XML 36 R71.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Debt Narrative (Details) |  |  |  | 12 Months Ended |  |  |  | 12 Months Ended |  | 12 Months Ended |  | 12 Months Ended |  |  |  |  |  | 12 Months Ended |  | 12 Months Ended |  | 12 Months Ended |  | 12 Months Ended |  | 12 Months Ended |  | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 03, 2015 USD ($) | Jan. 03, 2015 CAD | Jan. 03, 2015 EUR (€) | Mar. 29, 2014 USD ($) | Dec. 28, 2013 USD ($) | Jan. 03, 2015 Senior Secured Facilities [Member] | Jan. 02, 2014 Senior Notes [Member] USD ($) | Feb. 07, 2014 Senior Notes [Member] Senior Notes 8.5% due 2018 [Member] USD ($) | Dec. 17, 2010 Senior Notes [Member] Senior Notes 8.5% due 2018 [Member] USD ($) | Jan. 03, 2015 Senior Notes [Member] Senior Notes 5.375% Due 2022 [Member] | Jan. 02, 2014 Senior Notes [Member] Senior Notes 5.375% Due 2022 [Member] USD ($) | Jan. 03, 2015 Senior Notes [Member] Senior Notes 5.375% Due 2022 [Member] Minimum [Member] | Jan. 03, 2015 Senior Notes [Member] Senior Notes 5.375% Due 2022 [Member] Maximum [Member] | Jan. 03, 2015 Secured Debt [Member] Senior Secured Facilities [Member] USD ($) | Dec. 28, 2013 Bridge Loan [Member] USD ($) | Jan. 03, 2015 Revolving Credit Facility [Member] Senior Secured Facilities [Member] USD ($) | Jan. 03, 2015 Revolving Credit Facility [Member] Senior Secured Facilities [Member] Canada, Dollars CAD | Jan. 03, 2015 Revolving Credit Facility [Member] Senior Secured Facilities [Member] London Interbank Offered Rate (LIBOR) [Member] USD ($) | Jan. 03, 2015 Revolving Credit Facility [Member] Senior Secured Facilities [Member] Canadian Dealer Offered Rate (CDOR) [Member] Canada, Dollars USD ($) | Jan. 03, 2015 Revolving Credit Facility [Member] Senior Secured Facilities [Member] Canadian Dealer Offered Rate (CDOR) [Member] Canada, Dollars CAD | Dec. 28, 2013 Revolving Credit Facility [Member] Senior Secured Facilities [Member] Canadian Dealer Offered Rate (CDOR) [Member] Canada, Dollars USD ($) | Jan. 03, 2015 Revolving Credit Facility [Member] Secured Debt [Member] Senior Secured Facilities [Member] USD ($) | Jan. 03, 2015 Term Loan A Facility [Member] Senior Secured Facilities [Member] USD ($) | Jan. 03, 2015 Term Loan A Facility [Member] Senior Secured Facilities [Member] Canada, Dollars USD ($) | Jan. 03, 2015 Term Loan A Facility [Member] Senior Secured Facilities [Member] Canada, Dollars CAD | Dec. 28, 2013 Term Loan A Facility [Member] Senior Secured Facilities [Member] Canada, Dollars USD ($) | Jan. 03, 2015 Term Loan A Facility [Member] Senior Secured Facilities [Member] United States of America, Dollars USD ($) | Jan. 03, 2015 Term Loan A Facility [Member] Senior Secured Facilities [Member] Quarters One Thru Eight [Member] | Jan. 03, 2015 Term Loan A Facility [Member] Senior Secured Facilities [Member] Quarters Nine Thru Sixteen [Member] | Jan. 03, 2015 Term Loan A Facility [Member] Senior Secured Facilities [Member] Quarter Seventeen and Ongoing [Member] | Jan. 03, 2015 Term Loan A Facility [Member] Senior Secured Facilities [Member] London Interbank Offered Rate (LIBOR) [Member] | Jan. 03, 2015 Term Loan A Facility [Member] Senior Secured Facilities [Member] Canadian Dealer Offered Rate (CDOR) [Member] Canada, Dollars | Jan. 03, 2015 Term Loan A Facility [Member] Secured Debt [Member] Senior Secured Facilities [Member] London Interbank Offered Rate (LIBOR) [Member] | Jan. 03, 2015 Term Loan A Facility [Member] Secured Debt [Member] Senior Secured Facilities [Member] Canadian Prime Rate [Member] | Jan. 03, 2015 Letter of Credit [Member] Senior Secured Facilities [Member] USD ($) | Jan. 03, 2015 Secured Debt [Member] Senior Secured Facilities [Member] London Interbank Offered Rate (LIBOR) [Member] | Jan. 03, 2015 Secured Debt [Member] Senior Secured Facilities [Member] Canadian Dealer Offered Rate (CDOR) [Member] Canada, Dollars | Jan. 03, 2015 Swingline Sub-Facility [Member] Senior Secured Facilities [Member] USD ($) | Jan. 03, 2015 Term Loan B Facility [Member] Senior Secured Facilities [Member] USD ($) | Jan. 03, 2015 Term Loan B Facility [Member] Senior Secured Facilities [Member] Euro Member Countries, Euro USD ($) | Jan. 03, 2015 Term Loan B Facility [Member] Senior Secured Facilities [Member] Euro Member Countries, Euro EUR (€) | Jan. 03, 2015 Term Loan B Facility [Member] Senior Secured Facilities [Member] United States of America, Dollars USD ($) | Jan. 03, 2015 Term Loan B Facility [Member] Senior Secured Facilities [Member] London Interbank Offered Rate (LIBOR) [Member] | Jan. 03, 2015 Term Loan B Facility [Member] Senior Secured Facilities [Member] London Interbank Offered Rate (LIBOR) [Member] Euro Member Countries, Euro | Jan. 03, 2015 Term Loan B Facility [Member] Secured Debt [Member] Senior Secured Facilities [Member] London Interbank Offered Rate (LIBOR) [Member] | Jan. 03, 2015 Term Loan B Facility [Member] Secured Debt [Member] Senior Secured Facilities [Member] London Interbank Offered Rate (LIBOR) [Member] United States of America, Dollars | Jan. 03, 2015 Term Loan B Facility [Member] Secured Debt [Member] Senior Secured Facilities [Member] Euro Interbank Offered Rate [Member] Euro Member Countries, Euro | Jan. 03, 2015 Term Loan B Facility [Member] Secured Debt [Member] Senior Secured Facilities [Member] Base Rate [Member] United States of America, Dollars | Jan. 03, 2015 Foreign Line of Credit [Member] Senior Secured Facilities [Member] USD ($) | Jan. 03, 2015 Prior to January 15, 2017 [Member] Senior Notes [Member] Senior Notes 5.375% Due 2022 [Member] | Jan. 03, 2015 Prior to January 15, 2017 with Additional Restrictions [Member] Senior Notes [Member] Senior Notes 5.375% Due 2022 [Member] | Jan. 03, 2015 North America Term Loan B Facility [Member] Secured Debt [Member] Senior Secured Facilities [Member] USD ($) | Jan. 03, 2015 Europe Term Loan B Facility [Member] Secured Debt [Member] Senior Secured Facilities [Member] EUR (€)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Default Event Percent of Principal Held in Order to Declare Notes Due and Payable Immediately |  |  |  |  |  |  |  |  |  |  | 25.00%dar_DefaultEventPercentOfPrincipalHeldInOrderToDeclareNotesDueAndPayableImmediately / us-gaap_DebtInstrumentAxis = dar_SeniorNotes5.375Due2022Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum availability |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,650,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SecuredDebtMember | $ 1,300,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_LongtermDebtTypeAxis = us-gaap_BridgeLoanMember | $ 1,000,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 250,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_CreditFacilityAxis = us-gaap_LetterOfCreditMember / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember |  |  | $ 50,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_CreditFacilityAxis = dar_SwinglineSubFacilityMember / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Term |  |  |  |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Commitment Fee Amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 13,000,000 us-gaap_LineOfCreditFacilityCommitmentFeeAmount / us-gaap_LongtermDebtTypeAxis = us-gaap_BridgeLoanMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Face amount of debt insturment |  |  |  |  |  |  | 500,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  | 250,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = dar_SeniorNotes8.5due2018Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  | 500,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = dar_SeniorNotes5.375Due2022Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |  |  |  |  |  |  | 350,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_CreditFacilityAxis = dar_TermLoanAFacilityMember / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,300,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_CreditFacilityAxis = dar_TermLoanBFacilityMember / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Periodic Payment, Percent of Principal |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.25%dar_DebtInstrumentPeriodicPaymentPercentofPrincipal / us-gaap_CreditFacilityAxis = dar_TermLoanAFacilityMember / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember / dar_DebtInstrumentQuarterlyPaymentFrequencyAxis = dar_QuartersOneThruEightMember | 1.875%dar_DebtInstrumentPeriodicPaymentPercentofPrincipal / us-gaap_CreditFacilityAxis = dar_TermLoanAFacilityMember / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember / dar_DebtInstrumentQuarterlyPaymentFrequencyAxis = dar_QuartersNineThruSixteenMember | 3.75%dar_DebtInstrumentPeriodicPaymentPercentofPrincipal / us-gaap_CreditFacilityAxis = dar_TermLoanAFacilityMember / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember / dar_DebtInstrumentQuarterlyPaymentFrequencyAxis = dar_QuarterSeventeenandOngoingMember |  |  |  |  |  |  |  |  | 0.25%dar_DebtInstrumentPeriodicPaymentPercentofPrincipal / us-gaap_CreditFacilityAxis = dar_TermLoanBFacilityMember / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding borrowings and letter of credit issued |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 43,000,000 us-gaap_LineOfCredit / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_CurrencyAxis = currency_CAD / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember | 65,000,000 