PROPERTY, PLANT AND EQUIPMENT (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2018	Mar. 26, 2017	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Depreciation	$ 60,600	$ 55,400
Payments for capital projects	76,681	121,639
Transfer of property, plant and equipment	43,500	56,200
Proceeds from property disposals	1,021	181
Gain on property disposals	80	$ 118
Assets held for sale	2,923		$ 708
Idled assets, carrying amount	53,200
Idled assets, depreciable value	173,600
Idled assets, accumulated depreciation	120,400
U.S. | Reportable Geographical Components
Property, Plant and Equipment [Line Items]
Impairment	$ 500