v3.26.1
Accounts Receivable - Unbilled Customer Revenue (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Unbilled customer revenue $ 1,073 $ 1,231
Commonwealth Edison Co    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Unbilled customer revenue 367 301
PECO Energy Co    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Unbilled customer revenue 211 278
Baltimore Gas and Electric Company    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Unbilled customer revenue 206 325
Pepco Holdings LLC    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Unbilled customer revenue 289 327
Potomac Electric Power Company    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Unbilled customer revenue 147 155
Delmarva Power and Light Company    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Unbilled customer revenue 67 100
Atlantic City Electric Company    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Unbilled customer revenue $ 75 $ 72