Basis points for Transmission Formula Rate

No definition available.

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- Definition

The maximum percentage allowed for the equity component of the rate of return on common equity in the Federal Energy Regulatory Committee Complaint.

+ References

No definition available.

+ Details

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- Definition

Exepected adjustment to revenue to be recorded in the prior year.

+ References

No definition available.

+ Details

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- Definition

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

+ References

No definition available.

+ Details

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- Definition

Percentage of public utility's approved return on equity.

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

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

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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- Details

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Regulatory Matters - Annual Electric Transmission Fillings (Details) - USD ($) $ in Millions	May 27, 2022	May 13, 2022	Apr. 29, 2022	Apr. 27, 2022
Commonwealth Edison Co [Member] \| 2022 Transmission Formula Rate Annual Update [Domain]
Public Utilities, General Disclosures [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount			$ 24
Annual Reconciliation Increase			(24)
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount			$ 0
Public Utilities, Approved Equity Capital Structure, Percentage			8.11%
Public Utilities, Approved Return on Equity, Percentage			11.50%
Cap on Equity Component of Rate of Return on Common Equity in Federal Energy Regulatory Committee Complaint			55.00%
Basis points for Transmission Formula Rate			50
PECO Energy Co [Member] \| 2022 Transmission Formula Rate Annual Update [Domain]
Public Utilities, General Disclosures [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount	$ 23
Annual Reconciliation Increase	16
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount	$ 39
Public Utilities, Approved Equity Capital Structure, Percentage	7.30%
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 [Member] \| 2022 Transmission Formula Rate Annual Update [Domain]
Public Utilities, General Disclosures [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount				$ 25
Annual Reconciliation Increase				(4)
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount				$ 16
Public Utilities, Approved Equity Capital Structure, Percentage				7.30%
Public Utilities, Approved Return on Equity, Percentage				10.50%
Baltimore Gas and Electric Company [Member] \| 2022 Transmission Formula Rate Revenue Reduction
Public Utilities, General Disclosures [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount				$ 5
Potomac Electric Power Company [Member] \| 2022 Transmission Formula Rate Annual Update [Domain]
Public Utilities, General Disclosures [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount		$ 16
Annual Reconciliation Increase		15
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount		$ 31
Public Utilities, Approved Equity Capital Structure, Percentage		7.60%
Public Utilities, Approved Return on Equity, Percentage		10.50%
Delmarva Power and Light Company [Member] \| 2022 Transmission Formula Rate Annual Update [Domain]
Public Utilities, General Disclosures [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount		$ 9
Annual Reconciliation Increase		2
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount		$ 11
Public Utilities, Approved Equity Capital Structure, Percentage		7.09%
Public Utilities, Approved Return on Equity, Percentage		10.50%
Atlantic City Electric Company [Member] \| 2022 Transmission Formula Rate Annual Update [Domain]
Public Utilities, General Disclosures [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount		$ 21
Annual Reconciliation Increase		13
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount		$ 34
Public Utilities, Approved Equity Capital Structure, Percentage		7.18%
Public Utilities, Approved Return on Equity, Percentage		10.50%