false--12-31FY20190001694426002200000000.60.961.140.010.011100000001100000009047807590987025200000000P15YP13YP5Y0000003000008000001500000P1Y2060000000.010.0110000000100000000000P40YP40YP6YP40YP50YP5YP40YP10YP15YP15YP5YP4YP7YP15YP3YP15YP3YP5YP3YP3Y0.03720.02330.02600.02410.02000.02030.49180.46540.49420.44660.48940.39980.47490.44030.47520.36110.48160.39670.02580.01930.02920.02730.02410.02420.00600.01430.01560.02400.01570.0164P4Y9M26DP3Y0M22DP4Y7M13DP2Y9M22DP4Y7M13D P2Y9M22DP4Y4M13DP2Y0M22DP4Y4M17DP2Y0M22DP4Y6M26DP2Y0M22D12477780175168147400000 0001694426 2019-01-01 2019-12-31 0001694426 2019-06-30 0001694426 2020-02-21 0001694426 2019-12-31 0001694426 2018-12-31 0001694426 2018-01-01 2018-12-31 0001694426 2017-01-01 2017-12-31 0001694426 us-gaap:InterestRateSwapMember 2017-01-01 2017-12-31 0001694426 us-gaap:CommodityContractMember 2017-01-01 2017-12-31 0001694426 us-gaap:CommodityContractMember 2019-01-01 2019-12-31 0001694426 us-gaap:InterestRateSwapMember 2019-01-01 2019-12-31 0001694426 us-gaap:InterestRateSwapMember 2018-01-01 2018-12-31 0001694426 us-gaap:CommodityContractMember 2018-01-01 2018-12-31 0001694426 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2018-01-01 2018-12-31 0001694426 us-gaap:RetainedEarningsMember 2018-01-01 0001694426 us-gaap:AdditionalPaidInCapitalMember 2018-01-01 2018-12-31 0001694426 us-gaap:NoncontrollingInterestMember 2018-01-01 2018-12-31 0001694426 us-gaap:TreasuryStockMember 2018-01-01 2018-12-31 0001694426 us-gaap:RetainedEarningsMember 2018-12-31 0001694426 us-gaap:CommodityContractMember us-gaap:AccumulatedOtherComprehensiveIncomeMember 2018-01-01 2018-12-31 0001694426 us-gaap:TreasuryStockMember 2018-12-31 0001694426 us-gaap:TreasuryStockMember 2017-12-31 0001694426 us-gaap:NoncontrollingInterestMember 2017-12-31 0001694426 us-gaap:CommonStockMember 2017-12-31 0001694426 us-gaap:CommonStockMember 2018-01-01 2018-12-31 0001694426 us-gaap:RetainedEarningsMember 2018-01-01 2018-12-31 0001694426 us-gaap:CommonStockMember 2018-12-31 0001694426 us-gaap:AdditionalPaidInCapitalMember 2017-12-31 0001694426 us-gaap:AdditionalPaidInCapitalMember 2018-12-31 0001694426 us-gaap:NoncontrollingInterestMember 2018-12-31 0001694426 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2017-12-31 0001694426 2017-12-31 0001694426 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2018-12-31 0001694426 us-gaap:InterestRateSwapMember us-gaap:AccumulatedOtherComprehensiveIncomeMember 2018-01-01 2018-12-31 0001694426 us-gaap:RetainedEarningsMember 2017-12-31 0001694426 2018-01-01 0001694426 us-gaap:NoncontrollingInterestMember 2019-01-01 2019-12-31 0001694426 us-gaap:AdditionalPaidInCapitalMember 2019-01-01 2019-12-31 0001694426 us-gaap:CommodityContractMember us-gaap:AccumulatedOtherComprehensiveIncomeMember 2019-01-01 2019-12-31 0001694426 us-gaap:RetainedEarningsMember 2019-01-01 2019-12-31 0001694426 us-gaap:TreasuryStockMember 2019-12-31 0001694426 us-gaap:CommonStockMember 2019-01-01 2019-12-31 0001694426 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2019-12-31 0001694426 us-gaap:AdditionalPaidInCapitalMember 2019-12-31 0001694426 us-gaap:RetainedEarningsMember 2019-12-31 0001694426 us-gaap:TreasuryStockMember 2019-01-01 2019-12-31 0001694426 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2019-01-01 2019-12-31 0001694426 us-gaap:CommonStockMember 2019-12-31 0001694426 us-gaap:NoncontrollingInterestMember 2019-12-31 0001694426 us-gaap:NewAccountingPronouncementMember us-gaap:RetainedEarningsMember 2018-01-01 0001694426 us-gaap:AdditionalPaidInCapitalMember 2017-01-01 2017-12-31 0001694426 us-gaap:TreasuryStockMember 2017-01-01 2017-12-31 0001694426 us-gaap:AdditionalPaidInCapitalMember 2016-12-31 0001694426 us-gaap:CommonStockMember 2016-12-31 0001694426 us-gaap:NoncontrollingInterestMember 2016-12-31 0001694426 us-gaap:RetainedEarningsMember 2017-01-01 2017-12-31 0001694426 us-gaap:RetainedEarningsMember 2016-12-31 0001694426 us-gaap:NoncontrollingInterestMember 2017-01-01 2017-12-31 0001694426 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2016-12-31 0001694426 us-gaap:TreasuryStockMember 2016-12-31 0001694426 us-gaap:CommonStockMember 2017-01-01 2017-12-31 0001694426 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2017-01-01 2017-12-31 0001694426 us-gaap:CommodityContractMember us-gaap:AccumulatedOtherComprehensiveIncomeMember 2017-01-01 2017-12-31 0001694426 2016-12-31 0001694426 us-gaap:InterestRateSwapMember us-gaap:AccumulatedOtherComprehensiveIncomeMember 2017-01-01 2017-12-31 0001694426 dk:AlonUSAEnergyInc.Member 2019-01-01 2019-12-31 0001694426 us-gaap:AccountsReceivableMember us-gaap:CustomerConcentrationRiskMember 2018-12-31 0001694426 srt:MaximumMember 2019-01-01 2019-12-31 0001694426 dk:AlonUSAEnergyInc.Member 2017-06-30 0001694426 us-gaap:SalesRevenueNetMember us-gaap:CustomerConcentrationRiskMember 2019-12-31 0001694426 us-gaap:AccountsReceivableMember us-gaap:CustomerConcentrationRiskMember 2019-12-31 0001694426 dk:FourAsphaltTerminalsMember 2018-02-12 0001694426 2018-05-21 2018-05-21 0001694426 us-gaap:AccountingStandardsUpdate201602Member 2019-01-01 0001694426 dk:FourAsphaltTerminalsMember 2018-05-21 0001694426 dk:ParamountNevadaAsphaltCompanyLLCMember 2018-02-12 0001694426 srt:MaximumMember dk:RefineryTurnaroundCostsMember 2019-01-01 2019-12-31 0001694426 srt:MinimumMember us-gaap:AssetRetirementObligationCostsMember 2019-01-01 2019-12-31 0001694426 srt:MinimumMember dk:PipelinestanksandterminalsMember 2019-01-01 2019-12-31 0001694426 srt:MaximumMember us-gaap:AutomobilesMember 2019-01-01 2019-12-31 0001694426 srt:MaximumMember dk:RetailStoreEquipmentandSiteImprovementsMember 2019-01-01 2019-12-31 0001694426 srt:MaximumMember us-gaap:BuildingAndBuildingImprovementsMember 2019-01-01 2019-12-31 0001694426 srt:MinimumMember us-gaap:BuildingAndBuildingImprovementsMember 2019-01-01 2019-12-31 0001694426 srt:MaximumMember us-gaap:AssetRetirementObligationCostsMember 2019-01-01 2019-12-31 0001694426 srt:MinimumMember dk:RefineryMachineryAndEquipmentMember 2019-01-01 2019-12-31 0001694426 srt:MaximumMember dk:RefineryMachineryAndEquipmentMember 2019-01-01 2019-12-31 0001694426 dk:AlonUSAEnergyInc.Member 2018-01-01 2018-12-31 0001694426 us-gaap:SalesRevenueNetMember us-gaap:CustomerConcentrationRiskMember 2017-12-31 0001694426 dk:AlonUSAEnergyInc.Member 2017-01-01 2017-12-31 0001694426 srt:MaximumMember dk:PipelinestanksandterminalsMember 2019-01-01 2019-12-31 0001694426 srt:MinimumMember dk:RefineryTurnaroundCostsMember 2019-01-01 2019-12-31 0001694426 us-gaap:SalesRevenueNetMember us-gaap:CustomerConcentrationRiskMember 2018-12-31 0001694426 srt:MinimumMember dk:RetailStoreEquipmentandSiteImprovementsMember 2019-01-01 2019-12-31 0001694426 srt:MinimumMember us-gaap:FurnitureAndFixturesMember 2019-01-01 2019-12-31 0001694426 srt:MinimumMember us-gaap:ComputerEquipmentMember 2019-01-01 2019-12-31 0001694426 srt:MaximumMember us-gaap:FurnitureAndFixturesMember 2019-01-01 2019-12-31 0001694426 srt:MinimumMember us-gaap:AutomobilesMember 2019-01-01 2019-12-31 0001694426 srt:MaximumMember us-gaap:ComputerEquipmentMember 2019-01-01 2019-12-31 0001694426 srt:MinimumMember 2019-01-01 2019-12-31 0001694426 dk:AlonUSAEnergyInc.Member 2018-01-01 2018-12-31 0001694426 dk:AlonUSAEnergyInc.Member dk:TaxEffectAdjustmentMember 2017-01-01 2017-12-31 0001694426 dk:AlonUSAEnergyInc.Member dk:AlonUSAEnergyInc.Member 2018-01-01 2018-12-31 0001694426 us-gaap:OperatingSegmentsMember dk:RefiningMember 2017-07-01 2017-07-01 0001694426 2017-07-01 2017-07-01 0001694426 dk:AlonUSAEnergyInc.Member 2017-07-01 0001694426 dk:ParamountNevadaAsphaltCompanyLLCMember 2018-05-21 0001694426 dk:AlonUSAEnergyInc.Member 2017-01-01 2017-12-31 0001694426 dk:AlonUSAEnergyInc.Member dk:ParentCompanysEquityIncomeEliminationAdjustmentMember 2017-01-01 2017-12-31 0001694426 dk:AlonUSAEnergyInc.Member dk:FuelSupplyAgreementMember 2017-07-01 0001694426 dk:AlonPartnershipMember dk:AlonUSAEnergyInc.Member 2017-07-01 2017-07-01 0001694426 dk:AlonUSAEnergyInc.Member 2019-01-01 2019-12-31 0001694426 us-gaap:OperatingSegmentsMember us-gaap:RetailMember 2017-07-01 2017-07-01 0001694426 dk:AlonUSAEnergyInc.Member dk:BigSpringRefineryMember 2018-02-07 2018-02-07 0001694426 dk:AlonUSAEnergyInc.Member 2017-07-01 2017-07-01 0001694426 dk:AlonUSAEnergyInc.Member us-gaap:TradeNamesMember 2017-07-01 2017-07-01 0001694426 dk:AlonUSAEnergyInc.Member dk:RightsofWayMember 2017-07-01 2017-07-01 0001694426 dk:AlonUSAEnergyInc.Member 2017-07-01 2017-07-01 0001694426 dk:AlonUSAEnergyInc.Member dk:KrotzSpringRefineryMember 2018-02-07 2018-02-07 0001694426 dk:AlonUSAEnergyInc.Member dk:BelowMarketLeaseMember 2017-07-01 0001694426 us-gaap:GeneralAndAdministrativeExpenseMember 2019-01-01 2019-12-31 0001694426 dk:AlonUSAEnergyInc.Member dk:LiquorLicensesMember 2017-07-01 2017-07-01 0001694426 dk:AlonUSAEnergyInc.Member us-gaap:TradeNamesMember 2017-07-01 0001694426 2017-07-01 0001694426 dk:AlonUSAEnergyInc.Member dk:FuelSupplyAgreementMember 2017-07-01 2017-07-01 0001694426 dk:AlonUSAEnergyInc.Member 2017-07-01 0001694426 dk:AlonUSAEnergyInc.Member 2017-07-01 0001694426 dk:AlonUSAEnergyInc.Member 2019-12-31 0001694426 us-gaap:GeneralAndAdministrativeExpenseMember 