v3.25.2
Debt and Credit Agreements (All Registrants) - Narrative (Details) - USD ($)
6 Months Ended
Jun. 30, 2025
Jul. 01, 2025
Mar. 14, 2024
Corporate, Non-Segment | ShortTermDebt03232017      
Short-term Debt [Line Items]      
Short-term bank loans and notes payable     $ 500,000,000
Corporate, Non-Segment | ShortTermDebtAmend2 Mar142024      
Short-term Debt [Line Items]      
Short-term bank loans and notes payable     350,000,000
Debt instrument, interest rate terms 1.00%    
Corporate, Non-Segment | ShortTermDebtAmend7 Mar142024      
Short-term Debt [Line Items]      
Short-term bank loans and notes payable     $ 150,000,000
Debt instrument, interest rate terms 1.00%    
Delmarva Power and Light Company | FMB360DueJan2031 [Member] | First Mortgage Bonds      
Short-term Debt [Line Items]      
Amount   $ 78,400,000  
Interest Rate   3.60%  
Revolving Credit Facility | Corporate, Non-Segment      
Short-term Debt [Line Items]      
Line of credit facility, maximum amount outstanding during period $ 0    
Line of credit facility, maximum borrowing capacity $ 900,000,000    
Debt instrument, interest rate terms 1.075%    
Revolving Credit Facility | Commonwealth Edison Co      
Short-term Debt [Line Items]      
Line of credit facility, maximum amount outstanding during period $ 0    
Line of credit facility, maximum borrowing capacity $ 1,000,000,000    
Debt instrument, interest rate terms 1.00%    
Revolving Credit Facility | PECO Energy Co      
Short-term Debt [Line Items]      
Line of credit facility, maximum amount outstanding during period $ 0    
Line of credit facility, maximum borrowing capacity $ 600,000,000    
Debt instrument, interest rate terms 0.90%    
Revolving Credit Facility | Baltimore Gas and Electric Company      
Short-term Debt [Line Items]      
Line of credit facility, maximum amount outstanding during period $ 0    
Line of credit facility, maximum borrowing capacity $ 600,000,000    
Debt instrument, interest rate terms 0.90%    
Revolving Credit Facility | Potomac Electric Power Company      
Short-term Debt [Line Items]      
Line of credit facility, maximum amount outstanding during period $ 0    
Line of credit facility, maximum borrowing capacity $ 300,000,000    
Debt instrument, interest rate terms 1.00%    
Revolving Credit Facility | Delmarva Power and Light Company      
Short-term Debt [Line Items]      
Line of credit facility, maximum amount outstanding during period $ 0    
Line of credit facility, maximum borrowing capacity $ 300,000,000    
Debt instrument, interest rate terms 1.00%    
Revolving Credit Facility | Atlantic City Electric Company      
Short-term Debt [Line Items]      
Line of credit facility, maximum amount outstanding during period $ 0    
Line of credit facility, maximum borrowing capacity $ 300,000,000    
Debt instrument, interest rate terms 1.00%    
Letter of Credit | Commonwealth Edison Co      
Short-term Debt [Line Items]      
Line of credit facility, maximum borrowing capacity $ 40,000,000    
Letter of Credit | PECO Energy Co      
Short-term Debt [Line Items]      
Line of credit facility, maximum borrowing capacity 40,000,000    
Letter of Credit | Baltimore Gas and Electric Company      
Short-term Debt [Line Items]      
Line of credit facility, maximum borrowing capacity 15,000,000    
Letter of Credit | Potomac Electric Power Company      
Short-term Debt [Line Items]      
Line of credit facility, maximum borrowing capacity 15,000,000    
Letter of Credit | Delmarva Power and Light Company      
Short-term Debt [Line Items]      
Line of credit facility, maximum borrowing capacity 15,000,000    
Letter of Credit | Atlantic City Electric Company      
Short-term Debt [Line Items]      
Line of credit facility, maximum borrowing capacity $ 15,000,000