- 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.

+ References

No definition available.

+ Details

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- Definition

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

+ References

No definition available.

+ Details

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- Definition

Amount of public utility's requested rate increase (decrease) with regulatory agency, prior year annual reconciliation.

+ References

No definition available.

+ Details

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- Definition

Line Items for Regulatory Matters Pending Rate Cases [Table]

+ References

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+ Details

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- Definition

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

+ 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.

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- Definition

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

+ References

No definition available.

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- Definition

Percentage of public utility's requested return on equity.

+ References

No definition available.

+ Details

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Regulatory Matters - Schedule of Pending Rate Cases (Details) (Details) - USD ($) $ in Millions					12 Months Ended
	Apr. 23, 2020	Apr. 16, 2020	Apr. 08, 2020	Mar. 17, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Illinois 2020 Electric Distribution Base Rate Case [Member] \| Commonwealth Edison Co [Member] \| Subsequent Event [Member]
Regulatory Matters Pending Rate Cases [Line Items]
Requested Revenue Requirement Increase (Decrease)		$ (11)
Public Utilities, Requested Rate Increase (Decrease), Initial Revenue Requirement, Amount		51
Public Utilities Requested Rate Increase (Decrease), Prior Year Annual Reconciliation		$ (62)
Requested Return on Equity, Percentage		8.38%
Requested Return on Distribution Rate Base, Percentage		6.28%
Basis points for ComEd's Revenue Requirement		580
District of Columbia 2019 Electric Distribution Base Rate Case [Member] \| Potomac Electric Power Company [Member] \| Subsequent Event [Member]
Regulatory Matters Pending Rate Cases [Line Items]
Requested Revenue Requirement Increase (Decrease), Amended			$ 147
Requested Return on Equity, Percentage			10.30%
District of Columbia 2019 Electric Distribution Base Rate Case [Member] \| Forecast [Member] \| Potomac Electric Power Company [Member] \| Subsequent Event [Member]
Regulatory Matters Pending Rate Cases [Line Items]
Requested Revenue Requirement Increase (Decrease), Amended					$ 33	$ 37	$ 77
Maryland 2019 Electric Distribution Base Rate Case [Member] \| Delmarva Power and Light Company [Member] \| Subsequent Event [Member]
Regulatory Matters Pending Rate Cases [Line Items]
Requested Revenue Requirement Increase (Decrease), Amended	$ 17
Requested Return on Equity, Percentage	10.30%
Delaware 2020 Gas Distribution Base Rate Case [Member] \| Delmarva Power and Light Company [Member]
Regulatory Matters Pending Rate Cases [Line Items]
Requested Revenue Requirement Increase (Decrease), Amended				$ 9
Requested Return on Equity, Percentage				10.30%
Delaware 2020 Electric Distribution Base Rate Case [Member] \| Delmarva Power and Light Company [Member] \| Subsequent Event [Member]
Regulatory Matters Pending Rate Cases [Line Items]
Requested Revenue Requirement Increase (Decrease), Amended		$ 24
Requested Return on Equity, Percentage		10.30%