v3.25.2
Income Taxes - Reconciliation to Effective Tax Rate (Details)
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate [Line Items]        
U.S. Federal statutory rate 21.00% 21.00% 21.00% 21.00%
State income taxes, net of federal income tax benefit 6.50% 5.00% 5.50% 5.80%
Plant basis differences (5.40%) (3.90%) (4.30%) (3.90%)
Excess deferred tax amortization (6.50%) (13.20%) (6.50%) (14.10%)
Amortization of investment tax credit, including deferred taxes on basis difference 0.00% (0.10%) 0.00% (0.10%)
Tax credits (0.40%) (0.50%) (0.50%) (0.50%)
Other 0.00% 1.00% 0.40% 0.80%
Effective income tax rate 15.20% 9.30% 15.60% 9.00%
Commonwealth Edison Co        
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate [Line Items]        
U.S. Federal statutory rate 21.00% 21.00% 21.00% 21.00%
State income taxes, net of federal income tax benefit 7.60% 7.80% 7.60% 7.80%
Plant basis differences (0.90%) (0.80%) (0.90%) (0.80%)
Excess deferred tax amortization (8.60%) (17.40%) (9.00%) (18.00%)
Amortization of investment tax credit, including deferred taxes on basis difference (0.10%) (0.10%) (0.10%) (0.10%)
Tax credits (0.60%) (0.50%) (0.70%) (0.50%)
Other 0.20% 0.30% 0.20% 0.20%
Effective income tax rate 18.60% 10.30% 18.10% 9.60%
PECO Energy Co        
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate [Line Items]        
U.S. Federal statutory rate 21.00% 21.00% 21.00% 21.00%
State income taxes, net of federal income tax benefit (1.20%) (1.30%) (2.80%) (0.90%)
Plant basis differences (16.10%) (13.00%) (12.80%) (12.50%)
Excess deferred tax amortization (1.50%) (2.30%) (1.50%) (2.30%)
Amortization of investment tax credit, including deferred taxes on basis difference 0.00% 0.00% 0.00% 0.00%
Tax credits 0.00% 0.00% 0.00% 0.00%
Other 0.70% (1.20%) 0.20% (0.10%)
Effective income tax rate 2.90% 3.20% 4.10% 5.20%
Baltimore Gas and Electric Company        
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate [Line Items]        
U.S. Federal statutory rate 21.00% 21.00% 21.00% 21.00%
State income taxes, net of federal income tax benefit 6.20% 6.40% 6.20% 6.30%
Plant basis differences (1.50%) (1.80%) (1.50%) (1.30%)
Excess deferred tax amortization (4.10%) (17.50%) (4.10%) (17.50%)
Amortization of investment tax credit, including deferred taxes on basis difference 0.00% 0.00% 0.00% 0.00%
Tax credits (0.40%) (0.50%) (0.30%) (0.40%)
Other 0.20% 0.70% 0.00% 0.20%
Effective income tax rate 21.40% 8.30% 21.30% 8.30%
Pepco Holdings LLC        
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate [Line Items]        
U.S. Federal statutory rate 21.00% 21.00% 21.00% 21.00%
State income taxes, net of federal income tax benefit 7.10% 6.60% 6.70% 6.50%
Plant basis differences (0.60%) (0.90%) (0.70%) (0.90%)
Excess deferred tax amortization (4.40%) (3.80%) (4.10%) (5.30%)
Amortization of investment tax credit, including deferred taxes on basis difference 0.00% (0.10%) 0.00% (0.10%)
Tax credits (0.30%) (0.40%) (0.30%) (0.40%)
Other (0.10%) 0.10% 0.10% 0.10%
Effective income tax rate 22.70% 22.50% 22.70% 20.90%
Potomac Electric Power Company        
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate [Line Items]        
U.S. Federal statutory rate 21.00% 21.00% 21.00% 21.00%
State income taxes, net of federal income tax benefit 6.30% 6.10% 6.40% 6.10%
Plant basis differences (0.90%) (1.50%) (1.00%) (1.40%)
Excess deferred tax amortization (5.50%) (4.80%) (5.30%) (6.80%)
Amortization of investment tax credit, including deferred taxes on basis difference 0.00% 0.00% 0.00% 0.00%
Tax credits (0.40%) (0.40%) (0.30%) (0.40%)
Other 0.30% 0.20% 0.20% 0.20%
Effective income tax rate 20.80% 20.60% 21.00% 18.70%
Delmarva Power and Light Company        
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate [Line Items]        
U.S. Federal statutory rate 21.00% 21.00% 21.00% 21.00%
State income taxes, net of federal income tax benefit 6.40% 6.20% 6.40% 6.20%
Plant basis differences (0.60%) (0.90%) (0.50%) (1.00%)
Excess deferred tax amortization (4.50%) (6.60%) (3.70%) (5.80%)
Amortization of investment tax credit, including deferred taxes on basis difference (0.10%) (0.10%) (0.10%) (0.10%)
Tax credits (0.30%) (0.30%) (0.30%) (0.30%)
Other 0.10% (0.30%) 0.10% (0.20%)
Effective income tax rate 22.00% 19.00% 22.90% 19.80%
Atlantic City Electric Company        
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate [Line Items]        
U.S. Federal statutory rate 21.00% 21.00% 21.00% 21.00%
State income taxes, net of federal income tax benefit 7.10% 7.60% 7.10% 7.40%
Plant basis differences 0.00% 0.20% (0.20%) 0.10%
Excess deferred tax amortization (1.90%) (1.60%) (1.60%) (1.50%)
Amortization of investment tax credit, including deferred taxes on basis difference (0.10%) (0.10%) (0.10%) (0.10%)
Tax credits (0.30%) (0.20%) (0.30%) (0.30%)
Other 1.50% 0.70% 0.40% (0.10%)
Effective income tax rate 27.30% 27.60% 26.30% 26.50%