Employee Compensation - Summary of Ranges of Values used for each Option Pricing Assumption (Details) |
6 Months Ended | |
|---|---|---|
|
Apr. 30, 2026
yr
$ / shares
|
Apr. 30, 2025
yr
$ / shares
|
|
| Disclosure of terms and conditions of share-based payment arrangement [line items] | ||
| Expected dividend yield | 3.60% | |
| Expected share price volatility | 16.70% | |
| Risk-free rate of return | 3.00% | 2.80% |
| Exercise price | $ / shares | $ 181.30 | $ 141.00 |
| Low | ||
| Disclosure of terms and conditions of share-based payment arrangement [line items] | ||
| Expected dividend yield | 2.50% | |
| Expected share price volatility | 18.50% | |
| Expected period until exercise (in years) | 6.5 | 6.5 |
| High | ||
| Disclosure of terms and conditions of share-based payment arrangement [line items] | ||
| Expected dividend yield | 2.60% | |
| Expected share price volatility | 18.60% | |
| Expected period until exercise (in years) | 7.0 | 7.0 |