v3.25.2
Debt and Credit Agreements (All Registrants) - Issuance of Long-Term Debt (Details) - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2025
Mar. 26, 2025
Corporate | Notes650DueMar2055 | Junior Subordinated Debt    
Debt Instrument [Line Items]    
Interest Rate 6.50%  
Amount $ 1,000  
Debt instrument, term 5 years  
Debt instrument, interest rate terms 1.975%  
Corporate | Notes5125DueMar2031 | Notes Payable to Banks    
Debt Instrument [Line Items]    
Interest Rate 5.125%  
Amount $ 500  
Corporate | Notes5875DueMar2055 | Notes Payable to Banks    
Debt Instrument [Line Items]    
Interest Rate 5.875%  
Amount $ 500  
Potomac Electric Power Company | FMB548DueMar2040 | First Mortgage Bonds    
Debt Instrument [Line Items]    
Interest Rate 5.48%  
Amount $ 200  
Potomac Electric Power Company | FMB578DueSep2055 | First Mortgage Bonds    
Debt Instrument [Line Items]    
Interest Rate   5.78%
Amount   $ 75
Delmarva Power and Light Company | FMB528DueMar2035 | First Mortgage Bonds    
Debt Instrument [Line Items]    
Interest Rate 5.28%  
Amount $ 125  
Atlantic City Electric Company | FMB528DueMar2035 | First Mortgage Bonds    
Debt Instrument [Line Items]    
Interest Rate 5.28%  
Amount $ 100  
Atlantic City Electric Company | FMB554DueNov2040 | First Mortgage Bonds    
Debt Instrument [Line Items]    
Interest Rate   5.54%
Amount   $ 75
Atlantic City Electric Company | FMB581DueNov2055 | First Mortgage Bonds    
Debt Instrument [Line Items]    
Interest Rate   5.81%
Amount   $ 75
Commonwealth Edison Co | FMB595DueJun2055 | First Mortgage Bonds    
Debt Instrument [Line Items]    
Interest Rate 5.95%  
Amount $ 725  
Baltimore Gas and Electric Company | Notes545DueJun2035 [Member] | Notes Payable to Banks    
Debt Instrument [Line Items]    
Interest Rate 5.45%  
Amount $ 650