XML 74 R62.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Business Segments (Narrative) (Details) | Apr. 01, 2017 segment
--- | ---
Segment Reporting [Abstract] |
Number of Business Segments | 3

X
- Definition Number of Business Segments + References No definition available. + Details
Name: | dar_NumberOfBusinessSegments
Namespace Prefix: | dar_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_SegmentReportingAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration