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DESCRIPTION OF BUSINESS (Details) |  | 3 Months Ended |  |
--- | --- | --- | --- | ---
Apr. 05, 2023 $ / shares shares | Mar. 31, 2024 $ / shares shares | Mar. 26, 2023 offering $ / shares shares | Jun. 30, 2024 food_production_commissary restaurant state | Dec. 31, 2023 restaurant
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Number of states | state |  |  |  | 10 |
Number of food production commissaries | food_production_commissary |  |  |  | 2 |
Number of restaurants | restaurant |  |  |  | 85 | 83
Number of non-traditional locations | restaurant |  |  |  | 2 | 2
Portillo's Inc. | Portillo's Opco |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Ownership % |  |  |  | 84.10% | 76.10%
Portillo's Inc. | Blocker Companies |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Shares acquired (in shares) |  | 2,167,629 |  |  |
Portillo's Inc. | Secondary Offering |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Number of shares issued in transaction (in shares) |  | 8,000,000 | 8,000,000 |  |
Sale of stock, price per share (in usd per share) | $ / shares | $ 21.05 | $ 14.37 | $ 21.05 |  |
Number of offerings | offering |  |  | 1 |  |
Portillo's Inc. | Over-Allotment Option |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Number of shares issued in transaction (in shares) | 620,493 | 1,200,000 |  |  |
Sale of stock, transaction period |  | 30 days |  |  |
LLC Units |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Redemption of LLC Interests (in shares) |  | 5,832,371 |  |  |
Issuance (in shares) |  | 5,832,371 |  |  |
pre-IPO LLC Members |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Redemption of LLC Interests (in shares) |  | 5,832,371 |  |  |
pre-IPO LLC Members | Portillo's Opco |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Ownership % |  |  |  | 15.90% | 23.90%
C&O |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Ownership percentage |  |  |  | 50.00% |

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