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Guarantor Financial Information Guarantor Financial Information Condensed Consolidating Statements of Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Oct. 01, 2016	Jul. 02, 2016	Apr. 02, 2016	Jan. 02, 2016	Oct. 03, 2015	Jul. 04, 2015	Apr. 04, 2015	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Net income	$ 41,680	$ 28,890	$ 33,991	$ 2,663	$ 85,875	$ (7,357)	$ 4,937	$ 1,824	$ 107,224	$ 85,279	$ 68,311
Foreign currency translation adjustments									(5,593)	(162,436)	(119,684)
Pension adjustments									(1,016)	4,202	(20,381)
Total other comprehensive income, net of tax									(5,984)	(156,467)	(141,437)
Total comprehensive income/(loss)									101,240	(71,188)	(73,126)
Comprehensive income attributable to noncontrolling interests									3,015	9,139	10,296
Comprehensive income/(loss) attributable to Darling									98,225	(80,327)	(83,422)
Natural Gas Swap [Member]
Total natural gas derivatives											(113)
Corn Option [Member]
Total natural gas derivatives									625	1,767	(1,259)
Issuer [Member]
Net income									107,224	85,279	68,311
Foreign currency translation adjustments									0	0	0
Pension adjustments									1,766	83	(11,844)
Total other comprehensive income, net of tax									2,391	1,850	(13,216)
Total comprehensive income/(loss)									109,615	87,129	55,095
Comprehensive income attributable to noncontrolling interests									0	0	0
Comprehensive income/(loss) attributable to Darling									109,615	87,129	55,095
Issuer [Member] | Natural Gas Swap [Member]
Total natural gas derivatives											(113)
Issuer [Member] | Corn Option [Member]
Total natural gas derivatives									625	1,767	(1,259)
Guarantors [Member]
Net income									102,699	101,828	155,250
Foreign currency translation adjustments									0	0	0
Pension adjustments									0	109	(34)
Total other comprehensive income, net of tax									0	109	(34)
Total comprehensive income/(loss)									102,699	101,937	155,216
Comprehensive income attributable to noncontrolling interests									0	0	0
Comprehensive income/(loss) attributable to Darling									102,699	101,937	155,216
Guarantors [Member] | Natural Gas Swap [Member]
Total natural gas derivatives											0
Guarantors [Member] | Corn Option [Member]
Total natural gas derivatives									0	0	0
Non-guarantors [Member]
Net income									120,648	96,543	68,540
Foreign currency translation adjustments									(5,593)	(162,436)	(119,684)
Pension adjustments									(2,782)	4,010	(8,503)
Total other comprehensive income, net of tax									(8,375)	(158,426)	(128,187)
Total comprehensive income/(loss)									112,273	(61,883)	(59,647)
Comprehensive income attributable to noncontrolling interests									3,015	9,139	10,296
Comprehensive income/(loss) attributable to Darling									109,258	(71,022)	(69,943)
Non-guarantors [Member] | Natural Gas Swap [Member]
Total natural gas derivatives											0
Non-guarantors [Member] | Corn Option [Member]
Total natural gas derivatives									0	0	0
Eliminations [Member]
Net income									(223,347)	(198,371)	(223,790)
Foreign currency translation adjustments									0	0	0
Pension adjustments									0	0	0
Total other comprehensive income, net of tax									0	0	0
Total comprehensive income/(loss)									(223,347)	(198,371)	(223,790)
Comprehensive income attributable to noncontrolling interests									0	0	0
Comprehensive income/(loss) attributable to Darling									(223,347)	(198,371)	(223,790)
Eliminations [Member] | Natural Gas Swap [Member]
Total natural gas derivatives											0
Eliminations [Member] | Corn Option [Member]
Total natural gas derivatives									$ 0	$ 0	$ 0

X

- Definition

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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