Debt Debt Disclosure (Details) (Unsecured Debt [Member], Darling International Senior Unsecured Notes [Member])	Mar. 30, 2013
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%