| Cover | Jan. 25, 2021 |
| IfrsStatementLineItems [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Jan. 25, 2021 |
| Entity File Number | 001-35588 |
| Entity Registrant Name | Franchise Group, Inc. |
| Entity Central Index Key | 0001528930 |
| Entity Tax Identification Number | 27-3561876 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 2387 Liberty Way |
| Entity Address, City or Town | Virginia Beach |
| Entity Address, State or Province | VA |
| Entity Address, Postal Zip Code | 23456 |
| City Area Code | (757) |
| Local Phone Number | 493-8855 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Common Stock, par value $0.01 per share | |
| IfrsStatementLineItems [Line Items] | |
| Title of 12(b) Security | Common Stock, par value $0.01 per share |
| Trading Symbol | FRG |
| Security Exchange Name | NASDAQ |
| 7.50% Series A Cumulative Perpetual Preferred Stock, par value $0.01 per share and liquidation preference of $25.00 per share | |
| IfrsStatementLineItems [Line Items] | |
| Title of 12(b) Security | 7.50% Series A Cumulative Perpetual Preferred Stock, par value $0.01 per share and liquidation preference of $25.00 per share |
| Trading Symbol | FRGAP |
| Security Exchange Name | NASDAQ |
