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- Definition

Maximum basis points that can be added to the average rate on 30-year treasury notes, to determine the allowed ROE for ComEd's revenue requirement.

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No definition available.

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- Definition

Beneficial electrification approved annual spending

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- Definition

Contract Termination Liability

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No definition available.

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- Definition

Current requested revenue increase 2024-2027

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Initial requested revenue increase 2024-2027

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- Definition

Maximum increase of revenue requirement

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Regulatory Matters Additional Narrative Information [Line Items]

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- Definition

Gain (loss) related to the termination of a contract between the parties. The termination may be due to many causes including early termination of a lease by a lessee, a breach of contract by one party, or a failure to perform.

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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.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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.

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

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Amount of public utility's requested rate increase (decrease) with regulatory agency.

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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.

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Regulatory Matters - Narrative (Details)						3 Months Ended		36 Months Ended	48 Months Ended
Regulatory Matters - Narrative (Details)	Dec. 14, 2023 USD ($)	Sep. 27, 2023 USD ($)	Jan. 17, 2023 USD ($)	Sep. 27, 2022	Feb. 03, 2022	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2025 USD ($)	Dec. 31, 2027 USD ($)	Mar. 31, 2022 USD ($)
Commonwealth Edison Co
Regulatory Matters Additional Narrative Information [Line Items]
Basis points for ComEd's Revenue Requirement					580
Maximum increase of revenue requirement						105.00%
Basis Points - ComEd Symmetrical Performance Adjustments				32
Increase (Decrease) in Regulatory Assets						$ (286,000,000)
Commonwealth Edison Co \| Illinois 2023 Electric Distribution Base Rate Case
Regulatory Matters Additional Narrative Information [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount		$ 1,487,000,000	$ 1,487,000,000
Approved Revenue Requirement Increase (Decrease)	$ 501,000,000
Commonwealth Edison Co \| Forecast [Member]
Regulatory Matters Additional Narrative Information [Line Items]
Initial requested revenue increase 2024-2027									$ 1,472,000,000
Current requested revenue increase 2024-2027									1,545,000,000
Beneficial electrification approved annual spending								$ 77,000,000
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)									$ 986,000,000
Commonwealth Edison Co \| Carbon Mitigation Credit rider
Regulatory Matters Additional Narrative Information [Line Items]
Regulatory Assets						405,000,000
Increase (Decrease) in Regulatory Assets						(268,000,000)
PECO Energy Co
Regulatory Matters Additional Narrative Information [Line Items]
Increase (Decrease) in Regulatory Liabilities						(17,000,000)
PECO Energy Co \| Nuclear Decommissioning [Member]
Regulatory Matters Additional Narrative Information [Line Items]
Increase (Decrease) in Regulatory Liabilities						(26,000,000)
Baltimore Gas and Electric Company
Regulatory Matters Additional Narrative Information [Line Items]
Increase (Decrease) in Regulatory Liabilities						75,000,000
Baltimore Gas and Electric Company \| Deferred Income Tax Charge [Member]
Regulatory Matters Additional Narrative Information [Line Items]
Increase (Decrease) in Regulatory Liabilities						75,000,000
Atlantic City Electric Company
Regulatory Matters Additional Narrative Information [Line Items]
Contract Termination Liability						31,000,000				$ 203,000,000
Gain (Loss) on Contract Termination						18,000,000	$ 19,000,000
Increase (Decrease) in Regulatory Assets						34,000,000
Atlantic City Electric Company \| Under-recovered revenue decoupling
Regulatory Matters Additional Narrative Information [Line Items]
Increase (Decrease) in Regulatory Assets						13,000,000
Atlantic City Electric Company \| Storm Costs
Regulatory Matters Additional Narrative Information [Line Items]
Increase (Decrease) in Regulatory Assets						8,000,000
Atlantic City Electric Company \| Energy Efficiency and Demand Response Programs
Regulatory Matters Additional Narrative Information [Line Items]
Increase (Decrease) in Regulatory Assets						$ 8,000,000