Loss per share - Additional Information (Detail)	Aug. 10, 2021
Li Cycle Holdings Corp [Member]
Statement [Line Items]
Scaling of Ordinary Share and Common Share By Exchange Ratio	39.91

Scaling of ordinary share and common share By exchange ratio

No definition available.

Name:	licy_ScalingOfOrdinaryShareAndCommonShareByExchangeRatio
Namespace Prefix:	licy_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant