STOCKHOLDERS' EQUITY - Schedule of Changes in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning of period	$ 2,144,500	$ 2,033,767	$ 2,019,585	$ 1,855,661
Other comprehensive income (loss) before reclassifications			(2,949)	(32,685)
Amounts reclassified from accumulated other comprehensive income (loss) to net income			92	247
Currency translation			12	(6)
Total other comprehensive loss, net of tax	(41,753)	(90,053)	(2,845)	(32,444)
Balance, end of period	2,273,264	2,054,418	2,273,264	2,054,418
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning of period	(88,926)	26,469	(127,834)	(31,140)
Total other comprehensive loss, net of tax	(41,753)	(90,053)	(2,845)	(32,444)
Balance, end of period	(130,679)	(63,584)	(130,679)	(63,584)
Gains (Losses) Related to Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning of period			(55,770)	42,081
Other comprehensive income (loss) before reclassifications			(611)	(38,507)
Amounts reclassified from accumulated other comprehensive income (loss) to net income			0	0
Currency translation			0	0
Total other comprehensive loss, net of tax			(611)	(38,507)
Balance, end of period	(56,381)	3,574	(56,381)	3,574
Unrealized Gains (Losses) on Derivative Financial Instruments Classified as Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning of period			(683)	(1,848)
Other comprehensive income (loss) before reclassifications			388	(97)
Amounts reclassified from accumulated other comprehensive income (loss) to net income			(173)	472
Currency translation			12	(6)
Total other comprehensive loss, net of tax			227	369
Balance, end of period	(456)	(1,479)	(456)	(1,479)
Losses Related to Pension and Other Postretirement Benefits
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning of period			(71,463)	(71,434)
Other comprehensive income (loss) before reclassifications			(2,873)	4,987
Amounts reclassified from accumulated other comprehensive income (loss) to net income			496	455
Currency translation			0	0
Total other comprehensive loss, net of tax			(2,377)	5,442
Balance, end of period	(73,840)	(65,992)	(73,840)	(65,992)
Unrealized Holding Gains (Losses) on Available-for-Sale Securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning of period			82	61
Other comprehensive income (loss) before reclassifications			147	932
Amounts reclassified from accumulated other comprehensive income (loss) to net income			(231)	(680)
Currency translation			0	0
Total other comprehensive loss, net of tax			(84)	252
Balance, end of period	$ (2)	$ 313	$ (2)	$ 313