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Guarantor Financial Information Condensed Consolidated Statements of Cash Flows (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Jan. 03, 2015
Dec. 28, 2013
Dec. 29, 2012
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest $ 68,311us-gaap_ProfitLoss $ 108,967us-gaap_ProfitLoss $ 130,770us-gaap_ProfitLoss
Cash flows from operating activities:      
Earnings in investments in subsidiaries 0dar_EarningsInInvestmentsInSubsidiaries 0dar_EarningsInInvestmentsInSubsidiaries 0dar_EarningsInInvestmentsInSubsidiaries
Other operating cash flows 206,861us-gaap_OtherOperatingActivitiesCashFlowStatement 101,754us-gaap_OtherOperatingActivitiesCashFlowStatement 118,767us-gaap_OtherOperatingActivitiesCashFlowStatement
Net cash provided by operating activities 275,172us-gaap_NetCashProvidedByUsedInOperatingActivities 210,721us-gaap_NetCashProvidedByUsedInOperatingActivities 249,537us-gaap_NetCashProvidedByUsedInOperatingActivities
Cash flows from investing activities:      
Capital expenditures (228,918)us-gaap_PaymentsToAcquireProductiveAssets [1] (118,307)us-gaap_PaymentsToAcquireProductiveAssets [1] (115,413)us-gaap_PaymentsToAcquireProductiveAssets [1]
Acquisitions, net of cash acquired (2,094,400)us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired (734,075)us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired (3,000)us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
Investment in unconsolidated subsidiary 0us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates (44,959)us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates (43,424)us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates
Notes Receivables From Affiliates 0dar_NotesReceivablesFromAffiliates 0dar_NotesReceivablesFromAffiliates  
Gross proceeds from sale of property, plant and equipment and other assets 9,262dar_GrossProceedsFromDisposalOfPropertyPlantAndEquipmentAndOtherAssets 2,358dar_GrossProceedsFromDisposalOfPropertyPlantAndEquipmentAndOtherAssets 3,870dar_GrossProceedsFromDisposalOfPropertyPlantAndEquipmentAndOtherAssets
Proceeds from Insurance Settlement 1,550us-gaap_ProceedsFromInsuranceSettlementInvestingActivities 1,981us-gaap_ProceedsFromInsuranceSettlementInvestingActivities 4,272us-gaap_ProceedsFromInsuranceSettlementInvestingActivities
Payments related to routes and other intangibles (11,288)us-gaap_PaymentsToAcquireIntangibleAssets (2,423)us-gaap_PaymentsToAcquireIntangibleAssets (137)us-gaap_PaymentsToAcquireIntangibleAssets
Net cash used by investing activities (2,323,794)us-gaap_NetCashProvidedByUsedInInvestingActivities (895,425)us-gaap_NetCashProvidedByUsedInInvestingActivities (153,832)us-gaap_NetCashProvidedByUsedInInvestingActivities
Cash flows from financing activities:      
Proceeds from long-term debt 1,842,184us-gaap_ProceedsFromIssuanceOfLongTermDebt 344,704us-gaap_ProceedsFromIssuanceOfLongTermDebt 0us-gaap_ProceedsFromIssuanceOfLongTermDebt
Payments on long-term debt (333,762)us-gaap_RepaymentsOfLongTermDebt (580)us-gaap_RepaymentsOfLongTermDebt (30,032)us-gaap_RepaymentsOfLongTermDebt
Borrowings from revolving credit facility 170,143us-gaap_ProceedsFromLongTermLinesOfCredit 293,235us-gaap_ProceedsFromLongTermLinesOfCredit 0us-gaap_ProceedsFromLongTermLinesOfCredit
Payments on revolving credit facility (351,589)us-gaap_RepaymentsOfLongTermLinesOfCredit (5,000)us-gaap_RepaymentsOfLongTermLinesOfCredit 0us-gaap_RepaymentsOfLongTermLinesOfCredit
Net cash overdraft financing 4,077us-gaap_ProceedsFromRepaymentsOfBankOverdrafts 0us-gaap_ProceedsFromRepaymentsOfBankOverdrafts 0us-gaap_ProceedsFromRepaymentsOfBankOverdrafts
Borrowings From Affiliates 0dar_BorrowingsFromAffiliates 0dar_BorrowingsFromAffiliates  
Deferred loan costs (45,223)us-gaap_PaymentsOfDebtIssuanceCosts (13,320)us-gaap_PaymentsOfDebtIssuanceCosts 0us-gaap_PaymentsOfDebtIssuanceCosts
Issuance of common stock 416us-gaap_ProceedsFromIssuanceOfCommonStock 840,558us-gaap_ProceedsFromIssuanceOfCommonStock 72us-gaap_ProceedsFromIssuanceOfCommonStock
Proceeds from Contributions from Parent 0us-gaap_ProceedsFromContributionsFromParent 0us-gaap_ProceedsFromContributionsFromParent 0us-gaap_ProceedsFromContributionsFromParent
Minimum withholding taxes paid on stock awards (10,026)dar_MinimumWithholdingTaxesPaidOnStockAwards (3,289)dar_MinimumWithholdingTaxesPaidOnStockAwards (4,084)dar_MinimumWithholdingTaxesPaidOnStockAwards
Excess tax benefits from stock-based compensation 2,420us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities 1,138us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities 2,652us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
Addition of noncontrolling interest 1,201us-gaap_ProceedsFromMinorityShareholders 0us-gaap_ProceedsFromMinorityShareholders 0us-gaap_ProceedsFromMinorityShareholders
Distributions to noncontrolling interests (4,272)us-gaap_PaymentsToMinorityShareholders 0us-gaap_PaymentsToMinorityShareholders 0us-gaap_PaymentsToMinorityShareholders
Net cash provided/(used) in financing activities 1,275,569us-gaap_NetCashProvidedByUsedInFinancingActivities 1,457,446us-gaap_NetCashProvidedByUsedInFinancingActivities (31,392)us-gaap_NetCashProvidedByUsedInFinancingActivities
Effect of Exchange Rate on Cash and Cash Equivalents 10,980us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents (5,134)us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents 0us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
Net increase/(decrease) in cash and cash equivalents (762,073)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease 767,608us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease 64,313us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Cash and cash equivalents at beginning of year 870,857us-gaap_CashAndCashEquivalentsAtCarryingValue 103,249us-gaap_CashAndCashEquivalentsAtCarryingValue 38,936us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash and cash equivalents at end of year 108,784us-gaap_CashAndCashEquivalentsAtCarryingValue 870,857us-gaap_CashAndCashEquivalentsAtCarryingValue 103,249us-gaap_CashAndCashEquivalentsAtCarryingValue
Issuer [Member]      
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest 68,311us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
108,967us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
130,770us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Cash flows from operating activities:      
Earnings in investments in subsidiaries (223,790)dar_EarningsInInvestmentsInSubsidiaries
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(105,178)dar_EarningsInInvestmentsInSubsidiaries
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(119,953)dar_EarningsInInvestmentsInSubsidiaries
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Other operating cash flows 226,120us-gaap_OtherOperatingActivitiesCashFlowStatement
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
135,315us-gaap_OtherOperatingActivitiesCashFlowStatement
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
175,098us-gaap_OtherOperatingActivitiesCashFlowStatement
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Net cash provided by operating activities 70,641us-gaap_NetCashProvidedByUsedInOperatingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
139,104us-gaap_NetCashProvidedByUsedInOperatingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
185,915us-gaap_NetCashProvidedByUsedInOperatingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Cash flows from investing activities:      
Capital expenditures (39,248)us-gaap_PaymentsToAcquireProductiveAssets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(45,173)us-gaap_PaymentsToAcquireProductiveAssets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(49,619)us-gaap_PaymentsToAcquireProductiveAssets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Acquisitions, net of cash acquired 0us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(3,000)us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Investment in unconsolidated subsidiary (1,483,007)us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(600,537)us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(43,449)us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Notes Receivables From Affiliates 0dar_NotesReceivablesFromAffiliates
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0dar_NotesReceivablesFromAffiliates
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Gross proceeds from sale of property, plant and equipment and other assets 1,522dar_GrossProceedsFromDisposalOfPropertyPlantAndEquipmentAndOtherAssets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
1,329dar_GrossProceedsFromDisposalOfPropertyPlantAndEquipmentAndOtherAssets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
2,083dar_GrossProceedsFromDisposalOfPropertyPlantAndEquipmentAndOtherAssets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Proceeds from Insurance Settlement 1,350us-gaap_ProceedsFromInsuranceSettlementInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
1,531us-gaap_ProceedsFromInsuranceSettlementInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
1,305us-gaap_ProceedsFromInsuranceSettlementInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Payments related to routes and other intangibles (9,640)us-gaap_PaymentsToAcquireIntangibleAssets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(2,423)us-gaap_PaymentsToAcquireIntangibleAssets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(137)us-gaap_PaymentsToAcquireIntangibleAssets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Net cash used by investing activities (1,529,023)us-gaap_NetCashProvidedByUsedInInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(645,273)us-gaap_NetCashProvidedByUsedInInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(92,817)us-gaap_NetCashProvidedByUsedInInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Cash flows from financing activities:      
Proceeds from long-term debt 1,100,000us-gaap_ProceedsFromIssuanceOfLongTermDebt
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
200,000us-gaap_ProceedsFromIssuanceOfLongTermDebt
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Payments on long-term debt (264,500)us-gaap_RepaymentsOfLongTermDebt
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_RepaymentsOfLongTermDebt
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(30,000)us-gaap_RepaymentsOfLongTermDebt
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Borrowings from revolving credit facility 122,445us-gaap_ProceedsFromLongTermLinesOfCredit
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
245,000us-gaap_ProceedsFromLongTermLinesOfCredit
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Payments on revolving credit facility (297,445)us-gaap_RepaymentsOfLongTermLinesOfCredit
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(5,000)us-gaap_RepaymentsOfLongTermLinesOfCredit
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Net cash overdraft financing 0us-gaap_ProceedsFromRepaymentsOfBankOverdrafts
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Borrowings From Affiliates 0dar_BorrowingsFromAffiliates
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0dar_BorrowingsFromAffiliates
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Deferred loan costs (41,748)us-gaap_PaymentsOfDebtIssuanceCosts
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(11,916)us-gaap_PaymentsOfDebtIssuanceCosts
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Issuance of common stock 416us-gaap_ProceedsFromIssuanceOfCommonStock
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
840,558us-gaap_ProceedsFromIssuanceOfCommonStock
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
72us-gaap_ProceedsFromIssuanceOfCommonStock
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Proceeds from Contributions from Parent 0us-gaap_ProceedsFromContributionsFromParent
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_ProceedsFromContributionsFromParent
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_ProceedsFromContributionsFromParent
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Minimum withholding taxes paid on stock awards (10,026)dar_MinimumWithholdingTaxesPaidOnStockAwards
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(3,289)dar_MinimumWithholdingTaxesPaidOnStockAwards
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(4,084)dar_MinimumWithholdingTaxesPaidOnStockAwards
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Excess tax benefits from stock-based compensation 2,420us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
1,138us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
2,652us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Addition of noncontrolling interest 0us-gaap_ProceedsFromMinorityShareholders
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Distributions to noncontrolling interests 0us-gaap_PaymentsToMinorityShareholders
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Net cash provided/(used) in financing activities 611,562us-gaap_NetCashProvidedByUsedInFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
1,266,491us-gaap_NetCashProvidedByUsedInFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(31,360)us-gaap_NetCashProvidedByUsedInFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Effect of Exchange Rate on Cash and Cash Equivalents 0us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Net increase/(decrease) in cash and cash equivalents (846,820)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
760,322us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
61,738us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Cash and cash equivalents at beginning of year 857,267us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
96,945us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Cash and cash equivalents at end of year 10,447us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
857,267us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
96,945us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Guarantors [Member]      
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest 155,250us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
107,317us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
121,321us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Cash flows from operating activities:      
Earnings in investments in subsidiaries 0dar_EarningsInInvestmentsInSubsidiaries
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0dar_EarningsInInvestmentsInSubsidiaries
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0dar_EarningsInInvestmentsInSubsidiaries
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Other operating cash flows (34,238)us-gaap_OtherOperatingActivitiesCashFlowStatement
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(39,459)us-gaap_OtherOperatingActivitiesCashFlowStatement
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(56,445)us-gaap_OtherOperatingActivitiesCashFlowStatement
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Net cash provided by operating activities 121,012us-gaap_NetCashProvidedByUsedInOperatingActivities
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
67,858us-gaap_NetCashProvidedByUsedInOperatingActivities
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
64,876us-gaap_NetCashProvidedByUsedInOperatingActivities
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Cash flows from investing activities:      
Capital expenditures (84,299)us-gaap_PaymentsToAcquireProductiveAssets
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(68,716)us-gaap_PaymentsToAcquireProductiveAssets
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(65,794)us-gaap_PaymentsToAcquireProductiveAssets
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Acquisitions, net of cash acquired (19,394)us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(121,440)us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Investment in unconsolidated subsidiary (1,442,788)us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(63,115)us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Notes Receivables From Affiliates (204,074)dar_NotesReceivablesFromAffiliates
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(370,996)dar_NotesReceivablesFromAffiliates
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
 
Gross proceeds from sale of property, plant and equipment and other assets 5,155dar_GrossProceedsFromDisposalOfPropertyPlantAndEquipmentAndOtherAssets
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
1,029dar_GrossProceedsFromDisposalOfPropertyPlantAndEquipmentAndOtherAssets
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
1,787dar_GrossProceedsFromDisposalOfPropertyPlantAndEquipmentAndOtherAssets
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Proceeds from Insurance Settlement 200us-gaap_ProceedsFromInsuranceSettlementInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
450us-gaap_ProceedsFromInsuranceSettlementInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
2,967us-gaap_ProceedsFromInsuranceSettlementInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Payments related to routes and other intangibles 0us-gaap_PaymentsToAcquireIntangibleAssets
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0us-gaap_PaymentsToAcquireIntangibleAssets
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0us-gaap_PaymentsToAcquireIntangibleAssets
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Net cash used by investing activities (1,745,200)us-gaap_NetCashProvidedByUsedInInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(622,788)us-gaap_NetCashProvidedByUsedInInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(61,040)us-gaap_NetCashProvidedByUsedInInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Cash flows from financing activities:      
Proceeds from long-term debt 0us-gaap_ProceedsFromIssuanceOfLongTermDebt
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0us-gaap_ProceedsFromIssuanceOfLongTermDebt
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
 
Payments on long-term debt (87)us-gaap_RepaymentsOfLongTermDebt
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(82)us-gaap_RepaymentsOfLongTermDebt
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(32)us-gaap_RepaymentsOfLongTermDebt
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Borrowings from revolving credit facility 0us-gaap_ProceedsFromLongTermLinesOfCredit
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0us-gaap_ProceedsFromLongTermLinesOfCredit
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
 
Payments on revolving credit facility 0us-gaap_RepaymentsOfLongTermLinesOfCredit
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0us-gaap_RepaymentsOfLongTermLinesOfCredit
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
 
Net cash overdraft financing 0us-gaap_ProceedsFromRepaymentsOfBankOverdrafts
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
   
Borrowings From Affiliates 0dar_BorrowingsFromAffiliates
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0dar_BorrowingsFromAffiliates
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
 
Deferred loan costs 0us-gaap_PaymentsOfDebtIssuanceCosts
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0us-gaap_PaymentsOfDebtIssuanceCosts
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
 
Issuance of common stock 0us-gaap_ProceedsFromIssuanceOfCommonStock
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0us-gaap_ProceedsFromIssuanceOfCommonStock
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0us-gaap_ProceedsFromIssuanceOfCommonStock
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Proceeds from Contributions from Parent 1,632,618us-gaap_ProceedsFromContributionsFromParent
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
555,552us-gaap_ProceedsFromContributionsFromParent
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0us-gaap_ProceedsFromContributionsFromParent
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Minimum withholding taxes paid on stock awards 0dar_MinimumWithholdingTaxesPaidOnStockAwards
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0dar_MinimumWithholdingTaxesPaidOnStockAwards
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0dar_MinimumWithholdingTaxesPaidOnStockAwards
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Excess tax benefits from stock-based compensation 0us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Addition of noncontrolling interest 0us-gaap_ProceedsFromMinorityShareholders
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
   
Distributions to noncontrolling interests 0us-gaap_PaymentsToMinorityShareholders
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
   
Net cash provided/(used) in financing activities 1,632,531us-gaap_NetCashProvidedByUsedInFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
555,470us-gaap_NetCashProvidedByUsedInFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(32)us-gaap_NetCashProvidedByUsedInFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Effect of Exchange Rate on Cash and Cash Equivalents 0us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
 
Net increase/(decrease) in cash and cash equivalents 8,343us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
540us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
3,804us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Cash and cash equivalents at beginning of year 6,117us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
5,577us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
 
Cash and cash equivalents at end of year 14,460us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
6,117us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
5,577us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Non-guarantors [Member]      
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest 68,540us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(2,139)us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(1,368)us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Cash flows from operating activities:      
Earnings in investments in subsidiaries 0dar_EarningsInInvestmentsInSubsidiaries
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0dar_EarningsInInvestmentsInSubsidiaries
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0dar_EarningsInInvestmentsInSubsidiaries
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Other operating cash flows 14,979us-gaap_OtherOperatingActivitiesCashFlowStatement
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
5,898us-gaap_OtherOperatingActivitiesCashFlowStatement
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
114us-gaap_OtherOperatingActivitiesCashFlowStatement
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Net cash provided by operating activities 83,519us-gaap_NetCashProvidedByUsedInOperatingActivities
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
3,759us-gaap_NetCashProvidedByUsedInOperatingActivities
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(1,254)us-gaap_NetCashProvidedByUsedInOperatingActivities
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Cash flows from investing activities:      
Capital expenditures (105,371)us-gaap_PaymentsToAcquireProductiveAssets
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(4,418)us-gaap_PaymentsToAcquireProductiveAssets
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0us-gaap_PaymentsToAcquireProductiveAssets
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Acquisitions, net of cash acquired (2,075,006)us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(612,635)us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Investment in unconsolidated subsidiary (440,619)us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(44,959)us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(43,424)us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Notes Receivables From Affiliates 204,074dar_NotesReceivablesFromAffiliates
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0dar_NotesReceivablesFromAffiliates
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
 
Gross proceeds from sale of property, plant and equipment and other assets 2,585dar_GrossProceedsFromDisposalOfPropertyPlantAndEquipmentAndOtherAssets
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0dar_GrossProceedsFromDisposalOfPropertyPlantAndEquipmentAndOtherAssets
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0dar_GrossProceedsFromDisposalOfPropertyPlantAndEquipmentAndOtherAssets
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Proceeds from Insurance Settlement 0us-gaap_ProceedsFromInsuranceSettlementInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0us-gaap_ProceedsFromInsuranceSettlementInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0us-gaap_ProceedsFromInsuranceSettlementInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Payments related to routes and other intangibles (1,648)us-gaap_PaymentsToAcquireIntangibleAssets
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0us-gaap_PaymentsToAcquireIntangibleAssets
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0us-gaap_PaymentsToAcquireIntangibleAssets
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Net cash used by investing activities (2,415,985)us-gaap_NetCashProvidedByUsedInInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(662,012)us-gaap_NetCashProvidedByUsedInInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(43,424)us-gaap_NetCashProvidedByUsedInInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Cash flows from financing activities:      
Proceeds from long-term debt 742,184us-gaap_ProceedsFromIssuanceOfLongTermDebt
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
144,704us-gaap_ProceedsFromIssuanceOfLongTermDebt
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
 