2018-01-01 2018-12-31 0001694426 us-gaap:OperatingSegmentsMember dk:RefiningMember dk:BiodieselTaxCreditMember 2019-12-31 0001694426 us-gaap:OperatingSegmentsMember dk:RefiningMember dk:BiodieselTaxCreditMember 2018-12-31 0001694426 dk:RefiningMember dk:KrotzSpringRefineryMember 2019-01-01 2019-12-31 0001694426 us-gaap:DisposalGroupNotDiscontinuedOperationsMember dk:RetailStoresMember 2019-12-31 0001694426 dk:RefiningMember 2019-01-01 2019-12-31 0001694426 dk:RefiningMember dk:TylerRefineryMember 2019-01-01 2019-12-31 0001694426 us-gaap:OperatingSegmentsMember dk:RefiningMember dk:BiodieselTaxCreditRenewableBlendingActivitiesMember 2018-01-01 2018-12-31 0001694426 dk:RefiningMember dk:TylerRefineryAndTheElDoradoRefineryMember 2019-01-01 2019-12-31 0001694426 dk:RefiningMember dk:BigSpringRefineryMember 2019-01-01 2019-12-31 0001694426 dk:RefiningMember dk:ElDoradoRefineryMember 2019-01-01 2019-12-31 0001694426 us-gaap:OperatingSegmentsMember dk:RefiningMember 2019-12-31 0001694426 us-gaap:RetailMember 2019-12-31 0001694426 us-gaap:IntersegmentEliminationMember dk:RefiningMember 2019-12-31 0001694426 us-gaap:IntersegmentEliminationMember dk:LogisticsMember 2019-12-31 0001694426 us-gaap:IntersegmentEliminationMember us-gaap:RetailMember 2019-12-31 0001694426 us-gaap:CorporateNonSegmentMember 2019-12-31 0001694426 us-gaap:IntersegmentEliminationMember 2019-12-31 0001694426 us-gaap:OperatingSegmentsMember dk:LogisticsMember 2019-12-31 0001694426 dk:RefiningMember 2019-12-31 0001694426 us-gaap:OperatingSegmentsMember us-gaap:RetailMember 2019-12-31 0001694426 dk:CorporateAndEliminationsMember 2019-12-31 0001694426 dk:LogisticsMember 2019-12-31 0001694426 us-gaap:RetailMember 2018-12-31 0001694426 us-gaap:IntersegmentEliminationMember us-gaap:RetailMember 2018-12-31 0001694426 us-gaap:IntersegmentEliminationMember dk:RefiningMember 2018-12-31 0001694426 us-gaap:OperatingSegmentsMember dk:RefiningMember 2018-12-31 0001694426 dk:RefiningMember 2018-12-31 0001694426 us-gaap:IntersegmentEliminationMember 2018-12-31 0001694426 us-gaap:OperatingSegmentsMember dk:LogisticsMember 2018-12-31 0001694426 dk:CorporateAndEliminationsMember 2018-12-31 0001694426 dk:LogisticsMember 2018-12-31 0001694426 us-gaap:IntersegmentEliminationMember dk:LogisticsMember 2018-12-31 0001694426 us-gaap:CorporateNonSegmentMember 2018-12-31 0001694426 us-gaap:OperatingSegmentsMember us-gaap:RetailMember 2018-12-31 0001694426 us-gaap:IntersegmentEliminationMember 2017-01-01 2017-12-31 0001694426 us-gaap:OperatingSegmentsMember us-gaap:RetailMember 2017-01-01 2017-12-31 0001694426 us-gaap:IntersegmentEliminationMember dk:LogisticsMember 2017-01-01 2017-12-31 0001694426 us-gaap:CorporateNonSegmentMember 2017-01-01 2017-12-31 0001694426 us-gaap:OperatingSegmentsMember dk:LogisticsMember 2017-01-01 2017-12-31 0001694426 us-gaap:RetailMember 2017-01-01 2017-12-31 0001694426 us-gaap:IntersegmentEliminationMember dk:RefiningMember 2017-01-01 2017-12-31 0001694426 us-gaap:OperatingSegmentsMember dk:RefiningMember 2017-01-01 2017-12-31 0001694426 dk:RefiningMember 2017-01-01 2017-12-31 0001694426 us-gaap:IntersegmentEliminationMember us-gaap:RetailMember 2017-01-01 2017-12-31 0001694426 dk:LogisticsMember 2017-01-01 2017-12-31 0001694426 us-gaap:IntersegmentEliminationMember 2018-01-01 2018-12-31 0001694426 us-gaap:OperatingSegmentsMember dk:RefiningMember 2018-01-01 2018-12-31 0001694426 us-gaap:OperatingSegmentsMember us-gaap:RetailMember 2018-01-01 2018-12-31 0001694426 us-gaap:CorporateNonSegmentMember 2018-01-01 2018-12-31 0001694426 us-gaap:OperatingSegmentsMember dk:LogisticsMember 2018-01-01 2018-12-31 0001694426 us-gaap:IntersegmentEliminationMember dk:RefiningMember 2018-01-01 2018-12-31 0001694426 us-gaap:IntersegmentEliminationMember us-gaap:RetailMember 2018-01-01 2018-12-31 0001694426 us-gaap:IntersegmentEliminationMember dk:LogisticsMember 2018-01-01 2018-12-31 0001694426 us-gaap:RetailMember 2018-01-01 2018-12-31 0001694426 dk:LogisticsMember 2018-01-01 2018-12-31 0001694426 dk:RefiningMember 2018-01-01 2018-12-31 0001694426 us-gaap:OperatingSegmentsMember dk:LogisticsMember 2019-01-01 2019-12-31 0001694426 us-gaap:OperatingSegmentsMember us-gaap:RetailMember 2019-01-01 2019-12-31 0001694426 dk:LogisticsMember 2019-01-01 2019-12-31 0001694426 us-gaap:IntersegmentEliminationMember dk:RefiningMember 2019-01-01 2019-12-31 0001694426 us-gaap:IntersegmentEliminationMember 2019-01-01 2019-12-31 0001694426 us-gaap:CorporateNonSegmentMember 2019-01-01 2019-12-31 0001694426 us-gaap:IntersegmentEliminationMember dk:LogisticsMember 2019-01-01 2019-12-31 0001694426 us-gaap:RetailMember 2019-01-01 2019-12-31 0001694426 us-gaap:IntersegmentEliminationMember us-gaap:RetailMember 2019-01-01 2019-12-31 0001694426 us-gaap:OperatingSegmentsMember dk:RefiningMember 2019-01-01 2019-12-31 0001694426 dk:WarrantsExcludingLossMember 2017-01-01 2017-12-31 0001694426 us-gaap:WarrantMember 2019-01-01 2019-12-31 0001694426 dk:ConvertibleDebtSecuritiesExcludingLossMember 2019-01-01 2019-12-31 0001694426 us-gaap:StockCompensationPlanMember 2017-01-01 2017-12-31 0001694426 us-gaap:StockCompensationPlanMember 2018-01-01 2018-12-31 0001694426 dk:ConvertibleDebtSecuritiesExcludingLossMember 2018-01-01 2018-12-31 0001694426 us-gaap:ConvertibleDebtSecuritiesMember 2018-01-01 2018-12-31 0001694426 dk:StockCompensationPlanExcludingLossMember 2018-01-01 2018-12-31 0001694426 us-gaap:ConvertibleDebtSecuritiesMember 2019-01-01 2019-12-31 0001694426 dk:StockCompensationPlanLossMember 2018-01-01 2018-12-31 0001694426 dk:StockCompensationPlanExcludingLossMember 2019-01-01 2019-12-31 0001694426 us-gaap:ConvertibleDebtSecuritiesMember 2017-01-01 2017-12-31 0001694426 dk:WarrantsExcludingLossMember 2019-01-01 2019-12-31 0001694426 dk:WarrantsExcludingLossMember 2018-01-01 2018-12-31 0001694426 us-gaap:StockCompensationPlanMember 2019-01-01 2019-12-31 0001694426 us-gaap:WarrantMember 2018-01-01 2018-12-31 0001694426 dk:ConvertibleDebtSecuritiesExcludingLossMember 2017-01-01 2017-12-31 0001694426 dk:StockCompensationPlanLossMember 2017-01-01 2017-12-31 0001694426 dk:StockCompensationPlanExcludingLossMember 2017-01-01 2017-12-31 0001694426 dk:StockCompensationPlanLossMember 2019-01-01 2019-12-31 0001694426 us-gaap:WarrantMember 2017-01-01 2017-12-31 0001694426 us-gaap:CommonStockMember 2018-11-06 0001694426 dk:StockPurchaseAgreementMember 2018-01-16 2018-01-16 0001694426 dk:StockPurchaseAgreementMember 2016-12-01 2016-12-31 0001694426 dk:StockPurchaseAgreementMember 2017-01-01 2017-12-31 0001694426 2018-02-26 2018-02-26 0001694426 dk:StockPurchaseAgreementMember 2019-12-31 0001694426 dk:AlonPartnershipMember us-gaap:OtherOwnershipInterestMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2017-12-31 0001694426 dk:AlonUSAEnergyInc.Member 2018-02-06 0001694426 dk:AlonPartnershipMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2017-12-31 0001694426 dk:DelekLogisticsMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2019-12-31 0001694426 dk:BigSpringMarketingAgreementMember 2018-12-31 0001694426 dk:BigSpringLogisticsAgreementMember 2018-03-01 2018-03-31 0001694426 dk:DelekLogisticsMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2019-01-01 2019-12-31 0001694426 dk:AlonUSAEnergyInc.Member dk:NewDelekCommonStockMember 2018-02-07 0001694426 dk:DelekLogisticsMember dk:DelekLogisticsGPLLCMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2019-01-01 2019-12-31 0001694426 dk:AlonPartnershipMember dk:AlonUSAEnergyInc.Member us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2018-02-06 2018-02-06 0001694426 2018-10-01 2018-12-31 0001694426 dk:BigSpringMarketingAgreementMember 2018-03-01 2018-03-31 0001694426 dk:AlonPartnershipMember us-gaap:LimitedPartnerMember 2018-02-07 0001694426 dk:DelekLogisticsPartnersLPMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2018-12-31 0001694426 dk:DelekLogisticsPartnersLPMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2019-12-31 0001694426 dk:WinktoWebsterPipelineLLCMember 2019-12-31 0001694426 dk:AlonUSAEnergyInc.Member 2015-05-14 0001694426 dk:RedRiverPipelineCompanyLLCMember 2019-05-31 0001694426 srt:MaximumMember dk:WinktoWebsterPipelineLLCMember 2019-07-30 2019-07-30 0001694426 dk:AlonUSAEnergyInc.Member dk:AlonUSAEnergyInc.Member 2017-07-01 2017-07-01 0001694426 dk:DelekUSHoldingsInc.Member dk:JointVenturesMember 2018-12-31 0001694426 dk:DelekUSHoldingsInc.Member dk:JointVenturesMember 2019-12-31 0001694426 dk:RedRiverPipelineCompanyLLCMember 2019-01-01 2019-12-31 0001694426 dk:RedRiverPipelineCompanyLLCMember 2019-12-31 0001694426 dk:WinktoWebsterPipelineLLCMember us-gaap:SubsequentEventMember 2020-01-01 2020-02-27 0001694426 dk:DelekLogisticsPartnersLPMember dk:JointVenturesMember 2019-12-31 0001694426 srt:MinimumMember dk:WinktoWebsterPipelineLLCMember 2019-07-30 2019-07-30 0001694426 dk:JointVenturesMember dk:DelekUSHoldingsInc.Member 2017-07-01 2017-07-01 0001694426 dk:JointVenturesMember dk:DelekUSHoldingsInc.Member 2017-07-01 0001694426 dk:WinktoWebsterPipelineLLCMember 2019-01-01 2019-12-31 0001694426 dk:WinktoWebsterPipelineLLCMember 2015-05-14 0001694426 dk:DelekLogisticsPartnersLPMember dk:JointVenturesMember 2018-12-31 0001694426 dk:DelekLogisticsPartnersLPMember dk:JointVenturesMember 2019-01-01 2019-12-31 0001694426 dk:RedRiverExpansionMember 2019-05-31 0001694426 dk:AlonUSAEnergyInc.Member 2017-01-01 2017-06-30 0001694426 dk:CaliforniaDiscontinuedEntitiesAltAirMember 2019-01-01 2019-12-31 0001694426 dk:ParamountRefineryMember 2019-12-31 0001694426 dk:CaliforniaDiscontinuedEntitiesAltAirMember 2018-01-01 2018-12-31 0001694426 dk:CaliforniaDiscontinuedEntitiesLongBeachMember 2019-01-01 2019-12-31 0001694426 dk:CaliforniaDiscontinuedEntitiesAltAirMember 2018-12-31 0001694426 dk:CaliforniaDiscontinuedEntitiesLongBeachMember 2018-01-01 2018-12-31 0001694426 dk:CaliforniaDiscontinuedEntitiesAltAirMember 2019-12-31 0001694426 dk:ParamountRefineryMember 2019-01-01 2019-12-31 0001694426 dk:CaliforniaDiscontinuedEntitiesAltAirMember 2018-01-01 2019-12-31 0001694426 dk:WorldEnergyNoteReceivableMember 2019-08-31 0001694426 dk:CaliforniaDiscontinuedEntitiesLongBeachMember 2018-07-17 2018-07-17 0001694426 dk:WorldEnergyNoteReceivableMember 2019-01-01 2019-12-31 0001694426 us-gaap:DiscontinuedOperationsHeldforsaleMember dk:CaliforniaDiscontinuedEntitiesMember us-gaap:NoncontrollingInterestMember 2018-01-01 2018-12-31 0001694426 dk:CaliforniaDiscontinuedEntitiesLongBeachMember 2018-07-01 2018-09-30 0001694426 us-gaap:DiscontinuedOperationsHeldforsaleMember dk:CaliforniaDiscontinuedEntitiesMember 2018-01-01 2018-12-31 0001694426 us-gaap:DiscontinuedOperationsHeldforsaleMember dk:CaliforniaDiscontinuedEntitiesMember 2017-01-01 2017-12-31 0001694426 us-gaap:DiscontinuedOperationsHeldforsaleMember dk:CaliforniaDiscontinuedEntitiesMember 2019-01-01 2019-12-31 0001694426 us-gaap:CostOfSalesMember 2019-01-01 2019-12-31 0001694426 us-gaap:CostOfSalesMember 2018-01-01 2018-12-31 0001694426 us-gaap:CostOfSalesMember 2017-01-01 2017-12-31 0001694426 dk:LIFOinventoryMember 2018-12-31 0001694426 dk:LIFOinventoryMember 2019-12-31 0001694426 dk:J.AronCompanyMember dk:ElDoradoRefineryMember 2019-12-31 0001694426 dk:J.AronCompanyMember dk:ElDoradoRefineryMember 2018-12-31 0001694426 dk:J.AronCompanyMember dk:BigSpringAndKrotzSpringMember 2018-12-31 0001694426 dk:J.AronCompanyMember dk:BigSpringAndKrotzSpringMember 2019-12-31 0001694426 dk:J.AronCompanyMember dk:ElDoradoRefineryMember us-gaap:InterestExpenseMember 2017-01-01 2017-12-31 0001694426 dk:J.AronCompanyMember us-gaap:InterestExpenseMember 2018-01-01 2018-12-31 0001694426 dk:J.AronCompanyMember dk:BigSpringRefineryMember us-gaap:InterestExpenseMember 2019-01-01 2019-12-31 0001694426 dk:J.AronCompanyMember dk:ElDoradoRefineryMember us-gaap:InterestExpenseMember 2019-01-01 2019-12-31 0001694426 dk:J.AronCompanyMember dk:KrotzSpringRefineryMember us-gaap:InterestExpenseMember 2018-01-01 2018-12-31 0001694426 dk:J.AronCompanyMember dk:BigSpringRefineryMember us-gaap:InterestExpenseMember 2017-01-01 2017-12-31 0001694426 dk:J.AronCompanyMember dk:ElDoradoRefineryMember us-gaap:InterestExpenseMember 2018-01-01 2018-12-31 0001694426 dk:J.AronCompanyMember dk:BigSpringRefineryMember us-gaap:InterestExpenseMember 2018-01-01 2018-12-31 0001694426 dk:J.AronCompanyMember us-gaap:InterestExpenseMember 2019-01-01 2019-12-31 0001694426 dk:J.AronCompanyMember us-gaap:InterestExpenseMember 2017-01-01 2017-12-31 0001694426 dk:J.AronCompanyMember dk:KrotzSpringRefineryMember us-gaap:InterestExpenseMember 2019-01-01 2019-12-31 0001694426 dk:J.AronCompanyMember dk:KrotzSpringRefineryMember us-gaap:InterestExpenseMember 2017-01-01 2017-12-31 0001694426 dk:ElDoradoRefineryMember 2019-12-31 0001694426 dk:BaselineStepOutLiabilityMember 2019-12-31 0001694426 dk:BigSpringRefineryMember 2019-12-31 0001694426 dk:ElDoradoRefineryMember dk:BaselineStepOutLiabilityMember 2019-12-31 0001694426 dk:KrotzSpringRefineryMember 2019-12-31 0001694426 dk:KrotzSpringRefineryMember dk:BaselineStepOutLiabilityMember 2019-12-31 0001694426 dk:BigSpringRefineryMember dk:BaselineStepOutLiabilityMember 2019-12-31 0001694426 dk:J.AronCompanyMember dk:BigSpringRefineryMember 2018-12-31 0001694426 dk:J.AronCompanyMember dk:KrotzSpringRefineryMember 2018-12-31 0001694426 dk:J.AronCompanyMember dk:KrotzSpringRefineryMember 2019-12-31 0001694426 dk:J.AronCompanyMember dk:KrotzSpringRefineryMember dk:BaselineStepOutLiabilityMember 2019-12-31 0001694426 dk:J.AronCompanyMember dk:BigSpringRefineryMember dk:BaselineStepOutLiabilityMember 2019-12-31 0001694426 dk:J.AronCompanyMember dk:BigSpringRefineryMember 2019-12-31 0001694426 dk:J.AronCompanyMember dk:ElDoradoRefineryMember dk:BaselineStepOutLiabilityMember 2019-12-31 0001694426 dk:BigSpringRefineryMember 2018-12-31 0001694426 dk:KrotzSpringRefineryMember 2018-12-31 0001694426 dk:ElDoradoRefineryMember 2018-12-31 0001694426 dk:BigSpringRefineryMember dk:BaselineStepOutLiabilityMember 2018-12-31 0001694426 dk:ElDoradoRefineryMember dk:BaselineStepOutLiabilityMember 2018-12-31 0001694426 dk:KrotzSpringRefineryMember dk:BaselineStepOutLiabilityMember 2018-12-31 0001694426 dk:BaselineStepOutLiabilityMember 2018-12-31 0001694426 2019-09-01 2019-09-30 0001694426 dk:J.AronCompanyMember dk:AlonRefineryMember dk:BaselineStepOutLiabilityMember 2018-10-01 2018-12-31 0001694426 dk:J.AronCompanyMember dk:AlonRefineryMember dk:BaselineStepOutLiabilityMember 2019-01-01 2019-03-31 0001694426 dk:AlonPartnershipCreditFacilityMember 2018-03-30 0001694426 dk:AlonTermLoanCreditFacilitiesMember 2018-03-30 0001694426 dk:WellsRevolvingLoanMember 2018-03-30 0001694426 dk:AlonRetailCreditFacilitiesMember 2018-03-30 0001694426 2018-03-30 0001694426 dk:LionTermLoanMember 2018-03-30 0001694426 us-gaap:RevolvingCreditFacilityMember dk:ReliantBankRevolverMember us-gaap:LineOfCreditMember 2019-12-15 0001694426 us-gaap:RevolvingCreditFacilityMember dk:DklRevolverMember us-gaap:LineOfCreditMember 2019-12-31 0001694426 us-gaap:RevolvingCreditFacilityMember us-gaap:LineOfCreditMember 2019-12-31 0001694426 dk:A2025NotesMember us-gaap:DebtInstrumentRedemptionPeriodFourMember us-gaap:SeniorNotesMember 2017-05-23 2017-05-23 0001694426 us-gaap:LetterOfCreditMember 2018-03-30 0001694426 us-gaap:SecuredDebtMember 2018-03-30 0001694426 dk:HapoalimTermLoanMember us-gaap:SecuredDebtMember 2017-12-29 0001694426 dk:AlonConvertibleSeniorNotesMember us-gaap:SeniorNotesMember 2018-09-17 2018-09-17 0001694426 us-gaap:RevolvingCreditFacilityMember dk:ReliantBankRevolverMember us-gaap:LineOfCreditMember 2019-12-31 0001694426 srt:MinimumMember us-gaap:SecuredDebtMember us-gaap:BaseRateMember 2018-10-26 2018-10-26 0001694426 us-gaap:RevolvingCreditFacilityMember dk:WellsTermLoanMember us-gaap:LineOfCreditMember 2018-03-30 0001694426 dk:AlonConvertibleSeniorNotesMember us-gaap:SeniorNotesMember 2017-07-01 0001694426 dk:HapoalimTermLoanMember us-gaap:LineOfCreditMember 2019-12-31 0001694426 us-gaap:RevolvingCreditFacilityMember dk:DklRevolverMember dk:FifthThirdBankMember us-gaap:LineOfCreditMember 2018-09-28 0001694426 us-gaap:RevolvingCreditFacilityMember dk:DklRevolverMember dk:FifthThirdBankMember us-gaap:LineOfCreditMember 2019-12-31 0001694426 us-gaap:SecuredDebtMember 2019-12-31 0001694426 dk:AlonTermLoanCreditFacilitiesMember us-gaap:SecuredDebtMember us-gaap:EurodollarMember 2018-03-30 2018-03-30 0001694426 us-gaap:RevolvingCreditFacilityMember dk:DklRevolverMember dk:FifthThirdBankMember us-gaap:LineOfCreditMember 2018-09-27 0001694426 us-gaap:SecuredDebtMember us-gaap:BaseRateMember 2018-03-30 2018-03-30 0001694426 dk:IncrementalTermLoansMember us-gaap:SecuredDebtMember 2019-05-22 0001694426 srt:MaximumMember us-gaap:RevolvingCreditFacilityMember us-gaap:LineOfCreditMember 2019-01-01 2019-12-31 0001694426 dk:A2025NotesMember us-gaap:DebtInstrumentRedemptionPeriodFiveMember us-gaap:SeniorNotesMember 2017-05-23 2017-05-23 0001694426 dk:AlonUSAEnergyInc.Member dk:UnsecuredPromissoryNoteAlonMember us-gaap:LoansPayableMember 2015-05-14 2015-05-14 0001694426 dk:A2025NotesMember us-gaap:SeniorNotesMember 2019-12-31 0001694426 srt:MaximumMember us-gaap:SecuredDebtMember 2018-03-30 0001694426 dk:A2025NotesMember us-gaap:DebtInstrumentRedemptionPeriodOneMember us-gaap:SeniorNotesMember 2017-05-23 2017-05-23 0001694426 srt:MaximumMember us-gaap:RevolvingCreditFacilityMember us-gaap:LineOfCreditMember us-gaap:LondonInterbankOfferedRateLIBORMember 2019-10-01 2019-12-31 0001694426 dk:HapoalimTermLoanMember us-gaap:SeniorNotesMember 2019-12-31 0001694426 srt:MinimumMember us-gaap:RevolvingCreditFacilityMember us-gaap:LineOfCreditMember us-gaap:BaseRateMember 2019-10-01 2019-12-31 0001694426 dk:IncrementalTermLoansMember us-gaap:SecuredDebtMember 2018-03-30 2018-03-30 0001694426 dk:IncrementalTermLoansMember us-gaap:SecuredDebtMember 2018-03-30 0001694426 srt:MinimumMember us-gaap:RevolvingCreditFacilityMember us-gaap:LineOfCreditMember 2018-03-30 2018-03-30 0001694426 dk:DelekTermLoanCreditFacilityMember us-gaap:SecuredDebtMember 2019-12-31 0001694426 dk:DelekTermLoanCreditFacilityMember us-gaap:SecuredDebtMember 2018-12-31 0001694426 dk:A2025NotesMember us-gaap:SeniorNotesMember 2018-12-31 0001694426 dk:A2025NotesMember us-gaap:SeniorNotesMember 2019-01-01 2019-12-31 0001694426 dk:IncrementalTermLoansMember us-gaap:SecuredDebtMember 2010-11-22 0001694426 us-gaap:SecuredDebtMember