XML 44 R35.htm IDEA: XBRL DOCUMENT v3.2.0.727

General (Details)	Jul. 04, 2015 Facility	Jan. 07, 2014 continent
Business Acquisition [Line Items]
Number of Processing and Transfer Facilities (over 200) | Facility	200
Vion Ingredients [Member]
Business Acquisition [Line Items]
Number of continents in which entity operates		5
Best Hides GmbH [Member] | Vion Ingredients [Member]
Business Acquisition [Line Items]
Business acquisition, percentage of interests acquired		60.00%

X

- Definition

Expected Business Combination, Number of Continents in which Entity Operates

+ References

No definition available.

+ Details

Name:	dar_ExpectedBusinessCombinationNumberofContinentsinwhichEntityOperates
Namespace Prefix:	dar_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of Processing and Transfer Facilities

+ References

No definition available.

+ Details

Name:	dar_NumberOfProcessingAndTransferFacilities
Namespace Prefix:	dar_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_BusinessAcquisitionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 805



-SubTopic 10



-Section 50



-Paragraph 2



-Subparagraph (c)



-URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1392-128463

+ Details

Name:	us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_BusinessAcquisitionAxis=dar_VionIngredientsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	dei_LegalEntityAxis=dar_BestHidesGmbHMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: