v3.26.3
Debt and Credit Agreements (All Registrants) - Commercial Paper Borrowings (Details) - Commercial Paper - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Short-term Debt [Line Items]    
Commercial paper $ 434 $ 612
Short-term debt, weighted average interest rate, at point in time 4.19% 3.94%
Corporate    
Short-term Debt [Line Items]    
Commercial paper $ 434 $ 0
Commonwealth Edison Co    
Short-term Debt [Line Items]    
Commercial paper $ 0 $ 0
Short-term debt, weighted average interest rate, at point in time 0.00% 0.00%
PECO Energy Co    
Short-term Debt [Line Items]    
Commercial paper $ 0 $ 0
Short-term debt, weighted average interest rate, at point in time 0.00% 0.00%
Baltimore Gas and Electric Company    
Short-term Debt [Line Items]    
Commercial paper $ 0 $ 0
Short-term debt, weighted average interest rate, at point in time 0.00% 0.00%
Pepco Holdings LLC    
Short-term Debt [Line Items]    
Commercial paper $ 0 $ 612
Short-term debt, weighted average interest rate, at point in time 0.00% 3.94%
Potomac Electric Power Company    
Short-term Debt [Line Items]    
Commercial paper $ 0 $ 303
Short-term debt, weighted average interest rate, at point in time 0.00% 3.93%
Delmarva Power and Light Company    
Short-term Debt [Line Items]    
Commercial paper $ 0 $ 161
Short-term debt, weighted average interest rate, at point in time 0.00% 3.94%
Atlantic City Electric Company    
Short-term Debt [Line Items]    
Commercial paper $ 0 $ 148
Short-term debt, weighted average interest rate, at point in time 0.00% 3.94%