v3.25.1
Income Taxes (Detail) - USD ($)
$ in Millions
6 Months Ended
Apr. 30, 2025
Apr. 30, 2024
Oct. 31, 2024
Income Tax Disclosure      
Effective Income Tax Rate Reconciliation, Percent 18.20% 21.60%  
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent 21.00%    
Effective Income Tax Rate Reconciliation, Vesting or Exercise Of Share-based Payment Arrangement, Amount $ 0.4 $ 0.4  
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Amount   $ 0.6  
Valuation allowance     $ 0.8
State and Local Jurisdiction      
Income Tax Disclosure      
Valuation allowance 0.8    
Capital Loss Carryforward      
Income Tax Disclosure      
Valuation allowance $ 3.3   $ 3.3