edison Co | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Commonwealth Edison Co | Fair Value Measured at Net Asset Value Per Share [Member] | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Assets, Fair Value Disclosure	0	0
Total liabilities	0	0
PECO Energy Co | Cash and Cash Equivalents [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	19	42
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	19	42
PECO Energy Co | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	29	9
Assets, Fair Value Disclosure	63	36
Obligations, Fair Value Disclosure	7	8
Total liabilities	(7)	(8)
Fair Value, Net Asset (Liability)	56	28
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	29	9
PECO Energy Co | Fair Value, Recurring [Member] | Mark-to-Market Derivative Liabilities [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Trading Liabilities, Fair Value Disclosure	0	0
PECO Energy Co | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	34	27
PECO Energy Co | Fair Value, Recurring [Member] | Mutual Fund [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	12	9
PECO Energy Co | Fair Value, Recurring [Member] | 6311 Life Insurance [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	22	18
PECO Energy Co | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	29	9
Assets, Fair Value Disclosure	41	18
Obligations, Fair Value Disclosure	0	0
Total liabilities	0	0
Fair Value, Net Asset (Liability)	41	18
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	29	9
PECO Energy Co | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Mark-to-Market Derivative Liabilities [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Trading Liabilities, Fair Value Disclosure	0	0
PECO Energy Co | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	12	9
PECO Energy Co | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Mutual Fund [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	12	9
PECO Energy Co | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
PECO Energy Co | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Assets, Fair Value Disclosure	22	18
Obligations, Fair Value Disclosure	7	8
Total liabilities	(7)	(8)
Fair Value, Net Asset (Liability)	15	10
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
PECO Energy Co | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Mark-to-Market Derivative Liabilities [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Trading Liabilities, Fair Value Disclosure	0	0
PECO Energy Co | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	22	18
PECO Energy Co | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Mutual Fund [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
PECO Energy Co | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	22	18
PECO Energy Co | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Assets, Fair Value Disclosure	0	0
Obligations, Fair Value Disclosure	0	0
Total liabilities	0	0
Fair Value, Net Asset (Liability)	0	0
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
PECO Energy Co | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Mark-to-Market Derivative Liabilities [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Trading Liabilities, Fair Value Disclosure	0	0
PECO Energy Co | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
PECO Energy Co | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Mutual Fund [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
PECO Energy Co | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
PECO Energy Co | Fair Value Measured at Net Asset Value Per Share [Member] | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Assets, Fair Value Disclosure	0	0
Total liabilities	0	0
Baltimore Gas and Electric Company | Cash and Cash Equivalents [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	33	47
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	33	47
Baltimore Gas and Electric Company | Restricted cash [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure		1
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure		1
Baltimore Gas and Electric Company | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	1	0
Assets, Fair Value Disclosure	11	9
Obligations, Fair Value Disclosure	4	4
Total liabilities	(4)	(4)
Fair Value, Net Asset (Liability)	7	5
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	1	0
Baltimore Gas and Electric Company | Fair Value, Recurring [Member] | Restricted cash [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0
Baltimore Gas and Electric Company | Fair Value, Recurring [Member] | Mark-to-Market Derivative Liabilities [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Trading Liabilities, Fair Value Disclosure	0	0
Baltimore Gas and Electric Company | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	10	9
Baltimore Gas and Electric Company | Fair Value, Recurring [Member] | Mutual Fund [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	10	9
Baltimore Gas and Electric Company | Fair Value, Recurring [Member] | 6311 Life Insurance [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Baltimore Gas and Electric Company | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	1	0
Assets, Fair Value Disclosure	11	9
Obligations, Fair Value Disclosure	0	0
Total liabilities	0	0
Fair Value, Net Asset (Liability)	11	9
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	1	0
Baltimore Gas and Electric Company | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Mark-to-Market Derivative Liabilities [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Trading Liabilities, Fair Value Disclosure	0	0
Baltimore Gas and Electric Company | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	10	9
Baltimore Gas and Electric Company | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Mutual Fund [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	10	9
Baltimore Gas and Electric Company | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Baltimore Gas and Electric Company | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Assets, Fair Value Disclosure	0	0
Obligations, Fair Value Disclosure	4	4
Total liabilities	(4)	(4)
Fair Value, Net Asset (Liability)	(4)	(4)
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Baltimore Gas and Electric Company | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Mark-to-Market Derivative Liabilities [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Trading Liabilities, Fair Value Disclosure	0	0
Baltimore Gas and Electric Company | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Baltimore Gas and Electric Company | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Mutual Fund [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Baltimore Gas and Electric Company | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Baltimore Gas and Electric Company | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Assets, Fair Value Disclosure	0	0
Obligations, Fair Value Disclosure	0	0
Total liabilities	0	0
Fair Value, Net Asset (Liability)	0	0
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Baltimore Gas and Electric Company | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Mark-to-Market Derivative Liabilities [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Trading Liabilities, Fair Value Disclosure	0	0
Baltimore Gas and Electric Company | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Baltimore Gas and Electric Company | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Mutual Fund [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Baltimore Gas and Electric Company | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Baltimore Gas and Electric Company | Fair Value Measured at Net Asset Value Per Share [Member] | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Assets, Fair Value Disclosure	0	0
Total liabilities	0	0
Pepco Holdings LLC | Cash and Cash Equivalents [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	70	96
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	70	96
Pepco Holdings LLC | Restricted cash [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure		1
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure		1
Pepco Holdings LLC | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	93	107
Assets, Fair Value Disclosure	244	249
Obligations, Fair Value Disclosure	12	13
Total liabilities	(12)	(13)
Fair Value, Net Asset (Liability)	232	236
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	93	107
Pepco Holdings LLC | Fair Value, Recurring [Member] | Restricted cash [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0
Pepco Holdings LLC | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	151	142
Pepco Holdings LLC | Fair Value, Recurring [Member] | Cash Equivalents [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	92	64
Pepco Holdings LLC | Fair Value, Recurring [Member] | Mutual Fund [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	9	9
Pepco Holdings LLC | Fair Value, Recurring [Member] | Fixed Income Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	6	7
Pepco Holdings LLC | Fair Value, Recurring [Member] | 6311 Life Insurance [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	44	62
Pepco Holdings LLC | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	93	107
Assets, Fair Value Disclosure	194	180
Obligations, Fair Value Disclosure	0	0
Total liabilities	0	0
Fair Value, Net Asset (Liability)	194	180
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	93	107
Pepco Holdings LLC | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	101	73
Pepco Holdings LLC | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	92	64
Pepco Holdings LLC | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Mutual Fund [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	9	9
Pepco Holdings LLC | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Fixed Income Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Pepco Holdings LLC | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Pepco Holdings LLC | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Assets, Fair Value Disclosure	29	28
Obligations, Fair Value Disclosure	12	13
Total liabilities	(12)	(13)
Fair Value, Net Asset (Liability)	17	15
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Pepco Holdings LLC | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	29	28
Pepco Holdings LLC | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Pepco Holdings LLC | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Mutual Fund [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Pepco Holdings LLC | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Fixed Income Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	6	7
Pepco Holdings LLC | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	23	21
Pepco Holdings LLC | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Assets, Fair Value Disclosure	21	41
Obligations, Fair Value Disclosure	0	0
Total liabilities	0	0
Fair Value, Net Asset (Liability)	21	41
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Pepco Holdings LLC | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	21	41
Pepco Holdings LLC | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Pepco Holdings LLC | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Mutual Fund [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Pepco Holdings LLC | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Fixed Income Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Pepco Holdings LLC | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	21	41
Pepco Holdings LLC | Fair Value Measured at Net Asset Value Per Share [Member] | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Assets, Fair Value Disclosure	0	0
Total liabilities	0	0
Potomac Electric Power Company | Cash and Cash Equivalents [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	30	48
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	30	48
Potomac Electric Power Company | Restricted cash [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure		1
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure		1
Potomac Electric Power Company | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	21	23
Assets, Fair Value Disclosure	156	148
Obligations, Fair Value Disclosure	1	1
Total liabilities	(1)	(1)
Fair Value, Net Asset (Liability)	155	147
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	21	23
Potomac Electric Power Company | Fair Value, Recurring [Member] | Restricted cash [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0
Potomac Electric Power Company | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	135	125
Potomac Electric Power Company | Fair Value, Recurring [Member] | Cash Equivalents [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	91	63
Potomac Electric Power Company | Fair Value, Recurring [Member] | 6311 Life Insurance [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	44	62
Potomac Electric Power Company | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	21	23
Assets, Fair Value Disclosure	112	86
Obligations, Fair Value Disclosure	0	0
Total liabilities	0	0
Fair Value, Net Asset (Liability)	112	86
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	21	23
Potomac Electric Power Company | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	91	63
Potomac Electric Power Company | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	91	63
Potomac Electric Power Company | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Potomac Electric Power Company | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Assets, Fair Value Disclosure	23	21
Obligations, Fair Value Disclosure	1	1
Total liabilities	(1)	(1)
Fair Value, Net Asset (Liability)	22	20
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Potomac Electric Power Company | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	23	21
Potomac Electric Power Company | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Potomac Electric Power Company | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	23	21
Potomac Electric Power Company | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Assets, Fair Value Disclosure	21	41
Obligations, Fair Value Disclosure	0	0
Total liabilities	0	0
Fair Value, Net Asset (Liability)	21	41
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Potomac Electric Power Company | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	21	41
Potomac Electric Power Company | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Potomac Electric Power Company | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	21	41
Potomac Electric Power Company | Fair Value Measured at Net Asset Value Per Share [Member] | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Assets, Fair Value Disclosure	0	0
Total liabilities	0	0
Delmarva Power & Light Company | Cash and Cash Equivalents [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	20	15
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	20	15
Delmarva Power & Light Company | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	3	1
Assets, Fair Value Disclosure	3	1
Obligations, Fair Value Disclosure	0	0
Total liabilities	0	0
Fair Value, Net Asset (Liability)	3	1
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	3	1
Delmarva Power & Light Company | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Delmarva Power & Light Company | Fair Value, Recurring [Member] | Cash Equivalents [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Delmarva Power & Light Company | Fair Value, Recurring [Member] | 6311 Life Insurance [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Delmarva Power & Light Company | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	3	1
Assets, Fair Value Disclosure	3	1
Obligations, Fair Value Disclosure	0	0
Total liabilities	0	0
Fair Value, Net Asset (Liability)	3	1
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	3	1
Delmarva Power & Light Company | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Delmarva Power & Light Company | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Delmarva Power & Light Company | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Delmarva Power & Light Company | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Assets, Fair Value Disclosure	0	0
Obligations, Fair Value Disclosure	0	0
Total liabilities	0	0
Fair Value, Net Asset (Liability)	0	0
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Delmarva Power & Light Company | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Delmarva Power & Light Company | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Delmarva Power & Light Company | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Delmarva Power & Light Company | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Assets, Fair Value Disclosure	0	0
Obligations, Fair Value Disclosure	0	0
Total liabilities	0	0
Fair Value, Net Asset (Liability)	0	0
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Delmarva Power & Light Company | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Delmarva Power & Light Company | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Delmarva Power & Light Company | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Delmarva Power & Light Company | Fair Value Measured at Net Asset Value Per Share [Member] | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Assets, Fair Value Disclosure	0	0
Total liabilities	0	0
Atlantic City Electric Company | Cash and Cash Equivalents [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	14	21
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	14	21
Atlantic City Electric Company | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Assets, Fair Value Disclosure	0	0
Obligations, Fair Value Disclosure	0	0
Total liabilities	0	0
Fair Value, Net Asset (Liability)	0	0
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Atlantic City Electric Company | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Atlantic City Electric Company | Fair Value, Recurring [Member] | Cash Equivalents [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Atlantic City Electric Company | Fair Value, Recurring [Member] | 6311 Life Insurance [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Atlantic City Electric Company | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Assets, Fair Value Disclosure	0	0
Obligations, Fair Value Disclosure	0	0
Total liabilities	0	0
Fair Value, Net Asset (Liability)	0	0
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Atlantic City Electric Company | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Atlantic City Electric Company | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Atlantic City Electric Company | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Atlantic City Electric Company | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Assets, Fair Value Disclosure	0	0
Obligations, Fair Value Disclosure	0	0
Total liabilities	0	0
Fair Value, Net Asset (Liability)	0	0
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Atlantic City Electric Company | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Atlantic City Electric Company | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Atlantic City Electric Company | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Atlantic City Electric Company | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Assets, Fair Value Disclosure	0	0
Obligations, Fair Value Disclosure	0	0
Total liabilities	0	0
Fair Value, Net Asset (Liability)	0	0
Footnotes To Fair Value Assets And Liabilities Measured On Recurring Basis [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Atlantic City Electric Company | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Rabbi Trust Investments [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Atlantic City Electric Company | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Cash Equivalents [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Atlantic City Electric Company | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | 6311 Life Insurance [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Investments, Fair Value Disclosure	0	0
Atlantic City Electric Company | Fair Value Measured at Net Asset Value Per Share [Member] | Fair Value, Recurring [Member]
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Assets, Fair Value Disclosure	0	0
Total liabilities	$ 0	$ 0

Fair Value of Financial Asset_5

Fair Value of Financial Assets and Liabilities - Fair Value Reconciliation of Level 3 Assets and Liabilities Measured on a Recurring Basis (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Purchases, sales, issuances and settlements
Market-to-market derivative liabilities, current	$ 29	$ 74
Derivative Liability, Noncurrent	103	106
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	(90)	(44)
Total realized / unrealized gains (losses)
Included in net income	1	3
Included in regulatory assets/liabilities	1	(49)
Purchases, sales, issuances and settlements
Settlements	22
Ending Balance	(110)	(90)
The amount of total gains included in income attributed to the change in unrealized gains (losses) related to assets and liabilities as of December 31, 2024	1	3
Commonwealth Edison Co
Purchases, sales, issuances and settlements
Market-to-market derivative liabilities, current	29	27
Derivative Liability, Noncurrent	103	106
Commonwealth Edison Co | Fair Value, Inputs, Level 3 [Member]
Purchases, sales, issuances and settlements
Market-to-market derivative liabilities, current	29	27
Derivative Liability, Noncurrent	103	106
Commonwealth Edison Co | Derivative [Member] | Interest Rate Swap
Purchases, sales, issuances and settlements
Realized Investment Gains (Losses)	40	34
Commonwealth Edison Co | Derivative [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	(133)	(84)
Total realized / unrealized gains (losses)
Included in net income	0	0
Included in regulatory assets/liabilities	1	(49)
Purchases, sales, issuances and settlements
Settlements	0
Ending Balance	(132)	(133)
The amount of total gains included in income attributed to the change in unrealized gains (losses) related to assets and liabilities as of December 31, 2024	0	0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Period Increase (Decrease)	(40)	(83)
Pepco Holdings LLC | 6311 Life Insurance [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	41	40
Total realized / unrealized gains (losses)
Included in net income	2	1
Included in regulatory assets/liabilities	0	0
Purchases, sales, issuances and settlements
Settlements	22
Ending Balance	21	41
The amount of total gains included in income attributed to the change in unrealized gains (losses) related to assets and liabilities as of December 31, 2024	2	1
Potomac Electric Power Company | 6311 Life Insurance [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	41	40
Total realized / unrealized gains (losses)
Included in net income	2	1
Included in regulatory assets/liabilities	0	0
Purchases, sales, issuances and settlements
Settlements	22
Ending Balance	21	41
The amount of total gains included in income attributed to the change in unrealized gains (losses) related to assets and liabilities as of December 31, 2024	$ 2	$ 1

Fair Value of Financial Asset_6

Fair Value of Financial Assets and Liabilities - Fair Value Inputs Assets Quantitative Information (Details) - Derivative [Member] - Fair Value, Inputs, Level 3 [Member] - USD ($)	Dec. 31, 2024	Dec. 31, 2023
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative Liability, Fair Value, Amount Not Offset Against Collateral	$ (132,000,000)	$ (133,000,000)
Minimum | Discounted Cash Flow [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value Inputs Forward Power Price	30.31	30.27
Arithmetic Average [Member] | Discounted Cash Flow [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value Inputs Forward Power Price	42.08	43.35
Maximum | Discounted Cash Flow [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value Inputs Forward Power Price	59.88	73.71
Commonwealth Edison Co
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative Liability, Fair Value, Amount Not Offset Against Collateral	$ (132,000,000)	$ (133,000,000)
Commonwealth Edison Co | Minimum | Discounted Cash Flow [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value Inputs Forward Power Price	30.31	30.27
Commonwealth Edison Co | Arithmetic Average [Member] | Discounted Cash Flow [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value Inputs Forward Power Price	42.08	43.35
Commonwealth Edison Co | Maximum | Discounted Cash Flow [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value Inputs Forward Power Price	59.88	73.71

Commitments and Contingencies -

Commitments and Contingencies - Narrative (Details) $ in Millions	1 Months Ended	12 Months Ended
	Nov. 30, 2020 USD ($)	Dec. 31, 2024 USD ($) mGPSite	May 31, 2024 USD ($)	Apr. 30, 2024 USD ($)	Apr. 11, 2024 USD ($)	Feb. 02, 2024 USD ($)	Oct. 04, 2023 USD ($)	Sep. 07, 2023 USD ($)
Commitments and Contingencies [Line Items]
Income taxes receivable, noncurrent		$ 100
Commonwealth Edison Co
Commitments and Contingencies [Line Items]
Sites under study/remediation | mGPSite		16
Deferred Prosecution Payment	$ 200
Loss Contingency Accrual							$ 46.2
Customer Refund Liability, Current			$ 38
Commonwealth Edison Co | Accrual For MGP Investigation And Remediation [Member]
Commitments and Contingencies [Line Items]
Accrual for Environmental Loss Contingencies, Period Increase (Decrease)		$ 13
Commonwealth Edison Co | Illinois Chamber of Commerce
Commitments and Contingencies [Line Items]
Customer Refund Liability, Current				$ 31
PECO Energy Co
Commitments and Contingencies [Line Items]
Sites under study/remediation | mGPSite		6
PECO Energy Co | Accrual For MGP Investigation And Remediation [Member]
Commitments and Contingencies [Line Items]
Accrual for Environmental Loss Contingencies, Period Increase (Decrease)		$ 4
Baltimore Gas and Electric Company
Commitments and Contingencies [Line Items]
Sites under study/remediation | mGPSite		4
Banking Regulation, Common Equity Tier One Risk-Based Capital Ratio, Actual		0.48
Income taxes receivable, noncurrent		$ 65
Pepco Holdings LLC
Commitments and Contingencies [Line Items]
Income taxes receivable, noncurrent		$ 35
Potomac Electric Power Company
Commitments and Contingencies [Line Items]
Environmental Liability - Anacostia					$ 47
Environmental Liability - Buzzard Point						$ 10
Banking Regulation, Common Equity Tier One Risk-Based Capital Ratio, Actual		0.48
Income taxes receivable, noncurrent		$ 25
Delmarva Power & Light Company
Commitments and Contingencies [Line Items]
Sites under study/remediation | mGPSite		1
Banking Regulation, Common Equity Tier One Risk-Based Capital Ratio, Actual		0.48
Income taxes receivable, noncurrent		$ 10
Atlantic City Electric Company
Commitments and Contingencies [Line Items]
Banking Regulation, Common Equity Tier One Risk-Based Capital Ratio, Actual		0.48
Atlantic City Electric Company | Minimum
Commitments and Contingencies [Line Items]
Banking Regulation, Common Equity Tier One Risk-Based Capital Ratio, Actual		0.30
Exelon Business Services Co Affiliate
Commitments and Contingencies [Line Items]
Deferred Prosecution Agreement Liability, Current								$ 173
Insurers' Settlement Payment		$ 40
Settling Shareholders' Attorney Fees		$ 10

Commitments and Contingencies_3

Commitments and Contingencies - Schedule of PHI Merger Commitments (Details) $ in Millions	Dec. 31, 2024 USD ($)
PHI Merger Commitments [Line Items]
Other Commitment	$ 733
PEPCO Holdings Inc
PHI Merger Commitments [Line Items]
Other Commitment	513
Pepco Holdings LLC
PHI Merger Commitments [Line Items]
Other Commitment	203
Pepco Holdings LLC | PEPCO Holdings Inc
PHI Merger Commitments [Line Items]
Other Commitment	320
Potomac Electric Power Company
PHI Merger Commitments [Line Items]
Other Commitment	174
Potomac Electric Power Company | PEPCO Holdings Inc
PHI Merger Commitments [Line Items]
Other Commitment	120
Delmarva Power & Light Company
PHI Merger Commitments [Line Items]
Other Commitment	17
Delmarva Power & Light Company | PEPCO Holdings Inc
PHI Merger Commitments [Line Items]
Other Commitment	89
Atlantic City Electric Company
PHI Merger Commitments [Line Items]
Other Commitment	12
Atlantic City Electric Company | PEPCO Holdings Inc
PHI Merger Commitments [Line Items]
Other Commitment	111
Remaining Commitment [Member] | PEPCO Holdings Inc
PHI Merger Commitments [Line Items]
Other Commitment	27
Remaining Commitment [Member] | Pepco Holdings LLC | PEPCO Holdings Inc
PHI Merger Commitments [Line Items]
Other Commitment	24
Remaining Commitment [Member] | Potomac Electric Power Company | PEPCO Holdings Inc
PHI Merger Commitments [Line Items]
Other Commitment	23
Remaining Commitment [Member] | Delmarva Power & Light Company | PEPCO Holdings Inc
PHI Merger Commitments [Line Items]
Other Commitment	1
Remaining Commitment [Member] | Atlantic City Electric Company | PEPCO Holdings Inc
PHI Merger Commitments [Line Items]
Other Commitment	0
Guarantee Obligations [Member]
PHI Merger Commitments [Line Items]
Other Commitment	26
Guarantee Obligations [Member] | Pepco Holdings LLC
PHI Merger Commitments [Line Items]
Other Commitment	26
Guarantee Obligations [Member] | Potomac Electric Power Company
PHI Merger Commitments [Line Items]
Other Commitment	9
Guarantee Obligations [Member] | Delmarva Power & Light Company
PHI Merger Commitments [Line Items]
Other Commitment	10
Guarantee Obligations [Member] | Atlantic City Electric Company
PHI Merger Commitments [Line Items]
Other Commitment	$ 7

