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Commitments and Contingencies - Schedule of Commercial Commitments (Details) $ in Millions | Sep. 30, 2024 USD ($)
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Other Commitments [Line Items] |
Other Commitment | $ 653
Other Commitment, to be Paid, Remainder of Fiscal Year | 97
Other Commitment, to be Paid, Year One | 152
Other Commitment, to be Paid, Year Two | 5
Other Commitment, to be Paid, Year Three | 6
Other Commitment, to be Paid, Year Four | 84
Other Commitment, to be Paid, Year Five and Beyond | 309
Guarantor Obligations, Maximum Exposure, Undiscounted | 60
Letters of Credit |
Other Commitments [Line Items] |
Other Commitment | 54
Other Commitment, to be Paid, Remainder of Fiscal Year | 11
Other Commitment, to be Paid, Year One | 43
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 and Beyond | 0
Surety Bonds |
Other Commitments [Line Items] |
Other Commitment | 195
Other Commitment, to be Paid, Remainder of Fiscal Year | 86
Other Commitment, to be Paid, Year One | 107
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 and Beyond | 0
Financing trust guarantees |
Other Commitments [Line Items] |
Other Commitment | 378
Other Commitment, to be Paid, Remainder of Fiscal Year | 0
Other Commitment, to be Paid, Year One | 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 and Beyond | 300
Guaranteed lease residual values |
Other Commitments [Line Items] |
Other Commitment | 26
Other Commitment, to be Paid, Remainder of Fiscal Year | 0
Other Commitment, to be Paid, Year One | 2
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 and Beyond | 9
Commonwealth Edison Co |
Other Commitments [Line Items] |
Other Commitment | 253
Other Commitment, to be Paid, Remainder of Fiscal Year | 9
Other Commitment, to be Paid, Year One | 42
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 and Beyond | 200
Commonwealth Edison Co | Letters of Credit |
Other Commitments [Line Items] |
Other Commitment | 17
Other Commitment, to be Paid, Remainder of Fiscal Year | 4
Other Commitment, to be Paid, Year One | 13
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 and Beyond | 0
Commonwealth Edison Co | Surety Bonds |
Other Commitments [Line Items] |
Other Commitment | 36
Other Commitment, to be Paid, Remainder of Fiscal Year | 5
Other Commitment, to be Paid, Year One | 29
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 and Beyond | 0
Commonwealth Edison Co | Financing trust guarantees |
Other Commitments [Line Items] |
Other Commitment | 200
Other Commitment, to be Paid, Remainder of Fiscal Year | 0
Other Commitment, to be Paid, Year One | 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 and Beyond | 200
PECO Energy Co |
Other Commitments [Line Items] |
Other Commitment | 184
Other Commitment, to be Paid, Remainder of Fiscal Year | 0
Other Commitment, to be Paid, Year One | 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 and Beyond | 100
PECO Energy Co | Letters of Credit |
Other Commitments [Line Items] |
Other Commitment | 4
Other Commitment, to be Paid, Remainder of Fiscal Year | 0
Other Commitment, to be Paid, Year One | 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 and Beyond | 0
PECO Energy Co | Surety Bonds |
Other Commitments [Line Items] |
Other Commitment | 2
Other Commitment, to be Paid, Remainder of Fiscal Year | 0
Other Commitment, to be Paid, Year One | 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 and Beyond | 0
PECO Energy Co | Financing trust guarantees |
Other Commitments [Line Items] |
Other Commitment | 178
Other Commitment, to be Paid, Remainder of Fiscal Year | 0
Other Commitment, to be Paid, Year One | 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 and Beyond | 100
Baltimore Gas and Electric Company |
Other Commitments [Line Items] |
Other Commitment | 30
Other Commitment, to be Paid, Remainder of Fiscal Year | 7
Other Commitment, to be Paid, Year One | 23
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 and Beyond | 0
Baltimore Gas and Electric Company | Letters of Credit |
Other Commitments [Line Items] |
Other Commitment | 27
Other Commitment, to be Paid, Remainder of Fiscal Year | 6
Other Commitment, to be Paid, Year One | 21
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 and Beyond | 0
Baltimore Gas and Electric Company | Surety Bonds |
Other Commitments [Line Items] |
Other Commitment | 3
Other Commitment, to be Paid, Remainder of Fiscal Year | 1
Other Commitment, to be Paid, Year One | 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 and Beyond | 0
Pepco Holdings LLC |
Other Commitments [Line Items] |
Other Commitment | 126
Other Commitment, to be Paid, Remainder of Fiscal Year | 76
Other Commitment, to be Paid, Year One | 26
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 and Beyond | 9
Guarantor Obligations, Maximum Exposure, Undiscounted | 60
Pepco Holdings LLC | Letters of Credit |
Other Commitments [Line Items] |
Other Commitment | 3
Other Commitment, to be Paid, Remainder of Fiscal Year | 0
Other Commitment, to be Paid, Year One | 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 and Beyond | 0
Pepco Holdings LLC | Surety Bonds |
Other Commitments [Line Items] |
Other Commitment | 97
Other Commitment, to be Paid, Remainder of Fiscal Year | 76
Other Commitment, to be Paid, Year One | 21
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 and Beyond | 0
Pepco Holdings LLC | Guaranteed lease residual values |
Other Commitments [Line Items] |
Other Commitment | 26
Other Commitment, to be Paid, Remainder of Fiscal Year | 0
Other Commitment, to be Paid, Year One | 2
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 and Beyond | 9
Potomac Electric Power Company |
Other Commitments [Line Items] |
Other Commitment | 96
Other Commitment, to be Paid, Remainder of Fiscal Year | 71
Other Commitment, to be Paid, Year One | 17
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 and Beyond | 3
Guarantor Obligations, Maximum Exposure, Undiscounted | 21
Potomac Electric Power Company | Letters of Credit |
Other Commitments [Line Items] |
Other Commitment | 2
Other Commitment, to be Paid, Remainder of Fiscal Year | 0
Other Commitment, to be Paid, Year One | 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 and Beyond | 0
Potomac Electric Power Company | Surety Bonds |
Other Commitments [Line Items] |
Other Commitment | 85
Other Commitment, to be Paid, Remainder of Fiscal Year | 71
Other Commitment, to be Paid, Year One | 14
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 and Beyond | 0
Potomac Electric Power Company | Guaranteed lease residual values |
Other Commitments [Line Items] |
Other Commitment | 9
Other Commitment, to be Paid, Remainder of Fiscal Year | 0
Other Commitment, to be Paid, Year One | 1
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 and Beyond | 3
Delmarva Power and Light Company |
Other Commitments [Line Items] |
Other Commitment | 18
Other Commitment, to be Paid, Remainder of Fiscal Year | 3
Other Commitment, to be Paid, Year One | 6
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 and Beyond | 3
Guarantor Obligations, Maximum Exposure, Undiscounted | 22
Delmarva Power and Light Company | Letters of Credit |
Other Commitments [Line Items] |
Other Commitment | 1
Other Commitment, to be Paid, Remainder of Fiscal Year | 0
Other Commitment, to be Paid, Year One | 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 and Beyond | 0
Delmarva Power and Light Company | Surety Bonds |
Other Commitments [Line Items] |
Other Commitment | 7
Other Commitment, to be Paid, Remainder of Fiscal Year | 3
Other Commitment, to be Paid, Year One | 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 and Beyond | 0
Delmarva Power and Light Company | Guaranteed lease residual values |
Other Commitments [Line Items] |
Other Commitment | 10
Other Commitment, to be Paid, Remainder of Fiscal Year | 0
Other Commitment, to be Paid, Year One | 1
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 and Beyond | 3
Atlantic City Electric Company |
Other Commitments [Line Items] |
Other Commitment | 12
Other Commitment, to be Paid, Remainder of Fiscal Year | 2
Other Commitment, to be Paid, Year One | 3
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 and Beyond | 3
Guarantor Obligations, Maximum Exposure, Undiscounted | 17
Atlantic City Electric Company | Surety Bonds |
Other Commitments [Line Items] |
Other Commitment | 5
Other Commitment, to be Paid, Remainder of Fiscal Year | 2
Other Commitment, to be Paid, Year One | 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 and Beyond | 0
Atlantic City Electric Company | Guaranteed lease residual values |
Other Commitments [Line Items] |
Other Commitment | 7
Other Commitment, to be Paid, Remainder of Fiscal Year | 0
Other Commitment, to be Paid, Year One | 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 and Beyond | $ 3
Minimum [Member] | Guaranteed lease residual values |
Other Commitments [Line Items] |
Lessor, Operating Lease, Term of Contract | 1 year
Maximum [Member] | Guaranteed lease residual values |
Other Commitments [Line Items] |
Lessor, Operating Lease, Term of Contract | 9 years

X
- Definition Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482425/460-10-50-4 + Details
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