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INCOME TAXES - Weighted Average Ownership Interest (Details) | 3 Months Ended | 6 Months Ended
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Jun. 26, 2024 | Jun. 28, 2023 | Jun. 26, 2024 | Jun. 28, 2023
Income Tax Disclosure [Abstract] |  |  |  |
Shake Shack's weighted average ownership percentages (in percent) | 93.70% | 93.30% | 93.50% | 93.30%

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- Definition Noncontrolling Interest, Ownership Percentage by Parent, Weighted Average + References No definition available. + Details
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Namespace Prefix: | shak_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_IncomeTaxDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration