NON-CONTROLLING INTERESTS - Ownership Interest in SSE Holdings (Details) - shares	Mar. 30, 2016	Dec. 30, 2015
Noncontrolling Interest [Abstract]
Number of LLC Interests held by Shake Shack Inc.	21,700,184	19,789,259
Number of LLC Interests held by Shake Shack Inc. (as a percentage)	59.80%	54.60%
Number of LLC Interests held by non-controlling interest holders	14,582,886	16,460,741
Number of LLC Interests held by non-controlling interest holders (as a percentage)	40.20%	45.40%
Total LLC Interests outstanding	36,283,070	36,250,000
Total LLC Interests outstanding (as a percentage)	100.00%	100.00%

Consolidation, Less than Wholly Owned Subsidiary, Number of Shares

No definition available.

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Consolidation, Less than Wholly Owned Subsidiary, Number of Shares Held by Noncontrolling Owners

No definition available.

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Consolidation, Less than Wholly Owned Subsidiary, Number of Shares Held by Parent

No definition available.

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Noncontrolling Interest, Total Ownership Percentage

No definition available.

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

No definition available.

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

No definition available.

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No definition available.

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