XML 59 R44.htm IDEA: XBRL DOCUMENT v3.25.3
Income Taxes - Income Tax Expense Table (Detail) - USD ($)
$ in Millions
 12 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2023
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]      
Current Federal Tax Expense (Benefit) $ 30.0 $ 40.8 $ 33.9
Current State and Local Tax Expense (Benefit) 2.8 9.1 7.0
Total 32.8 49.9 40.9
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]      
Deferred Federal Income Tax Expense (Benefit) 14.2 13.4 11.5
Deferred State and Local Income Tax Expense (Benefit) 4.4 3.4 2.3
Total 18.6 16.8 13.8
Income Tax Expense (Benefit), Total $ 51.4 $ 66.7 $ 54.7