STOCKHOLDERS' EQUITY (Schedule of Reclassification from Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2020	Sep. 29, 2019	Sep. 27, 2020	Sep. 29, 2019
Amortization of defined benefit pension and other postretirement plan actuarial losses:
Net sales	$ 3,075,121	$ 2,777,970	$ 8,974,072	$ 8,345,730
Cost of sales	2,761,279	2,495,773	8,363,272	7,476,731
Interest income	(1,763)	(4,698)	(4,611)	(11,481)
Miscellaneous, net	(360)	(1,367)	33,873	(2,521)
Income before income taxes	56,035	156,461	152,640	506,629
Tax benefit	(22,344)	(46,365)	(57,900)	(142,328)
Net income	$ 33,691	$ 110,096	94,740	364,301
Amount Reclassified from Accumulated Other Comprehensive Loss
Amortization of defined benefit pension and other postretirement plan actuarial losses:
Income before income taxes			(70)	(592)
Tax benefit			277	126
Net income			207	(466)
Amount Reclassified from Accumulated Other Comprehensive Loss | Realized gain (loss) on settlement of derivatives classified as cash flow hedges
Amortization of defined benefit pension and other postretirement plan actuarial losses:
Net sales			1,452	0
Cost of sales			(314)	(74)
Interest income			(99)	0
Amount Reclassified from Accumulated Other Comprehensive Loss | Realized gain on sale of securities
Amortization of defined benefit pension and other postretirement plan actuarial losses:
Interest income			18	466
Amount Reclassified from Accumulated Other Comprehensive Loss | Union Plan | Amortization of defined benefit pension and other postretirement plan actuarial losses
Amortization of defined benefit pension and other postretirement plan actuarial losses:
Miscellaneous, net			(72)	(54)
Amount Reclassified from Accumulated Other Comprehensive Loss | Legacy Gold Kits Plans | Amortization of defined benefit pension and other postretirement plan actuarial losses
Amortization of defined benefit pension and other postretirement plan actuarial losses:
Miscellaneous, net			$ (1,055)	$ (930)