| Document and Entity Information Document | Feb. 18, 2023 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Document Creation Date | Feb. 18, 2023 |
| Document Period End Date | Feb. 18, 2023 |
| Amendment Flag | false |
| Entity Registrant Name | SusGlobal Energy Corp. |
| Entity Address, Address Line One | 200 Davenport Road |
| Entity Address, City or Town | Toronto |
| Entity Address, State or Province | ON |
| Entity Address, Country | CA |
| Entity Address, Postal Zip Code | M5R 1J2 |
| Entity Incorporation, State Country Name | DE |
| City Area Code | 416 |
| Local Phone Number | 223-8500 |
| Entity File Number | 000-56024 |
| Entity Central Index Key | 0001652539 |
| Entity Emerging Growth Company | false |
| Entity Tax Identification Number | 38-4039116 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
