SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Comprehensive Income (Details) $ in Thousands	9 Months Ended
	Sep. 25, 2021 USD ($)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning	$ 1,182,062
Balance, ending	1,318,139
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning	(213,064)
Current-period comprehensive income (loss)	(16,643)
Balance, ending	(229,707)
Gain on Hedging Activities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning	15,550
Current-period comprehensive income (loss)	14,369
Balance, ending	29,919
Defined Benefit Pension Plan
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning	(112,272)
Current-period comprehensive income (loss)	1,838
Balance, ending	(110,434)
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning	(309,786)
Current-period comprehensive income (loss)	(436)
Balance, ending	$ (310,222)