The country in which a subsidiary of the entity is incorporated. [Refer: Subsidiaries [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2020-01-01
-Paragraph 16
-Subparagraph b
-Clause ii
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=27&code=ifrs-tx-2020-en-r&anchor=para_16_b_ii&doctype=Standard
-URIDate 2020-01-01

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2020-01-01
-Paragraph 17
-Subparagraph b
-Clause ii
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=27&code=ifrs-tx-2020-en-r&anchor=para_17_b_ii&doctype=Standard
-URIDate 2020-01-01

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2020-01-01
-Paragraph 12
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2020-en-r&anchor=para_12_b&doctype=Standard
-URIDate 2020-01-01

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2020-01-01
-Paragraph 19B
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2020-en-r&anchor=para_19B_b&doctype=Standard
-URIDate 2020-01-01

Name:	ifrs-full_CountryOfIncorporationOrResidenceOfSubsidiary
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Significant accounting policies - Summary of Principal subsidiaries and their geographic location (Detail)				9 Months Ended	12 Months Ended
	Feb. 12, 2021	Sep. 02, 2020	Mar. 28, 2019	Jul. 31, 2021	Oct. 31, 2020
Disclosure of subsidiaries [line items]
Ownership interest	100.00%	100.00%	100.00%
Li Cycle Holdings Corp [member]
Disclosure of subsidiaries [line items]
Location				Ontario, Canada
Ownership interest				100.00%
Li-Cycle Inc.
Disclosure of subsidiaries [line items]
Location				Delaware, U.S.	Delaware, U.S.
Ownership interest			100.00%	100.00%	100.00%
Li-Cycle North America Hub, Inc.
Disclosure of subsidiaries [line items]
Location				Delaware, U.S.	Delaware, U.S.
Ownership interest		100.00%		100.00%	100.00%