0000001 - Document - Cover Page link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - Consolidated Statements of Operations and Comprehensive Income (Unaudited) - Exelon link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - Consolidated Statements of Operations and Comprehensive Income (Unaudited) - ComEd link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - Consolidated Statements of Operations and Comprehensive Income (Unaudited) - PECO link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - Statements of Operations and Comprehensive Income (Unaudited) - BGE link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - Consolidated Statements of Operations and Comprehensive Income (Unaudited) - PHI link:presentationLink link:calculationLink link:definitionLink 9952156 - Statement - Statements of Operations and Comprehensive Income (Unaudited) - 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Disclosure - Fair Value of Financial Assets and Liabilities (All Registrants) link:presentationLink link:calculationLink link:definitionLink 9952202 - Disclosure - Commitments and Contingencies (All Registrants) link:presentationLink link:calculationLink link:definitionLink 9952203 - Disclosure - Changes in Accumulated Other Comprehensive Income (Exelon) link:presentationLink link:calculationLink link:definitionLink 9952204 - Disclosure - Shareholders' Equity (Exelon) link:presentationLink link:calculationLink link:definitionLink 9952205 - Disclosure - Supplemental Financial Information (All Registrants) link:presentationLink link:calculationLink link:definitionLink 9952206 - Disclosure - Related Party Transactions (All Registrants) link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - Significant Accounting Policies (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - Regulatory Matters (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - 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Disclosure - Revenue from Contracts with Customers - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - Revenue from Contracts with Customers - Change in Contract with Customer, Asset and Liability (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - Revenue from Contract with Customer - Performance Obligations (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - Revenue from Contract with Customer - Performance Obligations (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - Segment Information - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - Segment Information - Reconciliation to Consolidated Financial Statements (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - Segment Information - Electric and Gas Revenue by Customer Class (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - Accounts Receivable - Allowance for Credit Losses Rollforward (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - Accounts Receivable - Unbilled Customer Revenue (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - Accounts Receivable - Purchases and Sales of Accounts Receivable (Detail) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - Income Taxes - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - Income Taxes - Reconciliation to Effective Tax Rate (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - Income Taxes - Unrecognized Tax Benefits (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - Income Taxes - Unrecognized Tax Benefits (Details) link:presentationLink link:calculationLink link:definitionLink 9955547 - 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