Cover - shares	6 Months Ended
	Jun. 30, 2024	Aug. 02, 2024
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2024
Document Transition Report	false
Entity File Number	001-40733
Entity Registrant Name	Li-Cycle Holdings Corp.
Entity Incorporation, State or Country Code	A6
Entity Address, Address Line One	207 Queens Quay West
Entity Address, Address Line Two	Suite 590
Entity Address, City or Town	Toronto
Entity Address, State or Province	ON
Entity Address, Postal Zip Code	M5J 1A7
Entity Address, Country	CA
City Area Code	877
Local Phone Number	542-9253
Title of 12(b) Security	Common shares, without par value
Trading Symbol	LICY
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		22,500,212
Amendment Flag	false
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--12-31
Entity Central Index Key	0001828811