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EQUITY AND NONCONTROLLING INTERESTS - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2019	Sep. 29, 2018	Sep. 28, 2019	Sep. 29, 2018
Accumulated Other Comprehensive Income (Loss), before Tax [Roll Forward]
Beginning balance	$ 1,458,364	$ 1,185,205	$ 1,319,778	$ 1,047,407
Other comprehensive loss before reclassifications			(8,261)
Amounts reclassified from accumulated other comprehensive loss			1,113
Net current period other comprehensive income (loss)			(7,148)
Income tax expense (benefit)	(2,511)	257	(1,381)	(341)
Ending balance	1,536,387	1,256,709	1,536,387	1,256,709
Foreign Currency Translation Adjustment and Other
Accumulated Other Comprehensive Income (Loss), before Tax [Roll Forward]
Beginning balance			(102,199)
Other comprehensive loss before reclassifications			(8,261)
Amounts reclassified from accumulated other comprehensive loss			0
Net current period other comprehensive income (loss)			(8,261)
Income tax expense (benefit)			(1,615)
Ending balance	(108,845)		(108,845)
Pension and Other Post-Retirement Benefit Plans
Accumulated Other Comprehensive Income (Loss), before Tax [Roll Forward]
Beginning balance			(70,504)
Other comprehensive loss before reclassifications			0
Amounts reclassified from accumulated other comprehensive loss			1,113
Net current period other comprehensive income (loss)			1,113
Income tax expense (benefit)			234
Ending balance	(69,625)		(69,625)
Total
Accumulated Other Comprehensive Income (Loss), before Tax [Roll Forward]
Beginning balance	(166,236)	(153,608)	(172,703)	(144,731)
Ending balance	$ (178,470)	$ (159,448)	$ (178,470)	$ (159,448)