Other Comprehensive Income (Schedule of AOCI) (Details) $ in Thousands	9 Months Ended
	Sep. 28, 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 loss before reclassifications	(208,698)
Amounts reclassified from accumulated other comprehensive income/ (loss)	(10,563)
Net current-period other comprehensive income/ (loss)	(219,261)
Noncontrolling interest	278
Accumulated Other Comprehensive income/ (loss) September 28, 2024, attributable to Darling, net of tax	(417,885)
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 loss before reclassifications	(177,258)
Amounts reclassified from accumulated other comprehensive income/ (loss)	0
Net current-period other comprehensive income/ (loss)	(177,258)
Noncontrolling interest	278
Accumulated Other Comprehensive income/ (loss) September 28, 2024, attributable to Darling, net of tax	(409,214)
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 loss before reclassifications	(31,440)
Amounts reclassified from accumulated other comprehensive income/ (loss)	(11,349)
Net current-period other comprehensive income/ (loss)	(42,789)
Noncontrolling interest	0
Accumulated Other Comprehensive income/ (loss) September 28, 2024, attributable to Darling, net of tax	4,941
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 loss before reclassifications	0
Amounts reclassified from accumulated other comprehensive income/ (loss)	786
Net current-period other comprehensive income/ (loss)	786
Noncontrolling interest	0
Accumulated Other Comprehensive income/ (loss) September 28, 2024, attributable to Darling, net of tax	$ (13,612)