| Document and Entity Information | Oct. 30, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Oct. 30, 2024 |
| Entity Registrant Name | Li-Cycle Holdings Corp. |
| Entity Incorporation State Country Code | A6 |
| Entity File Number | 001-40733 |
| Entity Tax Identification Number | 00-0000000 |
| Entity Address Address Line 1 | 207 Queens Quay West |
| Entity Address Address Line 2 | Suite 590 |
| Entity Address City Or Town | Toronto |
| Entity Address State Or Province | ON |
| Entity Address Postal Zip Code | M5J IA7 |
| Entity Address Country | CA |
| City Area Code | 877 |
| Local Phone Number | 542-9253 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common shares, without par value |
| Trading Symbol | LICY |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
| Amendment Flag | false |
| Entity Central Index Key | 0001828811 |
