No definition available.

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- Definition

Maximum increase of revenue requirement

+ References

No definition available.

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- Definition

Regulatory Matters Additional Narrative Information [Line Items]

+ References

No definition available.

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- Definition

Residential Customer Bill Credit

+ References

No definition available.

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- Definition

The increase (decrease) during the reporting period in the value of other assets that are created when regulatory agencies permits public utilities to defer costs to the balance sheet.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (a)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

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- Definition

The increase (decrease) during the reporting period in regulated liabilities. Regulated liabilities are created when regulatory agency permits an entity to defer revenues to the balance sheet.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Definition

Amount of loss contingency liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-1

Reference 2: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-10

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- Definition

Percentage of public utility's approved debt to capital, including debt and equity.

+ References

No definition available.

+ Details

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Data Type:	dtr-types:percentItemType
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- Definition

Amount of public utility's approved rate increase (decrease) by regulatory agency.

+ References

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

The amount for the individual regulatory asset as itemized in a table of regulatory assets as of the end of the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 980
-SubTopic 340
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478742/980-340-50-1

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Balance Type:	debit
Period Type:	instant

- Definition

The amount for the individual regulatory liability as itemized in a table of regulatory liabilities as of the end of the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 980
-SubTopic 405
-Name Accounting Standards Codification
-Section 25
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477571/980-405-25-1

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Regulatory Matters - Narrative (Details) $ in Millions				2 Months Ended	6 Months Ended		48 Months Ended
Regulatory Matters - Narrative (Details) $ in Millions	Dec. 19, 2024 USD ($)	Dec. 14, 2023 USD ($)	Sep. 27, 2022 basisPoint	Aug. 31, 2025 dollarsPerResidentialCustomer	Feb. 28, 2026 dollarsPerResidentialCustomer	Jun. 30, 2025 USD ($)	Dec. 31, 2027 USD ($)	Dec. 31, 2024 USD ($)
Commonwealth Edison Co
Regulatory Matters Additional Narrative Information [Line Items]
Maximum increase of revenue requirement						105.00%
Basis Points - ComEd Symmetrical Performance Adjustments \| basisPoint			0.0032
Increase (Decrease) in Regulatory Assets						$ (140.0)
Commonwealth Edison Co \| Illinois 2023 Electric Distribution Base Rate Case
Regulatory Matters Additional Narrative Information [Line Items]
Approved Revenue Requirement Increase (Decrease)	$ 1,045.0	$ 501.0
Commonwealth Edison Co \| Forecast [Member] \| Illinois 2023 Electric Distribution Base Rate Case
Regulatory Matters Additional Narrative Information [Line Items]
Public Utilities, Approved Debt Capital Structure, Percentage							50.00%
Commonwealth Edison Co \| Forecast [Member] \| 2023 \| Illinois 2023 Electric Distribution Base Rate Case
Regulatory Matters Additional Narrative Information [Line Items]
Approved Revenue Requirement Increase (Decrease)							$ (986.0)
Commonwealth Edison Co \| ComEd FERC Audit Settlement Regulatory Liability
Regulatory Matters Additional Narrative Information [Line Items]
Loss Contingency Accrual								$ 70.0
Commonwealth Edison Co \| Carbon Mitigation Credit rider
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						159.0
Commonwealth Edison Co \| Electric Distribution Formula Rate Asset
Regulatory Matters Additional Narrative Information [Line Items]
Increase (Decrease) in Regulatory Assets						(295.0)
Commonwealth Edison Co \| Zero Emission Credit
Regulatory Matters Additional Narrative Information [Line Items]
Increase (Decrease) in Regulatory Assets						118.0
PECO Energy Co
Regulatory Matters Additional Narrative Information [Line Items]
Increase (Decrease) in Regulatory Assets						102.0
Increase (Decrease) in Regulatory Liabilities						156.0
PECO Energy Co \| Nuclear Decommissioning [Member]
Regulatory Matters Additional Narrative Information [Line Items]
Increase (Decrease) in Regulatory Liabilities						132.0
PECO Energy Co \| Over Recovered Energy and Natural Gas Costs
Regulatory Matters Additional Narrative Information [Line Items]
Increase (Decrease) in Regulatory Liabilities						26.0
PECO Energy Co \| Deferred Income Tax Charge [Member]
Regulatory Matters Additional Narrative Information [Line Items]
Increase (Decrease) in Regulatory Assets						111.0
Baltimore Gas and Electric Company \| Next Generation Energy Act
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						10.0
Regulatory Liabilities						3.0
Potomac Electric Power Company
Regulatory Matters Additional Narrative Information [Line Items]
Increase (Decrease) in Regulatory Liabilities						(26.0)
Potomac Electric Power Company \| Deferred Income Tax Charge [Member]
Regulatory Matters Additional Narrative Information [Line Items]
Increase (Decrease) in Regulatory Liabilities						(20.0)
Atlantic City Electric Company
Regulatory Matters Additional Narrative Information [Line Items]
Increase (Decrease) in Regulatory Liabilities						16.0
Atlantic City Electric Company \| Forecast [Member] \| NJ Summer Rate Mitigation Bill Credit
Regulatory Matters Additional Narrative Information [Line Items]
Residential Customer Bill Credit \| dollarsPerResidentialCustomer				30	10
Atlantic City Electric Company \| Under/Over Recovered Transmission Costs
Regulatory Matters Additional Narrative Information [Line Items]
Increase (Decrease) in Regulatory Liabilities						13.0
Delmarva Power and Light Company \| Next Generation Energy Act
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Liabilities						$ 0.4