| Cover | Aug. 18, 2022 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Aug. 18, 2022 |
| Entity File Number | 001-35400 |
| Entity Registrant Name | Just Energy Group Inc. |
| Entity Central Index Key | 0001538789 |
| Entity Incorporation, State or Country Code | Z4 |
| Entity Address, Address Line One | 100 King Street West, Suite 2630 |
| Entity Address, City or Town | Toronto |
| Entity Address, State or Province | ON |
| Entity Address, Postal Zip Code | M5X 1E1 |
| City Area Code | 905 |
| Local Phone Number | 795-4206 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
