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LONG-TERM DEBT AND FINANCE LEASE OBLIGATIONS - Schedule of Long-Term Debt (Details) - USD ($) $ in Thousands	Jun. 29, 2019	Dec. 30, 2018	Dec. 29, 2018
Debt Instrument [Line Items]
Finance leases (Note 16)	$ 31,511
Finance leases (Note 16)			$ 29,240
Total debt and finance leases	2,088,934		1,684,228
Current portion of long-term debt	30,708		28,228
Current portion of finance leases (Note 16)	3,247
Current portion of finance leases (Note 16)			3,188
Current portion of long-term debt and finance leases	33,955		31,416
Long-term debt and finance leases	2,054,979		1,652,812
Debt discount and debt issuance costs	(14,591)		(16,214)
Long-term debt, net and finance leases	2,040,388	$ 1,610,415	1,636,598
Term loans
Debt Instrument [Line Items]
Long-term debt, gross	712,500		731,250
Revolving facility
Debt Instrument [Line Items]
Long-term debt, gross	839,206		397,452
Senior Notes
Debt Instrument [Line Items]
Long-term debt, gross	500,000		500,000
Other debt
Debt Instrument [Line Items]
Long-term debt, gross	$ 5,717		$ 26,286

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