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NATURE OF OPERATIONS (Details) - Restaurant	Dec. 27, 2023	Dec. 28, 2022
Class of Stock [Line Items]
Number of restaurants	518
Shake Shack Inc.
Class of Stock [Line Items]
Ownership percent of noncontrolling interest	93.30%	93.20%
United States | Company-operated
Class of Stock [Line Items]
Number of restaurants	295
United States | Licensed
Class of Stock [Line Items]
Number of restaurants	39
Other countries | Licensed
Class of Stock [Line Items]
Number of restaurants	184

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