Other Comprehensive Income (Reclassification out of AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Net sales	$ 1,455,292	$ 1,757,621	$ 2,875,591	$ 3,548,793
Cost of sales and operating expenses	1,128,421	1,359,702	2,245,087	2,726,675
Income taxes	(774)	(40,712)	(4,681)	(67,686)
Amortization of prior service cost	(6)	0	(12)	0
Amortization of actuarial loss	349	434	698	868
Net income attributable to Darling	78,866	252,383	160,023	438,184
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Net income attributable to Darling	7,719	5,944	24,664	8,320
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Total before tax	10,704	9,268	34,213	13,448
Income taxes	(2,723)	(2,997)	(9,025)	(4,474)
Net income attributable to Darling	7,981	6,271	25,188	8,974
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] | Soybean Meal
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Net sales	0	166	33	504
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] | Foreign Exchange Contract
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Net sales	1,399	7,459	7,395	12,273
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] | Corn Option
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Cost of sales and operating expenses	0	653	0	1,537
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] | Interest Rate Swap
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Foreign currency gain	9,305	990	26,785	(866)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Total before tax	(343)	(434)	(686)	(868)
Income taxes	81	107	162	214
Amortization of prior service cost	6	0	12	0
Amortization of actuarial loss	(349)	(434)	(698)	(868)
Net income attributable to Darling	$ (262)	$ (327)	$ (524)	$ (654)