STOCKHOLDERS' EQUITY (Schedule of Reclassification from Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 29, 2020	Mar. 31, 2019
Amortization of defined benefit pension and other postretirement plan actuarial losses:
Cost of sales	$ 2,897,829	$ 2,505,736
Interest income	(1,690)	(3,340)
Miscellaneous, net	34,188	357
Income before income taxes	105,961	104,541
Tax benefit	(38,512)	(20,416)
Net income	67,449	84,125
Amount Reclassified from Accumulated Other Comprehensive Loss
Amortization of defined benefit pension and other postretirement plan actuarial losses:
Income before income taxes	(1,117)	28
Tax benefit	93	46
Net income	(1,024)	74
Amount Reclassified from Accumulated Other Comprehensive Loss | Realized gain (loss) on settlement of derivative financial instruments classified as cash flow hedges
Amortization of defined benefit pension and other postretirement plan actuarial losses:
Cost of sales	(742)	221
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	0	135
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	(24)	(18)
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	$ (351)	$ (310)