Other Comprehensive Income (Schedule of AOCI) (Details) $ in Thousands	6 Months Ended
	Jun. 29, 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	(266,438)
Amounts reclassified from accumulated other comprehensive income/ (loss)	(24,664)
Net current-period other comprehensive income/ (loss)	(291,102)
Noncontrolling interest	1,224
Accumulated Other Comprehensive income/ (loss) June 29, 2024, attributable to Darling, net of tax	(490,672)
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	(232,708)
Amounts reclassified from accumulated other comprehensive income/ (loss)	0
Net current-period other comprehensive income/ (loss)	(232,708)
Noncontrolling interest	1,224
Accumulated Other Comprehensive income/ (loss) June 29, 2024, attributable to Darling, net of tax	(465,610)
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	(33,730)
Amounts reclassified from accumulated other comprehensive income/ (loss)	(25,188)
Net current-period other comprehensive income/ (loss)	(58,918)
Noncontrolling interest	0
Accumulated Other Comprehensive income/ (loss) June 29, 2024, attributable to Darling, net of tax	(11,188)
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	0
Amounts reclassified from accumulated other comprehensive income/ (loss)	524
Net current-period other comprehensive income/ (loss)	524
Noncontrolling interest	0
Accumulated Other Comprehensive income/ (loss) June 29, 2024, attributable to Darling, net of tax	$ (13,874)