v3.25.2
Derivative Financial Instruments - Narrative (Details) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 6 Months Ended
Feb. 21, 2025
Jun. 30, 2025
Jun. 30, 2025
Dec. 31, 2024
Derivative [Line Items]        
Accumulated Other Comprehensive Income (Loss), Net of Tax   $ (718) $ (718) $ (720)
Corporate, Non-Segment | Notes Payable to Banks        
Derivative [Line Items]        
Derivative, Notional Amount $ 1,000      
Derivative, cash received on hedge 16      
PECO Energy Co        
Derivative [Line Items]        
Incremental collateral for loss of investment grade credit rating   35 35  
Baltimore Gas and Electric Company        
Derivative [Line Items]        
Incremental collateral for loss of investment grade credit rating   48 48  
Delmarva Power and Light Company        
Derivative [Line Items]        
Incremental collateral for loss of investment grade credit rating   14 14  
InterestRateSwapNotionalTerminated | Cash Flow Hedging        
Derivative [Line Items]        
Derivative, Notional Amount 765      
Accumulated Other Comprehensive Income (Loss), Net of Tax $ 13      
InterestRateSwapNotional5YR | Cash Flow Hedging        
Derivative [Line Items]        
Derivative, Notional Amount   $ 305 305 657
Derivative, term of contract   5 years    
InterestRateSwapNotional5YR | Cash Flow Hedging | Corporate, Non-Segment        
Derivative [Line Items]        
Derivative, Notional Amount   $ 30 30  
InterestRateSwapNotional10YR | Cash Flow Hedging        
Derivative [Line Items]        
Derivative, Notional Amount   $ 305 305 658
Derivative, term of contract   10 years    
InterestRateSwapNotional10YR | Cash Flow Hedging | Corporate, Non-Segment        
Derivative [Line Items]        
Derivative, Notional Amount   $ 30 30  
Interest Rate Swap | Cash Flow Hedging        
Derivative [Line Items]        
Derivative, Notional Amount   610 610 $ 1,315
Derivative, Gain (Loss) on Derivative, Net   4 13  
Derivative, Gain (Loss) on Derivative, Net   4 13  
Interest Rate Swap | Cash Flow Hedging | Corporate, Non-Segment        
Derivative [Line Items]        
Derivative, Notional Amount   $ 60 $ 60