Consolidated Statements of Stockholders’ Equity - USD ($) $ in Thousands	Total	Commodity Contract	Interest Rate Swap	Foreign Exchange Contract	Stockholders' equity attributable to Darling	Stockholders' equity attributable to Darling Commodity Contract	Stockholders' equity attributable to Darling Interest Rate Swap	Stockholders' equity attributable to Darling Foreign Exchange Contract	Common Stock	Additional Paid-In Capital	Treasury Stock	Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss Commodity Contract	Accumulated Other Comprehensive Loss Interest Rate Swap	Accumulated Other Comprehensive Loss Foreign Exchange Contract	Retained Earnings	Non-controlling Interests
Beginning balance (in shares) at Dec. 30, 2023									159,533,789
Beginning balance at Dec. 30, 2023	$ 4,693,691				$ 4,605,431				$ 1,744	$ 1,697,787	$ (629,008)	$ (198,346)				$ 3,733,254	$ 88,260
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	81,588				81,157											81,157	431
Pension adjustments, net of tax	262				262							262
Derivative adjustments		$ (31,758)	$ 4,077	$ (6,859)		$ (31,758)	$ 4,077	$ (6,859)					$ (31,758)	$ 4,077	$ (6,859)
Foreign currency translation adjustments	(64,670)				(65,840)							(65,840)					1,170
Issuance of non-vested stock	47				47					47
Stock-based compensation	12,789				12,789					12,789
Treasury stock (in shares)									(179,955)
Treasury stock	(7,908)				(7,908)						(7,908)
Issuance of common stock (in shares)									425,723
Issuance of common stock	1,731				1,731				$ 5	1,726
Ending balance (in shares) at Mar. 30, 2024									159,779,557
Ending balance at Mar. 30, 2024	4,682,990				4,593,129				$ 1,749	1,712,349	(636,916)	(298,464)				3,814,411	89,861
Beginning balance (in shares) at Dec. 30, 2023									159,533,789
Beginning balance at Dec. 30, 2023	4,693,691				4,605,431				$ 1,744	1,697,787	(629,008)	(198,346)				3,733,254	88,260
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	182,068
Derivative adjustments		(18,210)	(4,998)	(19,581)
Foreign currency translation adjustments	(177,258)
Ending balance (in shares) at Sep. 28, 2024									159,043,922
Ending balance at Sep. 28, 2024	4,634,294				4,551,410				$ 1,750	1,724,665	(667,346)	(417,885)				3,910,226	82,884
Beginning balance (in shares) at Mar. 30, 2024									159,779,557
Beginning balance at Mar. 30, 2024	4,682,990				4,593,129				$ 1,749	1,712,349	(636,916)	(298,464)				3,814,411	89,861
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	81,365				78,866											78,866	2,499
Distribution of noncontrolling interest earnings	(10,750)																(10,750)
Pension adjustments, net of tax	262				262							262
Derivative adjustments		(2,349)	(3,240)	(18,789)		(2,349)	(3,240)	(18,789)					(2,349)	(3,240)	(18,789)
Foreign currency translation adjustments	(168,038)				(168,092)							(168,092)					54
Issuance of non-vested stock	46				46					46
Stock-based compensation	10,708				10,708					10,708
Treasury stock (in shares)									(814,398)
Treasury stock	(29,629)				(29,629)						(29,629)
Issuance of common stock (in shares)									18,267
Issuance of common stock	37				37				$ 0	37
Ending balance (in shares) at Jun. 29, 2024									158,983,426
Ending balance at Jun. 29, 2024	4,542,613				4,460,949				$ 1,749	1,723,140	(666,545)	(490,672)				3,893,277	81,664
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	19,115				16,949											16,949	2,166
Pension adjustments, net of tax	262				262							262
Derivative adjustments		15,897	(5,835)	6,067		15,897	(5,835)	6,067					15,897	(5,835)	6,067
Foreign currency translation adjustments	55,450				56,396							56,396					(946)
Issuance of non-vested stock	47				47					47
Stock-based compensation	1,146				1,146					1,146
Treasury stock (in shares)									(21,192)
Treasury stock	(801)				(801)						(801)