us-gaap:LondonInterbankOfferedRateLIBORMember 2018-03-30 2018-03-30 0001694426 dk:AlongAsphaltTermLoanMember us-gaap:SecuredDebtMember 2018-03-30 0001694426 srt:MaximumMember us-gaap:RevolvingCreditFacilityMember us-gaap:LineOfCreditMember 2018-03-30 2018-03-30 0001694426 us-gaap:RevolvingCreditFacilityMember dk:WellsRevolvingLoanMember us-gaap:LineOfCreditMember 2018-03-30 0001694426 dk:AlonUSAEnergyInc.Member dk:UnsecuredPromissoryNoteAlonMember us-gaap:LoansPayableMember 2015-05-14 0001694426 us-gaap:RevolvingCreditFacilityMember dk:DklRevolverMember dk:FifthThirdBankMember us-gaap:LineOfCreditMember 2019-01-01 2019-12-31 0001694426 us-gaap:SecuredDebtMember 2018-03-30 2018-03-30 0001694426 srt:MinimumMember us-gaap:SecuredDebtMember us-gaap:LondonInterbankOfferedRateLIBORMember 2018-10-26 2018-10-26 0001694426 us-gaap:RevolvingCreditFacilityMember us-gaap:LineOfCreditMember us-gaap:BaseRateMember 2018-03-30 2018-03-30 0001694426 dk:A2025NotesMember us-gaap:SeniorNotesMember 2017-05-23 0001694426 dk:IncrementalTermLoansMember us-gaap:SecuredDebtMember 2019-11-22 2019-11-22 0001694426 dk:AlonRetailCreditFacilitiesMember us-gaap:SecuredDebtMember 2018-03-30 0001694426 dk:AlonUSAEnergyInc.Member dk:UnsecuredPromissoryNoteAlonMember us-gaap:LoansPayableMember 2019-12-31 0001694426 dk:A2025NotesMember us-gaap:DebtInstrumentRedemptionPeriodTwoMember us-gaap:SeniorNotesMember 2017-05-23 2017-05-23 0001694426 dk:HapoalimTermLoanMember us-gaap:LineOfCreditMember 2019-12-31 2019-12-31 0001694426 us-gaap:SecuredDebtMember 2018-01-01 2018-03-31 0001694426 srt:MinimumMember us-gaap:SecuredDebtMember 2018-03-30 0001694426 dk:TermLoanFacilityMember dk:LionTermLoanMember us-gaap:SecuredDebtMember us-gaap:InterestRateFloorMember 2018-03-30 2018-03-30 0001694426 dk:IncrementalTermLoansMember us-gaap:SecuredDebtMember 2019-05-22 2019-05-22 0001694426 srt:MaximumMember us-gaap:RevolvingCreditFacilityMember us-gaap:LineOfCreditMember us-gaap:BaseRateMember 2019-10-01 2019-12-31 0001694426 dk:A2025NotesMember us-gaap:DebtInstrumentRedemptionPeriodThreeMember us-gaap:SeniorNotesMember 2017-05-23 2017-05-23 0001694426 dk:AlonConvertibleSeniorNotesMember us-gaap:SeniorNotesMember dk:ExerciseOfCallOptionsMember 2018-09-17 2018-09-17 0001694426 dk:AlonTermLoanCreditFacilitiesMember us-gaap:SecuredDebtMember 2018-03-30 0001694426 dk:AlonPartnershipCreditFacilityMember us-gaap:LineOfCreditMember 2018-03-30 0001694426 us-gaap:RevolvingCreditFacilityMember us-gaap:LineOfCreditMember 2018-03-30 0001694426 dk:NewAlonEnergyTermLoanMember us-gaap:SecuredDebtMember 2017-12-29 0001694426 dk:TermLoanFacilityMember dk:LionTermLoanMember us-gaap:SecuredDebtMember 2018-03-30 0001694426 dk:AlonConvertibleSeniorNotesMember us-gaap:SeniorNotesMember 2018-11-09 2018-11-09 0001694426 dk:AlonConvertibleSeniorNotesMember us-gaap:SeniorNotesMember 2018-09-17 0001694426 dk:AlonConvertibleSeniorNotesMember us-gaap:SeniorNotesMember 2018-12-31 0001694426 us-gaap:LetterOfCreditMember dk:DklRevolverMember dk:FifthThirdBankMember us-gaap:LineOfCreditMember 2019-12-31 0001694426 us-gaap:RevolvingCreditFacilityMember dk:AlonRetailCreditFacilitiesMember us-gaap:LineOfCreditMember 2018-03-30 0001694426 us-gaap:LetterOfCreditMember 2019-12-31 0001694426 dk:AlongAsphaltTermLoanMember 2018-03-29 0001694426 dk:HapoalimTermLoanMember us-gaap:LineOfCreditMember us-gaap:LondonInterbankOfferedRateLIBORMember 2019-12-31 2019-12-31 0001694426 us-gaap:RevolvingCreditFacilityMember dk:ReliantBankRevolverMember us-gaap:LineOfCreditMember 2019-01-01 2019-12-31 0001694426 srt:MinimumMember us-gaap:RevolvingCreditFacilityMember us-gaap:LineOfCreditMember us-gaap:LondonInterbankOfferedRateLIBORMember 2019-10-01 2019-12-31 0001694426 us-gaap:RevolvingCreditFacilityMember us-gaap:LineOfCreditMember us-gaap:LondonInterbankOfferedRateLIBORMember 2018-03-30 2018-03-30 0001694426 dk:HapoalimTermLoanMember 2019-12-31 0001694426 dk:PromissoryNotesMember 2019-12-31 0001694426 dk:A2025NotesMember 2019-12-31 0001694426 us-gaap:LineOfCreditMember 2019-12-31 0001694426 dk:DelekTermLoanCreditFacilityMember 2019-12-31 0001694426 dk:DklRevolverMember 2019-12-31 0001694426 dk:ReliantBankRevolverMember 2019-12-31 0001694426 us-gaap:RevolvingCreditFacilityMember dk:ReliantBankRevolverMember us-gaap:LineOfCreditMember 2018-12-31 0001694426 dk:HapoalimTermLoanMember us-gaap:SecuredDebtMember 2018-12-31 0001694426 dk:PromissoryNotesMember 2018-12-31 0001694426 us-gaap:RevolvingCreditFacilityMember dk:DklRevolverMember us-gaap:LineOfCreditMember 2018-12-31 0001694426 dk:HapoalimTermLoanMember us-gaap:SecuredDebtMember 2019-12-31 0001694426 us-gaap:RevolvingCreditFacilityMember us-gaap:LineOfCreditMember 2018-12-31 0001694426 us-gaap:CommodityContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2018-12-31 0001694426 us-gaap:NondesignatedMember us-gaap:CostOfSalesMember 2019-01-01 2019-12-31 0001694426 us-gaap:CommodityContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2019-12-31 0001694426 us-gaap:NondesignatedMember us-gaap:CostOfSalesMember 2018-01-01 2018-12-31 0001694426 us-gaap:InterestRateSwapMember 2019-12-31 0001694426 us-gaap:CommodityContractMember 2019-12-31 0001694426 us-gaap:CommodityContractMember us-gaap:CostOfSalesMember 2018-01-01 2018-12-31 0001694426 dk:AlonRetailCreditFacilitiesMember us-gaap:SecuredDebtMember 2019-12-31 0001694426 us-gaap:CommodityContractMember us-gaap:CostOfSalesMember 2019-01-01 2019-12-31 0001694426 us-gaap:OtherCurrentAssetsMember dk:RINCommitmentContractsMember us-gaap:NondesignatedMember 2019-12-31 0001694426 us-gaap:CommodityContractMember 2018-12-31 0001694426 us-gaap:InterestRateSwapMember us-gaap:InterestExpenseMember 2019-01-01 2019-12-31 0001694426 us-gaap:NondesignatedMember us-gaap:CostOfSalesMember 2017-01-01 2017-12-31 0001694426 dk:RINCommitmentContractsMember 2018-12-31 0001694426 us-gaap:CommodityContractMember us-gaap:CostOfSalesMember 2017-01-01 2017-12-31 0001694426 us-gaap:OtherCurrentLiabilitiesMember us-gaap:CommodityContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2019-12-31 0001694426 us-gaap:OtherCurrentAssetsMember dk:RINCommitmentContractsMember us-gaap:NondesignatedMember 2018-12-31 0001694426 us-gaap:OtherCurrentLiabilitiesMember dk:RINCommitmentContractsMember us-gaap:NondesignatedMember 2019-12-31 0001694426 us-gaap:OtherNoncurrentLiabilitiesMember us-gaap:CommodityContractMember us-gaap:NondesignatedMember 2018-12-31 0001694426 us-gaap:OtherCurrentLiabilitiesMember dk:RINCommitmentContractsMember us-gaap:NondesignatedMember 2018-12-31 0001694426 us-gaap:OtherNoncurrentLiabilitiesMember us-gaap:CommodityContractMember us-gaap:NondesignatedMember 2019-12-31 0001694426 us-gaap:OtherNoncurrentLiabilitiesMember us-gaap:InterestRateContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2019-12-31 0001694426 us-gaap:OtherCurrentAssetsMember us-gaap:CommodityContractMember us-gaap:NondesignatedMember 2018-12-31 0001694426 us-gaap:OtherNoncurrentAssetsMember us-gaap:CommodityContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2018-12-31 0001694426 us-gaap:OtherCurrentLiabilitiesMember us-gaap:CommodityContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2018-12-31 0001694426 us-gaap:OtherCurrentAssetsMember us-gaap:CommodityContractMember us-gaap:NondesignatedMember 2019-12-31 0001694426 us-gaap:OtherNoncurrentAssetsMember us-gaap:CommodityContractMember us-gaap:NondesignatedMember 2019-12-31 0001694426 us-gaap:OtherNoncurrentAssetsMember us-gaap:CommodityContractMember us-gaap:NondesignatedMember 2018-12-31 0001694426 us-gaap:OtherNoncurrentAssetsMember us-gaap:CommodityContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2019-12-31 0001694426 us-gaap:OtherCurrentAssetsMember us-gaap:CommodityContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2018-12-31 0001694426 us-gaap:OtherCurrentAssetsMember us-gaap:CommodityContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2019-12-31 0001694426 us-gaap:OtherCurrentLiabilitiesMember us-gaap:CommodityContractMember us-gaap:NondesignatedMember 2018-12-31 0001694426 us-gaap:OtherNoncurrentLiabilitiesMember us-gaap:InterestRateContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2018-12-31 0001694426 us-gaap:OtherCurrentLiabilitiesMember us-gaap:CommodityContractMember us-gaap:NondesignatedMember 2019-12-31 0001694426 us-gaap:ForwardContractsMember 2018-01-01 2018-12-31 0001694426 us-gaap:ForwardContractsMember 2019-01-01 2019-12-31 0001694426 us-gaap:CommodityContractMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:CostOfSalesMember 2017-01-01 2017-12-31 0001694426 us-gaap:CommodityContractMember us-gaap:NondesignatedMember us-gaap:CostOfSalesMember 2018-01-01 2018-12-31 0001694426 us-gaap:CommodityContractMember us-gaap:NondesignatedMember us-gaap:OtherOperatingIncomeExpenseMember 2018-01-01 2018-12-31 0001694426 us-gaap:CommodityContractMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:CostOfSalesMember 2018-01-01 2018-12-31 0001694426 us-gaap:CommodityContractMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:CostOfSalesMember 2019-01-01 2019-12-31 0001694426 us-gaap:CommodityContractMember us-gaap:NondesignatedMember us-gaap:OtherOperatingIncomeExpenseMember 2019-01-01 2019-12-31 0001694426 us-gaap:CommodityContractMember us-gaap:NondesignatedMember us-gaap:CostOfSalesMember 2019-01-01 2019-12-31 0001694426 us-gaap:CommodityContractMember us-gaap:NondesignatedMember us-gaap:OtherOperatingIncomeExpenseMember 2017-01-01 2017-12-31 0001694426 us-gaap:CommodityContractMember us-gaap:NondesignatedMember us-gaap:CostOfSalesMember 2017-01-01 2017-12-31 0001694426 us-gaap:CommodityContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2019-01-01 2019-12-31 0001694426 us-gaap:CommodityContractMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2018-12-31 0001694426 dk:RINCommitmentContractsMember us-gaap:FairValueMeasurementsRecurringMember 2018-12-31 0001694426 dk:RINCommitmentContractsMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2018-12-31 0001694426 dk:RINsObligationMember us-gaap:FairValueMeasurementsRecurringMember 2018-12-31 0001694426 us-gaap:CommodityContractMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2018-12-31 0001694426 us-gaap:CommodityContractMember us-gaap:FairValueMeasurementsRecurringMember 2018-12-31 0001694426 dk:RINsObligationMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2018-12-31 0001694426 dk:J.AronStepoutLiabilityMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2018-12-31 0001694426 dk:RINCommitmentContractsMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2018-12-31 0001694426 dk:J.AronStepoutLiabilityMember us-gaap:FairValueMeasurementsRecurringMember 2018-12-31 0001694426 dk:RINsObligationMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2018-12-31 0001694426 us-gaap:InterestRateContractMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2018-12-31 0001694426 us-gaap:FairValueMeasurementsRecurringMember 2018-12-31 0001694426 dk:J.AronStepoutLiabilityMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2018-12-31 0001694426 dk:RINsObligationMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2018-12-31 0001694426 dk:RINCommitmentContractsMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2018-12-31 0001694426 us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2018-12-31 0001694426 dk:J.AronStepoutLiabilityMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2018-12-31 0001694426 us-gaap:InterestRateContractMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2018-12-31 0001694426 us-gaap:CommodityContractMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2018-12-31 0001694426 us-gaap:InterestRateContractMember us-gaap:FairValueMeasurementsRecurringMember 2018-12-31 0001694426 us-gaap:InterestRateContractMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2018-12-31 0001694426 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2018-12-31 0001694426 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2018-12-31 0001694426 us-gaap:CommodityContractMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001694426 us-gaap:CommoditiesInvestmentMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001694426 dk:RINCommitmentContractsMember us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001694426 dk:RINCommitmentContractsMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001694426 us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001694426 us-gaap:CommoditiesInvestmentMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001694426 dk:J.AronStepoutLiabilityMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001694426 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001694426 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001694426 dk:EnvironmentalCreditsObligationMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001694426 dk:RINsObligationMember us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001694426 us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001694426 dk:EnvironmentalCreditsObligationMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001694426 dk:RINCommitmentContractsMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001694426 dk:RINCommitmentContractsMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001694426 dk:EnvironmentalCreditsObligationMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001694426 dk:RINsObligationMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001694426 us-gaap:CommodityContractMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001694426 dk:J.AronStepoutLiabilityMember us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001694426 us-gaap:CommodityContractMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001694426 dk:J.AronStepoutLiabilityMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001694426 us-gaap:CommodityContractMember us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001694426 dk:RINsObligationMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001694426 dk:J.AronStepoutLiabilityMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001694426 us-gaap:CommoditiesInvestmentMember us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001694426 dk:EnvironmentalCreditsObligationMember us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001694426 us-gaap:CommoditiesInvestmentMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001694426 dk:RINsObligationMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001694426 dk:TenTexLitigationMember 2019-01-01 2019-12-31 0001694426 dk:CaliforniaDiscontinuedEntitiesAltAirMember 2019-01-01 2019-12-31 0001694426 srt:MaximumMember dk:AlonUSAEnergyInc.Member 2019-12-31 0001694426 dk:AlonUSAEnergyInc.Member dk:BigSpringRefineryMember 2019-01-01 2019-12-31 0001694426 us-gaap:OtherCurrentLiabilitiesMember dk:MagnoliaStationSpillMember dk:MagnoliaStationSpillMember dk:StateofArkansasMember 2019-11-20 2019-11-20 0001694426 us-gaap:LetterOfCreditMember 2019-12-31 0001694426 2018-11-05 0001694426 dk:ElDoradoRefineryPriorOwnerCaseMember us-gaap:OtherCurrentLiabilitiesMember 2019-12-31 0001694426 us-gaap:OtherCurrentLiabilitiesMember dk:MagnoliaStationSpillMember dk:MagnoliaStationSpillMember 2018-12-31 0001694426 srt:MinimumMember dk:AlonUSAEnergyInc.Member 2019-12-31 0001694426 us-gaap:OtherCurrentLiabilitiesMember dk:MagnoliaStationSpillMember dk:MagnoliaStationSpillMember dk:DepartmentofJusticeMember 2019-01-01 2019-12-31 0001694426 dk:ElDoradoRefineryPriorOwnerCaseMember 2019-12-31 0001694426 dk:ElDoradoRefineryPriorOwnerCaseMember 2019-01-01 2019-12-31 0001694426 dk:TenTexLitigationMember 2018-06-30 0001694426 us-gaap:StateAndLocalJurisdictionMember 2019-12-31 0001694426 srt:RestatementAdjustmentMember us-gaap:AccountingStandardsUpdate201616Member 2018-01-01 0001694426 2018-01-01 2018-01-01 0001694426 dk:RelatedPartyTransactionsMember us-gaap:EquityMethodInvesteeMember 2017-01-01 2017-12-31 0001694426 dk:RelatedPartyTransactionsMember us-gaap:EquityMethodInvesteeMember 2018-01-01 2018-12-31 0001694426 dk:RelatedPartyTransactionsMember us-gaap:EquityMethodInvesteeMember 2019-01-01 2019-12-31 0001694426 dk:CorporateReconcilingItemsAndEliminationsMember 2019-12-31 0001694426 dk:CorporateReconcilingItemsAndEliminationsMember 2019-01-01 2019-12-31 0001694426 dk:CorporateReconcilingItemsAndEliminationsMember 2018-12-31 0001694426 dk:CorporateReconcilingItemsAndEliminationsMember 2018-01-01 2018-12-31 0001694426 us-gaap:LandMember 2018-12-31 0001694426 dk:PipelinestanksandterminalsMember 2019-12-31 0001694426 us-gaap:BuildingAndBuildingImprovementsMember 2019-12-31 0001694426 dk:RefineryMachineryAndEquipmentMember 2019-12-31 0001694426 dk:RefineryTurnaroundCostsMember 2019-12-31 0001694426 us-gaap:LandMember 2019-12-31 0001694426 us-gaap:OtherMachineryAndEquipmentMember 2019-12-31 0001694426 us-gaap:OtherMachineryAndEquipmentMember 2018-12-31 0001694426 us-gaap:ConstructionInProgressMember 2018-12-31 0001694426 us-gaap:ConstructionInProgressMember 2019-12-31 0001694426 us-gaap:BuildingAndBuildingImprovementsMember 2018-12-31 0001694426 dk:RefineryMachineryAndEquipmentMember 2018-12-31 0001694426 dk:PipelinestanksandterminalsMember 2018-12-31 0001694426 dk:SiteimprovementsMember 2018-12-31 0001694426 dk:RefineryTurnaroundCostsMember 2018-12-31 0001694426 dk:SiteimprovementsMember 2019-12-31 0001694426 srt:ConsolidationEliminationsMember 2016-12-31 0001694426 us-gaap:OperatingSegmentsMember dk:RefiningMember 2017-12-31 0001694426 srt:ConsolidationEliminationsMember 2017-01-01 2017-12-31 0001694426 srt:ConsolidationEliminationsMember 2018-01-01 2018-12-31 0001694426 us-gaap:OperatingSegmentsMember us-gaap:RetailMember 2016-12-31 0001694426 us-gaap:OperatingSegmentsMember dk:LogisticsMember 2016-12-31 0001694426 us-gaap:OperatingSegmentsMember dk:LogisticsMember 2017-12-31 0001694426 srt:ConsolidationEliminationsMember 2019-01-01 2019-12-31 0001694426 us-gaap:OperatingSegmentsMember dk:RefiningMember 2016-12-31 0001694426 srt:ConsolidationEliminationsMember 2019-12-31 0001694426 srt:ConsolidationEliminationsMember 2018-12-31 0001694426 srt:ConsolidationEliminationsMember 2017-12-31 0001694426 us-gaap:OperatingSegmentsMember us-gaap:RetailMember 2017-12-31 0001694426 dk:FuelTradeNameMember 2018-12-31 0001694426 dk:BelowMarketLeasesMember 2018-12-31 0001694426 dk:FuelSupplyAgreementMember 2018-12-31 0001694426 dk:LinespacehistoryMember 2018-12-31 0001694426 dk:RefineryPermitsMember 2018-12-31 0001694426 dk:RightsofWayMember 2018-12-31 0001694426 dk:LiquorLicensesMember 2018-12-31 0001694426 dk:FuelTradeNameMember 2018-01-01 2018-12-31 0001694426 dk:FuelSupplyAgreementMember 2018-01-01 2018-12-31 0001694426 dk:DepreciationandAmortizationExpenseAdjustmentMember 2018-01-01 2018-12-31 0001694426 dk:DepreciationandAmortizationExpenseAdjustmentMember 2017-01-01 2017-12-31 0001694426 dk:DepreciationandAmortizationExpenseAdjustmentMember 2019-01-01 2019-12-31 0001694426 dk:FuelSupplyAgreementMember 2019-01-01 2019-12-31 0001694426 dk:FuelSupplyAgreementMember 2019-12-31 0001694426 dk:RightsofWayMember 2019-12-31 0001694426 dk:LinespacehistoryMember 2019-12-31 0001694426 dk:RefineryPermitsMember 2019-12-31 0001694426 dk:LiquorLicensesMember 2019-12-31 0001694426 dk:FuelTradeNameMember 2019-12-31 0001694426 dk:FuelTradeNameMember 2019-01-01 2019-12-31 0001694426 srt:MaximumMember dk:BelowMarketLeasesMember 2018-01-01 2018-12-31 0001694426 srt:MinimumMember dk:BelowMarketLeasesMember 2018-01-01 2018-12-31 0001694426 dk:A2019GrantsGradedVestingMember 2019-01-01 2019-12-31 0001694426 dk:A2018GrantsGradedVestingMember 2019-01-01 2019-12-31 0001694426 dk:A2017GrantsGradedVestingMember 2019-01-01 2019-12-31 0001694426 dk:DelekUSHoldingsInc.2016LongTermIncentivePlanMember 2016-05-05 0001694426 dk:DelekUS2006and2016LongTermIncentivePlanMember 2019-01-01 2019-12-31 0001694426 dk:DelekUSHoldingsInc.2016LongTermIncentivePlanMember 2018-05-08 0001694426 us-gaap:GeneralAndAdministrativeExpenseMember dk:DelekUS2006and2016LongTermIncentivePlanMember 2017-01-01 2017-12-31 0001694426 us-gaap:GeneralAndAdministrativeExpenseMember dk:DelekUS2006and2016LongTermIncentivePlanMember 2018-01-01 2018-12-31 0001694426 us-gaap:GeneralAndAdministrativeExpenseMember dk:DelekUS2006and2016LongTermIncentivePlanMember 2019-01-01 2019-12-31 0001694426 us-gaap:GeneralAndAdministrativeExpenseMember dk:DelekLogistics2012LongTermIncentivePlanMember 2019-01-01 2019-12-31 0001694426 us-gaap:GeneralAndAdministrativeExpenseMember dk:DelekLogistics2012LongTermIncentivePlanMember 2018-01-01 2018-12-31 0001694426 srt:MaximumMember us-gaap:RestrictedStockUnitsRSUMember 2019-01-01 2019-12-31 0001694426 dk:DelekLogistics2012LongTermIncentivePlanMember 2019-12-31 0001694426 dk:DelekLogistics2012LongTermIncentivePlanMember 2019-01-01 2019-12-31 0001694426 dk:DelekUs2006LongTermIncentivePlanMember 2019-12-31 0001694426 dk:DelekUS2006and2016LongTermIncentivePlanMember 2019-12-31 0001694426 us-gaap:GeneralAndAdministrativeExpenseMember dk:DelekLogistics2012LongTermIncentivePlanMember 2017-01-01 2017-12-31 0001694426 dk:A2018GrantsMember us-gaap:PerformanceSharesMember 2019-01-01 2019-12-31 0001694426 dk:A2019GrantsMember us-gaap:PerformanceSharesMember 2019-01-01 2019-12-31 0001694426 dk:A2017GrantsMember us-gaap:PerformanceSharesMember 2019-01-01 2019-12-31 0001694426 srt:MinimumMember dk:A2017GrantsGradedVestingMember 2019-01-01 2019-12-31 0001694426 srt:MinimumMember dk:A2019GrantsGradedVestingMember 2019-01-01 2019-12-31 0001694426 srt:MaximumMember dk:A2017GrantsGradedVestingMember 2019-01-01 2019-12-31 0001694426 srt:MaximumMember dk:A2018GrantsGradedVestingMember 2019-01-01 2019-12-31 0001694426 srt:MaximumMember dk:A2019GrantsGradedVestingMember 2019-01-01 2019-12-31 0001694426 srt:MinimumMember dk:A2018GrantsGradedVestingMember 2019-01-01 2019-12-31 0001694426 us-gaap:PerformanceSharesMember 2019-01-01 2019-12-31 0001694426 srt:MinimumMember us-gaap:RestrictedStockUnitsRSUMember 2019-01-01 2019-12-31 0001694426 srt:MinimumMember dk:A2017GrantsMember us-gaap:PerformanceSharesMember 2019-01-01 2019-12-31 0001694426 srt:MinimumMember dk:A2019GrantsMember us-gaap:PerformanceSharesMember 2019-01-01 2019-12-31 0001694426 srt:MaximumMember dk:A2019GrantsMember us-gaap:PerformanceSharesMember 2019-01-01 2019-12-31 0001694426 srt:MaximumMember dk:A2017GrantsMember us-gaap:PerformanceSharesMember 2019-01-01 2019-12-31 0001694426 srt:MinimumMember dk:A2018GrantsMember us-gaap:PerformanceSharesMember 2019-01-01 2019-12-31 0001694426 srt:MaximumMember dk:A2018GrantsMember us-gaap:PerformanceSharesMember 2019-01-01 2019-12-31 0001694426 us-gaap:DefinedBenefitPlanEquitySecuritiesMember 2018-12-31 0001694426 us-gaap:DefinedBenefitPlanRealEstateMember 2019-12-31 0001694426 us-gaap:DefinedBenefitPlanEquitySecuritiesMember 2019-12-31 0001694426 us-gaap:DefinedBenefitPlanDebtSecurityMember 2018-12-31 0001694426 us-gaap:DefinedBenefitPlanRealEstateMember 2018-12-31 0001694426 us-gaap:DefinedBenefitPlanDebtSecurityMember 2019-12-31 0001694426 dk:UnionAgreementMember 2019-12-31 0001694426 dk:TylerRefineryMember 2019-01-01 2019-12-31 0001694426 dk:ElDoradoRefineryMember 2019-01-01 2019-12-31 0001694426 dk:BigSpringRefineryMember 2019-01-01 2019-12-31 0001694426 us-gaap:DefinedBenefitPlanRealEstateMember us-gaap:FairValueInputsLevel2Member 2018-12-31 0001694426 us-gaap:DefinedBenefitPlanRealEstateMember us-gaap:FairValueInputsLevel3Member 2019-12-31 0001694426 us-gaap:FairValueInputsLevel2Member 2018-12-31 0001694426 us-gaap:FairValueInputsLevel1Member 2019-12-31 0001694426 dk:PreferredDebtSecuritiesMember us-gaap:FairValueInputsLevel3Member 2018-12-31 0001694426 us-gaap:DefinedBenefitPlanRealEstateMember us-gaap:FairValueInputsLevel1Member 2019-12-31 0001694426 dk:PreferredDebtSecuritiesMember us-gaap:FairValueInputsLevel2Member 2018-12-31 0001694426 us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMember 2019-12-31 0001694426 us-gaap:BondsMember us-gaap:FairValueInputsLevel1Member 2019-12-31 0001694426 us-gaap:BondsMember 2018-12-31 0001694426 us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMember us-gaap:FairValueInputsLevel2Member 2019-12-31 0001694426 us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMember us-gaap:FairValueInputsLevel2Member 2018-12-31 0001694426 us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMember us-gaap:FairValueInputsLevel1Member 2019-12-31 0001694426 us-gaap:DefinedBenefitPlanEquitySecuritiesUsMember us-gaap:FairValueInputsLevel3Member 2019-12-31 0001694426 us-gaap:BondsMember us-gaap:FairValueInputsLevel2Member 2019-12-31 0001694426 us-gaap:DefinedBenefitPlanEquitySecuritiesUsMember us-gaap:FairValueInputsLevel1Member 2018-12-31 0001694426 dk:PreferredDebtSecuritiesMember 2018-12-31 0001694426 us-gaap:DefinedBenefitPlanEquitySecuritiesUsMember us-gaap:FairValueInputsLevel1Member 2019-12-31 0001694426 us-gaap:BondsMember us-gaap:FairValueInputsLevel3Member 2019-12-31 0001694426 dk:PreferredDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2019-12-31 0001694426 us-gaap:DefinedBenefitPlanEquitySecuritiesUsMember us-gaap:FairValueInputsLevel2Member 2019-12-31 0001694426 us-gaap:BondsMember us-gaap:FairValueInputsLevel3Member 2018-12-31 0001694426 us-gaap:DefinedBenefitPlanEquitySecuritiesUsMember us-gaap:FairValueInputsLevel3Member 2018-12-31 0001694426 us-gaap:DefinedBenefitPlanRealEstateMember us-gaap:FairValueInputsLevel2Member 2019-12-31 0001694426 dk:PreferredDebtSecuritiesMember 2019-12-31 0001694426 us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMember us-gaap:FairValueInputsLevel3Member 2018-12-31 0001694426 us-gaap:FairValueInputsLevel3Member 2019-12-31 0001694426 us-gaap:DefinedBenefitPlanRealEstateMember us-gaap:FairValueInputsLevel1Member 2018-12-31 0001694426 us-gaap:BondsMember 2019-12-31 0001694426 us-gaap:DefinedBenefitPlanEquitySecuritiesUsMember 2018-12-31 0001694426 dk:PreferredDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2018-12-31 0001694426 dk:PreferredDebtSecuritiesMember us-gaap:FairValueInputsLevel2Member 2019-12-31 0001694426 us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMember 2018-12-31 0001694426 us-gaap:FairValueInputsLevel3Member 2018-12-31 0001694426 us-gaap:FairValueInputsLevel1Member 2018-12-31 0001694426 us-gaap:BondsMember us-gaap:FairValueInputsLevel1Member 2018-12-31 0001694426 us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMember us-gaap:FairValueInputsLevel1Member 2018-12-31 0001694426 us-gaap:DefinedBenefitPlanEquitySecuritiesUsMember 2019-12-31 0001694426 us-gaap:DefinedBenefitPlanEquitySecuritiesUsMember us-gaap:FairValueInputsLevel2Member 2018-12-31 0001694426 us-gaap:BondsMember us-gaap:FairValueInputsLevel2Member 2018-12-31 0001694426 us-gaap:FairValueInputsLevel2Member 2019-12-31 0001694426 us-gaap:DefinedBenefitPlanRealEstateMember us-gaap:FairValueInputsLevel3Member 2018-12-31 0001694426 us-gaap:DefinedBenefitPlanEquitySecuritiesNonUsMember us-gaap:FairValueInputsLevel3Member 2019-12-31 0001694426 dk:PreferredDebtSecuritiesMember us-gaap:FairValueInputsLevel3Member 2019-12-31 0001694426 2019-07-01 2019-09-30 0001694426 2019-10-01 2019-12-31 0001694426 2019-04-01 2019-06-30 0001694426 2019-01-01 2019-03-31 0001694426 2018-07-01 2018-09-30 0001694426 2018-04-01 2018-06-30 0001694426 2018-01-01 2018-03-31 0001694426 2019-01-01 2019-09-30 0001694426 srt:MaximumMember 2019-12-31 0001694426 srt:MinimumMember 2019-12-31 0001694426 us-gaap:SubsequentEventMember 2020-02-24 2020-02-24 xbrli:pure dk:segment utreg:bbl xbrli:pure dk:customer xbrli:shares dk:asphalt_terminal iso4217:USD iso4217:USD xbrli:shares dk:joint_venture dk:store iso4217:CAD utreg:bbl dk:agreement dk:rins utreg:MMBTU

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-K

(Mark One)

OR

Commission file number 001-38142

(Former name, former address and former fiscal year, if changed since last report)

Securities registered pursuant to Section 12(b) of the Act:

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ☑ No ☐

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.  Yes ☐ No ☑

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.  Yes ☑ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (Section 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).  Yes  ☑   No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and "emerging growth company" in Rule 12b-2 of the Exchange Act.

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).  Yes ☐ No ☑

The aggregate market value of the common stock held by non-affiliates as of June 30, 2019 was approximately $3,646,155,246, based upon the closing sale price of the registrant's common stock on the New York Stock Exchange on that date. For purposes of this calculation only, all directors and officers subject to Section 16(b) of the Securities Exchange Act of 1934 are deemed to be affiliates.

At February 21, 2020, there were 73,414,200 shares of the registrant's common stock, $.01 par value, outstanding (excluding securities held by, or for the account of, the Company or its subsidiaries).

Documents incorporated by reference

Portions of the registrant's definitive Proxy Statement to be delivered to stockholders in connection with the 2020 Annual Meeting of Stockholders, which will be filed with the Securities and Exchange Commission within 120 days after December 31, 2019, are incorporated by reference into Part III of this Annual Report on Form 10-K.

Delek US Holdings, Inc.

Annual Report on Form 10-K

For the Annual Period Ending December 31, 2019

Delek US Holdings, Inc. is a registrant pursuant to the Securities Act of 1933 and is listed on the New York Stock Exchange ("NYSE") under the ticker symbol "DK." Effective July 1, 2017 (the "Effective Time"), we acquired the outstanding common stock of Alon USA Energy, Inc. ("Alon") (the "Delek/Alon Merger", as further discussed in Note 3 of the consolidated financial statements included in Item 8, Financial Statements and Supplementary Data, of this Annual Report on Form 10-K), resulting in a new post-combination consolidated registrant renamed as Delek US Holdings, Inc. (“New Delek”), with Alon and the previous Delek US Holdings, Inc. (“Old Delek”) surviving as wholly-owned subsidiaries. New Delek is the successor issuer to Old Delek and Alon pursuant to Rule 12g-3(c) under the Securities Exchange Act of 1934, as amended (the "Exchange Act").

Unless otherwise noted or the context requires otherwise, the disclosures and financial information included in this report for the periods prior to July 1, 2017 reflect that of Old Delek, and the disclosures and financial information included in this report for the periods beginning July 1, 2017 reflect that of New Delek. The terms "we," "our," "us," "Delek" and the "Company" are used in this report to refer to Old Delek and its consolidated subsidiaries for the periods prior to July 1, 2017, and New Delek and its consolidated subsidiaries for the periods on or after July 1, 2017, unless otherwise noted. Our business consists of three operating segments: refining, logistics and retail.

As of December 31, 2019, we owned a 61.4% limited partner interest in Delek Logistics Partners, LP ("Delek Logistics"), a publicly-traded master limited partnership that we formed in April 2012, and a 94.6% interest in Delek Logistics GP, LLC ("Logistics GP"), which owns the entire 2.0% general partner interest in Delek Logistics. By virtue of the Delek/Alon Merger, we acquired an 81.6% limited partner interest in Alon USA Partners, LP (the "Alon Partnership"), then a publicly-traded limited partnership, as well as 100% interest in Alon USA Partners GP, LLC (the “Alon General Partner”). The Alon General Partner owns 100% of the general partner interest in the Alon Partnership, which is a non-economic interest. On February 7, 2018, we acquired the remaining outstanding units in the Alon Partnership.

Statements in this Annual Report on Form 10-K, other than purely historical information, including statements regarding our plans, strategies, objectives, beliefs, expectations and intentions are forward-looking statements. These forward-looking statements generally are identified by the words "may," "will," "should," "could," "would," "predicts," "intends," "believes," "expects," "plans," "scheduled," "goal," "anticipates," "estimates" and similar expressions. Forward-looking statements are based on current expectations and assumptions that are subject to risks and uncertainties, including those discussed below and in Item 1A, Risk Factors, which may cause actual results to differ materially from the forward-looking statements. See also "Forward-Looking Statements" included in Item 7, Management's Discussion and Analysis of Financial Condition and Results of Operations, of this Annual Report on Form 10-K.

See the “Glossary of Terms” beginning on page 4 of this Annual Report on Form 10-K for definitions of certain business and industry terms used herein.

Available Information

Our Internet website address is www.DelekUS.com. Information contained on our website is not part of this Annual Report on Form 10-K. Our reports, proxy and information statements, and any amendments to such documents are filed electronically with the Securities and Exchange Commission (“SEC”) and are available on our Internet website in the “Investor Relations” section, free of charge, as soon as reasonably practicable after we file or furnish such material to the SEC. We also post our Governance Guidelines, Code of Business Conduct & Ethics and the charters of our Board of Directors’ committees in the “Corporate Governance” section of our website, accessible by navigating to the “About Us” section on our Internet website. We will provide any of these documents to any stockholder that makes a written request to the Secretary, Delek US Holdings, Inc., 7102 Commerce Way, Brentwood, Tennessee 37027.

Glossary of Terms

The following are definitions of certain industry terms used in this Annual Report on Form 10-K:

Alkylation Unit - A refinery unit utilizing an acid catalyst to combine smaller hydrocarbon molecules to form larger molecules in the gasoline boiling range to produce a high octane gasoline blendstock, which is referred to as alkylate.

Barrel - A unit of volumetric measurement equivalent to 42 U.S. gallons.

Biodiesel - A renewable fuel produced from vegetable oils or animal fats that can be blended with petroleum-derived diesel to produce biodiesel blends for use in diesel engines. Pure biodiesel is referred to as B100, whereas blends of biodiesel are referenced by how much biodiesel is in the blend (e.g., a B5 blend contains five volume percent biodiesel and 95 volume percent ULSD).

Blendstocks - Various products or intermediate streams that are combined with other components of similar type and distillation range to produce finished gasoline, diesel fuel or other refined products. Blendstocks may include natural gasoline, hydrotreated Fluid Catalytic Cracking Unit gasoline, alkylate, ethanol, reformate, butane, diesel, biodiesel, kerosene, light cycle oil or slurry, among others.

Bpd/bpd - Barrels per calendar day.

Brent Crude (Brent) - A light, sweet crude oil, though not as light as WTI. Brent is the leading global price benchmark for Atlantic basin crude oil.

CBOB - Motor gasoline blending components intended for blending with oxygenates, such as ethanol, to produce finished conventional motor gasoline.

CERCLA - Comprehensive Environmental Response, Compensation and Liability Act.

Colonial Pipeline - A pipeline owned and operated by the Colonial Pipeline Company that originates near Houston, Texas and terminates near New York, New York, connecting the U.S. refinery region of the Gulf Coast with customers throughout the southern and eastern United States.

Complexity Index - A measure of secondary conversion capacity of a refinery relative to its primary distillation capacity used to quantify and rank the complexity of various refineries. Generally, more complex refineries have a higher index number.

Contribution margin - Net revenues less costs of materials and other and operating expenses, excluding depreciation and amortization.

Crack spread - The crack spread is a measure of the difference between market prices for crude oil and refined products and is commonly used proxy within the industry to estimate or identify trends in refining margins.

Crude Distillation Capacity, Nameplate Capacity or Production Capacity - The maximum sustainable capacity for a refinery or process unit for a given feedstock quality and severity level, measured in barrels per day.

Cushing - Cushing, Oklahoma.

Delayed Coking Unit (Coker) - A refinery unit that processes ("cracks") heavy oils, such as the bottom cuts of crude oil from the crude or vacuum units, to produce blendstocks for light transportation fuels or feedstocks for other units and petroleum coke.

Direct operating expenses - Operating expenses attributed to the respective segment.

EISA - Energy Independence and Security Act of 2007.

Enterprise Pipeline System - A major product pipeline transport system that reaches from the Gulf Coast into the northeastern United States.

EPA - The Environmental Protection Agency.

Ethanol - An oxygenated blendstock that is blended with sub-grade (CBOB) or conventional gasoline to produce a finished gasoline.

E-10 - A 90% gasoline-10% ethanol blend.

E-15 - An 85% gasoline-15% ethanol blend.

E-85 - A blend of gasoline and 70%-85% ethanol.

Feedstocks - Crude oil and petroleum products used as inputs in refining processes.

FERC - The Federal Energy Regulatory Commission.

FIFO - First-in, first-out inventory accounting method.

Fluid Catalytic Cracking Unit or FCC Unit - A refinery unit that uses fluidized catalyst at high temperatures to crack large hydrocarbon molecules into smaller, higher-valued molecules (LPG, gasoline, LCO, etc.).

Gulf Coast 2-1-1 crack spread - A crack spread, expressed in dollars per barrel, reflecting the approximate gross margin resulting from processing, or "cracking", one barrel of crude oil into one-half barrel of gasoline and one-half barrel of high sulfur diesel, utilizing the market prices of LLS crude oil, Gulf Coast Pipeline conventional gasoline and Gulf Coast Pipeline No. 2 Heating Oil.

Gulf Coast 3-2-1 crack spread - A crack spread, expressed in dollars per barrel, reflecting the approximate gross margin resulting from processing, or "cracking", one barrel of crude oil into two-thirds barrel of gasoline and one-third barrel of ultra-low sulfur diesel, utilizing the market prices of WTI crude oil, Gulf Coast Pipeline conventional gasoline and Gulf Coast Pipeline ultra-low sulfur diesel.

Gulf Coast 5-3-2 crack spread - A crack spread, expressed in dollars per barrel, reflecting the approximate gross margin resulting from processing, or "cracking", one barrel of crude oil into three-fifths barrel of gasoline and two-fifths barrel of high sulfur diesel, utilizing the market prices of WTI crude oil, Gulf Coast Pipeline CBOB and Gulf Coast Pipeline No. 2 Heating Oil.

Gulf Coast Pipeline CBOB - A grade of gasoline blendstock that must be blended with 10% biofuels in order to be marketed as Regular Unleaded at retail locations.

Gulf Coast Pipeline No. 2 Heating Oil - A petroleum distillate that can be used as either a diesel fuel or a fuel oil. This is the standard by which other Gulf Coast distillate products (such as ultra-low sulfur diesel) are priced.

Gulf Coast Region - Commonly referred to as PADD III, includes the states of Texas, Arkansas, Louisiana, Mississippi, Alabama and New Mexico.

HLS - Heavy Louisiana Sweet crude oil; typical API gravity of 33° and sulfur content of 0.35%.

Hydrotreating Unit - A refinery unit that removes sulfur and other contaminants from hydrocarbons at high temperatures and moderate to high pressure in the presence of catalysts and hydrogen. When used to process fuels, this unit reduces the sulfur dioxide emissions from these fuels.

Isomerization Unit - A refinery unit altering the arrangement of a molecule in the presence of a catalyst and hydrogen to produce a more valuable molecule, typically used to increase the octane of gasoline blendstocks.

Jobbers - Retail stations owned by third parties that sell products purchased from or through us.

LIFO - Last-in, first-out inventory accounting method.

Light/Medium/Heavy Crude Oil - Terms used to describe the relative densities of crude oil, normally represented by their API gravities. Light crude oils (those having relatively high API gravities) may be refined into a greater number of valuable products and are typically more expensive than a heavier crude oil.

LLS - Louisiana Light Sweet crude oil; typical API gravity of 38° and sulfur content of 0.34%.

LPG - Liquefied petroleum gas.

LSR - Light straight run naphtha.

Mid-Continent Region - Commonly referred to as PADD II, includes the states of North Dakota, South Dakota, Nebraska, Kansas, Oklahoma, Minnesota, Iowa, Missouri, Wisconsin, Illinois, Michigan, Indiana, Ohio, Kentucky and Tennessee.

Midland - Midland, Texas.

MMBTU - One Million British Thermal Units.

MSCF/d - Abbreviation for a thousand standard cubic feet per day, a common measure for volume of natural gas.

Naphtha - A hydrocarbon fraction that is used as a gasoline blending component, a feedstock for reforming and as a petrochemical feedstock.

New York Mercantile Exchange (NYMEX) - A commodities futures exchange.

NGL - Natural gas liquids.

OSHA - The Occupational Safety and Health Administration.

Petroleum Administration for Defense District (PADD) - Any of five regions in the United States as set forth by the Department of Energy and used throughout the oil industry for geographic reference. Our refineries operate in PADD III, commonly referred to as the Gulf Coast Region.

Petroleum Coke - A coal-like substance produced as a byproduct during the Delayed Coking refining process.

Per barrel of sales - Calculated by dividing the applicable income statement line item (operating margin or operating expenses) by the total barrels sold during the period.

PPB - Parts per billion.

PPM - Parts per million.

RCRA - Resource Conservation and Recovery Act.

Refining margin, refined product margin - Refining margin or refined product margin is measured as the difference between net refining revenues and total refining cost of materials and other and is used as a metric to assess a refinery's product margins against market crack spread trends.

Reforming Unit - A refinery unit that uses high temperature, moderate pressure and catalyst to create petrochemical feedstocks, high octane gasoline blendstocks and hydrogen.

Renewable Fuels Standard 2 (RFS-2) - An EPA regulation promulgated pursuant to the EISA, which requires most refineries to blend increasing amounts of renewable fuels (including biodiesel and ethanol) with refined products.

Renewable Identification Number (RIN) - A renewable fuel credit used to satisfy requirements for blending renewable fuels under RFS-2.

Roofing flux - An asphalt-like product used to make roofing shingles for the housing industry.

Straight run - Product produced off of the crude or vacuum unit and not further processed.

Sweet/Sour crude oil - Terms used to describe the relative sulfur content of crude oil. Sweet crude oil is relatively low in sulfur content; sour crude oil is relatively high in sulfur content. Sweet crude oil requires less processing to remove sulfur and is typically more expensive than sour crude oil.

Throughput - The quantity of crude oil and feedstocks processed through a refinery or a refinery unit.

Turnaround - A periodic shutdown of refinery process units to perform routine maintenance to restore the operation of the equipment to its former level of performance. Turnaround activities normally include cleaning, inspection, refurbishment, and repair and replacement of equipment and piping. It is also common to use turnaround periods to change catalysts or to implement capital project improvements.

Ultra-Low Sulfur Diesel (ULSD) - Diesel fuel produced with a lower sulfur content (15 ppm) to reduce sulfur dioxide emissions. ULSD is the only diesel fuel that may be used for on-road and most other applications in the U.S.

UST - Underground storage tank.

Vacuum Distillation Unit - A refinery unit that distills heavy crude oils under deep vacuum to allow their separation without coking.

West Texas Intermediate Crude Oil (WTI) - A light, sweet crude oil characterized by an API gravity between 38° and 44° and a sulfur content of less than 0.4 wt% that is used as a benchmark for other crude oil.

West Texas Sour Crude Oil (WTS) - A sour crude oil, characterized by an API gravity between 30° and 33° and a sulfur content of approximately 1.28 wt% that is used as a benchmark for other sour crude.