| Cover | Feb. 20, 2025 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Feb. 20, 2025 |
| Entity Registrant Name | Savers Value Village, Inc. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-41733 |
| Entity Tax Identification Number | 83-4165683 |
| Entity Address, Address Line One | 11400 S.E. 6th Street, Suite 125 |
| Entity Address, City or Town | Bellevue |
| Entity Address, State or Province | WA |
| Entity Address, Postal Zip Code | 98004 |
| City Area Code | 425 |
| Local Phone Number | 462-1515 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common stock, par value $0.000001 |
| Trading Symbol | SVV |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
| Amendment Flag | false |
| Entity Central Index Key | 0001883313 |
