STOCKHOLDERS' EQUITY (Schedule of Changes in Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Apr. 01, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning of period	$ 2,019,585	$ 1,855,661
Amounts reclassified from accumulated other comprehensive income (loss) to net income	(74)	348
Total other comprehensive income, net of tax	38,908	57,609
Balance, end of period	2,144,500	2,033,767
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning of period	(127,834)	(31,140)
Other comprehensive income (loss) before reclassifications	38,965	57,277
Amounts reclassified from accumulated other comprehensive income (loss) to net income	(74)	348
Currency translation	17	(16)
Total other comprehensive income, net of tax	38,908	57,609
Balance, end of period	(88,926)	26,469
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	37,442	52,528
Amounts reclassified from accumulated other comprehensive income (loss) to net income	0	0
Currency translation	0	0
Total other comprehensive income, net of tax	37,442	52,528
Balance, end of period	(18,328)	94,609
Unrealized 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	(915)	1
Amounts reclassified from accumulated other comprehensive income (loss) to net income	(221)	250
Currency translation	17	(16)
Total other comprehensive income, net of tax	(1,119)	235
Balance, end of period	(1,802)	(1,613)
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	2,421	4,465
Amounts reclassified from accumulated other comprehensive income (loss) to net income	248	228
Currency translation	0	0
Total other comprehensive income, net of tax	2,669	4,693
Balance, end of period	(68,794)	(66,741)
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	17	283
Amounts reclassified from accumulated other comprehensive income (loss) to net income	(101)	(130)
Currency translation	0	0
Total other comprehensive income, net of tax	(84)	153
Balance, end of period	$ (2)	$ 214