Commitments and Contingencies_4

Commitments and Contingencies - Schedule of Commercial Commitments (Details) $ in Millions	Dec. 31, 2024 USD ($)
Guarantor Obligations [Line Items]
Other Commitment	$ 733
Other Commitments, Due in Next Twelve Months	247
Other Commitment, to be Paid, Year Two	7
Other Commitment, to be Paid, Year Three	6
Other Commitment, to be Paid, Year Four	162
Other Commitment, to be Paid, Year Five	4
Other Commitment, to be Paid, after Year Five	307
Guarantee obligations maximum exposure	60
Commonwealth Edison Co
Guarantor Obligations [Line Items]
Other Commitment	254
Other Commitments, Due in Next Twelve Months	50
Other Commitment, to be Paid, Year Two	2
Other Commitment, to be Paid, Year Three	2
Other Commitment, to be Paid, Year Four	0
Other Commitment, to be Paid, Year Five	0
Other Commitment, to be Paid, after Year Five	200
PECO Energy Co
Guarantor Obligations [Line Items]
Other Commitment	184
Other Commitments, Due in Next Twelve Months	6
Other Commitment, to be Paid, Year Two	0
Other Commitment, to be Paid, Year Three	0
Other Commitment, to be Paid, Year Four	78
Other Commitment, to be Paid, Year Five	0
Other Commitment, to be Paid, after Year Five	100
Baltimore Gas and Electric Company
Guarantor Obligations [Line Items]
Other Commitment	30
Other Commitments, Due in Next Twelve Months	30
Other Commitment, to be Paid, Year Two	0
Other Commitment, to be Paid, Year Three	0
Other Commitment, to be Paid, Year Four	0
Other Commitment, to be Paid, Year Five	0
Other Commitment, to be Paid, after Year Five	0
Pepco Holdings LLC
Guarantor Obligations [Line Items]
Other Commitment	203
Other Commitments, Due in Next Twelve Months	99
Other Commitment, to be Paid, Year Two	5
Other Commitment, to be Paid, Year Three	4
Other Commitment, to be Paid, Year Four	84
Other Commitment, to be Paid, Year Five	4
Other Commitment, to be Paid, after Year Five	7
Guarantee obligations maximum exposure	60
Potomac Electric Power Company
Guarantor Obligations [Line Items]
Other Commitment	174
Other Commitments, Due in Next Twelve Months	87
Other Commitment, to be Paid, Year Two	2
Other Commitment, to be Paid, Year Three	1
Other Commitment, to be Paid, Year Four	80
Other Commitment, to be Paid, Year Five	1
Other Commitment, to be Paid, after Year Five	3
Guarantee obligations maximum exposure	20
Delmarva Power & Light Company
Guarantor Obligations [Line Items]
Other Commitment	17
Other Commitments, Due in Next Twelve Months	7
Other Commitment, to be Paid, Year Two	2
Other Commitment, to be Paid, Year Three	2
Other Commitment, to be Paid, Year Four	2
Other Commitment, to be Paid, Year Five	2
Other Commitment, to be Paid, after Year Five	2
Guarantee obligations maximum exposure	23
Atlantic City Electric Company
Guarantor Obligations [Line Items]
Other Commitment	12
Other Commitments, Due in Next Twelve Months	5
Other Commitment, to be Paid, Year Two	1
Other Commitment, to be Paid, Year Three	1
Other Commitment, to be Paid, Year Four	2
Other Commitment, to be Paid, Year Five	1
Other Commitment, to be Paid, after Year Five	2
Guarantee obligations maximum exposure	17
Financial Standby Letter of Credit [Member]
Guarantor Obligations [Line Items]
Other Commitment	55
Other Commitments, Due in Next Twelve Months	53
Other Commitment, to be Paid, Year Two	2
Other Commitment, to be Paid, Year Three	0
Other Commitment, to be Paid, Year Four	0
Other Commitment, to be Paid, Year Five	0
Other Commitment, to be Paid, after Year Five	0
Financial Standby Letter of Credit [Member] | Commonwealth Edison Co
Guarantor Obligations [Line Items]
Other Commitment	18
Other Commitments, Due in Next Twelve Months	16
Other Commitment, to be Paid, Year Two	2
Other Commitment, to be Paid, Year Three	0
Other Commitment, to be Paid, Year Four	0
Other Commitment, to be Paid, Year Five	0
Other Commitment, to be Paid, after Year Five	0
Financial Standby Letter of Credit [Member] | PECO Energy Co
Guarantor Obligations [Line Items]
Other Commitment	4
Other Commitments, Due in Next Twelve Months	4
Other Commitment, to be Paid, Year Two	0
Other Commitment, to be Paid, Year Three	0
Other Commitment, to be Paid, Year Four	0
Other Commitment, to be Paid, Year Five	0
Other Commitment, to be Paid, after Year Five	0
Financial Standby Letter of Credit [Member] | Baltimore Gas and Electric Company
Guarantor Obligations [Line Items]
Other Commitment	27
Other Commitments, Due in Next Twelve Months	27
Other Commitment, to be Paid, Year Two	0
Other Commitment, to be Paid, Year Three	0
Other Commitment, to be Paid, Year Four	0
Other Commitment, to be Paid, Year Five	0
Other Commitment, to be Paid, after Year Five	0
Financial Standby Letter of Credit [Member] | Pepco Holdings LLC
Guarantor Obligations [Line Items]
Other Commitment	3
Other Commitments, Due in Next Twelve Months	3
Other Commitment, to be Paid, Year Two	0
Other Commitment, to be Paid, Year Three	0
Other Commitment, to be Paid, Year Four	0
Other Commitment, to be Paid, Year Five	0
Other Commitment, to be Paid, after Year Five	0
Financial Standby Letter of Credit [Member] | Potomac Electric Power Company
Guarantor Obligations [Line Items]
Other Commitment	2
Other Commitments, Due in Next Twelve Months	2
Other Commitment, to be Paid, Year Two	0
Other Commitment, to be Paid, Year Three	0
Other Commitment, to be Paid, Year Four	0
Other Commitment, to be Paid, Year Five	0
Other Commitment, to be Paid, after Year Five	0
Financial Standby Letter of Credit [Member] | Delmarva Power & Light Company
Guarantor Obligations [Line Items]
Other Commitment	1
Other Commitments, Due in Next Twelve Months	1
Other Commitment, to be Paid, Year Two	0
Other Commitment, to be Paid, Year Three	0
Other Commitment, to be Paid, Year Four	0
Other Commitment, to be Paid, Year Five	0
Other Commitment, to be Paid, after Year Five	0
Surety Bond [Member]
Guarantor Obligations [Line Items]
Other Commitment	274
Other Commitments, Due in Next Twelve Months	194
Other Commitment, to be Paid, Year Two	0
Other Commitment, to be Paid, Year Three	2
Other Commitment, to be Paid, Year Four	78
Other Commitment, to be Paid, Year Five	0
Other Commitment, to be Paid, after Year Five	0
Surety Bond [Member] | Commonwealth Edison Co
Guarantor Obligations [Line Items]
Other Commitment	36
Other Commitments, Due in Next Twelve Months	34
Other Commitment, to be Paid, Year Two	0
Other Commitment, to be Paid, Year Three	2
Other Commitment, to be Paid, Year Four	0
Other Commitment, to be Paid, Year Five	0
Other Commitment, to be Paid, after Year Five	0
Surety Bond [Member] | PECO Energy Co
Guarantor Obligations [Line Items]
Other Commitment	2
Other Commitments, Due in Next Twelve Months	2
Other Commitment, to be Paid, Year Two	0
Other Commitment, to be Paid, Year Three	0
Other Commitment, to be Paid, Year Four	0
Other Commitment, to be Paid, Year Five	0
Other Commitment, to be Paid, after Year Five	0
Surety Bond [Member] | Baltimore Gas and Electric Company
Guarantor Obligations [Line Items]
Other Commitment	3
Other Commitments, Due in Next Twelve Months	3
Other Commitment, to be Paid, Year Two	0
Other Commitment, to be Paid, Year Three	0
Other Commitment, to be Paid, Year Four	0
Other Commitment, to be Paid, Year Five	0
Other Commitment, to be Paid, after Year Five	0
Surety Bond [Member] | Pepco Holdings LLC
Guarantor Obligations [Line Items]
Other Commitment	174
Other Commitments, Due in Next Twelve Months	96
Other Commitment, to be Paid, Year Two	0
Other Commitment, to be Paid, Year Three	0
Other Commitment, to be Paid, Year Four	78
Other Commitment, to be Paid, Year Five	0
Other Commitment, to be Paid, after Year Five	0
Surety Bond [Member] | Potomac Electric Power Company
Guarantor Obligations [Line Items]
Other Commitment	163
Other Commitments, Due in Next Twelve Months	85
Other Commitment, to be Paid, Year Two	0
Other Commitment, to be Paid, Year Three	0
Other Commitment, to be Paid, Year Four	78
Other Commitment, to be Paid, Year Five	0
Other Commitment, to be Paid, after Year Five	0
Surety Bond [Member] | Delmarva Power & Light Company
Guarantor Obligations [Line Items]
Other Commitment	6
Other Commitments, Due in Next Twelve Months	6
Other Commitment, to be Paid, Year Two	0
Other Commitment, to be Paid, Year Three	0
Other Commitment, to be Paid, Year Four	0
Other Commitment, to be Paid, Year Five	0
Other Commitment, to be Paid, after Year Five	0
Surety Bond [Member] | Atlantic City Electric Company
Guarantor Obligations [Line Items]
Other Commitment	5
Other Commitments, Due in Next Twelve Months	5
Other Commitment, to be Paid, Year Two	0
Other Commitment, to be Paid, Year Three	0
Other Commitment, to be Paid, Year Four	0
Other Commitment, to be Paid, Year Five	0
Other Commitment, to be Paid, after Year Five	0
Guarantee of Indebtedness of Others [Member]
Guarantor Obligations [Line Items]
Other Commitment	378
Other Commitments, Due in Next Twelve Months	0
Other Commitment, to be Paid, Year Two	0
Other Commitment, to be Paid, Year Three	0
Other Commitment, to be Paid, Year Four	78
Other Commitment, to be Paid, Year Five	0
Other Commitment, to be Paid, after Year Five	300
Guarantee of Indebtedness of Others [Member] | Commonwealth Edison Co
Guarantor Obligations [Line Items]
Other Commitment	200
Other Commitments, Due in Next Twelve Months	0
Other Commitment, to be Paid, Year Two	0
Other Commitment, to be Paid, Year Three	0
Other Commitment, to be Paid, Year Four	0
Other Commitment, to be Paid, Year Five	0
Other Commitment, to be Paid, after Year Five	200
Guarantee of Indebtedness of Others [Member] | PECO Energy Co
Guarantor Obligations [Line Items]
Other Commitment	178
Other Commitments, Due in Next Twelve Months	0
Other Commitment, to be Paid, Year Two	0
Other Commitment, to be Paid, Year Three	0
Other Commitment, to be Paid, Year Four	78
Other Commitment, to be Paid, Year Five	0
Other Commitment, to be Paid, after Year Five	100
Guarantee Obligations [Member]
Guarantor Obligations [Line Items]
Other Commitment	26
Other Commitments, Due in Next Twelve Months	0
Other Commitment, to be Paid, Year Two	5
Other Commitment, to be Paid, Year Three	4
Other Commitment, to be Paid, Year Four	6
Other Commitment, to be Paid, Year Five	4
Other Commitment, to be Paid, after Year Five	7
Guarantee Obligations [Member] | Pepco Holdings LLC
Guarantor Obligations [Line Items]
Other Commitment	26
Other Commitments, Due in Next Twelve Months	0
Other Commitment, to be Paid, Year Two	5
Other Commitment, to be Paid, Year Three	4
Other Commitment, to be Paid, Year Four	6
Other Commitment, to be Paid, Year Five	4
Other Commitment, to be Paid, after Year Five	7
Guarantee Obligations [Member] | Potomac Electric Power Company
Guarantor Obligations [Line Items]
Other Commitment	9
Other Commitments, Due in Next Twelve Months	0
Other Commitment, to be Paid, Year Two	2
Other Commitment, to be Paid, Year Three	1
Other Commitment, to be Paid, Year Four	2
Other Commitment, to be Paid, Year Five	1
Other Commitment, to be Paid, after Year Five	3
Guarantee Obligations [Member] | Delmarva Power & Light Company
Guarantor Obligations [Line Items]
Other Commitment	10
Other Commitments, Due in Next Twelve Months	0
Other Commitment, to be Paid, Year Two	2
Other Commitment, to be Paid, Year Three	2
Other Commitment, to be Paid, Year Four	2
Other Commitment, to be Paid, Year Five	2
Other Commitment, to be Paid, after Year Five	2
Guarantee Obligations [Member] | Atlantic City Electric Company
Guarantor Obligations [Line Items]
Other Commitment	7
Other Commitments, Due in Next Twelve Months	0
Other Commitment, to be Paid, Year Two	1
Other Commitment, to be Paid, Year Three	1
Other Commitment, to be Paid, Year Four	2
Other Commitment, to be Paid, Year Five	1
Other Commitment, to be Paid, after Year Five	$ 2
Minimum
Guarantor Obligations [Line Items]
Lessor, Operating Lease, Term of Contract	1 year
Minimum | Commonwealth Edison Co
Guarantor Obligations [Line Items]
Lessor, Operating Lease, Term of Contract	1 year
Minimum | PECO Energy Co
Guarantor Obligations [Line Items]
Lessor, Operating Lease, Term of Contract	1 year
Minimum | Baltimore Gas and Electric Company
Guarantor Obligations [Line Items]
Lessor, Operating Lease, Term of Contract	18 years
Minimum | Pepco Holdings LLC
Guarantor Obligations [Line Items]
Lessor, Operating Lease, Term of Contract	1 year
Minimum | Potomac Electric Power Company
Guarantor Obligations [Line Items]
Lessor, Operating Lease, Term of Contract	1 year
Minimum | Delmarva Power & Light Company
Guarantor Obligations [Line Items]
Lessor, Operating Lease, Term of Contract	7 years
Minimum | Guarantee Obligations [Member]
Guarantor Obligations [Line Items]
Lessor, Operating Lease, Term of Contract	1 year
Maximum
Guarantor Obligations [Line Items]
Lessor, Operating Lease, Term of Contract	78 years
Maximum | Commonwealth Edison Co
Guarantor Obligations [Line Items]
Lessor, Operating Lease, Term of Contract	12 years
Maximum | PECO Energy Co
Guarantor Obligations [Line Items]
Lessor, Operating Lease, Term of Contract	78 years
Maximum | Baltimore Gas and Electric Company
Guarantor Obligations [Line Items]
Lessor, Operating Lease, Term of Contract	18 years
Maximum | Pepco Holdings LLC
Guarantor Obligations [Line Items]
Lessor, Operating Lease, Term of Contract	8 years
Maximum | Potomac Electric Power Company
Guarantor Obligations [Line Items]
Lessor, Operating Lease, Term of Contract	1 year
Maximum | Delmarva Power & Light Company
Guarantor Obligations [Line Items]
Lessor, Operating Lease, Term of Contract	8 years
Maximum | Guarantee Obligations [Member]
Guarantor Obligations [Line Items]
Lessor, Operating Lease, Term of Contract	8 years

Commitments and Contingencies_5

Commitments and Contingencies - Schedule of Environmental Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Loss Contingencies [Line Items]
Accrual for Environmental Loss Contingencies, Gross	$ 403	$ 428
Commonwealth Edison Co
Loss Contingencies [Line Items]
Accrual for Environmental Loss Contingencies, Gross	285	303
PECO Energy Co
Loss Contingencies [Line Items]
Accrual for Environmental Loss Contingencies, Gross	29	27
Baltimore Gas and Electric Company
Loss Contingencies [Line Items]
Accrual for Environmental Loss Contingencies, Gross	13	14
Pepco Holdings LLC
Loss Contingencies [Line Items]
Accrual for Environmental Loss Contingencies, Gross	75	81
Potomac Electric Power Company
Loss Contingencies [Line Items]
Accrual for Environmental Loss Contingencies, Gross	73	79
Delmarva Power & Light Company
Loss Contingencies [Line Items]
Accrual for Environmental Loss Contingencies, Gross	1	1
Atlantic City Electric Company
Loss Contingencies [Line Items]
Accrual for Environmental Loss Contingencies, Gross	1	1
Accrual For MGP Investigation And Remediation [Member]
Loss Contingencies [Line Items]
Accrual for Environmental Loss Contingencies, Gross	322	338
Accrual For MGP Investigation And Remediation [Member] | Commonwealth Edison Co
Loss Contingencies [Line Items]
Accrual for Environmental Loss Contingencies, Gross	284	302
Accrual For MGP Investigation And Remediation [Member] | PECO Energy Co
Loss Contingencies [Line Items]
Accrual for Environmental Loss Contingencies, Gross	28	25
Accrual For MGP Investigation And Remediation [Member] | Baltimore Gas and Electric Company
Loss Contingencies [Line Items]
Accrual for Environmental Loss Contingencies, Gross	10	11
Accrual For MGP Investigation And Remediation [Member] | Pepco Holdings LLC
Loss Contingencies [Line Items]
Accrual for Environmental Loss Contingencies, Gross	0	0
Accrual For MGP Investigation And Remediation [Member] | Potomac Electric Power Company
Loss Contingencies [Line Items]
Accrual for Environmental Loss Contingencies, Gross	0	0
Accrual For MGP Investigation And Remediation [Member] | Delmarva Power & Light Company
Loss Contingencies [Line Items]
Accrual for Environmental Loss Contingencies, Gross	0	0
Accrual For MGP Investigation And Remediation [Member] | Atlantic City Electric Company
Loss Contingencies [Line Items]
Accrual for Environmental Loss Contingencies, Gross	$ 0	$ 0

