REVENUE RECOGNITION - Disaggregated Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 27, 2021	Jun. 28, 2020	Jun. 27, 2021	Jun. 28, 2020
Disaggregation of Revenue [Line Items]
Revenue	$ 3,637,698	$ 2,824,023	$ 6,911,123	$ 5,898,951
Chicken
Disaggregation of Revenue [Line Items]
Revenue	3,263,544	2,487,793	6,184,146	5,241,631
Chicken, Fresh
Disaggregation of Revenue [Line Items]
Revenue	2,427,937	1,913,763	4,608,527	3,980,268
Chicken, Prepared
Disaggregation of Revenue [Line Items]
Revenue	482,444	312,355	920,433	747,818
Chicken, Export
Disaggregation of Revenue [Line Items]
Revenue	192,011	140,231	369,532	258,196
Chicken, Other
Disaggregation of Revenue [Line Items]
Revenue	161,152	121,444	285,654	255,349
Chicken and Pork, Export
Disaggregation of Revenue [Line Items]
Revenue	210,657	156,324	404,009	292,340
Chicken and Pork, Other
Disaggregation of Revenue [Line Items]
Revenue	174,322	134,359	299,567	288,991
U.S. | Chicken
Disaggregation of Revenue [Line Items]
Revenue	2,248,469	1,798,689	4,248,029	3,725,568
U.S. | Chicken, Fresh
Disaggregation of Revenue [Line Items]
Revenue	1,807,640	1,452,519	3,405,063	2,994,159
U.S. | Chicken, Prepared
Disaggregation of Revenue [Line Items]
Revenue	207,309	156,268	401,581	372,355
U.S. | Chicken, Export
Disaggregation of Revenue [Line Items]
Revenue	115,844	97,470	229,815	156,323
U.S. | Chicken, Other
Disaggregation of Revenue [Line Items]
Revenue	117,676	92,432	211,570	202,731
U.K. and Europe | Chicken
Disaggregation of Revenue [Line Items]
Revenue	561,692	420,971	1,063,602	922,144
U.K. and Europe | Chicken, Fresh
Disaggregation of Revenue [Line Items]
Revenue	218,002	224,554	428,448	456,507
U.K. and Europe | Chicken, Prepared
Disaggregation of Revenue [Line Items]
Revenue	245,397	137,573	461,709	331,978
U.K. and Europe | Chicken, Export
Disaggregation of Revenue [Line Items]
Revenue	76,167	42,761	139,717	101,873
U.K. and Europe | Chicken, Other
Disaggregation of Revenue [Line Items]
Revenue	22,126	16,083	33,728	31,786
U.K. and Europe | Pork
Disaggregation of Revenue [Line Items]
Revenue	374,154	336,230	726,977	657,320
U.K. and Europe | Pork, Fresh
Disaggregation of Revenue [Line Items]
Revenue	61,966	168,315	238,407	332,997
U.K. and Europe | Pork, Prepared
Disaggregation of Revenue [Line Items]
Revenue	280,372	138,907	440,180	256,537
U.K. and Europe | Pork, Export
Disaggregation of Revenue [Line Items]
Revenue	18,646	16,093	34,477	34,144
U.K. and Europe | Pork, Other
Disaggregation of Revenue [Line Items]
Revenue	13,170	12,915	13,913	33,642
U.K. and Europe | Chicken and Pork, Fresh
Disaggregation of Revenue [Line Items]
Revenue	2,489,903	2,082,078	4,846,934	4,313,265
U.K. and Europe | Chicken and Pork, Prepared
Disaggregation of Revenue [Line Items]
Revenue	762,816	451,262	1,360,613	1,004,355
Mexico | Chicken
Disaggregation of Revenue [Line Items]
Revenue	453,383	268,133	872,515	593,919
Mexico | Chicken, Fresh
Disaggregation of Revenue [Line Items]
Revenue	402,295	236,690	775,016	529,602
Mexico | Chicken, Prepared
Disaggregation of Revenue [Line Items]
Revenue	29,738	18,514	57,143	43,485
Mexico | Chicken, Export
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Mexico | Chicken, Other
Disaggregation of Revenue [Line Items]
Revenue	$ 21,350	$ 12,929	$ 40,356	$ 20,832