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Document and Entity Information
Mar. 03, 2023
Cover [Abstract]  
Entity Registrant Name Portillo's Inc.
Amendment Flag false
Entity Central Index Key 0001871509
Document Type 8-K
Document Period End Date Mar. 03, 2023
Entity File Number 1-40951
Entity Incorporation State 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
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Security 12b Title Class A Common Stock, $0.01 par value per share
Trading Symbol PTLO
Security Exchange Name NASDAQ
Entity Emerging Growth Company true
Entity Ex Transition Period false