Shareholders' Equity - Narrativ

Shareholders' Equity - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended	3 Months Ended		12 Months Ended
	Aug. 11, 2022	Dec. 06, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Aug. 04, 2022
Schedule of Capitalization, Equity [Line Items]
Issuance of common stock (in shares)					3,989,000	3,587,000	12,995,000
Common stock (in usd per share)								$ 0
Share Price								$ 43.32
Proceeds from Issuance or Sale of Equity				$ 563
Proceeds from (repayments of) debt	$ 575
Equity Distribution Agreement					$ 708			$ 1,000
Issuance of common stock					$ 148	$ 140	$ 563
Stock Repurchase Program, Number of Shares Authorized to be Repurchased					0
Equity Distribution Agreement
Schedule of Capitalization, Equity [Line Items]
Issuance of common stock (in shares)		3,600,000
Share Price		$ 39.58	$ 37.60
Issuance of common stock		$ 140	$ 148
Equity Distribution Agreement | 2024
Schedule of Capitalization, Equity [Line Items]
Issuance of common stock (in shares)			4,000,000
Corporate, Non-Segment
Schedule of Capitalization, Equity [Line Items]
Issuance of common stock					$ 148	$ 140	563
Corporate, Non-Segment | ShortTermDebtSOFRplus075Jan2023
Schedule of Capitalization, Equity [Line Items]
Short-term loans				$ 1,150			$ 1,150
Initial Equity Securities Offering
Schedule of Capitalization, Equity [Line Items]
Issuance of common stock (in shares)				11,300,000
Additional Equity Securities Offering
Schedule of Capitalization, Equity [Line Items]
Issuance of common stock (in shares)				1,695,000

Shareholders' Equity - Schedule

Shareholders' Equity - Schedule of Common Stock Warrants (Details) - Commonwealth Edison Co - shares	Dec. 31, 2024	Dec. 31, 2023
Class of Warrant or Right [Line Items]
Class of Warrant or Right, Outstanding	59,970	60,032
Common Stock
Class of Warrant or Right [Line Items]
Common Stock Shares Reserved For Warrant Conversion	19,990	20,011

Shareholders' Equity - Schedu_2

Shareholders' Equity - Schedule of Preferred Stock (Details) - $ / shares	Dec. 31, 2024	Dec. 31, 2023
Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock, Shares Outstanding	0	0
Preferred Stock, Shares Authorized	100,000,000	100,000,000
Preferred Stock [Member] | Commonwealth Edison Co
Class of Stock [Line Items]
Preferred Stock, Shares Outstanding	0	0
Preferred Stock, Shares Authorized	850,000	850,000
Preferred Stock [Member] | PECO Energy Co
Class of Stock [Line Items]
Preferred Stock, Shares Outstanding	0	0
Preferred Stock, Shares Authorized	15,000,000	15,000,000
Preferred Stock [Member] | Baltimore Gas and Electric Company
Class of Stock [Line Items]
Preferred Stock, Shares Outstanding	0	0
Preferred Stock, Shares Authorized	1,000,000	1,000,000
Preferred Stock [Member] | Potomac Electric Power Company
Class of Stock [Line Items]
Preferred Stock, Shares Outstanding	0	0
Preferred Stock, Shares Authorized	6,000,000	6,000,000
Preferred Stock [Member] | Atlantic City Electric Company
Class of Stock [Line Items]
Preferred Stock, Shares Outstanding	0	0
Preferred Stock, Shares Authorized	2,799,979	2,799,979
Preferred Stock [Member] | Delmarva Power & Light Company
Class of Stock [Line Items]
Preferred Stock, Shares Authorized	0	0
Cumulative Preferred Stock [Member] | Atlantic City Electric Company
Class of Stock [Line Items]
Preferred Stock, Shares Authorized	799,979	799,979
No-Par Preferred Stock [Member] | Atlantic City Electric Company
Class of Stock [Line Items]
Preferred Stock, Shares Authorized	2,000,000	2,000,000
Preferred Stock, Par or Stated Value Per Share	$ 0	$ 0

Shareholders' Equity - Schedu_3

Shareholders' Equity - Schedule of Preference Stock (Details) - shares	Dec. 31, 2024	Dec. 31, 2023
Class of Stock [Line Items]
Preference Stock, Shares Authorized	0	0
Commonwealth Edison Co
Class of Stock [Line Items]
Preference Stock, Shares Outstanding	0	0
Preference Stock, Shares Authorized	6,810,451	6,810,451
Baltimore Gas and Electric Company
Class of Stock [Line Items]
Preference Stock, Shares Outstanding	0	0
Preference Stock, Shares Authorized	6,500,000	6,500,000
Atlantic City Electric Company
Class of Stock [Line Items]
Preference Stock, Shares Outstanding	0	0
Preference Stock, Shares Authorized	3,000,000	3,000,000
PECO Energy Co
Class of Stock [Line Items]
Preference Stock, Shares Authorized	0	0
Potomac Electric Power Company
Class of Stock [Line Items]
Preference Stock, Shares Authorized	0	0
Delmarva Power & Light Company
Class of Stock [Line Items]
Preference Stock, Shares Authorized	0	0
Unclassified Preference Stock [Member] | Baltimore Gas and Electric Company
Class of Stock [Line Items]
Preference Stock, Shares Authorized	4,600,000	4,600,000
Preference Stock Redeemed [Member] | Baltimore Gas and Electric Company
Class of Stock [Line Items]
Preference Stock, Shares Authorized	1,900,000	1,900,000

Stock-Based Compensation Plan_3

Stock-Based Compensation Plans - Narrative (Details) - shares	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Performance Shares
Common Stock Narrative Information [Line Items]
Percentage to be settled as common stock	50%
Percentage to be settled as cash	50%
Vesting period	3 years
Percentage to be settled as cash if ownership requirements are met	100%
Restricted Stock Units (RSUs)
Common Stock Narrative Information [Line Items]
Requisite service period	6 months
Share-based Payment Arrangement, Option
Common Stock Narrative Information [Line Items]
Share-based payment award, options, exercises in period	0	0
Minimum | Restricted Stock Units (RSUs)
Common Stock Narrative Information [Line Items]
Requisite service period	3 years
Maximum | Restricted Stock Units (RSUs)
Common Stock Narrative Information [Line Items]
Requisite service period	5 years
LTIP
Common Stock Narrative Information [Line Items]
Shares authorized (in shares)	32,000,000

Stock-Based Compensation Plan_4

Stock-Based Compensation Plans - Schedule of Stock-based Compensation Expense (Details) - Share-based Payment Arrangement - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense included in Operating and maintenance expense	$ 34	$ 21	$ 41
Income tax benefit	(8)	(5)	(10)
Total after-tax stock-based compensation expense	$ 26	$ 16	$ 31

Stock-Based Compensation Plan_5

Stock-Based Compensation Plans - Components of Tax Benefits from Stock-based Compensation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Performance Shares
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Tax benefit on stock compensation	$ 9	$ 8	$ 6
Restricted Stock Units (RSUs)
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Tax benefit on stock compensation	$ 4	$ 6	$ 6

Stock-Based Compensation Plan_6

Stock-Based Compensation Plans - Summary of Performance Share Awards Activity (Details) - Performance Shares - $ / shares	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Shares
Beginning Balance (in shares)	958,242
Granted (in shares)	679,683
Change in performance (in shares)	(131,794)
Vested (in shares)	(311,971)
Forfeited (in shares)	(86,359)
Undistributed vested awards (in shares)	(496,276)
Ending Balance (in shares)	611,525	958,242
Weighted Average Grant Date Fair Value (per share)
Beginning Balance (in usd per share)	$ 42.01
Granted (in usd per share)	35.29	$ 41.82	$ 43.05
Change in performance (in usd per share)	40.38
Vested (in usd per share)	41.25
Forfeited (in usd per share)	37.80
Undistributed vested awards (in usd per share)	37.34
Ending Balance (in usd per share)	$ 39.66	$ 42.01
Fully vested stock based compensation issued to retirement eligible employees (in shares)	635,526	1,198,093

Stock-Based Compensation Plan_7

Stock-Based Compensation Plans - Summary of Weighted Average Fair Value (Details) - Performance Shares - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant date fair value (per share)	$ 35.29	$ 41.82	$ 43.05
Total fair value of performance shares vested	$ 27	$ 17	$ 29
Total fair value of performance shares settled in cash	27	$ 26	$ 25
Unrecognized compensation costs	$ 8
Period for recognition	1 year 8 months 12 days

Stock-Based Compensation Plan_8

Stock-Based Compensation Plans - Summary of Nonvested Restricted Stock Unit Activity (Details) - Restricted Stock Units (RSUs) - $ / shares	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Shares
Beginning Balance (in shares)	531,945
Granted (in shares)	361,745
Vested (in shares)	(309,500)
Forfeited (in shares)	(31,466)
Undistributed vested awards (in shares)	(259,135)
Ending Balance (in shares)	293,589	531,945
Weighted Average Grant Date Fair Value (per share)
Beginning Balance (in usd per share)	$ 42.87
Granted (in usd per share)	35.54	$ 41.84	$ 42.97
Vested (in usd per share)	42.79
Forfeited (in usd per share)	40.07
Undistributed vested awards (in usd per share)	37.16
Ending Balance (in usd per share)	$ 39.29	$ 42.87
Fully vested stock based compensation issued to retirement eligible employees (in shares)	126,732	205,855

Stock-Based Compensation Plan_9

Stock-Based Compensation Plans - Summary of Weighted Average Restricted Stock Unit Activity (Details) - Restricted Stock Units (RSUs) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in usd per share)	$ 35.54	$ 41.84	$ 42.97
Total fair value of restricted stock units vested	$ 21	$ 15	$ 23
Unrecognized compensation costs	$ 5
Period for recognition	1 year 6 months

Stock-Based Compensation Pla_10

Stock-Based Compensation Plans - Summary of Stock Option Exercised (Details) - Share-based Payment Arrangement - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate value	$ 0	$ 0	$ 0
Cash received for exercise price	$ 0	$ 0	$ 1

Changes in Accumulated Other _3

Changes in Accumulated Other Comprehensive Income - Schedule of Changes in AOCI (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Movement in Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	$ 25,755	$ 24,744	$ 34,795
Other comprehensive income (loss)	6	(88)	89
Ending Balance	26,921	25,755	24,744
Cash Flow Hedges
Movement in Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	(3)	2	(6)
OCI before reclassifications	52	(4)	2
Amounts reclassified from AOCI	(4)	(1)	0
Other comprehensive income (loss)	48	(5)	2
Ending Balance	45	(3)	2
Cash Flow Hedges | Exelon Generation Co L L C
Movement in Accumulated Other Comprehensive Income [Roll Forward]
Other comprehensive income (loss)			6
Pension and Non-Pension Postretirement Benefit Plan Items (a)
Movement in Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	(723)	(640)	(2,721)
OCI before reclassifications	(70)	(109)	46
Amounts reclassified from AOCI	28	26	41
Other comprehensive income (loss)	(42)	(83)	87
Ending Balance	(765)	(723)	(640)
Pension and Non-Pension Postretirement Benefit Plan Items (a) | Exelon Generation Co L L C
Movement in Accumulated Other Comprehensive Income [Roll Forward]
Other comprehensive income (loss)			1,994
Foreign Currency Items
Movement in Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	0	0	(23)
OCI before reclassifications	0	0	0
Amounts reclassified from AOCI	0	0	0
Other comprehensive income (loss)	0	0	0
Ending Balance	0	0	0
Foreign Currency Items | Exelon Generation Co L L C
Movement in Accumulated Other Comprehensive Income [Roll Forward]
Other comprehensive income (loss)			23
Total
Movement in Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	(726)	(638)	(2,750)
OCI before reclassifications	(18)	(113)	48
Amounts reclassified from AOCI	24	25	41
Other comprehensive income (loss)	6	(88)	89
Ending Balance	$ (720)	$ (726)	(638)
Total | Exelon Generation Co L L C
Movement in Accumulated Other Comprehensive Income [Roll Forward]
Other comprehensive income (loss)			$ 2,023

Changes in Accumulated Other _4

Changes in Accumulated Other Comprehensive Income - Income Taxes Allocated to Other Comprehensive Income (Loss) Components (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Actuarial losses
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Tax	$ (10)	$ (8)	$ (14)
Pension and Non-Pension Postretirement Benefit Plan Items (a)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Tax	23	33	(14)
Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Tax	$ (15)	$ 2	$ 0

Supplemental Financial Inform_3

Supplemental Financial Information - Summary of Taxes other than income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Supplemental Statement of Operations Information [Line Items]
Utility	$ 925	$ 875	$ 878
Property	431	401	377
Payroll	134	124	117
Commonwealth Edison Co
Supplemental Statement of Operations Information [Line Items]
Utility	300	299	306
Property	32	33	31
Payroll	37	31	28
PECO Energy Co
Supplemental Statement of Operations Information [Line Items]
Utility	179	166	166
Property	19	16	17
Payroll	17	17	16
Baltimore Gas and Electric Company
Supplemental Statement of Operations Information [Line Items]
Utility	105	97	94
Property	221	205	191
Payroll	19	18	17
Pepco Holdings LLC
Supplemental Statement of Operations Information [Line Items]
Utility	341	313	312
Property	159	147	138
Payroll	28	27	25
Potomac Electric Power Company
Supplemental Statement of Operations Information [Line Items]
Utility	310	283	283
Property	108	101	94
Payroll	6	6	6
Delmarva Power & Light Company
Supplemental Statement of Operations Information [Line Items]
Utility	27	26	25
Property	48	44	42
Payroll	4	5	4
Atlantic City Electric Company
Supplemental Statement of Operations Information [Line Items]
Utility	4	4	4
Property	3	2	2
Payroll	$ 3	$ 3	$ 3

Supplemental Financial Inform_4

Supplemental Financial Information - Summary of Other Income (Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Other, Net [Abstract]
AFUDC—Equity	$ 157	$ 151	$ 150
Non-service net periodic benefit cost	(38)	(18)	63
Commonwealth Edison Co
Other, Net [Abstract]
AFUDC—Equity	46	33	35
Non-service net periodic benefit cost	0	0	0
PECO Energy Co
Other, Net [Abstract]
AFUDC—Equity	32	31	31
Non-service net periodic benefit cost	0	0	0
Baltimore Gas and Electric Company
Other, Net [Abstract]
AFUDC—Equity	25	16	21
Non-service net periodic benefit cost	0	0	0
Pepco Holdings LLC
Other, Net [Abstract]
AFUDC—Equity	54	71	63
Non-service net periodic benefit cost	0	0	0
Potomac Electric Power Company
Other, Net [Abstract]
AFUDC—Equity	40	54	48
Non-service net periodic benefit cost	0	0	0
Delmarva Power & Light Company
Other, Net [Abstract]
AFUDC—Equity	12	10	7
Non-service net periodic benefit cost	0	0	0
Atlantic City Electric Company
Other, Net [Abstract]
AFUDC—Equity	2	7	8
Non-service net periodic benefit cost	$ 0	$ 0	$ 0

Supplemental Financial Inform_5

Supplemental Financial Information - Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Depreciation, amortization and accretion
Depreciation	$ 2,910	$ 2,778	$ 2,690
Amortization of Regulatory Asset	676	720	718
Amortization of Intangible Assets	1	1	182
Amortization of Nuclear Fuel Lease			66
Accretion expense	2		44
Total depreciation, amortization and accretion	3,596	3,506	3,533
Cash paid (refunded) during the year:
Interest (net of amount capitalized)	1,849	1,616	1,434
Income taxes (net of refunds)	81	10	73
Other non-cash operating activities:
Pension and non-pension postretirement benefit costs	252	198	164
Provision for uncollectible accounts	208	125	173
Other decommissioning related-activity			36
Energy-related options			60
True-up Adjustments to Decoupling Mechanisms and Formula Rate	92	(696)	(161)
Long-term incentive plan			42
Operating Leases, Income Statement, Depreciation Expense on Property Subject to or Held-for-lease	38	39	56
Change in environmental liabilities	0	37
Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity	(157)	(151)	(150)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract]
Cash and cash equivalents	357	445	407	$ 672
Restricted cash	541	482	566	321
Restricted cash included in other long-term assets	41	174	117	44
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Disposal Group, Including Discontinued Operations				582
Total cash, cash equivalents and restricted cash	939	1,101	1,090	1,619
Other Non-Cash
Other non-cash operating activities:
True-up Adjustments to Decoupling Mechanisms and Formula Rate	109	(708)	(168)
Return on borrowed funds
Other non-cash operating activities:
Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity	(157)	(151)	(150)
Commonwealth Edison Co
Depreciation, amortization and accretion
Depreciation	1,167	1,095	1,031
Amortization of Regulatory Asset	347	308	292
Amortization of Nuclear Fuel Lease			0
Accretion expense	0		0
Total depreciation, amortization and accretion	1,514	1,403	1,323
Cash paid (refunded) during the year:
Interest (net of amount capitalized)	485	441	396
Income taxes (net of refunds)	250	11	23
Other non-cash operating activities:
Pension and non-pension postretirement benefit costs	72	26	60
Provision for uncollectible accounts	23	4	46
Other decommissioning related-activity			0
Energy-related options			0
True-up Adjustments to Decoupling Mechanisms and Formula Rate	151	(556)	(267)
Long-term incentive plan			0
Operating Leases, Income Statement, Depreciation Expense on Property Subject to or Held-for-lease	0	2	2
Change in environmental liabilities	0	0
Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity	(46)	(33)	(35)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract]
Cash and cash equivalents	105	110	67	131
Restricted cash	486	402	327	210
Restricted cash included in other long-term assets	41	174	117	43
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Disposal Group, Including Discontinued Operations				0
Total cash, cash equivalents and restricted cash	632	686	511	384
Commonwealth Edison Co | Other Non-Cash
Other non-cash operating activities:
True-up Adjustments to Decoupling Mechanisms and Formula Rate	151	(556)	(267)
Commonwealth Edison Co | Return on borrowed funds
Other non-cash operating activities:
Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity	(46)	(33)	(35)
PECO Energy Co
Depreciation, amortization and accretion
Depreciation	414	383	359
Amortization of Regulatory Asset	14	14	14
Amortization of Nuclear Fuel Lease			0
Accretion expense	0		0
Total depreciation, amortization and accretion	428	397	373
Cash paid (refunded) during the year:
Interest (net of amount capitalized)	218	200	166
Income taxes (net of refunds)	128	(24)	31
Other non-cash operating activities:
Pension and non-pension postretirement benefit costs	(1)	(14)	(9)
Provision for uncollectible accounts	91	45	45
Other decommissioning related-activity			0
Energy-related options			0
True-up Adjustments to Decoupling Mechanisms and Formula Rate	(6)	7	(2)
Long-term incentive plan			0
Operating Leases, Income Statement, Depreciation Expense on Property Subject to or Held-for-lease	0	0	0
Change in environmental liabilities	0	0
Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity	(32)	(31)	(31)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract]
Cash and cash equivalents	48	42	59	36
Restricted cash	0	9	9	8
Restricted cash included in other long-term assets	0	0	0	0
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Disposal Group, Including Discontinued Operations				0
Total cash, cash equivalents and restricted cash	48	51	68	44
PECO Energy Co | Other Non-Cash
Other non-cash operating activities:
True-up Adjustments to Decoupling Mechanisms and Formula Rate	(6)	7	(2)
PECO Energy Co | Return on borrowed funds
Other non-cash operating activities:
Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity	(32)	(31)	(31)
Baltimore Gas and Electric Company
Depreciation, amortization and accretion
Depreciation	490	509	476
Amortization of Regulatory Asset	148	145	154
Amortization of Nuclear Fuel Lease			0
Accretion expense	0		0
Total depreciation, amortization and accretion	638	654	630
Cash paid (refunded) during the year:
Interest (net of amount capitalized)	198	171	147
Income taxes (net of refunds)	100	29	16
Other non-cash operating activities:
Pension and non-pension postretirement benefit costs	59	56	44
Provision for uncollectible accounts	25	16	25
Other decommissioning related-activity			0
Energy-related options			0
True-up Adjustments to Decoupling Mechanisms and Formula Rate	(52)	(84)	47
Long-term incentive plan			0
Operating Leases, Income Statement, Depreciation Expense on Property Subject to or Held-for-lease	6	5	14
Change in environmental liabilities	0	0
Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity	(25)	(16)	(21)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract]
Cash and cash equivalents	33	47	43	51
Restricted cash	1	1	24	4
Restricted cash included in other long-term assets	0	0	0	0
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Disposal Group, Including Discontinued Operations				0
Total cash, cash equivalents and restricted cash	34	48	67	55
Baltimore Gas and Electric Company | Other Non-Cash
Other non-cash operating activities:
True-up Adjustments to Decoupling Mechanisms and Formula Rate	(52)	(84)	47
Baltimore Gas and Electric Company | Return on borrowed funds
Other non-cash operating activities:
Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity	(25)	(16)	(21)
Pepco Holdings LLC
Depreciation, amortization and accretion
Depreciation	782	737	680
Amortization of Regulatory Asset	164	253	258
Amortization of Intangible Assets	9	10	190
Amortization of Nuclear Fuel Lease			0
Accretion expense	1		0
Total depreciation, amortization and accretion	947	990	938
Cash paid (refunded) during the year:
Interest (net of amount capitalized)	355	301	274
Income taxes (net of refunds)	150	21	19
Other non-cash operating activities:
Pension and non-pension postretirement benefit costs	93	99	53
Provision for uncollectible accounts	69	60	58
Other decommissioning related-activity			0
Energy-related options			0
True-up Adjustments to Decoupling Mechanisms and Formula Rate	(1)	(64)	59
Long-term incentive plan			0
Operating Leases, Income Statement, Depreciation Expense on Property Subject to or Held-for-lease	26	28	27
Change in environmental liabilities	0	37
Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity	(54)	(71)	(63)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract]
Cash and cash equivalents	139	180	198	136
Restricted cash	24	24	175	77
Restricted cash included in other long-term assets	0	0	0	0
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Disposal Group, Including Discontinued Operations				0
Total cash, cash equivalents and restricted cash	163	204	373	213
Pepco Holdings LLC | Other Non-Cash
Other non-cash operating activities:
True-up Adjustments to Decoupling Mechanisms and Formula Rate	16	(77)	54
Pepco Holdings LLC | Return on borrowed funds
Other non-cash operating activities:
Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity	(54)	(71)	(63)
Potomac Electric Power Company
Depreciation, amortization and accretion
Depreciation	336	311	288
Amortization of Regulatory Asset	70	130	129
Amortization of Nuclear Fuel Lease			0
Accretion expense	1		0
Total depreciation, amortization and accretion	407	441	417
Cash paid (refunded) during the year:
Interest (net of amount capitalized)	183	153	141
Income taxes (net of refunds)	96	6	28
Other non-cash operating activities:
Pension and non-pension postretirement benefit costs	32	34	9
Provision for uncollectible accounts	30	33	29
Other decommissioning related-activity			0
Energy-related options			0
True-up Adjustments to Decoupling Mechanisms and Formula Rate	(15)	(22)	31
Long-term incentive plan			0
Operating Leases, Income Statement, Depreciation Expense on Property Subject to or Held-for-lease	6	6	7
Change in environmental liabilities	0	37
Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity	(40)	(54)	(48)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract]
Cash and cash equivalents	30	48	45	34
Restricted cash	21	24	54	34
Restricted cash included in other long-term assets	0	0	0	0
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Disposal Group, Including Discontinued Operations				0
Total cash, cash equivalents and restricted cash	51	72	99	68
Potomac Electric Power Company | Other Non-Cash
Other non-cash operating activities:
True-up Adjustments to Decoupling Mechanisms and Formula Rate	(15)	(22)	31
Potomac Electric Power Company | Return on borrowed funds
Other non-cash operating activities:
Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity	(40)	(54)	(48)
Delmarva Power & Light Company
Depreciation, amortization and accretion
Depreciation	218	208	191
Amortization of Regulatory Asset	27	36	41
Amortization of Nuclear Fuel Lease			0
Accretion expense	0		0
Total depreciation, amortization and accretion	245	244	232
Cash paid (refunded) during the year:
Interest (net of amount capitalized)	89	69	63
Income taxes (net of refunds)	57	6	(2)
Other non-cash operating activities:
Pension and non-pension postretirement benefit costs	15	18	3
Provision for uncollectible accounts	10	10	12
Other decommissioning related-activity			0
Energy-related options			0
True-up Adjustments to Decoupling Mechanisms and Formula Rate	2	(15)	9
Long-term incentive plan			0
Operating Leases, Income Statement, Depreciation Expense on Property Subject to or Held-for-lease	6	8	8
Change in environmental liabilities	0	0
Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity	(12)	(10)	(7)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract]
Cash and cash equivalents	21	16	31	28
Restricted cash	2	0	121	43
Restricted cash included in other long-term assets	0	0	0	0
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Disposal Group, Including Discontinued Operations
Total cash, cash equivalents and restricted cash	23	16	152	71
Delmarva Power & Light Company | Other Non-Cash
Other non-cash operating activities:
True-up Adjustments to Decoupling Mechanisms and Formula Rate	10	(21)	7
Delmarva Power & Light Company | Return on borrowed funds
Other non-cash operating activities:
Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity	(12)	(10)	(7)
Atlantic City Electric Company
Depreciation, amortization and accretion
Depreciation	211	195	173
Amortization of Regulatory Asset	67	88	88
Amortization of Nuclear Fuel Lease			0
Accretion expense	0		0
Total depreciation, amortization and accretion	278	283	261
Cash paid (refunded) during the year:
Interest (net of amount capitalized)	74	68	60
Income taxes (net of refunds)	20	9	(6)
Other non-cash operating activities:
Pension and non-pension postretirement benefit costs	12	13	12
Provision for uncollectible accounts	28	17	16
Other decommissioning related-activity			0
Energy-related options			0
True-up Adjustments to Decoupling Mechanisms and Formula Rate	12	(27)	19
Long-term incentive plan			0
Operating Leases, Income Statement, Depreciation Expense on Property Subject to or Held-for-lease	3	3	3
Change in environmental liabilities	0	0
Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity	(2)	(7)	(8)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract]
Cash and cash equivalents	14	21	72	29
Restricted cash	0	0	0	0
Restricted cash included in other long-term assets	0	0	0	0
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Disposal Group, Including Discontinued Operations
Total cash, cash equivalents and restricted cash	14	21	72	$ 29
Atlantic City Electric Company | Other Non-Cash
Other non-cash operating activities:
True-up Adjustments to Decoupling Mechanisms and Formula Rate	21	(34)	16
Atlantic City Electric Company | Return on borrowed funds
Other non-cash operating activities:
Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity	(2)	(7)	(8)
Other Intangible Assets
Depreciation, amortization and accretion
Amortization of Intangible Assets	8	8	12
Other Intangible Assets | Commonwealth Edison Co
Depreciation, amortization and accretion
Amortization of Intangible Assets	0	0	0
Other Intangible Assets | PECO Energy Co
Depreciation, amortization and accretion
Amortization of Intangible Assets	0	0	0
Other Intangible Assets | Baltimore Gas and Electric Company
Depreciation, amortization and accretion
Amortization of Intangible Assets	0	0	0
Other Intangible Assets | Pepco Holdings LLC
Depreciation, amortization and accretion
Amortization of Intangible Assets	0	0	0
Other Intangible Assets | Potomac Electric Power Company
Depreciation, amortization and accretion
Amortization of Intangible Assets	0	0	0
Other Intangible Assets | Delmarva Power & Light Company
Depreciation, amortization and accretion
Amortization of Intangible Assets	0	0	0
Other Intangible Assets | Atlantic City Electric Company
Depreciation, amortization and accretion
Amortization of Intangible Assets	$ 0	$ 0	0
Unamortized Energy Contracts
Depreciation, amortization and accretion
Amortization of Power Contracts Emission Credits			3
Unamortized Energy Contracts | Commonwealth Edison Co
Depreciation, amortization and accretion
Amortization of Power Contracts Emission Credits			0
Unamortized Energy Contracts | PECO Energy Co
Depreciation, amortization and accretion
Amortization of Power Contracts Emission Credits			0
Unamortized Energy Contracts | Baltimore Gas and Electric Company
Depreciation, amortization and accretion
Amortization of Power Contracts Emission Credits			0
Unamortized Energy Contracts | Pepco Holdings LLC
Depreciation, amortization and accretion
Amortization of Power Contracts Emission Credits			0
Unamortized Energy Contracts | Potomac Electric Power Company
Depreciation, amortization and accretion
Amortization of Power Contracts Emission Credits			0
Unamortized Energy Contracts | Delmarva Power & Light Company
Depreciation, amortization and accretion
Amortization of Power Contracts Emission Credits			0
Unamortized Energy Contracts | Atlantic City Electric Company
Depreciation, amortization and accretion
Amortization of Power Contracts Emission Credits			$ 0

