v3.25.2
Income Taxes - Narrative (Details) - USD ($)
$ in Millions
 6 Months Ended
Aug. 16, 2022
Jun. 30, 2025
Dec. 31, 2024
Income Tax Narrative Information [Line Items]      
Tax credit carryforward, valuation allowance   $ 0  
Other accounts receivable, net   1,049 $ 1,016
Notes payable, current   174  
Notes payable, noncurrent   38  
Constellation Energy Corp | General Business Tax Credit Carryforward      
Income Tax Narrative Information [Line Items]      
Separation Cash Payment   127  
Constellation Energy Corp | Indemnification for Taxes      
Income Tax Narrative Information [Line Items]      
Other accounts receivable, net   0  
Other Liabilities   0  
Constellation Energy Corp | Tax Refunds      
Income Tax Narrative Information [Line Items]      
Other accounts receivable, net   0  
Other Liabilities   0  
Commonwealth Edison Co      
Income Tax Narrative Information [Line Items]      
Tax credit carryforward, valuation allowance   0  
Other accounts receivable, net   266 256
PECO Energy Co      
Income Tax Narrative Information [Line Items]      
Tax credit carryforward, valuation allowance   0  
Other accounts receivable, net   137 127
Baltimore Gas and Electric Company      
Income Tax Narrative Information [Line Items]      
Tax credit carryforward, valuation allowance   0  
Other accounts receivable, net   86 107
Pepco Holdings LLC      
Income Tax Narrative Information [Line Items]      
Tax credit carryforward, valuation allowance   0  
Other accounts receivable, net   226 235
Potomac Electric Power Company      
Income Tax Narrative Information [Line Items]      
Tax credit carryforward, valuation allowance   0  
Other accounts receivable, net   120 115
Delmarva Power and Light Company      
Income Tax Narrative Information [Line Items]      
Tax credit carryforward, valuation allowance   0  
Other accounts receivable, net   52 54
Atlantic City Electric Company      
Income Tax Narrative Information [Line Items]      
Tax credit carryforward, valuation allowance   0  
Other accounts receivable, net   $ 56 $ 66
US Treasury (UST) Interest Rate      
Income Tax Narrative Information [Line Items]      
Excess deferred tax amortization 15.00%