Financial instruments and financial risk factors - Narrative (Details)	9 Months Ended
Jul. 31, 2022
Currency risk \| Currency in which supplementary information is displayed
Disclosure of detailed information about financial instruments [line items]
Sensitivity analysis for types of market risk, reasonably possible change in risk variable, percent	500.00%

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

No definition available.

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