v3.25.4
Other Comprehensive Income (Loss) (Reclassification out of Accumulated Other Comprehensive Income) (Details) - USD ($)
$ in Thousands
 3 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Reclassification out of Accumulated Other Comprehensive Income (Loss) [Line Items]    
Net income tax effect $ (6,224) $ (5,964)
Net of income tax expense 21,910 22,073
Reclassification out of Accumulated Other Comprehensive Income    
Reclassification out of Accumulated Other Comprehensive Income (Loss) [Line Items]    
Total reclassifications for the period (5,038) (11,420)
Reclassification out of Accumulated Other Comprehensive Income | Actuarial Loss    
Reclassification out of Accumulated Other Comprehensive Income (Loss) [Line Items]    
Other Nonoperating Income (Expense) 0 0
Reclassification out of Accumulated Other Comprehensive Income | Defined Benefit Plan    
Reclassification out of Accumulated Other Comprehensive Income (Loss) [Line Items]    
Net income tax effect 0 0
Net of income tax expense 0 0
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent    
Reclassification out of Accumulated Other Comprehensive Income (Loss) [Line Items]    
Net income tax effect 1,543 3,392
Net of income tax expense (5,038) (11,420)
Interest Rate Contract | Reclassification out of Accumulated Other Comprehensive Income | Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent    
Reclassification out of Accumulated Other Comprehensive Income (Loss) [Line Items]    
Interest (income) expense, effective portion $ (6,581) $ (14,812)