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Debt and Credit Agreements (Tables)
 12 Months Ended
Dec. 31, 2022
Short-term and Long-term Debt [Line Items]  
Schedule of Commercial Paper Borrowings
The following table reflects the Registrants' commercial paper programs supported by the revolving credit agreements and bilateral credit agreements as of December 31, 2022 and 2021:
Credit Facility Size
as of December 31,		Outstanding Commercial
Paper as of December 31,		Average Interest Rate on
Commercial Paper Borrowings
as of December 31,
Commercial Paper Issuer
2022(a)
2021(a)
2022202120222021
Exelon(b)
$4,000 $3,700 $1,938 $599 4.77 %0.35 %
ComEd1,000 1,000 427 — 4.71 %— %
PECO600 600 239 — 4.71 %— %
BGE600 600 409 130 4.81 %0.37 %
PHI(c)
900 900 414 469 4.78 %0.35 %
Pepco300 
(d)
300 299 175 4.79 %0.33 %
DPL300 
(d)
300 115 149 4.76 %0.36 %
ACE300 
(d)
300 — 145 — %0.35 %
__________
(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 and $600 million as of December 31, 2022 and December 31, 2021, respectively. Exelon Corporate had $449 million in outstanding commercial paper as of December 31, 2022 and no outstanding commercial paper as of December 31, 2021.
(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. As of December 23, 2022, this ability was utilized to increase Pepco's program size to $400 million. As a result, the program sizes for DPL and ACE were decreased to $250 million each, which prevents the aggregate amount of outstanding short-term debt from potentially exceeding the $900 million limit.
Schedule of Aggregate Bank Commitments, Credit Facility Borrowings, and Available Capacity
As of December 31, 2022, the Registrants had the following aggregate bank commitments, credit facility borrowings, and available capacity under their respective credit facilities:
Available Capacity as of December 31, 2022
Borrower(a)
Facility Type
Aggregate Bank
Commitment(b)
Facility DrawsOutstanding
Letters of Credit		Actual
To Support
Additional
Commercial
Paper(c)
Exelon(c)
Syndicated Revolver$4,000 $— $8 $3,992 $2,054 
ComEdSyndicated Revolver1,000 — 5 995 568 
PECOSyndicated Revolver600 — — 600 361 
BGESyndicated Revolver600 — — 600 191 
PHI(d)
Syndicated Revolver900 — — 900 486 
PepcoSyndicated Revolver300 — — 300 1 
DPLSyndicated Revolver300 — — 300 185 
ACESyndicated Revolver300 — — 300 300 
__________
(a)On February 1, 2022, Exelon Corporate and the Utility Registrants' respective syndicated revolving credit facilities were replaced with a new 5-year revolving credit facility.
(b)Excludes credit facility agreements arranged at minority and community banks. See below for additional information.
(c)Includes $900 million aggregate bank commitment related to Exelon Corporate. Exelon Corporate had $3 million outstanding letters of credit as of December 31, 2022. Exelon Corporate had $448 million in available capacity to support additional commercial paper as of December 31, 2022.
(d)Represents the consolidated amounts of Pepco, DPL, and ACE.
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 are presented in the following table:
Exelon(a)
ComEdPECOBGEPepcoDPLACE
Prime based borrowings 0 - 27.5— — — 7.5 — 7.5 
SOFR-based borrowings90.0 - 127.5100.0 90.0 90.0 107.5 100.0 107.5 
__________
(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 as of December 31, 2022 and 2021:
Exelon
Maturity
Date		December 31,
Rates20222021
Long-term debt
First mortgage bonds(a)(b)
1.05 %-7.90 %2023 - 2052$22,651 $20,751 
Senior unsecured notes2.75 %-7.60 %2025 - 20528,324 6,324 
Unsecured notes2.25 %-6.35 %2023 - 20524,250 4,000 
Notes payable and other1.64 %-7.49 %2025 - 205386 86 
Junior subordinated notes3.50 %2022— 1,150 
Long-term software licensing agreement2.30 %-3.95 %2024 - 202525 9 
Unsecured tax-exempt bonds4.00 %-4.05 %202433 143 
Medium-terms notes (unsecured)7.72 %202710 10 
Loan agreement2.00 %5.15 %2023 - 20241,400 50 
Total long-term debt36,779 32,523 
Unamortized debt discount and premium, net(74)(70)
Unamortized debt issuance costs (257)(220)
Fair value adjustment626 669 
Long-term debt due within one year(c)
(1,802)(2,153)
Long-term debt$35,272 $30,749 
Long-term debt to financing trusts(d)
Subordinated debentures to ComEd Financing III6.35 %2033$206 $206 
Subordinated debentures to PECO Trust III7.38 %-9.50 %202881 81 
Subordinated debentures to PECO Trust IV5.75 %2033103 103 
Total long-term debt to financing trusts$390 $390 
__________
(a)Substantially all of ComEd’s assets other than expressly excepted 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)On January 3, 2023, ComEd entered into a purchase agreement of First Mortgage Bonds of $400 million and $575 million at 4.90% and 5.30% due on February 1, 2033 and February 1, 2053, respectively. The closing date of the issuance occurred on January 10, 2023.
