Other Comprehensive Income (Schedule of AOCI) (Details) $ in Thousands	6 Months Ended
Jul. 02, 2022 USD ($)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated Other Comprehensive loss January 1, 2022, attributable to Darling, net of tax	$ (321,690)
Other comprehensive loss before reclassifications	(82,644)
Amounts reclassified from accumulated other comprehensive loss	4,148
Net current-period other comprehensive income/(loss)	(78,496)
Noncontrolling interest	721
Accumulated Other Comprehensive loss July 2, 2022, attributable to Darling, net of tax	(400,907)
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated Other Comprehensive loss January 1, 2022, attributable to Darling, net of tax	(289,586)
Other comprehensive loss before reclassifications	(90,473)
Amounts reclassified from accumulated other comprehensive loss	0
Net current-period other comprehensive income/(loss)	(90,473)
Noncontrolling interest	721
Accumulated Other Comprehensive loss July 2, 2022, attributable to Darling, net of tax	(380,780)
Derivative Instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated Other Comprehensive loss January 1, 2022, attributable to Darling, net of tax	(6,456)
Other comprehensive loss before reclassifications	7,829
Amounts reclassified from accumulated other comprehensive loss	3,291
Net current-period other comprehensive income/(loss)	11,120
Noncontrolling interest	0
Accumulated Other Comprehensive loss July 2, 2022, attributable to Darling, net of tax	4,664
Defined Benefit Pension Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated Other Comprehensive loss January 1, 2022, attributable to Darling, net of tax	(25,648)
Other comprehensive loss before reclassifications	0
Amounts reclassified from accumulated other comprehensive loss	857
Net current-period other comprehensive income/(loss)	857
Noncontrolling interest	0
Accumulated Other Comprehensive loss July 2, 2022, attributable to Darling, net of tax	$ (24,791)

Accumulated Other Comprehensive Income (Loss) [Roll Forward]

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Other Comprehensive Income (Loss), Net Of Reclassification, Net Of Tax

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Amount after tax, before reclassification adjustments of other comprehensive income (loss).

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