v3.25.2
Income Taxes (Tables)
 6 Months Ended
Jun. 30, 2025
Income Tax Disclosure [Abstract]  
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Reconciliation between the statutory rate and effective tax rate:
Six Months Ended June 30
20252024
Federal statutory rate21.0 %21.0 %
State income tax on pretax income, net of federal tax effect6.2 6.2 
Decreases in tax from:
Plant regulatory differences (a)
(4.4)(4.5)
Other, net(0.1)(0.3)
Effective income tax rate22.7 %22.4 %
(a)Plant regulatory differences primarily relate to the credit of excess deferred taxes to customers. Income tax benefits associated with the credit are offset by corresponding revenue reductions.