v3.25.2
Income Taxes Income Tax Rate Reconciliation (Details)
3 Months Ended 9 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Effective Income Tax Rate Reconciliation, Percent [Abstract]        
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent 21.00% 21.00% 21.00% 21.00%
Adjustments to reconcile to the effective tax rate:        
State income taxes, net of federal benefit 4.00% 3.50% 4.00% 3.50%
Tax benefits from stock compensation 0.00% 0.00% (1.20%) 0.00%
Tax credits (1.40%) (1.80%) (1.40%) (1.80%)
Effective Income Tax Rate Reconciliation, GILTI, percent 0.30% (0.10%) 0.30% (0.10%)
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent (0.60%) (0.40%) (0.60%) (0.40%)
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Percent 1.50% 1.00% 1.50% 1.00%
Effective Income Tax Rate Reconciliation, Uncertain Tax Positions 0.30% 0.40% 0.30% (0.70%)
Valuation allowance adjustment related to stock compensation 0.40% 0.70% 0.40% 0.40%
Other 1.60% 0.90% 0.70% 0.90%
Effective income tax rate 27.10% 25.20% 25.00% 23.80%