v3.26.1
NON-CONTROLLING INTERESTS - Redemption of LLC Interests (Details) - shares
 3 Months Ended 6 Months Ended
Jul. 01, 2026
Jun. 25, 2025
Jul. 01, 2026
Jun. 25, 2025
Limited Liability Company        
Class of Stock [Line Items]        
Number of LLC Interests received by Shake Shack Inc. (in shares) 20,305 22,320 116,179 175,913
Number of units redeemed (in shares) 5,000 5,000 9,000 15,924
Stock options | Limited Liability Company        
Class of Stock [Line Items]        
Number of LLC Interests received by Shake Shack Inc. (in shares) 15,305 17,320 107,179 159,989
Redemptions by NCI Holders | Limited Liability Company        
Class of Stock [Line Items]        
Number of units redeemed (in shares) 5,000 5,000 9,000 15,924
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) 5,000 5,000 9,000 15,924
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) (5,000) (5,000) (9,000) (15,924)
Shares of Class B common stock surrendered and canceled (in shares) 5,000 5,000 9,000 15,924