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Document and Entity Information - USD ($)
 12 Months Ended
Dec. 30, 2023
Feb. 03, 2024
Jul. 01, 2023
Document and Entity Information      
Document Type 10-K    
Document Annual Report true    
Document Transition Report false    
Document Period End Date Dec. 30, 2023    
Entity File Number 0-22684    
Entity Registrant Name UFP INDUSTRIES, INC.    
Entity Incorporation, State or Country Code MI    
Entity Tax Identification Number 38-1465835    
Entity Address, Address Line One 2801 East Beltline, N.E.    
Entity Address, City or Town Grand Rapids    
Entity Address, State or Province MI    
Entity Address, Postal Zip Code 49525    
City Area Code 616    
Local Phone Number 364-6161    
Title of 12(b) Security Common Stock, $1 par value    
Trading Symbol UFPI    
Security Exchange Name NASDAQ    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Document Financial Statement Error Correction [Flag] false    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding (in shares)   61,624,287  
ICFR Auditor Attestation Flag true    
Auditor Name Deloitte & Touche LLP    
Auditor Firm ID 34    
Auditor Location Grand Rapids, MI    
Current Fiscal Year End Date --12-30    
Document Fiscal Year Focus 2023    
Document Fiscal Period Focus FY    
Entity Central Index Key 0000912767    
Amendment Flag false    
Entity Public Float     $ 5,684,288,927
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No