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Debt Debt Disclosure (Details) (Unsecured Debt [Member], Darling International Senior Unsecured Notes [Member]) | Mar. 30, 2013
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Unsecured Debt [Member] | Darling International Senior Unsecured Notes [Member] |
Schedule of Debt Redemption Prices [Line Items] |
Debt Instrument, Redemption Price Within Year After December 15 2014 | 104.25%
Debt Instrument, Redemption Price From One to Two Years After December 15 2014 | 102.125%
Debt Instrument, Redemption Price After Three Years After December 15 2014 | 100.00%

X
- Definition Debt Instrument, Redemption Price After Three Years After December 15 2014 + References No definition available. + Details
Name: | dar_DebtInstrumentRedemptionPriceAfterThreeYearsAfterDecember152014
Namespace Prefix: | dar_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Debt Instrument, Redemption Price From One to Two Years After December 15 2014 + References No definition available. + Details
Name: | dar_DebtInstrumentRedemptionPriceFromOneToTwoYearsAfterDecember152014
Namespace Prefix: | dar_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Debt Instrument, Redemption Price Within Year After December 15 2014 + References No definition available. + Details
Name: | dar_DebtInstrumentRedemptionPriceWithinYearAfterDecember152014
Namespace Prefix: | dar_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | dar_ScheduleOfDebtRedemptionPricesLineItems
Namespace Prefix: | dar_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration