Other Comprehensive Income (Schedule of AOCI) (Details) $ in Thousands	6 Months Ended
	Jul. 01, 2023 USD ($)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated Other Comprehensive loss December 31, 2022, attributable to Darling, net of tax	$ (383,874)
Other comprehensive loss before reclassifications	176,462
Amounts reclassified from accumulated other comprehensive loss	(8,320)
Net current-period other comprehensive income	168,142
Noncontrolling interest	(3,171)
Accumulated Other Comprehensive loss July 1, 2023, attributable to Darling, net of tax	(212,561)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated Other Comprehensive loss December 31, 2022, attributable to Darling, net of tax	(374,368)
Other comprehensive loss before reclassifications	138,809
Amounts reclassified from accumulated other comprehensive loss	0
Net current-period other comprehensive income	138,809
Noncontrolling interest	(3,171)
Accumulated Other Comprehensive loss July 1, 2023, attributable to Darling, net of tax	(232,388)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated Other Comprehensive loss December 31, 2022, attributable to Darling, net of tax	7,176
Other comprehensive loss before reclassifications	37,653
Amounts reclassified from accumulated other comprehensive loss	(8,974)
Net current-period other comprehensive income	28,679
Noncontrolling interest	0
Accumulated Other Comprehensive loss July 1, 2023, attributable to Darling, net of tax	35,855
Defined Benefit Pension Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated Other Comprehensive loss December 31, 2022, attributable to Darling, net of tax	(16,682)
Other comprehensive loss before reclassifications	0
Amounts reclassified from accumulated other comprehensive loss	654
Net current-period other comprehensive income	654
Noncontrolling interest	0
Accumulated Other Comprehensive loss July 1, 2023, attributable to Darling, net of tax	$ (16,028)