Business Segments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2023	Jul. 02, 2022	Jul. 01, 2023	Jul. 02, 2022	Dec. 31, 2022
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	$ 1,757,621	$ 1,650,188	$ 3,548,793	$ 3,016,522
Cost of sales and operating expenses	1,359,702	1,231,507	2,726,675	2,252,084
Gain on sale of assets	(259)	1,055	68	1,444
Selling, general and administrative expenses	136,751	107,776	272,217	209,808
Restructuring and asset impairment charges	896	8,557	5,420	8,557
Acquisition and integration costs	1,706	5,358	8,728	9,131
Change in fair value of contingent consideration	(7,499)	0	(7,499)	0
Depreciation and amortization	122,086	93,113	238,092	172,359
Equity in net income of Diamond Green Diesel	212,964	73,680	307,301	145,484
Operating income	356,684	278,612	612,529	511,511
Equity in net income of other unconsolidated subsidiaries	1,849	2,272	1,969	3,632
Total other expense	(62,624)	(28,722)	(101,760)	(46,167)
Income before income taxes	295,909	252,162	512,738	468,976
Segment Assets	10,973,239		10,973,239		$ 9,202,370
Feed Ingredients
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	1,141,661	1,170,347	2,379,155	2,049,785
Cost of sales and operating expenses	876,413	864,306	1,826,485	1,509,829
Gross Margin	265,248	306,041	552,670	539,956
Gain on sale of assets	322	(964)	(20)	(1,305)
Selling, general and administrative expenses	77,406	64,863	152,097	121,072
Restructuring and asset impairment charges	0	8,557	92	8,557
Acquisition and integration costs	0	0	0	0
Change in fair value of contingent consideration	(7,499)		(7,499)
Depreciation and amortization	82,575	68,938	172,895	123,288
Equity in net income of Diamond Green Diesel	0	0	0	0
Operating income	112,444	164,647	235,105	288,344
Equity in net income of other unconsolidated subsidiaries	1,849	2,272	1,969	3,632
Segment income/(loss)	114,293	166,919	237,074	291,976
Segment Assets	4,738,648		4,738,648		4,866,351
Food Ingredients
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	476,093	369,181	872,485	723,995
Cost of sales and operating expenses	371,095	280,964	661,210	551,276
Gross Margin	104,998	88,217	211,275	172,719
Gain on sale of assets	2	(73)	(19)	(82)
Selling, general and administrative expenses	33,684	22,855	66,806	49,699
Restructuring and asset impairment charges	896	0	5,328	0
Acquisition and integration costs	0	0	0	0
Change in fair value of contingent consideration	0		0
Depreciation and amortization	28,445	14,449	42,918	29,899
Equity in net income of Diamond Green Diesel	0	0	0	0
Operating income	41,971	50,986	96,242	93,203
Equity in net income of other unconsolidated subsidiaries	0	0	0	0
Segment income/(loss)	41,971	50,986	96,242	93,203
Segment Assets	2,613,854		2,613,854		1,251,473
Fuel Ingredients
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	139,867	110,660	297,153	242,742
Cost of sales and operating expenses	112,194	86,237	238,980	190,979
Gross Margin	27,673	24,423	58,173	51,763
Gain on sale of assets	(65)	(18)	(29)	(57)
Selling, general and administrative expenses	4,971	4,277	11,163	8,197
Restructuring and asset impairment charges	0	0	0	0
Acquisition and integration costs	0	0	0	0
Change in fair value of contingent consideration	0		0
Depreciation and amortization	8,567	6,936	16,960	13,610
Equity in net income of Diamond Green Diesel	212,964	73,680	307,301	145,484
Operating income	227,164	86,908	337,380	175,497
Equity in net income of other unconsolidated subsidiaries	0	0	0	0
Segment income/(loss)	227,164	86,908	337,380	175,497
Segment Assets	2,573,246		2,573,246		2,307,199
Corporate
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	0	0	0	0
Cost of sales and operating expenses	0	0	0	0
Gross Margin	0	0	0	0
Gain on sale of assets	0	0	0	0
Selling, general and administrative expenses	20,690	15,781	42,151	30,840
Restructuring and asset impairment charges	0	0	0	0
Acquisition and integration costs	1,706	5,358	8,728	9,131
Change in fair value of contingent consideration	0		0
Depreciation and amortization	2,499	2,790	5,319	5,562
Equity in net income of Diamond Green Diesel	0	0	0	0
Operating income	(24,895)	(23,929)	(56,198)	(45,533)
Equity in net income of other unconsolidated subsidiaries	0	0	0	0
Segment income/(loss)	(24,895)	(23,929)	(56,198)	(45,533)
Segment Assets	1,047,491		1,047,491		777,347
Total
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	1,757,621	1,650,188	3,548,793	3,016,522
Cost of sales and operating expenses	1,359,702	1,231,507	2,726,675	2,252,084
Gross Margin	397,919	418,681	822,118	764,438
Gain on sale of assets	259	(1,055)	(68)	(1,444)
Selling, general and administrative expenses	136,751	107,776	272,217	209,808
Restructuring and asset impairment charges	896	8,557	5,420	8,557
Acquisition and integration costs	1,706	5,358	8,728	9,131
Change in fair value of contingent consideration	(7,499)		(7,499)
Depreciation and amortization	122,086	93,113	238,092	172,359
Equity in net income of Diamond Green Diesel	212,964	73,680	307,301	145,484
Operating income	356,684	278,612	612,529	511,511
Equity in net income of other unconsolidated subsidiaries	1,849	2,272	1,969	3,632
Segment income/(loss)	358,533	$ 280,884	614,498	$ 515,143
Segment Assets	$ 10,973,239		$ 10,973,239		$ 9,202,370