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NON-CONTROLLING INTERESTS - Weighted Average Ownership Percentages (Details)	3 Months Ended		6 Months Ended
	Jun. 26, 2024	Jun. 28, 2023	Jun. 26, 2024	Jun. 28, 2023
Noncontrolling Interest [Abstract]
Non-controlling interest holders' weighted average ownership percentages	6.30%	6.70%	6.50%	6.70%

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- Definition

Noncontrolling Interest, Weighted Average Ownership Percentage

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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_NoncontrollingInterestAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration