SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Comprehensive Income (Details) $ in Thousands	6 Months Ended
	Jun. 26, 2021 USD ($)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning	$ 1,182,062
Balance, ending	1,294,623
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning	(213,064)
Current-period comprehensive income (loss)	(2,496)
Balance, ending	(215,560)
Gain on Hedging Activities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning	15,550
Current-period comprehensive income (loss)	27,172
Balance, ending	42,722
Defined Benefit Pension Plan
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning	(112,272)
Current-period comprehensive income (loss)	1,675
Balance, ending	(110,597)
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning	(309,786)
Current-period comprehensive income (loss)	26,351
Balance, ending	$ (283,435)