REPORTABLE SEGMENTS - Schedule of Sales by Product Lines and Markets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2021	Dec. 27, 2020	Dec. 29, 2019
Segment Reporting Information [Line Items]
Net sales	$ 14,777,458	$ 12,091,901	$ 11,409,219
U.S.
Segment Reporting Information [Line Items]
Net sales	9,113,879	7,496,017	7,636,716
U.S. | Fresh products
Segment Reporting Information [Line Items]
Net sales	7,264,448	6,137,265	6,214,954
U.S. | Prepared foods
Segment Reporting Information [Line Items]
Net sales	898,614	714,563	842,365
U.S. | Export
Segment Reporting Information [Line Items]
Net sales	459,371	306,478	282,791
U.S. | Other Products
Segment Reporting Information [Line Items]
Net sales		337,711
U.S. | Total U.S. reportable segment
Segment Reporting Information [Line Items]
Net sales	9,113,879	7,496,017	7,636,716
U.K. and Europe
Segment Reporting Information [Line Items]
Net sales	3,934,062	3,274,292	2,383,793
U.K. and Europe | Fresh products
Segment Reporting Information [Line Items]
Net sales	1,151,330	1,594,373	1,054,837
U.K. and Europe | Prepared foods
Segment Reporting Information [Line Items]
Net sales	2,214,180	1,237,486	951,718
U.K. and Europe | Export
Segment Reporting Information [Line Items]
Net sales		297,414
U.K. and Europe | Other Products
Segment Reporting Information [Line Items]
Net sales	109,964	145,019	99,023
U.K. and Europe | Total U.K. and Europe reportable segment
Segment Reporting Information [Line Items]
Net sales	3,934,062	3,274,292	2,383,793
Mexico
Segment Reporting Information [Line Items]
Net sales	1,729,517	1,321,592	1,388,710
Mexico | Fresh products
Segment Reporting Information [Line Items]
Net sales	1,515,453	1,210,952	1,245,976
Mexico | Prepared foods
Segment Reporting Information [Line Items]
Net sales	128,208	66,572	95,733
Mexico | Other Products
Segment Reporting Information [Line Items]
Net sales	85,856	44,068	47,001
Mexico | Total Mexico reportable segment
Segment Reporting Information [Line Items]
Net sales	1,729,517	1,321,592	1,388,710
Eliminations
Segment Reporting Information [Line Items]
Net sales	$ 296,900	$ 210,600	$ 188,900