Issuance of common stock (in shares)									81,688
Issuance of common stock	333				333				$ 1	332
Ending balance (in shares) at Sep. 28, 2024									159,043,922
Ending balance at Sep. 28, 2024	4,634,294				4,551,410				$ 1,750	1,724,665	(667,346)	(417,885)				3,910,226	82,884
Beginning balance (in shares) at Dec. 28, 2024									158,897,470
Beginning balance at Dec. 28, 2024	4,464,292				4,377,810				$ 1,750	1,720,877	(672,710)	(684,241)				4,012,134	86,482
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	(23,814)				(26,160)											(26,160)	2,346
Pension adjustments, net of tax	189				189							189
Derivative adjustments		1,145	(1,235)	19,574		1,145	(1,235)	19,574					1,145	(1,235)	19,574
Foreign currency translation adjustments	119,332				120,818							120,818					(1,486)
Issuance of non-vested stock	21				21					21
Stock-based compensation	(2,952)				(2,952)					(2,952)
Treasury stock (in shares)									(1,365,961)
Treasury stock	(46,037)				(46,037)						(46,037)
Issuance of common stock (in shares)									624,907
Issuance of common stock	5,258				5,258				$ 6	5,252
Ending balance (in shares) at Mar. 29, 2025									158,156,416
Ending balance at Mar. 29, 2025	4,535,773				4,448,431				$ 1,756	1,723,198	(718,747)	(543,750)				3,985,974	87,342
Beginning balance (in shares) at Dec. 28, 2024									158,897,470
Beginning balance at Dec. 28, 2024	4,464,292				4,377,810				$ 1,750	1,720,877	(672,710)	(684,241)				4,012,134	86,482
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	11,506
Derivative adjustments		3,098	(5,328)	36,449
Foreign currency translation adjustments	295,533
Ending balance (in shares) at Sep. 27, 2025									158,186,082
Ending balance at Sep. 27, 2025	4,769,130				4,688,844				$ 1,756	1,732,760	(718,928)	(344,742)				4,017,998	80,286
Beginning balance (in shares) at Mar. 29, 2025									158,156,416
Beginning balance at Mar. 29, 2025	4,535,773				4,448,431				$ 1,756	1,723,198	(718,747)	(543,750)				3,985,974	87,342
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	14,265				12,661											12,661	1,604
Distribution of noncontrolling interest earnings	(5,448)																(5,448)
Pension adjustments, net of tax	4,626				4,626							4,626
Derivative adjustments		(911)	(3,067)	12,034		(911)	(3,067)	12,034					(911)	(3,067)	12,034
Foreign currency translation adjustments	131,081				134,806							134,806					(3,725)
Issuance of non-vested stock	9				9					9
Stock-based compensation	4,574				4,574					4,574
Treasury stock (in shares)									(5,206)
Treasury stock	(173)				(173)						(173)
Issuance of common stock (in shares)									34,695
Issuance of common stock	70				70				$ 0	70
Ending balance (in shares) at Jun. 28, 2025									158,185,905
Ending balance at Jun. 28, 2025	4,692,833				4,613,060				$ 1,756	1,727,851	(718,920)	(396,262)				3,998,635	79,773
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	21,055				19,363											19,363	1,692
Deductions to noncontrolling interests	(6,470)				(3,357)					(3,357)							(3,113)
Noncontrolling Interest, Increase from Sale of Parent Equity Interest	1,563																1,563
Pension adjustments, net of tax	92				92							92
Derivative adjustments		$ 2,864	$ (1,026)	$ 4,841		$ 2,864	$ (1,026)	$ 4,841					$ 2,864	$ (1,026)	$ 4,841
Foreign currency translation adjustments	45,120				44,749							44,749					371
Issuance of non-vested stock	3				3					3
Stock-based compensation	8,263				8,263					8,263
Treasury stock (in shares)									(285)
Treasury stock	(8)				(8)						(8)
Issuance of common stock (in shares)									462
Issuance of common stock	0				0				$ 0	0
Ending balance (in shares) at Sep. 27, 2025									158,186,082
Ending balance at Sep. 27, 2025	$ 4,769,130				$ 4,688,844				$ 1,756	$ 1,732,760	$ (718,928)	$ (344,742)				$ 4,017,998	$ 80,286