v3.25.2
Debt and Credit Agreements (All Registrants) - Commercial Paper Borrowings (Details) - Commercial Paper - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Short-term Debt [Line Items]    
Commercial paper $ 609 $ 1,359
Short-term debt, weighted average interest rate, at point in time 4.58% 4.66%
Corporate    
Short-term Debt [Line Items]    
Commercial paper $ 176 $ 426
Commonwealth Edison Co    
Short-term Debt [Line Items]    
Commercial paper $ 0 $ 36
Short-term debt, weighted average interest rate, at point in time 0.00% 4.55%
PECO Energy Co    
Short-term Debt [Line Items]    
Commercial paper $ 203 $ 192
Short-term debt, weighted average interest rate, at point in time 4.55% 4.65%
Baltimore Gas and Electric Company    
Short-term Debt [Line Items]    
Commercial paper $ 0 $ 175
Short-term debt, weighted average interest rate, at point in time 0.00% 4.61%
Pepco Holdings LLC    
Short-term Debt [Line Items]    
Commercial paper $ 230 $ 530
Short-term debt, weighted average interest rate, at point in time 4.59% 4.70%
Potomac Electric Power Company    
Short-term Debt [Line Items]    
Commercial paper $ 149 $ 200
Short-term debt, weighted average interest rate, at point in time 4.59% 4.69%
Delmarva Power and Light Company    
Short-term Debt [Line Items]    
Commercial paper $ 2 $ 144
Short-term debt, weighted average interest rate, at point in time 4.53% 4.74%
Atlantic City Electric Company    
Short-term Debt [Line Items]    
Commercial paper $ 79 $ 186
Short-term debt, weighted average interest rate, at point in time 4.58% 4.67%