v3.25.1
COVER PAGE - shares
3 Months Ended
Mar. 30, 2025
Apr. 29, 2025
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Mar. 30, 2025  
Document Transition Report false  
Entity File Number 001-40951  
Entity Registrant Name PORTILLO'S INC.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 87-1104304  
Entity Address, Address Line One 2001 Spring Road  
Entity Address, Address Line Two Suite 400  
Entity Address, City or Town Oak Brook  
Entity Address, State or Province IL  
Entity Address, Postal Zip Code 60523  
City Area Code 630  
Local Phone Number 954-3773  
Title of 12(b) Security Class A common stock, $0.01 par value per share  
Trading Symbol PTLO  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Central Index Key 0001871509  
Amendment Flag false  
Current Fiscal Year End Date --12-28  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q1  
Class A Common Stock    
Entity Common Stock, Shares Outstanding (in shares)   64,082,529
Class B Common Stock    
Entity Common Stock, Shares Outstanding (in shares)   10,732,800