Product sales revenue - Schedule of product sales revenue (Details) - USD ($)	3 Months Ended	6 Months Ended
Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2022	Apr. 30, 2021
Product sales revenue [Abstract]
Product revenue recognized in the period	$ 4,319,640	$ 283,637	$ 6,203,617	$ 920,999
Fair value pricing adjustments	3,971,482	(107,535)	5,709,952	167,969
Total product sales	$ 8,291,122	$ 176,102	$ 11,913,569	$ 1,088,968

The amount of revenue arising from the sale of goods. [Refer: Revenue]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 112
-Subparagraph c
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-URIDate 2021-03-24

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration