XML 44 R30.htm IDEA: XBRL DOCUMENT v2.3.0.11

General (Details)	Jul. 02, 2011 facilities
Business Acquisition [Line Items]
Number of Processing and Transfer Facilities	125

X

- Definition

Number of Processing and Transfer Facilities

+ 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.

+ Details

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