us-gaap_LineOfCredit / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember | 36,900,000 us-gaap_LineOfCredit / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_CurrencyAxis = currency_CAD / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember / us-gaap_VariableRateAxis = dar_CanadianDealerOfferedRateCDORMember | 43,000,000 us-gaap_LineOfCredit / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_CurrencyAxis = currency_CAD / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember / us-gaap_VariableRateAxis = dar_CanadianDealerOfferedRateCDORMember | 46,700,000 us-gaap_LineOfCredit / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_CurrencyAxis = currency_CAD / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember / us-gaap_VariableRateAxis = dar_CanadianDealerOfferedRateCDORMember |  | 350,000,000 us-gaap_LineOfCredit / us-gaap_CreditFacilityAxis = dar_TermLoanAFacilityMember / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember | 122,200,000 us-gaap_LineOfCredit / us-gaap_CreditFacilityAxis = dar_TermLoanAFacilityMember / us-gaap_CurrencyAxis = currency_CAD / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember | 142,500,000 us-gaap_LineOfCredit / us-gaap_CreditFacilityAxis = dar_TermLoanAFacilityMember / us-gaap_CurrencyAxis = currency_CAD / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember | 140,000,000 us-gaap_LineOfCredit / us-gaap_CreditFacilityAxis = dar_TermLoanAFacilityMember / us-gaap_CurrencyAxis = currency_CAD / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember | 190,000,000 us-gaap_LineOfCredit / us-gaap_CreditFacilityAxis = dar_TermLoanAFacilityMember / us-gaap_CurrencyAxis = currency_USD / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember |  |  |  |  |  |  |  | 32,200,000 us-gaap_LineOfCredit / us-gaap_CreditFacilityAxis = us-gaap_LetterOfCreditMember / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember |  |  |  | 1,300,000,000 us-gaap_LineOfCredit / us-gaap_CreditFacilityAxis = dar_TermLoanBFacilityMember / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember | 610,200,000 us-gaap_LineOfCredit / us-gaap_CreditFacilityAxis = dar_TermLoanBFacilityMember / us-gaap_CurrencyAxis = currency_EUR / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember | 506,200,000 us-gaap_LineOfCredit / us-gaap_CreditFacilityAxis = dar_TermLoanBFacilityMember / us-gaap_CurrencyAxis = currency_EUR / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember | 595,500,000 us-gaap_LineOfCredit / us-gaap_CreditFacilityAxis = dar_TermLoanBFacilityMember / us-gaap_CurrencyAxis = currency_USD / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember |  |  |  |  |  |  | 11,200,000 us-gaap_LineOfCredit / us-gaap_CreditFacilityAxis = us-gaap_ForeignLineOfCreditMember / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember |  |  | 600,000,000 us-gaap_LineOfCredit / us-gaap_CreditFacilityAxis = dar_TermLoanBFacilityMember / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SecuredDebtMember / us-gaap_StatementGeographicalAxis = us-gaap_NorthAmericaMember | 700,000,000 us-gaap_LineOfCredit / us-gaap_CreditFacilityAxis = dar_TermLoanBFacilityMember / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SecuredDebtMember / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember
Deferred Finance Costs, Net | 39,600,000 us-gaap_DeferredFinanceCostsNet |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Lease Obligations, Current |  | 2,500,000 us-gaap_CapitalLeaseObligationsCurrent | 300,000 us-gaap_CapitalLeaseObligationsCurrent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Lease Obligations, Noncurrent |  | 4,900,000 us-gaap_CapitalLeaseObligationsNoncurrent | 900,000 us-gaap_CapitalLeaseObligationsNoncurrent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_CreditFacilityAxis = dar_TermLoanAFacilityMember / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SecuredDebtMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember | 1.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_CreditFacilityAxis = dar_TermLoanAFacilityMember / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SecuredDebtMember / us-gaap_VariableRateAxis = dar_CanadianPrimeRateMember |  | 2.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_CreditFacilityAxis = us-gaap_SecuredDebtMember / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember | 2.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_CreditFacilityAxis = us-gaap_SecuredDebtMember / us-gaap_CurrencyAxis = currency_CAD / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember / us-gaap_VariableRateAxis = dar_CanadianDealerOfferedRateCDORMember |  |  |  |  |  |  | 2.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_CreditFacilityAxis = dar_TermLoanBFacilityMember / us-gaap_CurrencyAxis = currency_EUR / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember | 0.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_CreditFacilityAxis = dar_TermLoanBFacilityMember / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SecuredDebtMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember | 2.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_CreditFacilityAxis = dar_TermLoanBFacilityMember / us-gaap_CurrencyAxis = currency_USD / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SecuredDebtMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember | 2.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_CreditFacilityAxis = dar_TermLoanBFacilityMember / us-gaap_CurrencyAxis = currency_EUR / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SecuredDebtMember / us-gaap_VariableRateAxis = dar_EuroInterbankOfferedRateMember | 1.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_CreditFacilityAxis = dar_TermLoanBFacilityMember / us-gaap_CurrencyAxis = currency_USD / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SecuredDebtMember / us-gaap_VariableRateAxis = us-gaap_BaseRateMember |  |  |  |  |
Line of Credit Facility, Interest Rate at Period End |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.6875%us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd / us-gaap_CreditFacilityAxis = dar_TermLoanAFacilityMember / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember | 3.896%us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd / us-gaap_CreditFacilityAxis = dar_TermLoanAFacilityMember / us-gaap_CurrencyAxis = currency_CAD / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember / us-gaap_VariableRateAxis = dar_CanadianDealerOfferedRateCDORMember |  |  |  |  |  |  |  |  |  |  | 3.25%us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd / us-gaap_CreditFacilityAxis = dar_TermLoanBFacilityMember / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember | 3.50%us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd / us-gaap_CreditFacilityAxis = dar_TermLoanBFacilityMember / us-gaap_CurrencyAxis = currency_EUR / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |  |  |  |  |  |  |  |  |
Availability | 865,939,000 us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity |  |  |  | 680,662,000 us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity |  |  |  |  |  |  |  |  |  |  | 865,900,000 us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember |  |  |  |  |  | 350,000,000 us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_DebtInstrumentAxis = dar_SeniorSecuredFacilitiesMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SecuredDebtMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Annual interest rate |  |  |  |  |  |  |  |  | 8.50%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = dar_SeniorNotes8.5due2018Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  | 5.375%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = dar_SeniorNotes5.375Due2022Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Redemption, Principal Amount Redeemed |  |  |  |  |  |  |  | 280,400,000 dar_DebtInstrumentRedemptionPrincipalAmountRedeemed / us-gaap_DebtInstrumentAxis = dar_SeniorNotes8.5due2018Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Redemption, Redemption Premium Amount |  |  |  | 27,300,000 dar_DebtInstrumentRedemptionRedemptionPremiumAmount |  |  |  | 27,300,000 dar_DebtInstrumentRedemptionRedemptionPremiumAmount / us-gaap_DebtInstrumentAxis = dar_SeniorNotes8.5due2018Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Redemption, Accrued Interest and Penalties |  |  |  |  |  |  |  | 3,100,000 dar_DebtInstrumentRedemptionAccruedInterestandPenalties / us-gaap_DebtInstrumentAxis = dar_SeniorNotes8.5due2018Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Guarantee Indebtedness Amount Related to Restricted Subsidiary |  |  |  |  |  |  |  |  |  |  | $ 50,000,000 dar_GuaranteeIndebtednessAmountRelatedtoRestrictedSubsidiary / us-gaap_DebtInstrumentAxis = dar_SeniorNotes5.375Due2022Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_DebtInstrumentAxis = dar_SeniorNotes5.375Due2022Member / us-gaap_DebtInstrumentRedemptionPeriodAxis = dar_PriortoJanuary152017Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember | 105.375%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_DebtInstrumentAxis = dar_SeniorNotes5.375Due2022Member / us-gaap_DebtInstrumentRedemptionPeriodAxis = dar_PriortoJanuary152017withAdditionalRestrictionsMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |
Debt Instrument, Redemption Period |  |  |  |  |  |  |  |  |  | 90 |  | 30 days | 60 days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed |  |  |  |  |  |  |  |  |  |  |  | 50.00%us-gaap_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountRedeemed / us-gaap_DebtInstrumentAxis = dar_SeniorNotes5.375Due2022Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember / us-gaap_RangeAxis = us-gaap_MinimumMember | 40.00%us-gaap_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountRedeemed / us-gaap_DebtInstrumentAxis = dar_SeniorNotes5.375Due2022Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember / us-gaap_RangeAxis = us-gaap_MaximumMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

X
- Definition Debt Instrument, Periodic Payment, Percent of Principal + References No definition available. + Details
Name: | dar_DebtInstrumentPeriodicPaymentPercentofPrincipal
Namespace Prefix: | dar_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Debt Instrument, Redemption, Accrued Interest and Penalties + References No definition available. + Details
Name: | dar_DebtInstrumentRedemptionAccruedInterestandPenalties
Namespace Prefix: | dar_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Debt Instrument, Redemption Period + References No definition available. + Details
Name: | dar_DebtInstrumentRedemptionPeriod
Namespace Prefix: | dar_
Data Type: | us-types:durationStringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Debt Instrument, Redemption, Principal Amount Redeemed + References No definition available. + Details
Name: | dar_DebtInstrumentRedemptionPrincipalAmountRedeemed
Namespace Prefix: | dar_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Debt Instrument, Redemption, Redemption Premium Amount + References No definition available. + Details
Name: | dar_DebtInstrumentRedemptionRedemptionPremiumAmount
Namespace Prefix: | dar_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Default Event Percent of Principal Held in Order to Declare Notes Due and Payable Immediately + References No definition available. + Details
Name: | dar_DefaultEventPercentOfPrincipalHeldInOrderToDeclareNotesDueAndPayableImmediately
Namespace Prefix: | dar_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Guarantee Indebtedness Amount + References No definition available. + Details
Name: | dar_GuaranteeIndebtednessAmountRelatedtoRestrictedSubsidiary
Namespace Prefix: | dar_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line of Credit Facility, Term + References No definition available. + Details
Name: | dar_LineOfCreditFacilityTerm
Namespace Prefix: | dar_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of capital lease obligation due within one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6455314&loc=d3e45023-112735 + Details
Name: | us-gaap_CapitalLeaseObligationsCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6455314&loc=d3e45023-112735 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 + Details
Name: | us-gaap_CapitalLeaseObligationsNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage price of original principal amount of debt at which debt can be redeemed by the issuer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph e -URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823 + Details
Name: | us-gaap_DebtInstrumentRedemptionPricePercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of principal amount of debt redeemed. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountRedeemed
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition For an unclassified balance sheet, the carrying amount (net of accumulated amortization) as of the balance sheet date of capitalized costs associated with the issuance of debt instruments (for example, legal, accounting, underwriting, printing, and registration costs) that will be charged against earnings over the life of the debt instruments to which such costs pertain. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28555-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 17 -Article 5 + Details
Name: | us-gaap_DeferredFinanceCostsNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
Name: | us-gaap_LineOfCredit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of the fee for available but unused credit capacity under the credit facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
Name: | us-gaap_LineOfCreditFacilityCommitmentFeeAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The effective interest rate at the end of the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
Name: | us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
Name: | us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
Name: | us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant