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Other Comprehensive Income (Schedule of AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2017	Apr. 02, 2016
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated Other Comprehensive Income (loss) December 31, 2016, attributable to Darling, net of tax	$ (340,006)
Other comprehensive gain before reclassifications	15,302
Amounts reclassified from accumulated other comprehensive income/(loss)	34
Net current-period other comprehensive income	15,336	$ 57,551
Accumulated Other Comprehensive Income (loss) April 1, 2017, attributable to Darling, net of tax	(324,348)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest	(322)
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated Other Comprehensive Income (loss) December 31, 2016, attributable to Darling, net of tax	(308,910)
Other comprehensive gain before reclassifications	15,679
Amounts reclassified from accumulated other comprehensive income/(loss)	0
Net current-period other comprehensive income	15,679
Accumulated Other Comprehensive Income (loss) April 1, 2017, attributable to Darling, net of tax	(292,909)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest	(322)
Derivative Instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated Other Comprehensive Income (loss) December 31, 2016, attributable to Darling, net of tax	2,468
Other comprehensive gain before reclassifications	(377)
Amounts reclassified from accumulated other comprehensive income/(loss)	(725)
Net current-period other comprehensive income	(1,102)
Accumulated Other Comprehensive Income (loss) April 1, 2017, attributable to Darling, net of tax	1,366
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest	0
Defined Benefit Pension Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated Other Comprehensive Income (loss) December 31, 2016, attributable to Darling, net of tax	(33,564)
Other comprehensive gain before reclassifications	0
Amounts reclassified from accumulated other comprehensive income/(loss)	759
Net current-period other comprehensive income	759
Accumulated Other Comprehensive Income (loss) April 1, 2017, attributable to Darling, net of tax	(32,805)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest	$ 0

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Accumulated Other Comprehensive Income (Loss) [Roll Forward]

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No definition available.

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+ References

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

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

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