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Guarantor Financial Information (Narrative) (Details)	Mar. 29, 2014
Guarantor Financial Information [Abstract]
Company's percentage of directly and indirectly owned subsidiaries	100.00%

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- Details

Name:	dar_GuarantorFinancialInformationAbstract
Namespace Prefix:	dar_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

+ Details

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