XML 66 R34.htm IDEA: XBRL DOCUMENT
v2.4.1.9

General (Details) | Apr. 04, 2015 facilities | Jan. 07, 2014 continent
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Business Acquisition [Line Items] |  |
Number of Processing and Transfer Facilities (over 200) | 200 dar_NumberOfProcessingAndTransferFacilities |
Vion Ingredients [Member] |  |
Business Acquisition [Line Items] |  |
Number of continents in which entity operates |  | 5 dar_ExpectedBusinessCombinationNumberofContinentsinwhichEntityOperates / us-gaap_BusinessAcquisitionAxis = dar_VionIngredientsMember
Best Hides GmbH [Member] | Vion Ingredients [Member] |  |
Business Acquisition [Line Items] |  |
Business acquisition, percentage of interests acquired |  | 60.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired / us-gaap_BusinessAcquisitionAxis = dar_VionIngredientsMember / dei_LegalEntityAxis = dar_BestHidesGmbHMember

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- 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

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- 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

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

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- 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=25497992&loc=d3e1392-128463 + Details
Name: | us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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

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