Business Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Oct. 01, 2022	Sep. 30, 2023	Oct. 01, 2022	Dec. 31, 2022
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	$ 1,625,204	$ 1,747,599	$ 5,173,997	$ 4,764,121
Cost of sales and operating expenses	1,238,733	1,371,237	3,965,408	3,623,321
Loss/(gain) on sale of assets	(929)	3,116	(861)	4,560
Selling, general and administrative expenses	137,697	105,080	409,914	314,888
Restructuring and asset impairment charges	0	0	5,420	8,557
Acquisition and integration costs	3,430	4,503	12,158	13,634
Change in fair value of contingent consideration	(5,559)	0	(13,058)	0
Depreciation and amortization	125,994	104,978	364,086	277,337
Equity in net income of Diamond Green Diesel	54,389	103,414	361,690	248,898
Operating income	178,369	268,331	790,898	779,842
Equity in net income of other unconsolidated subsidiaries	1,534	2,301	3,503	5,933
Total other expense	(67,186)	(43,116)	(168,946)	(89,283)
Income before income taxes	112,717	227,516	625,455	696,492
Segment Assets	10,810,337		10,810,337		$ 9,202,370
Feed Ingredients
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	1,047,796	1,273,142	3,426,950	3,322,927
Cost of sales and operating expenses	804,312	1,012,899	2,630,797	2,522,728
Gross Margin	243,484	260,243	796,153	800,199
Loss/(gain) on sale of assets	833	(2,290)	813	(3,595)
Selling, general and administrative expenses	80,985	63,973	233,082	185,045
Restructuring and asset impairment charges			92	8,557
Acquisition and integration costs	0	0	0	0
Change in fair value of contingent consideration	(5,559)		(13,058)
Depreciation and amortization	88,954	80,679	261,849	203,967
Equity in net income of Diamond Green Diesel	0	0	0	0
Operating income	78,271	117,881	313,375	406,225
Equity in net income of other unconsolidated subsidiaries	1,534	2,301	3,503	5,933
Segment income/(loss)	79,805	120,182	316,878	412,158
Segment Assets	4,690,902		4,690,902		4,866,351
Food Ingredients
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	455,744	347,902	1,328,229	1,071,897
Cost of sales and operating expenses	338,208	256,557	999,418	807,833
Gross Margin	117,536	91,345	328,811	264,064
Loss/(gain) on sale of assets	117	(809)	99	(891)
Selling, general and administrative expenses	31,463	23,909	98,269	73,608
Restructuring and asset impairment charges			5,328	0
Acquisition and integration costs	0	0	0	0
Change in fair value of contingent consideration	0		0
Depreciation and amortization	25,418	14,408	68,336	44,307
Equity in net income of Diamond Green Diesel	0	0	0	0
Operating income	60,538	53,837	156,779	147,040
Equity in net income of other unconsolidated subsidiaries	0	0	0	0
Segment income/(loss)	60,538	53,837	156,779	147,040
Segment Assets	2,617,325		2,617,325		1,251,473
Fuel Ingredients
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	121,664	126,555	418,818	369,297
Cost of sales and operating expenses	96,213	101,781	335,193	292,760
Gross Margin	25,451	24,774	83,625	76,537
Loss/(gain) on sale of assets	(21)	(17)	(51)	(74)
Selling, general and administrative expenses	5,666	1,724	16,829	9,921
Restructuring and asset impairment charges			0	0
Acquisition and integration costs	0	0	0	0
Change in fair value of contingent consideration	0		0
Depreciation and amortization	9,026	7,284	25,986	20,894
Equity in net income of Diamond Green Diesel	54,389	103,414	361,690	248,898
Operating income	65,169	119,197	402,551	294,694
Equity in net income of other unconsolidated subsidiaries	0	0	0	0
Segment income/(loss)	65,169	119,197	402,551	294,694
Segment Assets	2,491,075		2,491,075		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
Loss/(gain) on sale of assets	0	0	0	0
Selling, general and administrative expenses	19,583	15,474	61,734	46,314
Restructuring and asset impairment charges			0	0
Acquisition and integration costs	3,430	4,503	12,158	13,634
Change in fair value of contingent consideration	0		0
Depreciation and amortization	2,596	2,607	7,915	8,169
Equity in net income of Diamond Green Diesel	0	0	0	0
Operating income	(25,609)	(22,584)	(81,807)	(68,117)
Equity in net income of other unconsolidated subsidiaries	0	0	0	0
Segment income/(loss)	(25,609)	(22,584)	(81,807)	(68,117)
Segment Assets	1,011,035		1,011,035		777,347
Total
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	1,625,204	1,747,599	5,173,997	4,764,121
Cost of sales and operating expenses	1,238,733	1,371,237	3,965,408	3,623,321
Gross Margin	386,471	376,362	1,208,589	1,140,800
Loss/(gain) on sale of assets	929	(3,116)	861	(4,560)
Selling, general and administrative expenses	137,697	105,080	409,914	314,888
Restructuring and asset impairment charges			5,420	8,557
Acquisition and integration costs	3,430	4,503	12,158	13,634
Change in fair value of contingent consideration	(5,559)		(13,058)
Depreciation and amortization	125,994	104,978	364,086	277,337
Equity in net income of Diamond Green Diesel	54,389	103,414	361,690	248,898
Operating income	178,369	268,331	790,898	779,842
Equity in net income of other unconsolidated subsidiaries	1,534	2,301	3,503	5,933
Segment income/(loss)	179,903	$ 270,632	794,401	$ 785,775
Segment Assets	$ 10,810,337		$ 10,810,337		$ 9,202,370