Employee benefits - Pension and other post-employment benefits - Asset Allocation of Defined Benefit Pension Plans (Parenthetical) (Detail) |
12 Months Ended | |
|---|---|---|
Oct. 31, 2022 |
Oct. 31, 2021 |
|
| Equity securities [member] | Level 1 [member] | ||
| Disclosure of fair value of plan assets [line items] | ||
| Asset allocation of defined benefit pension plans, Quoted in active market, based on direct investments | 34.00% | 41.00% |