(c)In connection with the separation, Exelon Corporate entered into three 18-month term loan agreements. On January 21, 2022, two of the loan agreements were issued for $300 million each with an expiration date of July 21, 2023. On January 24, 2022, the third loan agreement was issued for $250 million with an expiration date of July 24, 2023. Pursuant to the loan agreement, loans made thereunder bear interest at a variable rate equal to SOFR plus 0.65%.
(d)Amounts owed to these financing trusts are recorded as Long-term debt to financing trusts within Exelon’s Consolidated Balance Sheets.
ComEd
Maturity
Date		December 31,
Rates20222021
Long-term debt
First mortgage bonds(a)(b)
2.20 %-6.45 %2024 - 2052$10,629 $9,879 
Other7.49 %20538 8 
Total long-term debt10,637 9,887 
Unamortized debt discount and premium, net(27)(27)
Unamortized debt issuance costs(92)(87)
Long-term debt$10,518 $9,773 
Long-term debt to financing trust(c)
Subordinated debentures to ComEd Financing III6.35 %2033$206 $206 
Total long-term debt to financing trusts206 206 
Unamortized debt issuance costs (1)(1)
Long-term debt to financing trusts $205 $205 
__________
(a)Substantially all of ComEd’s assets, other than expressly excepted property, are subject to the lien of its mortgage indenture.
(b)On January 3, 2023, ComEd entered into a purchase agreement of First Mortgage Bonds of $400 million and $575 million at 4.90% and 5.30% due on February 1, 2033 and February 1, 2053, respectively. The closing date of the issuance occurred on January 10, 2023.
(c)Amount owed to this financing trust is recorded as Long-term debt to financing trust within ComEd’s Consolidated Balance Sheets.
PECO
Maturity
Date		December 31,
Rates20222021
Long-term debt
First mortgage bonds(a)
2.80 %-5.95 %2025 - 2052$4,625 $4,200 
Loan agreement2.00 %202350 50 
Total long-term debt4,675 4,250 
Unamortized debt discount and premium, net(24)(20)
Unamortized debt issuance costs(39)(33)
Long-term debt due within one year(50)(350)
Long-term debt$4,562 $3,847 
Long-term debt to financing trusts(b)
Subordinated debentures to PECO Trust III7.38 %-9.50 %2028$81 $81 
Subordinated debentures to PECO Trust IV5.75 %2033103 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
Date		December 31,
Rates20222021
Long-term debt
Unsecured notes2.25 %-6.35 %2023 - 2052$4,250 $4,000 
Total long-term debt4,250 4,000 
Unamortized debt discount and premium, net(13)(12)
Unamortized debt issuance costs(30)(27)
Long-term debt due within one year(300)(250)
Long-term debt$3,907 $3,711 
PHI
Maturity
Date		December 31,
Rates20222021
Long-term debt
First mortgage bonds(a)
1.05 %-7.90 %2023 - 2052$7,397 $6,672 
Senior unsecured notes
7.45 %2032185 185 
Unsecured tax-exempt bonds4.00 %-4.05 %202433 143 
Medium-terms notes (unsecured)7.72 %202710 10 
Finance leases5.59 %2025 - 203076 74 
Other(b)
7.28 %-7.49 %2022— — 
Total long-term debt7,701 7,084 
Unamortized debt discount and premium, net4 4 
Unamortized debt issuance costs(47)(36)
Fair value adjustment462 495 
Long-term debt due within one year(591)(399)
Long-term debt$7,529 $7,148 
_________
(a)Substantially all of Pepco's, DPL's, and ACE's assets are subject to the liens of their respective mortgage indentures.
(b)The amount in the Other category was zero and less than $1 million as of December 31, 2022 and December 31, 2021, respectively.