Supplemental Financial Inform_6

Supplemental Financial Information - Supplemental Balance Sheet Information (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Investments [Abstract]
Other investments	$ 15	$ 5
Total Investments	290	251
Accrued Expenses [Abstract]
Compensation-related accruals	679	661
Taxes accrued	217	221
Interest accrued	468	414
Employee benefit trusts and investments
Investments [Abstract]
Employee benefit trusts and investments	260	231
Equity method investments
Investments [Abstract]
Equity method investments	15	15
Commonwealth Edison Co
Investments [Abstract]
Other investments	0	0
Total Investments	6	6
Accrued Expenses [Abstract]
Compensation-related accruals	197	206
Taxes accrued	96	204
Interest accrued	150	148
Commonwealth Edison Co | Employee benefit trusts and investments
Investments [Abstract]
Employee benefit trusts and investments	0	0
Commonwealth Edison Co | Equity method investments
Investments [Abstract]
Equity method investments	6	6
PECO Energy Co
Investments [Abstract]
Other investments	0	0
Total Investments	41	35
Accrued Expenses [Abstract]
Compensation-related accruals	87	87
Taxes accrued	13	96
Interest accrued	60	49
PECO Energy Co | Employee benefit trusts and investments
Investments [Abstract]
Employee benefit trusts and investments	34	28
PECO Energy Co | Equity method investments
Investments [Abstract]
Equity method investments	7	7
Baltimore Gas and Electric Company
Investments [Abstract]
Other investments	0	0
Total Investments	10	9
Accrued Expenses [Abstract]
Compensation-related accruals	88	81
Taxes accrued	34	75
Interest accrued	50	44
Baltimore Gas and Electric Company | Employee benefit trusts and investments
Investments [Abstract]
Employee benefit trusts and investments	10	9
Baltimore Gas and Electric Company | Equity method investments
Investments [Abstract]
Equity method investments	0	0
Pepco Holdings LLC
Investments [Abstract]
Other investments	0	0
Total Investments	152	143
Accrued Expenses [Abstract]
Compensation-related accruals	132	107
Taxes accrued	110	137
Interest accrued	83	72
Pepco Holdings LLC | Employee benefit trusts and investments
Investments [Abstract]
Employee benefit trusts and investments	151	142
Pepco Holdings LLC | Equity method investments
Investments [Abstract]
Equity method investments	1	1
Potomac Electric Power Company
Investments [Abstract]
Other investments	0	0
Total Investments	135	124
Accrued Expenses [Abstract]
Compensation-related accruals	38	27
Taxes accrued	92	116
Interest accrued	44	38
Potomac Electric Power Company | Employee benefit trusts and investments
Investments [Abstract]
Employee benefit trusts and investments	135	124
Potomac Electric Power Company | Equity method investments
Investments [Abstract]
Equity method investments	0	0
Delmarva Power & Light Company
Accrued Expenses [Abstract]
Compensation-related accruals	26	17
Taxes accrued	11	30
Interest accrued	16	13
Atlantic City Electric Company
Accrued Expenses [Abstract]
Compensation-related accruals	18	12
Taxes accrued	11	10
Interest accrued	$ 18	$ 15

Related Party Transactions - Op

Related Party Transactions - Operating Revenues and Purchased Power and Fuel From Affiliates (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)
PECO Energy Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Agreement Term	10 years
Exelon Generation Co L L C | Commonwealth Edison Co Affiliate
Related Party Transaction [Line Items]
Revenue from Related Parties	$ 59
Exelon Generation Co L L C | PECO Energy Co Affiliate
Related Party Transaction [Line Items]
Revenue from Related Parties	33
Exelon Generation Co L L C | Baltimore Gas And Electric Company Affiliate
Related Party Transaction [Line Items]
Revenue from Related Parties	18
Exelon Generation Co L L C | Pepco Holdings LLC Affiliate
Related Party Transaction [Line Items]
Revenue from Related Parties	51
Exelon Generation Co L L C | Potomac Electric Power Co Affiliate
Related Party Transaction [Line Items]
Revenue from Related Parties	39
Exelon Generation Co L L C | Delmarva Power and Light Co Affiliate
Related Party Transaction [Line Items]
Revenue from Related Parties	10
Exelon Generation Co L L C | Atlantic City Electric Co Affiliate
Related Party Transaction [Line Items]
Revenue from Related Parties	$ 2

Related Party Transactions - BS

Related Party Transactions - BSC and PHISCO Service Companies (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Exelon Business Services Co Affiliate
Related Party Transaction [Line Items]
Capitalized costs	$ 633	$ 670	$ 707
PHI Service Co Affiliate
Related Party Transaction [Line Items]
Capitalized costs	114	96	80
Commonwealth Edison Co | Exelon Business Services Co Affiliate
Related Party Transaction [Line Items]
Operating and maintenance from affiliates	418	353	316
Capitalized costs	254	307	311
PECO Energy Co | Exelon Business Services Co Affiliate
Related Party Transaction [Line Items]
Operating and maintenance from affiliates	243	213	197
Capitalized costs	112	120	115
Baltimore Gas and Electric Company | Exelon Business Services Co Affiliate
Related Party Transaction [Line Items]
Operating and maintenance from affiliates	246	221	204
Capitalized costs	110	90	122
Pepco Holdings LLC | Exelon Business Services Co Affiliate
Related Party Transaction [Line Items]
Operating and maintenance from affiliates	200	177	188
Capitalized costs	157	153	159
Pepco Holdings LLC | PHI Service Co Affiliate
Related Party Transaction [Line Items]
Operating and maintenance from affiliates	0	0	0
Capitalized costs	114	95	80
Potomac Electric Power Company | Exelon Business Services Co Affiliate
Related Party Transaction [Line Items]
Operating and maintenance from affiliates	125	114	110
Capitalized costs	70	59	60
Potomac Electric Power Company | PHI Service Co Affiliate
Related Party Transaction [Line Items]
Operating and maintenance from affiliates	125	122	112
Capitalized costs	50	39	33
Delmarva Power & Light Company | Exelon Business Services Co Affiliate
Related Party Transaction [Line Items]
Operating and maintenance from affiliates	78	73	71
Capitalized costs	49	43	45
Delmarva Power & Light Company | PHI Service Co Affiliate
Related Party Transaction [Line Items]
Operating and maintenance from affiliates	103	98	96
Capitalized costs	34	29	26
Atlantic City Electric Company | Exelon Business Services Co Affiliate
Related Party Transaction [Line Items]
Operating and maintenance from affiliates	64	59	57
Capitalized costs	32	47	54
Atlantic City Electric Company | PHI Service Co Affiliate
Related Party Transaction [Line Items]
Operating and maintenance from affiliates	97	92	84
Capitalized costs	$ 30	$ 26	$ 21

