Revenue Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2023	Apr. 02, 2022
Disaggregation of Revenue [Line Items]
Net sales	$ 1,791,172	$ 1,366,334
Feed Ingredients
Disaggregation of Revenue [Line Items]
Net sales	1,237,494	879,438
Food Ingredients
Disaggregation of Revenue [Line Items]
Net sales	396,392	354,814
Fuel Ingredients
Disaggregation of Revenue [Line Items]
Net sales	157,286	132,082
North America
Disaggregation of Revenue [Line Items]
Net sales	1,125,108	839,738
North America | Feed Ingredients
Disaggregation of Revenue [Line Items]
Net sales	1,025,757	755,838
North America | Food Ingredients
Disaggregation of Revenue [Line Items]
Net sales	99,351	83,900
North America | Fuel Ingredients
Disaggregation of Revenue [Line Items]
Net sales	0	0
Europe
Disaggregation of Revenue [Line Items]
Net sales	457,811	428,555
Europe | Feed Ingredients
Disaggregation of Revenue [Line Items]
Net sales	110,252	114,463
Europe | Food Ingredients
Disaggregation of Revenue [Line Items]
Net sales	190,273	182,010
Europe | Fuel Ingredients
Disaggregation of Revenue [Line Items]
Net sales	157,286	132,082
China
Disaggregation of Revenue [Line Items]
Net sales	82,714	72,943
China | Feed Ingredients
Disaggregation of Revenue [Line Items]
Net sales	5,343	6,636
China | Food Ingredients
Disaggregation of Revenue [Line Items]
Net sales	77,371	66,307
China | Fuel Ingredients
Disaggregation of Revenue [Line Items]
Net sales	0	0
South America
Disaggregation of Revenue [Line Items]
Net sales	104,323	8,496
South America | Feed Ingredients
Disaggregation of Revenue [Line Items]
Net sales	93,539	0
South America | Food Ingredients
Disaggregation of Revenue [Line Items]
Net sales	10,784	8,496
South America | Fuel Ingredients
Disaggregation of Revenue [Line Items]
Net sales	0	0
Other
Disaggregation of Revenue [Line Items]
Net sales	21,216	16,602
Other | Feed Ingredients
Disaggregation of Revenue [Line Items]
Net sales	2,603	2,501
Other | Food Ingredients
Disaggregation of Revenue [Line Items]
Net sales	18,613	14,101
Other | Fuel Ingredients
Disaggregation of Revenue [Line Items]
Net sales	0	0
Fats
Disaggregation of Revenue [Line Items]
Net sales	535,306	420,658
Fats | Feed Ingredients
Disaggregation of Revenue [Line Items]
Net sales	490,318	368,394
Fats | Food Ingredients
Disaggregation of Revenue [Line Items]
Net sales	44,988	52,264
Fats | Fuel Ingredients
Disaggregation of Revenue [Line Items]
Net sales	0	0
Used cooking oil
Disaggregation of Revenue [Line Items]
Net sales	137,693	94,896
Used cooking oil | Feed Ingredients
Disaggregation of Revenue [Line Items]
Net sales	137,693	94,896
Used cooking oil | Food Ingredients
Disaggregation of Revenue [Line Items]
Net sales	0	0
Used cooking oil | Fuel Ingredients
Disaggregation of Revenue [Line Items]
Net sales	0	0
Proteins
Disaggregation of Revenue [Line Items]
Net sales	447,147	270,187
Proteins | Feed Ingredients
Disaggregation of Revenue [Line Items]
Net sales	447,147	270,187
Proteins | Food Ingredients
Disaggregation of Revenue [Line Items]
Net sales	0	0
Proteins | Fuel Ingredients
Disaggregation of Revenue [Line Items]
Net sales	0	0
Bakery
Disaggregation of Revenue [Line Items]
Net sales	74,933	78,511
Bakery | Feed Ingredients
Disaggregation of Revenue [Line Items]
Net sales	74,933	78,511
Bakery | Food Ingredients
Disaggregation of Revenue [Line Items]
Net sales	0	0
Bakery | Fuel Ingredients
Disaggregation of Revenue [Line Items]
Net sales	0	0
Other rendering
Disaggregation of Revenue [Line Items]
Net sales	69,814	57,544
Other rendering | Feed Ingredients
Disaggregation of Revenue [Line Items]
Net sales	69,814	57,544
Other rendering | Food Ingredients
Disaggregation of Revenue [Line Items]
Net sales	0	0
Other rendering | Fuel Ingredients
Disaggregation of Revenue [Line Items]
Net sales	0	0
Food ingredients
Disaggregation of Revenue [Line Items]
Net sales	319,141	270,516
Food ingredients | Feed Ingredients
Disaggregation of Revenue [Line Items]
Net sales	0	0
Food ingredients | Food Ingredients
Disaggregation of Revenue [Line Items]
Net sales	319,141	270,516
Food ingredients | Fuel Ingredients
Disaggregation of Revenue [Line Items]
Net sales	0	0
Bioenergy
Disaggregation of Revenue [Line Items]
Net sales	157,286	132,082
Bioenergy | Feed Ingredients
Disaggregation of Revenue [Line Items]
Net sales	0	0
Bioenergy | Food Ingredients
Disaggregation of Revenue [Line Items]
Net sales	0	0
Bioenergy | Fuel Ingredients
Disaggregation of Revenue [Line Items]
Net sales	157,286	132,082
Other
Disaggregation of Revenue [Line Items]
Net sales	49,852	41,940
Other | Feed Ingredients
Disaggregation of Revenue [Line Items]
Net sales	17,589	9,906
Other | Food Ingredients
Disaggregation of Revenue [Line Items]
Net sales	32,263	32,034
Other | Fuel Ingredients
Disaggregation of Revenue [Line Items]
Net sales	$ 0	$ 0