Acquisitions (Details) $ in Thousands, € in Millions							3 Months Ended			6 Months Ended
	Jan. 31, 2024 USD ($)	Jan. 31, 2024 EUR (€)	Mar. 31, 2023 USD ($) facilities	Mar. 31, 2023 BRL (R$)	Aug. 01, 2022 USD ($) facilities	Aug. 01, 2022 BRL (R$)	Jun. 29, 2024 USD ($)	Mar. 30, 2024 USD ($)	Jul. 01, 2023 USD ($)	Jun. 29, 2024 USD ($)	Jul. 01, 2023 USD ($)	Dec. 30, 2023 USD ($)	Aug. 01, 2022 BRL (R$) facilities
Business Acquisition [Line Items]
Acquisition and integration costs							$ 1,130		$ 1,706	$ 5,184	$ 8,728
Net sales							1,455,292		1,757,621	2,875,591	3,548,793
Net income attributable to Darling							78,866		252,383	160,023	438,184
Goodwill							2,418,274			2,418,274		$ 2,484,502
Goodwill, Purchase Accounting Adjustments										9,147
South America
Business Acquisition [Line Items]
Net sales							132,081		$ 144,786	261,199	$ 249,109
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
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$													1,000,000,000.0
Business Combination, Contingent Consideration, Liability					$ 83,000								R$ 428,200,000
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Future Earnings Growth Period					3 years	3 years
Goodwill					$ 301,937
Less hold-back					$ 21,705
Foreign Currency Exchange Rate					5.16								5.16
Deferred tax asset					$ 2,315
FASA Group | Collection Routes
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
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
Gelnex
Business Acquisition [Line Items]
Business combination, consideration transferred			853,300	R$ 4,300,000,000
Property, plant and equipment			169,205
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
Payments to Acquire Businesses, Gross			$ 1,100,000
Business Combination, Purchase Price Adjustments							14,100
Net sales							68,900			134,800
Net income attributable to Darling							(15,700)			(51,800)
Goodwill			542,572
Goodwill, Purchase Accounting Adjustments								(9,100)
Less hold-back			104,145
Business Acquisition, Goodwill, Expected Tax Deductible Amount			425,000
Business Combination, Price of Acquisition, Expected			$ 1,200,000
Foreign Currency Exchange Rate			5.08
Increase in property, plant and equipment								13,700
Decrease in intangible assets								(9,500)
Increase in deferred tax liabilities								5,100
Increase in other assets and liabilities								$ 100
Payments to Acquire Businesses, Partial Payment			$ 243,500
Deferred tax asset			$ 9,067				$ 8,100			$ 8,100
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
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles			$ 8,500
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			$ 331,000
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]
Property, plant and equipment	$ 21,200
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 34,900
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	17 years	17 years
Payments to Acquire Businesses, Gross	$ 114,300	€ 105.6
Goodwill	62,900
Less hold-back	$ 7,600	€ 7.0
Foreign Currency Exchange Rate	1.082198
Business Combination, Recognized Indefinable Assets Acquired and Liabilities Assumed, Other Net Assets	$ 2,900