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NON-CONTROLLING INTERESTS - Ownership Interest in SSE Holdings (Details) - shares	Dec. 31, 2025	Dec. 25, 2024
Noncontrolling Interest [Line Items]
Number of LLC Interests held by Shake Shack Inc. (in shares)	40,254,281	40,068,068
Number of LLC Interests held by non-controlling interest holders (in shares)	2,434,789	2,455,713
Total LLC Interests outstanding (in shares)	42,689,070	42,523,781
Total LLC Interests outstanding (as a percentage)	100.00%	100.00%
Shake Shack Inc.
Noncontrolling Interest [Line Items]
Number of LLC Interests held by Shake Shack Inc. (as a percentage)	94.30%	94.20%
Non-Controlling Interest Holders
Noncontrolling Interest [Line Items]
Number of LLC Interests held by non-controlling interest holders (as a percentage)	5.70%	5.80%

X

- Definition

Consolidation, Less than Wholly Owned Subsidiary, Number of Shares

+ References

No definition available.

+ Details

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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

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+ Details

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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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- 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.

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- Details

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- Details

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