Government funding - Summary of Deferred Government Funding (Detail) - USD ($)	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2018
Government Funding [Abstract]
Current	$ 0	$ 1,067,318	$ 0
Non-current	0	0	0
Deferred government funding at October 31	$ 0	$ 1,067,318	$ 0

The amount of current government grants recognised in the statement of financial position as deferred income. [Refer: Government [member]; Deferred income; Government grants]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2020-01-01
-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_55&doctype=Standard
-URIDate 2020-01-01

+ Details

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

- Definition

The amount of assistance by government in the form of transfers of resources to an entity in return for past or future compliance with certain conditions relating to the operating activities of the entity, recognised as deferred income. They exclude those forms of government assistance that cannot reasonably have a value placed upon them and transactions with government that cannot be distinguished from the normal trading transactions of the entity. [Refer: Government [member]]

+ References

+ Details

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

- Definition

The amount of non-current government grants recognised on the statement of financial position as deferred income. [Refer: Government [member]; Deferred income; Government grants]

+ References

+ Details

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

- Definition

Government funding.

+ References

No definition available.

+ Details

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Namespace Prefix:	licy_
Data Type:	xbrli:stringItemType
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Period Type:	duration