PROPERTY, PLANT AND EQUIPMENT (Schedule of Property, Plant and Equipment) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 28, 2014	Dec. 29, 2013
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 2,873,069	$ 2,769,603
Accumulated depreciation	(1,690,274)	(1,617,792)
Property, plant and equipment, net	1,182,795	1,151,811
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	66,798	66,071
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,086,690	1,077,859
Machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,537,241	1,502,968
Autos and trucks [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	52,639	55,779
Construction-in-progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 129,701	$ 66,926