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Corporate Income Taxes - Reconciliation of Statutory Rate (Parenthetical) (Detail)
12 Months Ended
Oct. 31, 2025
Oct. 31, 2024
Disclosure of associates [line items]    
Average effective tax rate 26.20% 20.50%
Top of range [member]    
Disclosure of associates [line items]    
Average effective tax rate 0.80%