Share capital and share-based compensation - Schedule of Assumptions (Details) - yr	3 Months Ended	9 Months Ended
Jul. 31, 2022	Jul. 31, 2022
Disclosure of classes of share capital [line items]
Expected life of options		6
Expected dividend yield		0.00%
Expected forfeiture rate		0.00%
Minimum
Disclosure of classes of share capital [line items]
Risk free interest rate		1.44%
Expected stock price volatility	65.00%
Maximum
Disclosure of classes of share capital [line items]
Risk free interest rate		1.83%
Expected stock price volatility	70.00%

The expected volatility of the share price used to calculate the fair value of the share options granted. Expected volatility is a measure of the amount by which a price is expected to fluctuate during a period. The measure of volatility used in option pricing models is the annualised standard deviation of the continuously compounded rates of return on the share over a period of time.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2021-01-01
-Paragraph 47
-Subparagraph a
-Clause i
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2021-en-r&anchor=para_47_a_i&doctype=Standard
-URIDate 2021-03-24

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- Definition

The option life of share options granted.

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- Definition

The implied yield currently available on zero-coupon government issues of the country in whose currency the exercise price for share options granted is expressed, with a remaining term equal to the expected term of the option being valued (based on the option's remaining contractual life and taking into account the effects of expected early exercise). [Refer: Government [member]]

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- Definition

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.

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The percentage of an expected dividend used to calculate the fair value of share options granted.

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- Definition

Expected Forfeiture As Percentage, Share Options Granted

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