XML 84 R71.htm IDEA: XBRL DOCUMENT v3.8.0.1

Business Segments (Narrative) (Details)	Mar. 31, 2018 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