XML 68 R53.htm IDEA: XBRL DOCUMENT v3.25.2
INCOME TAX EXPENSE - Reconciliation of Taxes from Federal Statutory Rate to Total Income Tax Expense (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Reconciliation of Taxes from Federal Statutory Rate to Total Income Tax Expense [Abstract]        
Income Before Income Taxes $ 6.0 $ 21.1 $ 48.2 $ 62.1
Statutory Federal Income Tax Rate 21.00% 21.00% 21.00% 21.00%
Income Taxes Computed at Statutory Federal Rate $ 1.2 $ 4.4 $ 10.1 $ 13.0
Increase (Decrease) in Income Tax Due to:        
State Income Taxes – Net of Federal Income Tax Benefit 0.9 2.5 5.7 7.1
Production Tax Credits (1.6) (5.1) (6.4) (16.7)
Investment Tax Credits (0.8) (0.9) (3.6) (1.2)
Regulatory Differences – Excess Deferred Tax (1.9) (2.2) (4.5) (5.7)
Non-Controlling Interest in Subsidiaries 4.9 2.4 8.9 5.2
AFUDC – Equity (0.3) (0.3) (0.7) (0.9)
Nondeductible Portion of Transaction Costs 0.5 3.3 0.8 3.3
Other (3.5) (2.7) (3.4) 1.3
Total Income Tax Expense (Benefit) $ (0.6) $ 1.4 $ 6.9 $ 5.4