Payments on long-term debt (69,175)us-gaap_RepaymentsOfLongTermDebt
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(498)us-gaap_RepaymentsOfLongTermDebt
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0us-gaap_RepaymentsOfLongTermDebt
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Borrowings from revolving credit facility 47,698us-gaap_ProceedsFromLongTermLinesOfCredit
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
48,235us-gaap_ProceedsFromLongTermLinesOfCredit
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
 
Payments on revolving credit facility (54,144)us-gaap_RepaymentsOfLongTermLinesOfCredit
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0us-gaap_RepaymentsOfLongTermLinesOfCredit
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
 
Net cash overdraft financing 4,077us-gaap_ProceedsFromRepaymentsOfBankOverdrafts
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
   
Borrowings From Affiliates 0dar_BorrowingsFromAffiliates
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
370,996dar_BorrowingsFromAffiliates
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
 
Deferred loan costs (3,475)us-gaap_PaymentsOfDebtIssuanceCosts
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(1,404)us-gaap_PaymentsOfDebtIssuanceCosts
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
 
Issuance of common stock 0us-gaap_ProceedsFromIssuanceOfCommonStock
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0us-gaap_ProceedsFromIssuanceOfCommonStock
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0us-gaap_ProceedsFromIssuanceOfCommonStock
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Proceeds from Contributions from Parent 1,733,796us-gaap_ProceedsFromContributionsFromParent
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
108,100us-gaap_ProceedsFromContributionsFromParent
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
43,449us-gaap_ProceedsFromContributionsFromParent
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Minimum withholding taxes paid on stock awards 0dar_MinimumWithholdingTaxesPaidOnStockAwards
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0dar_MinimumWithholdingTaxesPaidOnStockAwards
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0dar_MinimumWithholdingTaxesPaidOnStockAwards
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Excess tax benefits from stock-based compensation 0us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Addition of noncontrolling interest 1,201us-gaap_ProceedsFromMinorityShareholders
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
   
Distributions to noncontrolling interests (4,272)us-gaap_PaymentsToMinorityShareholders
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
   
Net cash provided/(used) in financing activities 2,397,890us-gaap_NetCashProvidedByUsedInFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
670,133us-gaap_NetCashProvidedByUsedInFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
43,449us-gaap_NetCashProvidedByUsedInFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Effect of Exchange Rate on Cash and Cash Equivalents 10,980us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(5,134)us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
 
Net increase/(decrease) in cash and cash equivalents 76,404us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
6,746us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(1,229)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Cash and cash equivalents at beginning of year 7,473us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
727us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
 
Cash and cash equivalents at end of year 83,877us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
7,473us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
727us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Eliminations [Member]      
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest (223,790)us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
(105,178)us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
(119,953)us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
Cash flows from operating activities:      
Earnings in investments in subsidiaries 223,790dar_EarningsInInvestmentsInSubsidiaries
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
105,178dar_EarningsInInvestmentsInSubsidiaries
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
119,953dar_EarningsInInvestmentsInSubsidiaries
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
Other operating cash flows 0us-gaap_OtherOperatingActivitiesCashFlowStatement
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_OtherOperatingActivitiesCashFlowStatement
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_OtherOperatingActivitiesCashFlowStatement
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
Net cash provided by operating activities 0us-gaap_NetCashProvidedByUsedInOperatingActivities
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_NetCashProvidedByUsedInOperatingActivities
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_NetCashProvidedByUsedInOperatingActivities
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
Cash flows from investing activities:      
Capital expenditures 0us-gaap_PaymentsToAcquireProductiveAssets
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_PaymentsToAcquireProductiveAssets
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_PaymentsToAcquireProductiveAssets
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
Acquisitions, net of cash acquired 0us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
Investment in unconsolidated subsidiary 3,366,414us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
663,652us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
43,449us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
Notes Receivables From Affiliates 0dar_NotesReceivablesFromAffiliates
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
370,996dar_NotesReceivablesFromAffiliates
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
 
Gross proceeds from sale of property, plant and equipment and other assets 0dar_GrossProceedsFromDisposalOfPropertyPlantAndEquipmentAndOtherAssets
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0dar_GrossProceedsFromDisposalOfPropertyPlantAndEquipmentAndOtherAssets
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0dar_GrossProceedsFromDisposalOfPropertyPlantAndEquipmentAndOtherAssets
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
Proceeds from Insurance Settlement 0us-gaap_ProceedsFromInsuranceSettlementInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_ProceedsFromInsuranceSettlementInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_ProceedsFromInsuranceSettlementInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
Payments related to routes and other intangibles 0us-gaap_PaymentsToAcquireIntangibleAssets
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_PaymentsToAcquireIntangibleAssets
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_PaymentsToAcquireIntangibleAssets
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
Net cash used by investing activities 3,366,414us-gaap_NetCashProvidedByUsedInInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
1,034,648us-gaap_NetCashProvidedByUsedInInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
43,449us-gaap_NetCashProvidedByUsedInInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
Cash flows from financing activities:      
Proceeds from long-term debt 0us-gaap_ProceedsFromIssuanceOfLongTermDebt
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_ProceedsFromIssuanceOfLongTermDebt
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
 
Payments on long-term debt 0us-gaap_RepaymentsOfLongTermDebt
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_RepaymentsOfLongTermDebt
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_RepaymentsOfLongTermDebt
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
Borrowings from revolving credit facility 0us-gaap_ProceedsFromLongTermLinesOfCredit
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_ProceedsFromLongTermLinesOfCredit
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
 
Payments on revolving credit facility 0us-gaap_RepaymentsOfLongTermLinesOfCredit
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_RepaymentsOfLongTermLinesOfCredit
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
 
Net cash overdraft financing 0us-gaap_ProceedsFromRepaymentsOfBankOverdrafts
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
   
Borrowings From Affiliates 0dar_BorrowingsFromAffiliates
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
(370,996)dar_BorrowingsFromAffiliates
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
 
Deferred loan costs 0us-gaap_PaymentsOfDebtIssuanceCosts
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_PaymentsOfDebtIssuanceCosts
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
 
Issuance of common stock 0us-gaap_ProceedsFromIssuanceOfCommonStock
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_ProceedsFromIssuanceOfCommonStock
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_ProceedsFromIssuanceOfCommonStock
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
Proceeds from Contributions from Parent (3,366,414)us-gaap_ProceedsFromContributionsFromParent
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
(663,652)us-gaap_ProceedsFromContributionsFromParent
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
(43,449)us-gaap_ProceedsFromContributionsFromParent
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
Minimum withholding taxes paid on stock awards 0dar_MinimumWithholdingTaxesPaidOnStockAwards
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0dar_MinimumWithholdingTaxesPaidOnStockAwards
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0dar_MinimumWithholdingTaxesPaidOnStockAwards
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
Excess tax benefits from stock-based compensation 0us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
Addition of noncontrolling interest 0us-gaap_ProceedsFromMinorityShareholders
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
   
Distributions to noncontrolling interests 0us-gaap_PaymentsToMinorityShareholders
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
   
Net cash provided/(used) in financing activities (3,366,414)us-gaap_NetCashProvidedByUsedInFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
(1,034,648)us-gaap_NetCashProvidedByUsedInFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
(43,449)us-gaap_NetCashProvidedByUsedInFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
Effect of Exchange Rate on Cash and Cash Equivalents 0us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
 
Net increase/(decrease) in cash and cash equivalents 0us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
Cash and cash equivalents at beginning of year 0us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
 
Cash and cash equivalents at end of year $ 0us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
$ 0us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
$ 0us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
[1] Excludes the capital assets acquired as part of the acquisition of assets related to VION Acquisition and Custom Blenders acquisition in fiscal 2014 of approximately $984.2 million, the Terra Transaction and the Rothsay Acquisition in fiscal 2013 of approximately $167.0 million and the BioPur acquisition in fiscal 2012 of approximately $0.6 million