XML 86 R73.htm IDEA: XBRL DOCUMENT v3.8.0.1

Revenue (Details)	Mar. 31, 2018 source
Revenue from Contract with Customer [Abstract]
Number of revenue sources	2

X

- Definition

Number of Revenue Sources

+ References

No definition available.

+ Details

Name:	dar_NumberofRevenueSources
Namespace Prefix:	dar_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	us-gaap_RevenueFromContractWithCustomerAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration