PROPERTY, PLANT AND EQUIPMENT (Schedule of Property, Plant and Equipment) (Details) - USD ($) $ in Thousands	Jun. 28, 2015	Dec. 28, 2014
Property, Plant and Equipment [Line Items]
PP&E, gross	$ 2,896,416	$ 2,873,069
Accumulated depreciation	(1,707,295)	(1,690,274)
PP&E, net	1,189,121	1,182,795
Land [Member]
Property, Plant and Equipment [Line Items]
PP&E, gross	71,411	66,798
Buildings [Member]
Property, Plant and Equipment [Line Items]
PP&E, gross	1,076,699	1,086,690
Machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
PP&E, gross	1,555,807	1,537,241
Autos and trucks [Member]
Property, Plant and Equipment [Line Items]
PP&E, gross	49,406	52,639
Construction-in-progress [Member]
Property, Plant and Equipment [Line Items]
PP&E, gross	$ 143,093	$ 129,701