Pepco
Maturity
Date		December 31,
Rates20222021
Long-term debt
First mortgage bonds(a)
2.32 %-7.90 %2024 - 2052$3,775 $3,350 
Unsecured tax-exempt bonds1.70 %2022— 110 
Finance leases5.59 %2025 - 202925 26 
Other(b)
7.28 %-7.49 %2022— — 
Total long-term debt3,800 3,486 
Unamortized debt discount and premium, net2 2 
Unamortized debt issuance costs(51)(43)
Long-term debt due within one year(4)(313)
Long-term debt$3,747 $3,132 
________
(a)Substantially all of Pepco's assets are subject to the lien of its mortgage indenture.
(b)The amount in the Other category was zero and less than $1 million as of December 31, 2022 and December 31, 2021, respectively.
DPL
Maturity
Date		December 31,
Rates20222021
Long-term debt
First mortgage bonds(a)
1.05 %-4.27 %2023 - 2052$1,874 $1,749 
Unsecured tax-exempt bonds4.00 %-4.05 %202433 33 
Medium-terms notes (unsecured)
7.72 %202710 10 
Finance leases5.39 %2025 - 203032 29 
Total long-term debt1,949 1,821 
Unamortized debt discount and premium, net(b)
— — 
Unamortized debt issuance costs(11)(11)
Long-term debt due within one year(584)(83)
Long-term debt$1,354 $1,727 
__________
(a)Substantially all of DPL's assets are subject to the lien of its mortgage indenture.
(b)The amount in the Unamortized debt discount and premium, net category was less than $1 million as of December 31, 2022 and 2021.
ACE
Maturity
Date		December 31,
Rates20222021
Long-term debt
First mortgage bonds(a)
2.25 %-5.80 %2024 - 2052$1,748 $1,573 
Finance leases5.59 %2025 - 203019 19 
Total long-term debt1,767 1,592 
Unamortized debt discount and premium, net(1)(1)
Unamortized debt issuance costs(9)(9)
Long-term debt due within one year(3)(3)
Long-term debt$1,754 $1,579 
__________
(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 2023 through 2027 and thereafter are as follows:
YearExelon ComEdPECOBGEPHIPepcoDPLACE
2023$1,802 $— $50 $300  $591 $4 $584 $3 
20241,317 250 — —  564 405 6 153 
20251,414 — 350 —  242 5 84 153 
20261,613 500 — 350  13 4 6 3 
20271,021 350 — —  21 3 15 3 
Thereafter30,002 
(a)
9,743 
(b)
4,459 
(c)
3,600 6,270 3,379 1,254 1,452 
Total$37,169 $10,843 $4,859 $4,250 $7,701 $3,800 $1,949 $1,767 
__________
(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.
Community and Minority Facilities [Member]  
Short-term and Long-term Debt [Line Items]  
Schedule of Aggregate Bank Commitments, Credit Facility Borrowings, and Available Capacity
The following table reflects the Registrants' credit facility agreements arranged at minority and community banks as of December 31, 2022 and 2021. These are excluded from the Maximum Program Size and Aggregate Bank Commitment amounts within the two tables above and the facilities are solely used to issue letters of credit.
Aggregate Bank CommitmentsOutstanding Letters of Credit
Borrower
2022(a)
202120222021
Exelon(b)
$140 $98 $10 $8 
ComEd40 33 7 5 
PECO40 33 1 1 
BGE15 8 2 2 
PHI(c)
45 24 — — 
Pepco15 8 — — 
DPL 15 8 — — 
ACE15 8 — — 
__________
(a)These facilities were entered into on October 7, 2022 and expire on October 6, 2023.
(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 Facility [Member]  
Short-term and Long-term Debt [Line Items]  
Schedule of Aggregate Bank Commitments, Credit Facility Borrowings, and Available Capacity
Revolving Credit Agreements
On February 1, 2022, Exelon Corporate and the Utility Registrants each entered into a new 5-year revolving credit facility that replaced its existing syndicated revolving credit facility. The following table reflects the credit agreements:
BorrowerAggregate Bank CommitmentInterest Rate
Exelon Corporate$900 SOFR plus 1.275 %
ComEd1,000 SOFR plus 1.000 %
PECO600 SOFR plus 0.900 %
BGE600 SOFR plus 0.900 %
Pepco300 SOFR plus 1.075 %
DPL 300 SOFR plus 1.000 %
ACE300 SOFR plus 1.075 %