Cas and Cash Equivalents - Additional Information (Details) $ in Millions	Jul. 31, 2021 USD ($)
Cash And Cash Equivalents [Abstract]
Designated cash	$ 30.0

The amount of bank acceptances recognised as liabilities.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_55&doctype=Standard
-URIDate 2021-03-24

Name:	ifrs-full_BankAcceptanceLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant