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NON-CONTROLLING INTERESTS - Changes in Ownership Interests in SSE Holdings (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Jun. 28, 2023
Mar. 29, 2023
Jun. 29, 2022
Mar. 30, 2022
Dec. 27, 2023
Dec. 28, 2022
Dec. 29, 2021
Noncontrolling Interest [Line Items]              
Net income (loss) attributable to Shake Shack Inc.         $ 20,264 $ (21,229) $ (4,561)
Other comprehensive income (loss):              
Unrealized holding loss on foreign currency translation adjustment $ 0 $ (4) $ (1) $ (1) (3) (1) (2)
Transfers (to) from non-controlling interests:              
Total effect of changes in ownership interest on equity (loss) attributable to Shake Shack Inc.         17,255 (23,895) (2,701)
Unrealized holding gains on equity securities              
Other comprehensive income (loss):              
Unrealized holding loss on foreign currency translation adjustment $ 0 $ (4) $ (1) $ (1) (3) (1) (2)
Additional Paid-In Capital | Redemption or Exchange of Units              
Transfers (to) from non-controlling interests:              
Increase (decrease) in additional paid-in capital         265 313 33
Additional Paid-In Capital | Employee Stock Option              
Transfers (to) from non-controlling interests:              
Increase (decrease) in additional paid-in capital         $ (3,271) $ (2,978) $ 1,829