Revenue Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Disaggregation of Revenue [Line Items]
Net sales	$ 1,455,292	$ 1,757,621	$ 2,875,591	$ 3,548,793
Feed Ingredients
Disaggregation of Revenue [Line Items]
Net sales	934,147	1,141,661	1,823,995	2,379,155
Food Ingredients
Disaggregation of Revenue [Line Items]
Net sales	378,841	476,093	770,123	872,485
Fuel Ingredients
Disaggregation of Revenue [Line Items]
Net sales	142,304	139,867	281,473	297,153
North America
Disaggregation of Revenue [Line Items]
Net sales	820,345	1,047,488	1,619,255	2,172,596
North America | Feed Ingredients
Disaggregation of Revenue [Line Items]
Net sales	719,783	946,100	1,411,629	1,971,857
North America | Food Ingredients
Disaggregation of Revenue [Line Items]
Net sales	100,562	101,388	207,626	200,739
North America | Fuel Ingredients
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Europe
Disaggregation of Revenue [Line Items]
Net sales	416,183	463,124	825,598	920,935
Europe | Feed Ingredients
Disaggregation of Revenue [Line Items]
Net sales	107,777	96,064	208,570	206,316
Europe | Food Ingredients
Disaggregation of Revenue [Line Items]
Net sales	166,102	227,193	335,555	417,466
Europe | Fuel Ingredients
Disaggregation of Revenue [Line Items]
Net sales	142,304	139,867	281,473	297,153
China
Disaggregation of Revenue [Line Items]
Net sales	69,985	77,574	136,232	160,288
China | Feed Ingredients
Disaggregation of Revenue [Line Items]
Net sales	8,058	6,160	12,836	11,503
China | Food Ingredients
Disaggregation of Revenue [Line Items]
Net sales	61,927	71,414	123,396	148,785
China | Fuel Ingredients
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
South America
Disaggregation of Revenue [Line Items]
Net sales	132,081	144,786	261,199	249,109
South America | Feed Ingredients
Disaggregation of Revenue [Line Items]
Net sales	94,908	90,293	183,753	183,832
South America | Food Ingredients
Disaggregation of Revenue [Line Items]
Net sales	37,173	54,493	77,446	65,277
South America | Fuel Ingredients
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Other
Disaggregation of Revenue [Line Items]
Net sales	16,698	24,649	33,307	45,865
Other | Feed Ingredients
Disaggregation of Revenue [Line Items]
Net sales	3,621	3,044	7,207	5,647
Other | Food Ingredients
Disaggregation of Revenue [Line Items]
Net sales	13,077	21,605	26,100	40,218
Other | Fuel Ingredients
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Fats
Disaggregation of Revenue [Line Items]
Net sales	352,749	443,494	702,286	978,800
Fats | Feed Ingredients
Disaggregation of Revenue [Line Items]
Net sales	314,675	405,287	625,922	895,605
Fats | Food Ingredients
Disaggregation of Revenue [Line Items]
Net sales	38,074	38,207	76,364	83,195
Fats | Fuel Ingredients
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Used cooking oil
Disaggregation of Revenue [Line Items]
Net sales	96,126	146,275	171,926	283,968
Used cooking oil | Feed Ingredients
Disaggregation of Revenue [Line Items]
Net sales	96,126	146,275	171,926	283,968
Used cooking oil | Food Ingredients
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Used cooking oil | Fuel Ingredients
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Proteins
Disaggregation of Revenue [Line Items]
Net sales	382,556	435,956	750,156	883,103
Proteins | Feed Ingredients
Disaggregation of Revenue [Line Items]
Net sales	382,556	435,956	750,156	883,103
Proteins | Food Ingredients
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Proteins | Fuel Ingredients
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Bakery
Disaggregation of Revenue [Line Items]
Net sales	48,504	67,263	93,404	142,196
Bakery | Feed Ingredients
Disaggregation of Revenue [Line Items]
Net sales	48,504	67,263	93,404	142,196
Bakery | Food Ingredients
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Bakery | Fuel Ingredients
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Other rendering
Disaggregation of Revenue [Line Items]
Net sales	79,541	70,265	156,242	140,079
Other rendering | Feed Ingredients
Disaggregation of Revenue [Line Items]
Net sales	79,541	70,265	156,242	140,079
Other rendering | Food Ingredients
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Other rendering | Fuel Ingredients
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Food ingredients
Disaggregation of Revenue [Line Items]
Net sales	315,317	412,307	646,348	731,448
Food ingredients | Feed Ingredients
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Food ingredients | Food Ingredients
Disaggregation of Revenue [Line Items]
Net sales	315,317	412,307	646,348	731,448
Food ingredients | Fuel Ingredients
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Bioenergy
Disaggregation of Revenue [Line Items]
Net sales	142,304	139,867	281,473	297,153
Bioenergy | Feed Ingredients
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Bioenergy | Food Ingredients
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Bioenergy | Fuel Ingredients
Disaggregation of Revenue [Line Items]
Net sales	142,304	139,867	281,473	297,153
Other
Disaggregation of Revenue [Line Items]
Net sales	38,195	42,194	73,756	92,046
Other | Feed Ingredients
Disaggregation of Revenue [Line Items]
Net sales	12,745	16,615	26,345	34,204
Other | Food Ingredients
Disaggregation of Revenue [Line Items]
Net sales	25,450	25,579	47,411	57,842
Other | Fuel Ingredients
Disaggregation of Revenue [Line Items]
Net sales	$ 0	$ 0	$ 0	$ 0