Cover - shares	3 Months Ended
	Mar. 29, 2025	Apr. 28, 2025
Cover [Abstract]
Document Type	10-Q/A
Document Quarterly Report	true
Document Period End Date	Mar. 29, 2025
Document Transition Report	false
Entity File Number	001-41733
Entity Registrant Name	Savers Value Village, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	83-4165683
Entity Address, Address Line One	11400 S.E. 6th Street
Entity Address, Address Line Two	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
Title of 12(b) Security	Common Stock, par value $0.000001 per share
Trading Symbol	SVV
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		157,451,564
Entity Central Index Key	0001883313
Current Fiscal Year End Date	--01-03
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	Q1
Amendment Flag	true
Amendment Description	Savers Value Village, Inc. is filing this Amendment No. 1 to its Quarterly Report on Form 10-Q for the quarter ended March 29, 2025 as an exhibit only filing solely to re-file Exhibits 31.1 and 31.2 to include a portion of the text required in paragraph 4 of the Section 302 certifications (specifically, subparagraph 4(b) and a portion of the introductory language of paragraph 4), which were inadvertently omitted from the Section 302 certifications included with the original Form 10-Q filed with the Securities and Exchange Commission on May 2, 2025. This Amendment No. 1 to Form 10-Q does not reflect events occurring after the filing of the original Form 10-Q and, other than the re-filing of the referenced certifications, does not modify or update the disclosures in the original Form 10-Q in any way.