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COMMITMENTS AND CONTINGENCIES (Details) - USD ($)	1 Months Ended	12 Months Ended
	Feb. 28, 2018	Dec. 30, 2020	Dec. 25, 2019	Sep. 26, 2018
Loss Contingencies [Line Items]
Percentage of tax benefits due to equity owners		85.00%
Establishment of tax receivable agreement liability		$ 232,954,000	$ 234,426,000
Retail site
Loss Contingencies [Line Items]
Letters of credit outstanding		130,000
Home Office Lease
Loss Contingencies [Line Items]
Letters of credit outstanding				$ 603,000
Former Shake Shack Manager Litigation
Loss Contingencies [Line Items]
Settlement agreement amount funded	$ 1,200,000	$ 1,180,000
IPO
Loss Contingencies [Line Items]
Percentage of tax benefits due to equity owners		85.00%

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- Definition

Tax Receivable Agreement Liability, Current and Noncurrent

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- Definition

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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Amount awarded to other party in judgment or settlement of litigation.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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