PROPERTY, PLANT AND EQUIPMENT (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 25, 2016	Jun. 28, 2015	Dec. 25, 2016	Dec. 27, 2015	Dec. 28, 2014
Property, Plant and Equipment [Abstract]
Depreciation expense			$ 167,800	$ 146,400	$ 136,400
Expenditures for capital projects			272,467	175,764	171,443
Completed projects transferred from construction-in-progress to depreciable assets			207,100	153,500
Proceeds from property disposals			10,805	14,610	$ 11,108
Gain (loss) on property disposals			7,700	10,400
Assets held for sale	$ 5,259		5,259	$ 6,555
Impairment charges, assets held for sale	1,100	$ 4,800	800
Idled assets property, plant and equipment, net	61,200		61,200
Idled asset property, plant and equipment gross	193,100		193,100
Idled asset accumulated depreciation	$ 131,900		$ 131,900