GENERAL (Details) lb in Millions	12 Months Ended
	Dec. 27, 2020 USD ($) employee bird grower country state lb	Dec. 29, 2019 USD ($)	Dec. 30, 2018 USD ($)	Sep. 08, 2017
Property, Plant and Equipment [Line Items]
Number of countries to which the company exports products | country	115
Number of states in which entity operates | state	14
Advertising costs	$ 20,200,000	$ 26,500,000	$ 20,800,000
Research and development costs	5,400,000	5,100,000	$ 4,000,000.0
Impairment of intangible assets	$ 0	$ 0
Minimum
Property, Plant and Equipment [Line Items]
Estimated closing costs, percent of asset fair value	4.00%
Minimum | Trade Names and Non-Compete Agreements
Property, Plant and Equipment [Line Items]
Intangible assets, estimated useful life	3 years
Minimum | Customer relationships
Property, Plant and Equipment [Line Items]
Intangible assets, estimated useful life	3 years
Minimum | Buildings
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	5 years
Minimum | Automobiles and trucks
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	3 years
Maximum
Property, Plant and Equipment [Line Items]
Estimated closing costs, percent of asset fair value	6.00%
Maximum | Trade Names and Non-Compete Agreements
Property, Plant and Equipment [Line Items]
Intangible assets, estimated useful life	20 years
Maximum | Customer relationships
Property, Plant and Equipment [Line Items]
Intangible assets, estimated useful life	16 years
Maximum | Buildings
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	33 years
Maximum | Automobiles and trucks
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	10 years
Moy Park
Property, Plant and Equipment [Line Items]
Percentage of equity acquired				100.00%
JBS S.A.
Property, Plant and Equipment [Line Items]
Ownership percentage	80.26%
Chicken
Property, Plant and Equipment [Line Items]
Number of employees | employee	56,400
Maximum processing capacity, more than (number of birds per week) | bird	44,900,000
Number of pounds of live product processed annually, more than | lb	13,200.0
Number of contract growers that supply poultry | grower	4,800
Pork
Property, Plant and Equipment [Line Items]
Maximum processing capacity, more than (number of birds per week) | bird	45,000
Number of pounds of live product processed annually, more than | lb	436.7
Number of contract growers that supply poultry | grower	300