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NON-CONTROLLING INTERESTS - Ownership Interest in SSE Holdings (Details) - shares	Sep. 27, 2017	Dec. 28, 2016
Noncontrolling Interest [Abstract]
Number of LLC Interests held by Shake Shack Inc. (in shares)	26,161,111	25,151,384
Number of LLC Interests held by Shake Shack Inc. (as a percentage)	71.20%	69.10%
Number of LLC Interests held by non-controlling interest holders (in shares)	10,567,792	11,253,592
Number of LLC Interests held by non-controlling interest holders (as a percentage)	28.80%	30.90%
Total LLC Interests outstanding (in shares)	36,728,903	36,404,976
Total LLC Interests outstanding (as a percentage)	100.00%	100.00%

X

- Definition

Consolidation, Less than Wholly Owned Subsidiary, Number of Shares

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

X

- Definition

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

+ References

No definition available.

+ Details

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X

- Definition

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

+ References

No definition available.

+ Details

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X

- Definition

Noncontrolling Interest, Total Ownership Percentage

+ References

No definition available.

+ Details

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X

- Definition

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

+ References

No definition available.

+ Details

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- Definition

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

+ References

No definition available.

+ Details

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- References

No definition available.

+ Details

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