Related Party Transactions - Cu

Related Party Transactions - Current Receivables From/Payables To Affiliates (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Related Party
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	$ 281	$ 251
Accounts payable	5	5
Commonwealth Edison Co | PECO Energy Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
Commonwealth Edison Co | Baltimore Gas And Electric Company Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
Commonwealth Edison Co | Pepco Holdings LLC Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
Commonwealth Edison Co | Potomac Electric Power Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
Commonwealth Edison Co | Delmarva Power and Light Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
Commonwealth Edison Co | Atlantic City Electric Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
Commonwealth Edison Co | Other Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	4	3
Commonwealth Edison Co | Affiliated Entities
Related Party Transaction [Line Items]
Accounts payable	77	72
Commonwealth Edison Co | Related Party
Related Party Transaction [Line Items]
Accounts payable	77	72
Receivable from affiliates	4	3
PECO Energy Co | Commonwealth Edison Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
PECO Energy Co | Baltimore Gas And Electric Company Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
PECO Energy Co | Pepco Holdings LLC Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
PECO Energy Co | Potomac Electric Power Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
PECO Energy Co | Delmarva Power and Light Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	1
PECO Energy Co | Atlantic City Electric Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	1
PECO Energy Co | Other Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
PECO Energy Co | Affiliated Entities
Related Party Transaction [Line Items]
Accounts payable	41	39
PECO Energy Co | Related Party
Related Party Transaction [Line Items]
Accounts payable	41	39
Receivable from affiliates	0	2
Baltimore Gas and Electric Company | Commonwealth Edison Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
Baltimore Gas and Electric Company | PECO Energy Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
Baltimore Gas and Electric Company | Pepco Holdings LLC Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
Baltimore Gas and Electric Company | Potomac Electric Power Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current		0
Baltimore Gas and Electric Company | Delmarva Power and Light Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
Baltimore Gas and Electric Company | Atlantic City Electric Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
Baltimore Gas and Electric Company | Other Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
Baltimore Gas and Electric Company | Affiliated Entities
Related Party Transaction [Line Items]
Accounts payable	48	35
Baltimore Gas and Electric Company | Related Party
Related Party Transaction [Line Items]
Accounts payable	48	35
Receivable from affiliates	0	0
Pepco Holdings LLC | Affiliated Entities
Related Party Transaction [Line Items]
Accounts payable	18	15
Pepco Holdings LLC | Related Party
Related Party Transaction [Line Items]
Accounts payable	66	59
Receivable from affiliates	8	3
Potomac Electric Power Company | Commonwealth Edison Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
Potomac Electric Power Company | PECO Energy Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
Potomac Electric Power Company | Baltimore Gas And Electric Company Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
Potomac Electric Power Company | Pepco Holdings LLC Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
Potomac Electric Power Company | Delmarva Power and Light Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
Potomac Electric Power Company | Atlantic City Electric Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	1
Potomac Electric Power Company | Other Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	1	1
Potomac Electric Power Company | Affiliated Entities
Related Party Transaction [Line Items]
Accounts payable	37	32
Potomac Electric Power Company | Related Party
Related Party Transaction [Line Items]
Accounts payable	37	32
Receivable from affiliates	1	2
Delmarva Power & Light Company | Commonwealth Edison Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
Delmarva Power & Light Company | PECO Energy Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
Delmarva Power & Light Company | Baltimore Gas And Electric Company Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
Delmarva Power & Light Company | Pepco Holdings LLC Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
Delmarva Power & Light Company | Potomac Electric Power Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
Delmarva Power & Light Company | Atlantic City Electric Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	1
Delmarva Power & Light Company | Other Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
Delmarva Power & Light Company | Affiliated Entities
Related Party Transaction [Line Items]
Accounts payable	26	25
Delmarva Power & Light Company | Related Party
Related Party Transaction [Line Items]
Accounts payable	26	25
Receivable from affiliates	0	1
Atlantic City Electric Company | Commonwealth Edison Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
Atlantic City Electric Company | PECO Energy Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
Atlantic City Electric Company | Baltimore Gas And Electric Company Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
Atlantic City Electric Company | Pepco Holdings LLC Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
Atlantic City Electric Company | Potomac Electric Power Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
Atlantic City Electric Company | Delmarva Power and Light Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
Atlantic City Electric Company | Other Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	7	3
Atlantic City Electric Company | Affiliated Entities
Related Party Transaction [Line Items]
Accounts payable	22	25
Atlantic City Electric Company | Related Party
Related Party Transaction [Line Items]
Accounts payable	22	25
Receivable from affiliates	7	3
Software License | Commonwealth Edison Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	67	64
Software License | PECO Energy Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	37	36
Software License | Baltimore Gas And Electric Company Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	47	33
Software License | Pepco Holdings LLC Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	7	5
Software License | Potomac Electric Power Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	21	17
Software License | Delmarva Power and Light Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	14	12
Software License | Atlantic City Electric Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	11	11
Software License | Other Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	1
Software License | Related Party
Related Party Transaction [Line Items]
Receivable from affiliates	204	179
PHI Service Company | Commonwealth Edison Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
PHI Service Company | PECO Energy Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
PHI Service Company | Baltimore Gas And Electric Company Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
PHI Service Company | Pepco Holdings LLC Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	1	0
PHI Service Company | Potomac Electric Power Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	15	14
PHI Service Company | Delmarva Power and Light Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	11	11
PHI Service Company | Atlantic City Electric Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	10	11
PHI Service Company | Other Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	0	0
PHI Service Company | Related Party
Related Party Transaction [Line Items]
Receivable from affiliates	37	36
Other Legal Entities | Commonwealth Edison Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	10	8
Other Legal Entities | PECO Energy Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	4	3
Other Legal Entities | Baltimore Gas And Electric Company Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	1	2
Other Legal Entities | Pepco Holdings LLC Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	10	10
Other Legal Entities | Potomac Electric Power Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	1	1
Other Legal Entities | Delmarva Power and Light Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	1	1
Other Legal Entities | Atlantic City Electric Co Affiliate
Related Party Transaction [Line Items]
Related Party Transaction, Due from (to) Related Party, Current	1	0
Other Legal Entities | Affiliated Entities
Related Party Transaction [Line Items]
Accounts payable	12	8
Other Legal Entities | Related Party
Related Party Transaction [Line Items]
Receivable from affiliates	$ 28	$ 25

Related Party Transactions - Lo

Related Party Transactions - Long Term Debt to Financing Trusts (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
ComEd Financing III Affiliate
Related Party Transaction [Line Items]
Long-term debt	$ 206	$ 206
PECO Trust III Affiliate
Related Party Transaction [Line Items]
Long-term debt	81	81
PECO Trust IV Affiliate
Related Party Transaction [Line Items]
Long-term debt	103	103
Related Party
Related Party Transaction [Line Items]
Long-term debt	390	390
Commonwealth Edison Co | ComEd Financing III Affiliate
Related Party Transaction [Line Items]
Long-term debt	206	205
Commonwealth Edison Co | PECO Trust III Affiliate
Related Party Transaction [Line Items]
Long-term debt	0	0
Commonwealth Edison Co | PECO Trust IV Affiliate
Related Party Transaction [Line Items]
Long-term debt	0	0
Commonwealth Edison Co | Related Party
Related Party Transaction [Line Items]
Long-term debt	206	205
PECO Energy Co | ComEd Financing III Affiliate
Related Party Transaction [Line Items]
Long-term debt	0	0
PECO Energy Co | PECO Trust III Affiliate
Related Party Transaction [Line Items]
Long-term debt	81	81
PECO Energy Co | PECO Trust IV Affiliate
Related Party Transaction [Line Items]
Long-term debt	103	103
PECO Energy Co | Related Party
Related Party Transaction [Line Items]
Long-term debt	$ 184	$ 184

Schedule I - Condensed Financ_2

Schedule I - Condensed Financial Information of Parent (Exelon Corporate) - Condensed Statements of Operations and Other Comprehensive Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating Expenses [Abstract]
Total operating expenses	$ 18,721	$ 17,714	$ 15,761
Operating income	4,319	4,023	3,315
Other income and (deductions)
Other, net	262	408	535
Total other income and (deductions)	(1,652)	(1,321)	(912)
Income taxes	207	374	349
Net income from continuing operations after income taxes	2,460	2,328	2,054
Net income from discontinued operations after income taxes	0	0	117
Net income	2,460	2,328	2,171
Other comprehensive income (loss), net of income taxes
Prior service benefit reclassified to periodic cost	0	0	(1)
Actuarial loss reclassified to periodic cost	28	26	42
Pension and non-pension postretirement benefit plans valuation adjustments	(70)	(109)	46
Unrealized gain (loss) on cash flow hedges	48	(5)	2
Other comprehensive loss, net of income taxes	6	(88)	89
Comprehensive income	2,466	2,240	2,259
Corporate, Non-Segment
Operating Expenses [Abstract]
Operating and maintenance	7	88	25
Other	1	1	2
Total operating expenses	16	96	31
Operating income	(16)	(96)	(31)
Other income and (deductions)
Interest expense, net	593	544	413
Equity in earnings (losses) of investments	2,887	2,728	2,450
Other, net	22	19	22
Total other income and (deductions)	2,331	2,212	2,064
Income before income taxes	2,315	2,116	2,033
Income taxes	(145)	(212)	(21)
Net income from continuing operations after income taxes	2,460	2,328	2,054
Net income from discontinued operations after income taxes	0	0	116
Net income	2,460	2,328	2,170
Other comprehensive income (loss), net of income taxes
Prior service benefit reclassified to periodic cost	0	0	(1)
Actuarial loss reclassified to periodic cost	28	26	42
Pension and non-pension postretirement benefit plans valuation adjustments	(70)	(109)	46
Unrealized gain (loss) on cash flow hedges	48	(5)	2
Other comprehensive loss, net of income taxes	6	(88)	89
Comprehensive income	2,466	2,240	2,259
Corporate, Non-Segment | Related Party
Operating Expenses [Abstract]
Operating and maintenance from affiliates	8	7	4
Other income and (deductions)
Interest Income from affiliates, net	$ 15	$ 9	$ 5

Schedule I - Condensed Financ_3

Schedule I - Condensed Financial Information of Parent (Exelon Corporate) - Condensed Statements of Cash Flows (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Condensed Cash Flow Statements, Captions [Line Items]
Net cash flows provided by operating activities	$ 5,569	$ 4,703	$ 4,870
Cash flows from investing activities
Payments for (Proceeds from) Other Investing Activities	17	8	0
Net cash flows used in investing activities	(7,042)	(7,375)	(6,990)
Cash flows from financing activities
Changes in short-term borrowings	(265)	(313)	986
Proceeds from short-term borrowings with maturities greater than 90 days	150	400	1,300
Repayments on short-term borrowings with maturities greater than 90 days	(549)	(150)	(1,500)
Issuance of long-term debt	4,974	5,825	6,309
Retirement of long-term debt	(1,557)	(1,713)	(2,073)
Issuance of common stock	148	140	563
Dividends paid on common stock	(1,524)	(1,433)	(1,334)
Proceeds from employee stock plans	43	41	36
Other financing activities	(109)	(114)	(102)
Net cash flows provided by financing activities	1,311	2,683	1,591
(Decrease) increase in cash, restricted cash, and cash equivalents	(162)	11	(529)
Cash, restricted cash, and cash equivalents at beginning of period	1,101	1,090	1,619
Cash, restricted cash, and cash equivalents at end of period	939	1,101	1,090
Corporate, Non-Segment
Condensed Cash Flow Statements, Captions [Line Items]
Net cash flows provided by operating activities	2,022	1,486	1,690
Cash flows from investing activities
Changes in Exelon/PHI intercompany money pool	8	(43)	35
Notes receivable from affiliates	0	0	274
Investment in affiliates	(1,568)	(1,864)	(4,011)
Payments for (Proceeds from) Other Investing Activities	(2)	(1)	0
Net cash flows used in investing activities	(1,562)	(1,908)	(3,702)
Cash flows from financing activities
Changes in short-term borrowings	(99)	78	448
Proceeds from short-term borrowings with maturities greater than 90 days	150	0	1,150
Repayments on short-term borrowings with maturities greater than 90 days	(150)	0	(1,300)
Issuance of long-term debt	1,700	2,500	3,350
Retirement of long-term debt	(715)	(850)	(1,150)
Issuance of common stock	148	140	563
Dividends paid on common stock	(1,523)	(1,433)	(1,334)
Proceeds from employee stock plans	43	41	36
Other financing activities	(36)	(39)	(35)
Net cash flows provided by financing activities	(482)	437	1,728
(Decrease) increase in cash, restricted cash, and cash equivalents	(22)	15	(284)
Cash, restricted cash, and cash equivalents at beginning of period	26	11	295
Cash, restricted cash, and cash equivalents at end of period	$ 4	$ 26	$ 11

Schedule I - Condensed Financ_4

Schedule I - Condensed Financial Information of Parent (Exelon Corporate) - Condensed Balance Sheet (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Current assets
Cash and cash equivalents	$ 357	$ 445	$ 407	$ 672
Accounts receivable
Other accounts receivable, net	1,016	1,019
Regulatory assets	1,940	2,215
Other	445	370
Total current assets	8,384	8,087
Property, plant and equipment, net	78,182	73,593
Deferred debits and other assets
Regulatory assets	8,710	8,698
Total deferred debits and other assets	21,218	20,176
Total assets	107,784	101,856
Current liabilities
Short-term borrowings	1,859	2,523
Long-term debt due within one year	1,453	1,403
Accrued expenses	1,468	1,375
Regulatory liabilities	411	389
Other	512	519
Total current liabilities	9,611	9,901
Deferred credits and other liabilities
Regulatory liabilities	10,198	9,576
Pension obligations	1,745	1,571
Other	2,282	2,088
Total deferred credits and other liabilities	27,915	26,118
Total liabilities	80,863	76,101
Commitments and contingencies
Shareholders’ equity
Common Stock, No Par Value	$ 0	$ 0
Common stock, shares authorized (in shares)	2,000	2,000
Common stock, shares, outstanding (in shares)	1,005	999
Common stock	$ 21,338	$ 21,114
Treasury Stock, Common, Shares	2	2
Treasury stock, at cost	$ (123)	$ (123)
Retained earnings	6,426	5,490
Accumulated other comprehensive loss, net	(720)	(726)
Total shareholders’ equity	26,921	25,755
Total liabilities and member's equity	107,784	101,856
Related Party
Current liabilities
Accounts payable	5	5
Nonrelated Party
Deferred debits and other assets
Other	1,562	1,365
Current liabilities
Accounts payable	2,994	2,846
Long-term debt	42,947	39,692
Corporate, Non-Segment
Current assets
Cash and cash equivalents	4	26
Accounts receivable
Other accounts receivable, net	288	561
Regulatory assets	186	188
Other	19	17
Total current assets	733	1,031
Property, plant and equipment, net	45	44
Deferred debits and other assets
Regulatory assets	2,851	2,877
Investments in affiliates	40,741	38,545
Deferred income taxes	747	884
Non-pension postretirement benefit asset	186	144
Other	149	107
Total deferred debits and other assets	44,674	42,557
Total assets	45,452	43,632
Current liabilities
Short-term borrowings	927	1,026
Long-term debt due within one year	807	500
Accrued expenses	155	144
Regulatory liabilities	11	10
Pension obligations	40	45
Other	3	49
Total current liabilities	2,445	2,329
Long-term debt	11,334	10,713
Deferred credits and other liabilities
Regulatory liabilities	94	92
Pension obligations	4,346	4,268
Deferred income taxes	50	56
Other	262	419
Total deferred credits and other liabilities	4,752	4,835
Total liabilities	18,531	17,877
Commitments and contingencies
Shareholders’ equity
Common Stock, No Par Value	$ 0	$ 0
Common stock, shares authorized (in shares)	2,000	2,000
Common stock, shares, outstanding (in shares)	1,005	999
Common stock	$ 21,338	$ 21,114
Treasury Stock, Common, Shares	2	2
Treasury stock, at cost	$ (123)	$ (123)
Retained earnings	6,426	5,490
Accumulated other comprehensive loss, net	(720)	(726)
Total shareholders’ equity	26,921	25,755
Total liabilities and member's equity	45,452	43,632
Corporate, Non-Segment | Related Party
Accounts receivable
Other accounts receivable, net	217	225
Accounts receivable from affiliates, current	19	14
Current liabilities
Accounts payable	360	361
Corporate, Non-Segment | Nonrelated Party
Current liabilities
Accounts payable	$ 142	$ 194

