CASH FLOW SUPPLEMENTARY INFORMATION Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016	Dec. 26, 2015
Supplemental Cash Flow Elements [Abstract]
Cash and cash equivalents			$ 399,948
Restricted cash included in other current assets			13,652
Total cash, cash equivalents, and restricted cash shown in the statement of cash flows	$ 313,210	$ 492,805	$ 413,600	$ 349,074

Amount of cash and cash equivalents restricted as to withdrawal or usage, classified as current. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant