Other Comprehensive Income (Schedule of AOCI) (Details) $ in Thousands	3 Months Ended
	Mar. 30, 2024 USD ($)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated Other Comprehensive income/ (loss) December 30, 2023, attributable to Darling, net of tax	$ (198,346)
Other comprehensive income/ (loss) before reclassifications	(81,738)
Amounts reclassified from accumulated other comprehensive income/ (loss)	(17,210)
Net current-period other comprehensive income/ (loss)	(98,948)
Noncontrolling interest	1,170
Accumulated Other Comprehensive income/ (loss) March 30, 2024, attributable to Darling, net of tax	(298,464)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated Other Comprehensive income/ (loss) December 30, 2023, attributable to Darling, net of tax	(231,678)
Other comprehensive income/ (loss) before reclassifications	(64,670)
Amounts reclassified from accumulated other comprehensive income/ (loss)	0
Net current-period other comprehensive income/ (loss)	(64,670)
Noncontrolling interest	1,170
Accumulated Other Comprehensive income/ (loss) March 30, 2024, attributable to Darling, net of tax	(297,518)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated Other Comprehensive income/ (loss) December 30, 2023, attributable to Darling, net of tax	47,730
Other comprehensive income/ (loss) before reclassifications	(17,333)
Amounts reclassified from accumulated other comprehensive income/ (loss)	(17,207)
Net current-period other comprehensive income/ (loss)	(34,540)
Noncontrolling interest	0
Accumulated Other Comprehensive income/ (loss) March 30, 2024, attributable to Darling, net of tax	13,190
Defined Benefit Pension Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated Other Comprehensive income/ (loss) December 30, 2023, attributable to Darling, net of tax	(14,398)
Other comprehensive income/ (loss) before reclassifications	265
Amounts reclassified from accumulated other comprehensive income/ (loss)	(3)
Net current-period other comprehensive income/ (loss)	262
Noncontrolling interest	0
Accumulated Other Comprehensive income/ (loss) March 30, 2024, attributable to Darling, net of tax	$ (14,136)