STOCKHOLDERS' EQUITY (Schedule of Changes in Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 27, 2021	Jun. 28, 2020	Jun. 27, 2021	Jun. 28, 2020
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning of period	$ 2,735,756	$ 2,476,491	$ 2,575,347	$ 2,536,060
Other comprehensive income before reclassifications			80,537	(149,331)
Amounts reclassified from accumulated other comprehensive loss to net income			(590)	1,135
Currency translation			27	(102)
Total other comprehensive income (loss), net of tax	22,075	(48,510)	79,974	(148,298)
Balance, end of period	2,594,512	2,374,399	2,594,512	2,374,399
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning of period	37,279	(174,917)	(20,620)	(75,129)
Total other comprehensive income (loss), net of tax	22,075	(48,510)	79,974	(148,298)
Balance, end of period	59,354	(223,427)	59,354	(223,427)
Gains (Losses) Related to Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning of period			82,782	(1,108)
Other comprehensive income before reclassifications			49,138	(115,547)
Amounts reclassified from accumulated other comprehensive loss to net income			0	0
Currency translation			0	0
Total other comprehensive income (loss), net of tax			49,138	(115,547)
Balance, end of period	131,920	(116,655)	131,920	(116,655)
Losses on Derivative Financial Instruments Classified as Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning of period			(1,191)	(2,406)
Other comprehensive income before reclassifications			2,214	2,003
Amounts reclassified from accumulated other comprehensive loss to net income			(1,320)	580
Currency translation			27	(102)
Total other comprehensive income (loss), net of tax			921	2,481
Balance, end of period	(270)	75	(270)	75
Losses Related to Pension and Other Postretirement Benefits
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning of period			(102,211)	(71,615)
Other comprehensive income before reclassifications			29,185	(35,797)
Amounts reclassified from accumulated other comprehensive loss to net income			730	564
Currency translation			0	0
Total other comprehensive income (loss), net of tax			29,915	(35,233)
Balance, end of period	(72,296)	(106,848)	(72,296)	(106,848)
Gains on Available-for-Sale Securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning of period			0	0
Other comprehensive income before reclassifications			0	10
Amounts reclassified from accumulated other comprehensive loss to net income			0	(9)
Currency translation			0	0
Total other comprehensive income (loss), net of tax			0	1
Balance, end of period	$ 0	$ 1	$ 0	$ 1