BUSINESS ACQUISITIONS (Fair Values of Assets Acquired and Liabilities Assumed) (Details) - USD ($) $ in Thousands	Sep. 24, 2017	Jan. 06, 2017	Dec. 25, 2016
Business Acquisition [Line Items]
Goodwill	$ 995,582		$ 887,221
GNP
Business Acquisition [Line Items]
Cash and cash equivalents		$ 10
Trade accounts and other receivables		18,453
Inventories		56,459
Prepaid expenses and other current assets		3,414
Property, plant and equipment		144,138
Identifiable intangible assets		131,120
Other long-lived assets		829
Total assets acquired		354,423
Accounts payable		23,848
Other current liabilities		11,866
Other long-term liabilities		3,393
Total liabilities assumed		39,107
Total identifiable net assets		315,316
Goodwill		41,936
Total net assets		$ 357,252