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NON-CONTROLLING INTERESTS - Redemption of LLC Interests (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 26, 2024	Jun. 28, 2023	Jun. 26, 2024	Jun. 28, 2023
Limited Liability Company
Class of Stock [Line Items]
Number of LLC Interests received by Shake Shack Inc. (in shares)	331,591	44,341	492,658	164,248
Number of units redeemed (in shares)	313,077	0	346,577	25,000
Stock options | Limited Liability Company
Class of Stock [Line Items]
Number of LLC Interests received by Shake Shack Inc. (in shares)	18,514	44,341	146,081	139,248
Redemptions by NCI Holders | Limited Liability Company
Class of Stock [Line Items]
Number of units redeemed (in shares)	313,077	0	346,577	25,000
Common Stock | Class A Common Stock
Class of Stock [Line Items]
Shares of Class A common stock issued in connection with redemptions of LLC Interests (in shares)	313,077	0	346,577	25,000
Common Stock | Class B Common Stock
Class of Stock [Line Items]
Shares of Class A common stock issued in connection with redemptions of LLC Interests (in shares)	(313,077)	0	(346,577)	(25,000)
Shares of Class B common stock surrendered and canceled (in shares)	313,077	0	346,577	25,000

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