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NON-CONTROLLING INTERESTS - Ownership Interest in SSE Holdings (Details) - shares	Dec. 30, 2020	Dec. 25, 2019
Noncontrolling Interest [Line Items]
Number of LLC Interests held by Shake Shack Inc. (in shares)	38,717,790	34,417,302
Number of LLC Interests held by non-controlling interest holders (in shares)	2,951,188	3,145,197
Consolidation, Less than Wholly Owned Subsidiary, Number of Shares	41,668,978	37,562,499
Noncontrolling Interest, Total Ownership Percentage	100.00%	100.00%
Shake Shack Inc.
Noncontrolling Interest [Line Items]
Ownership percent of noncontrolling interest	92.90%	91.60%
Non-Controlling Interest Holders
Noncontrolling Interest [Line Items]
Noncontrolling owners ownership percentage	7.10%	8.40%

X

- Definition

Consolidation, Less than Wholly Owned Subsidiary, Number of Shares

+ References

No definition available.

+ Details

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X

- Definition

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+ References

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- Definition

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- Definition

Noncontrolling Interest, Total Ownership Percentage

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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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- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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