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Accounts Receivable - Unbilled Customer Revenue (Details) - USD ($) $ in Millions | Sep. 30, 2024 | Dec. 31, 2023
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unbilled customer revenue | $ 812 | $ 991
Commonwealth Edison Co |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unbilled customer revenue | 338 | 351
PECO Energy Co |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unbilled customer revenue | 149 | 185
Baltimore Gas and Electric Company |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unbilled customer revenue | 135 | 208
Pepco Holdings LLC |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unbilled customer revenue | 190 | 247
Potomac Electric Power Company |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unbilled customer revenue | 83 | 109
Delmarva Power and Light Company |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unbilled customer revenue | 46 | 64
Atlantic City Electric Company |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Unbilled customer revenue | $ 61 | $ 74

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- Definition Unbilled amounts due for services rendered or to be rendered, actions taken or to be taken, or a promise to refrain from taking certain actions in accordance with the terms of a legally binding agreement between the entity and, at a minimum, one other party. An example would be amounts associated with contracts or programs where the recognized revenue for performance thereunder exceeds the amounts billed under the terms thereof as of the date of the balance sheet. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 912 -SubTopic 310 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478345/912-310-45-2 + Details
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