DEBT - Schedule of Long-term Debt and Other Borrowing Arrangements (Details) - USD ($)			3 Months Ended
	Dec. 14, 2018	Jun. 02, 2018	Mar. 28, 2021	Dec. 27, 2020	Sep. 29, 2017
Debt Instrument [Line Items]
Finance lease obligations			$ 1,561,000	$ 1,664,000
Long-term debt			2,392,264,000	2,298,544,000
Less: Current maturities of long-term debt			(25,457,000)	(25,455,000)
Long-term debt, less current maturities			2,366,807,000	2,273,089,000
Less: Capitalized financing costs			(16,378,000)	(17,543,000)
Long-term debt, less current maturities, net of capitalized financing costs			2,350,429,000	2,255,546,000
Credit facility | Term note payable at 1.37%
Debt Instrument [Line Items]
Long-term debt			443,750,000	450,000,000
Credit facility | Revolving note payable at 1.36%
Debt Instrument [Line Items]
Long-term debt			100,000,000	0
Credit facility | Moy Park Bank of Ireland Revolving Facility with notes payable at LIBOR or EURIBOR plus 1.25% to 2.00%
Debt Instrument [Line Items]
Long-term debt			0	0
Credit facility | Mexico Credit Facility (defined below) with notes payable at TIIE plus 1.50%
Debt Instrument [Line Items]
Long-term debt			$ 0	0
Senior notes | Senior notes payable, net of premium and discount at 5.75%
Debt Instrument [Line Items]
Stated interest rate			5.75%
Long-term debt			$ 1,001,592,000	1,001,693,000
Senior notes | Senior notes payable, net of discount at 5.875%
Debt Instrument [Line Items]
Stated interest rate			5.875%		5.875%
Long-term debt			$ 845,329,000	845,149,000
Credit facility | Credit facility | Term note payable at 1.37%
Debt Instrument [Line Items]
Stated interest rate			1.37%
Long-term debt			$ 443,800,000
Credit facility | Credit facility | Revolving note payable at 1.36%
Debt Instrument [Line Items]
Stated interest rate			1.36%
Credit facility | Credit facility | Moy Park Bank of Ireland Revolving Facility with notes payable at LIBOR or EURIBOR plus 1.25% to 2.00%
Debt Instrument [Line Items]
Long-term debt			$ 0
Credit facility | Credit facility | Moy Park Bank of Ireland Revolving Facility with notes payable at LIBOR or EURIBOR plus 1.25% to 2.00% | LIBOR Rate
Debt Instrument [Line Items]
Basis spread on variable interest rate		1.25%	1.25%
Credit facility | Credit facility | Moy Park Bank of Ireland Revolving Facility with notes payable at LIBOR or EURIBOR plus 1.25% to 2.00% | EURIBOR Rate
Debt Instrument [Line Items]
Basis spread on variable interest rate		2.00%	2.00%
Credit facility | Credit facility | Mexico Credit Facility (defined below) with notes payable at TIIE plus 1.50%
Debt Instrument [Line Items]
Long-term debt			$ 0
Credit facility | Credit facility | Mexico Credit Facility (defined below) with notes payable at TIIE plus 1.50% | TIIE Rate
Debt Instrument [Line Items]
Basis spread on variable interest rate	1.50%		1.50%
Secured loans with payables at weighted average of 3.34%
Debt Instrument [Line Items]
Weighted average interest rate			3.34%
Long-term debt			$ 32,000	$ 38,000