Acquisitions (Details) € in Thousands, $ in Thousands							1 Months Ended	3 Months Ended			9 Months Ended
	Mar. 31, 2023 USD ($) facilities	Mar. 31, 2023 BRL (R$)	Nov. 02, 2022 EUR (€)	Aug. 01, 2022 USD ($) facilities	Aug. 01, 2022 BRL (R$)	May 02, 2022 USD ($) facilities	Feb. 28, 2022 USD ($)	Sep. 30, 2023 USD ($)	Jul. 01, 2023 USD ($)	Oct. 01, 2022 USD ($)	Sep. 30, 2023 USD ($)	Oct. 01, 2022 USD ($)	Jul. 01, 2023 BRL (R$)	Dec. 31, 2022 USD ($)	Aug. 01, 2022 BRL (R$) facilities	Feb. 25, 2022 USD ($)
Business Acquisition [Line Items]
Acquisition and integration costs								$ 3,430		$ 4,503	$ 12,158	$ 13,634
Net sales								1,625,204		1,747,599	5,173,997	4,764,121
Net income attributable to Darling								125,026		191,081	563,210	581,130
Goodwill								2,447,376			2,447,376			$ 1,970,377
Goodwill, Purchase Accounting Adjustments											83,071
South America
Business Acquisition [Line Items]
Net sales								127,440		$ 59,468	376,549	$ 80,832
Senior Secured Facilities | Term A-1 Facility
Business Acquisition [Line Items]
Line of credit outstanding								400,000			400,000
Senior Secured Facilities | Term A-2 Facility
Business Acquisition [Line Items]
Line of credit outstanding								500,000			500,000
Senior Secured Facilities | Revolving Credit Facility
Business Acquisition [Line Items]
Line of credit outstanding								515,000			515,000
Senior Secured Facilities | Term A-4 Facility
Business Acquisition [Line Items]
Line of credit outstanding	$ 500,000
Senior Secured Facilities | Term A-3 Facility
Business Acquisition [Line Items]
Line of credit outstanding	300,000
FASA Group
Business Acquisition [Line Items]
Property, plant and equipment				$ 224,384
Other noncurrent liabilities				$ (503)
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life				11 years 4 months 24 days	11 years 4 months 24 days
Payments to Acquire Businesses, Gross				$ 562,600	R$ 2,900,000,000
Business Combination, Number of Facilities Acquired | facilities				14											14
Business Combination, Purchase Price Adjustments									$ 7,100
Net sales								75,800			259,600
Net income attributable to Darling								(3,500)			(1,700)
Business Combination, Number of Facilities Acquired Under Construction | facilities				2											2
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, Low | R$															R$ 0
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High | R$															1,000,000,000
Business Combination, Contingent Consideration, Liability				$ 168,100					83,000				R$ 428,200,000		R$ 867,500,000
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Future Earnings Growth Period				3 years	3 years
Goodwill				$ 301,937
Goodwill, Purchase Accounting Adjustments									21,500
Less hold-back				$ 21,705
Foreign Currency Exchange Rate				5.16											5.16
Increase in property, plant and equipment									81,500
Decrease in intangible assets									41,700
Increase in deferred tax liabilities									16,000
Increase in other assets and liabilities									2,300
FASA Group | Revision of Prior Period, Error Correction, Adjustment
Business Acquisition [Line Items]
Business Combination, Contingent Consideration, Liability				$ 85,100
Goodwill, Period Increase (Decrease)									85,144
FASA Group | Collection Routes [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles				$ 108,600
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life				12 years	12 years
FASA Group | Trade Names [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles				$ 10,900
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life				5 years	5 years
Valley Proteins
Business Acquisition [Line Items]
Property, plant and equipment						$ 409,405
Other noncurrent liabilities						$ (19,436)
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life						15 years
Payments to Acquire Businesses, Gross						$ 1,177,000
Business Combination, Number of Facilities Acquired | facilities						18
Business Combination, Purchase Price Adjustments								6,000
Net sales								197,100			623,400
Net income attributable to Darling								(11,300)			(7,700)
Goodwill						$ 358,298
Valley Proteins | Collection Routes [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles						$ 292,100
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life						15 years
Valley Proteins | Permits [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles						$ 97,100
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life						15 years
Group Op de Beeck
Business Acquisition [Line Items]
Business Acquisition, Price of Acquisition																$ 91,700
Business combination, consideration transferred							$ 71,300		75,500
Property, plant and equipment																28,100
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles																27,200
Other noncurrent liabilities																(9,400)
Business Combination, Purchase Price Adjustments									$ 4,200
Goodwill																$ 29,600
Gelnex
Business Acquisition [Line Items]
Business combination, consideration transferred	855,100	R$ 4,300,000,000
Property, plant and equipment	143,509
Other noncurrent liabilities	$ (19)
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	11 years 3 months 18 days	11 years 3 months 18 days
Acquisition and integration costs								600			6,500
Payments to Acquire Businesses, Gross	$ 1,100,000
Business Combination, Purchase Price Adjustments								14,100
Net sales								88,800			180,000
Net income attributable to Darling								1,100			$ (18,000)
Goodwill	564,467
Goodwill, Purchase Accounting Adjustments								(75,800)
Less hold-back	104,145
Business Acquisition, Goodwill, Expected Tax Deductible Amount	446,500
Business Combination, Price of Acquisition, Expected	$ 1,200,000
Foreign Currency Exchange Rate	5.08
Increase in property, plant and equipment								15,700
Decrease in intangible assets								(66,500)
Increase in deferred tax liabilities								6,200
Increase in other assets and liabilities								$ 200
Payments to Acquire Businesses, Partial Payment	$ 243,500
Gelnex | South America
Business Acquisition [Line Items]
Business Combination, Number of Facilities Acquired | facilities	5
Gelnex | UNITED STATES
Business Acquisition [Line Items]
Business Combination, Number of Facilities Acquired | facilities	1
Gelnex | Trade Names [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 8,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	5 years	5 years
Gelnex | Customer Relationships
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 342,500
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	11 years 4 months 24 days	11 years 4 months 24 days
Miropasz
Business Acquisition [Line Items]
Business Combination, Price of Acquisition, Expected | €			€ 110,000