Derivative Financial Instruments - Schedule of Derivative Instruments (Details) - MWh MWh in Millions	1 Months Ended	3 Months Ended
	Jun. 30, 2012	Jun. 30, 2025
Commonwealth Edison Co
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Long-term Purchase Commitment, Minimum Energy Volume Required	1.3
PECO Energy Co
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Estimated Percent of Gas Purchases Being Hedged		10.00%
Delmarva Power and Light Company
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Estimated Percent of Gas Purchases Being Hedged		50.00%

- 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.

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