SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Comprehensive Income (Loss) (Details) $ in Thousands	12 Months Ended
	Dec. 26, 2020 USD ($)
Components of accumulated other comprehensive income (loss)
Beginning balance	$ 1,189,745	[1]
Ending balance	1,207,836
Foreign Currency Translation Adjustments
Components of accumulated other comprehensive income (loss)
Beginning balance	(232,575)
Current-period comprehensive income (loss)	19,511
Ending balance	(213,064)
Gain on Hedging Activities
Components of accumulated other comprehensive income (loss)
Beginning balance	14,076
Current-period comprehensive income (loss)	1,474
Ending balance	15,550
Defined Benefit Pension Plan
Components of accumulated other comprehensive income (loss)
Beginning balance	(94,923)
Current-period comprehensive income (loss)	(17,349)
Ending balance	(112,272)
Accumulated Other Comprehensive Income (Loss)
Components of accumulated other comprehensive income (loss)
Beginning balance	(313,422)	[1]
Current-period comprehensive income (loss)	3,636
Ending balance	$ (309,786)

[1] The retained earnings balance has been revised from the amounts previously reported as a result of the change in inventory valuation method from LIFO to FIFO. Refer to Note 1 for additional information.