Schedule I - Condensed Financ_5

Schedule I - Condensed Financial Information of Parent (Exelon Corporate) - Basis of Presentation - Narrative (Details) - Corporate, Non-Segment	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Exelon significant subsidiaries
Schedule of Equity Method Investments [Line Items]
Percentage ownership of consolidated subsidiaries	100%	100%
Commonwealth Edison Co
Schedule of Equity Method Investments [Line Items]
Percentage ownership of consolidated subsidiaries	99%	99%

Schedule I - Condensed Financ_6

Schedule I - Condensed Financial Information of Parent (Exelon Corporate) - Debt and Credit Agreements - Narrative (Details) - USD ($) $ in Millions		12 Months Ended
	Aug. 29, 2024	Dec. 31, 2024	Mar. 14, 2024	Dec. 31, 2023	Mar. 23, 2017
Revolving Credit Facility
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	$ 900	$ 4,000
Line of credit facility, remaining borrowing capacity		3,951
Debt instrument, basis spread on variable rate	1.275%
Commercial Paper
Line of Credit Facility [Line Items]
Commercial paper		1,359		$ 1,624
Line of credit facility, maximum borrowing capacity		4,000		4,000
Corporate, Non-Segment | Revolving Credit Facility
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	$ 900	900
Line of credit facility, remaining borrowing capacity		$ 471
Debt instrument, basis spread on variable rate	1.275%	1.275%
Credit facility, amount outstanding during period		$ 0
Corporate, Non-Segment | ShortTermDebt03232017
Line of Credit Facility [Line Items]
Short-term loans					$ 500
Corporate, Non-Segment | ShortTermDebt7Amend03142024
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate		1.05%
Short-term loans			$ 150
Corporate, Non-Segment | ShortTermDebt2Amend03142024
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate		1.05%
Short-term loans			$ 350
Corporate, Non-Segment | Commercial Paper
Line of Credit Facility [Line Items]
Commercial paper		$ 426		527
Line of credit facility, maximum borrowing capacity		$ 900		$ 900

Schedule I - Condensed Financ_7

Schedule I - Condensed Financial Information of Parent (Exelon Corporate) - Debt and Credit Agreements - Schedule of Outstanding Long-term Debt (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Long-term debt, gross	$ 44,278	$ 40,889
Unamortized debt discount and premium, net	94	80
Unamortized debt issuance costs	(326)	(296)
Long-term debt (including amounts due within one year)	542	582
Long-term debt, current maturities	(1,453)	(1,403)
Senior unsecured notes
Debt Instrument [Line Items]
Long-term debt, gross	12,280	10,824
Loan agreements
Debt Instrument [Line Items]
Long-term debt, gross	$ 0	$ 500
Minimum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	0.90%
Minimum | Senior unsecured notes
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	2.75%
Long-term debt, maturity date	Jun. 15, 2025
Maximum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.275%
Maximum | Senior unsecured notes
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	7.60%
Maximum | Loan agreements
Debt Instrument [Line Items]
Long-term debt, maturity date		Apr. 08, 2024
Corporate, Non-Segment
Debt Instrument [Line Items]
Long-term debt, gross	$ 12,095	$ 11,139
Unamortized debt discount and premium, net	(24)	(13)
Unamortized debt issuance costs	(71)	(65)
Long-term debt (including amounts due within one year)	141	152
Long-term debt, current maturities	(807)	(500)
Long-term debt	11,334	10,713
Corporate, Non-Segment | Senior unsecured notes
Debt Instrument [Line Items]
Long-term debt, gross	12,095	10,639
Corporate, Non-Segment | Loan agreements
Debt Instrument [Line Items]
Long-term debt, gross	$ 0	$ 500
Debt instrument, basis spread on variable rate	0.85%
Corporate, Non-Segment | Minimum | Senior unsecured notes
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	2.75%
Long-term debt, maturity date	Jun. 15, 2025
Corporate, Non-Segment | Maximum | Senior unsecured notes
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	7.60%
Long-term debt, maturity date	Mar. 15, 2053
Corporate, Non-Segment | Maximum | Loan agreements
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	6.23%
Long-term debt, maturity date		Apr. 08, 2024

Schedule I - Condensed Financ_8

Schedule I - Condensed Financial Information of Parent (Exelon Corporate) - Debt and Credit Agreements - Schedule of Debt Maturities (Details) $ in Millions	Dec. 31, 2024 USD ($)
Debt Instrument [Line Items]
2025	$ 1,453
2026	1,618
2027	1,025
2028	1,992
2029	930
Thereafter	37,650
Total	44,668
Corporate, Non-Segment
Debt Instrument [Line Items]
2025	807
2026	750
2027	650
2028	1,000
2029	650
Thereafter	8,238
Total	$ 12,095

Schedule I - Condensed Financ_9

Schedule I - Condensed Financial Information of Parent (Exelon Corporate) - Related Party Transactions - Summary of Related Party Transactions (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Related Party Transaction [Line Items]
Other accounts receivable, net	$ 1,016	$ 1,019
Related Party
Related Party Transaction [Line Items]
Accounts payable	5	5
Corporate, Non-Segment
Related Party Transaction [Line Items]
Equity in earnings (losses) of investments	2,887	2,728	$ 2,450
Investments in affiliates	40,741	38,545
Corporate, Non-Segment | Exelon Business Services Co Affiliate
Related Party Transaction [Line Items]
Operating and maintenance from affiliates	8	7	4
Interest expense to affiliates, net	11	6	4
Equity in earnings (losses) of investments	0	0	(18)
Receivable from affiliates	2	0
Other accounts receivable, net	154	160
Investments in affiliates	384	384
Accounts payable	0	1
Corporate, Non-Segment | Commonwealth Edison Co
Related Party Transaction [Line Items]
Receivable from affiliates	5	4
Corporate, Non-Segment | PECO Energy Co
Related Party Transaction [Line Items]
Receivable from affiliates	3	2
Corporate, Non-Segment | Baltimore Gas and Electric Company
Related Party Transaction [Line Items]
Receivable from affiliates	2	1
Corporate, Non-Segment | PHI Service Co Affiliate
Related Party Transaction [Line Items]
Receivable from affiliates	7	7
Corporate, Non-Segment | Conectiv
Related Party Transaction [Line Items]
Equity in earnings (losses) of investments	(2)	0	0
Investments in affiliates	14	12
Corporate, Non-Segment | Exelon Enterprise
Related Party Transaction [Line Items]
Equity in earnings (losses) of investments	0	1	0
Investments in affiliates	4	4
Corporate, Non-Segment | Related Party
Related Party Transaction [Line Items]
Operating and maintenance from affiliates	8	7	4
Interest expense to affiliates, net	15	9	5
Contributions from member	2,250	1,978	2,027
Receivable from affiliates	19	14
Other accounts receivable, net	217	225
Accounts payable	360	361
Corporate, Non-Segment | Pepco Holdings LLC Affiliate
Related Party Transaction [Line Items]
Other accounts receivable, net	63	65
Corporate, Non-Segment | Exelon Energy Delivery Company LLC
Related Party Transaction [Line Items]
Interest expense to affiliates, net	4	3	1
Equity in earnings (losses) of investments	2,886	2,727	2,482
Investments in affiliates	39,905	37,705
Corporate, Non-Segment | PCI
Related Party Transaction [Line Items]
Equity in earnings (losses) of investments	3	2	(9)
Investments in affiliates	57	54
Corporate, Non-Segment | UII
Related Party Transaction [Line Items]
Investments in affiliates	365	365
Accounts payable	360	360
Corporate, Non-Segment | Voluntary Employee Beneficiary Association trust
Related Party Transaction [Line Items]
Investments in affiliates	0	9
Corporate, Non-Segment | Exelon InQB8R
Related Party Transaction [Line Items]
Equity in earnings (losses) of investments	0	(2)	(4)
Investments in affiliates	13	13
Corporate, Non-Segment | Other Affiliate
Related Party Transaction [Line Items]
Equity in earnings (losses) of investments	0	0	$ (1)
Investments in affiliates	$ (1)	$ (1)

Schedule II - Valuation and Q_2

Schedule II - Valuation and Qualifying Accounts Schedule (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
SEC Schedule, 12-09, Allowance, Credit Loss
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 399	$ 409	$ 392
Charged to Costs and Expenses	271	171	174
Charged to Other Accounts	22	20	28
Deductions	179	201	185
Balance at End of Period	513	399	409
Deferred Tax Valuation Allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	114	94	37
Charged to Costs and Expenses	0	0	0
Charged to Other Accounts	6	20	57
Deductions	0	0	0
Balance at End of Period	120	114	94
SEC Schedule, 12-09, Allowance, Notes Receivable
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	6	7
Balance at End of Period	13	6	7
Commonwealth Edison Co | SEC Schedule, 12-09, Allowance, Credit Loss
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	86	76	90
Charged to Costs and Expenses	71	45	24
Charged to Other Accounts	28	13	8
Deductions	42	48	46
Balance at End of Period	143	86	76
PECO Energy Co | SEC Schedule, 12-09, Allowance, Credit Loss
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	103	114	112
Charged to Costs and Expenses	88	43	44
Charged to Other Accounts	(1)	9	14
Deductions	39	63	56
Balance at End of Period	151	103	114
PECO Energy Co | Deferred Tax Valuation Allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	7	7	3
Charged to Costs and Expenses	0	0	0
Charged to Other Accounts	(1)	0	4
Deductions	0	0	0
Balance at End of Period	6	7	7
PECO Energy Co | SEC Schedule, 12-09, Allowance, Notes Receivable
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	6	7
Balance at End of Period	13	6	7
Baltimore Gas and Electric Company | SEC Schedule, 12-09, Allowance, Credit Loss
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	53	64	47
Charged to Costs and Expenses	39	26	37
Charged to Other Accounts	4	5	6
Deductions	34	42	26
Balance at End of Period	62	53	64
Baltimore Gas and Electric Company | Deferred Tax Valuation Allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	3	3	0
Charged to Costs and Expenses	0	0	0
Charged to Other Accounts	0	0	3
Deductions	0	0	0
Balance at End of Period	3	3	3
Pepco Holdings LLC | SEC Schedule, 12-09, Allowance, Credit Loss
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	157	155	143
Charged to Costs and Expenses	73	57	69
Charged to Other Accounts	(9)	(7)	0
Deductions	64	48	57
Balance at End of Period	157	157	155
Pepco Holdings LLC | Deferred Tax Valuation Allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	35	35	31
Charged to Costs and Expenses	0	0	0
Charged to Other Accounts	(3)	0	4
Deductions	0	0	0
Balance at End of Period	32	35	35
Potomac Electric Power Company | SEC Schedule, 12-09, Allowance, Credit Loss
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	80	72	53
Charged to Costs and Expenses	48	31	36
Charged to Other Accounts	(10)	(5)	4
Deductions	32	18	21
Balance at End of Period	86	80	72
Delmarva Power & Light Company | SEC Schedule, 12-09, Allowance, Credit Loss
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	27	28	26
Charged to Costs and Expenses	11	10	13
Charged to Other Accounts	0	0	(2)
Deductions	12	11	9
Balance at End of Period	26	27	28
Delmarva Power & Light Company | Deferred Tax Valuation Allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	32	32	31
Charged to Costs and Expenses	0	0	0
Charged to Other Accounts	(3)	0	1
Deductions	0	0	0
Balance at End of Period	29	32	32
Atlantic City Electric Company | SEC Schedule, 12-09, Allowance, Credit Loss
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	50	55	64
Charged to Costs and Expenses	14	16	20
Charged to Other Accounts	1	(2)	(2)
Deductions	20	19	27
Balance at End of Period	$ 45	$ 50	$ 55