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v2.4.1.9

Commitments and Contingencies Commitments and Contingencies (Details) (USD $) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 31, 2014 | Jan. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2011 | Dec. 31, 2013
Loss Contingencies [Line Items] |  |  |  |  |
2015 |  |  | $ 75,000,000 us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent |  |
2016 |  |  | 69,000,000 us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears |  |
2017 |  |  | 55,000,000 us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears |  |
2018 |  |  | 41,000,000 us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears |  |
2019 |  |  | 34,000,000 us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears |  |
Thereafter |  |  | 129,000,000 us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter |  |
Total future minimum lease payments under operating leases |  |  | 403,000,000 us-gaap_OperatingLeasesFutureMinimumPaymentsDue |  |
Automotive Segment [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Accrual for Environmental Loss Contingencies |  |  | 15,000,000 us-gaap_AccrualForEnvironmentalLossContingencies / us-gaap_StatementBusinessSegmentsAxis = iep_AutomotiveSegmentMember |  | 14,000,000 us-gaap_AccrualForEnvironmentalLossContingencies / us-gaap_StatementBusinessSegmentsAxis = iep_AutomotiveSegmentMember
Gaming Segment [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Tax refund as result of Trop AC tax appeal settlement | 32,000,000 iep_TaxrefundasresultofTropACtaxappealsettlement / us-gaap_StatementBusinessSegmentsAxis = iep_GamingSegmentMember | 50,000,000 iep_TaxrefundasresultofTropACtaxappealsettlement / us-gaap_StatementBusinessSegmentsAxis = iep_GamingSegmentMember |  |  |
Tax to be paid as result of Trop AC tax appeal settlement |  |  | 2,000,000 iep_TaxtobepaidasresultofTropACtaxappealsettlement / us-gaap_StatementBusinessSegmentsAxis = iep_GamingSegmentMember |  |
Real estate tax credits used |  |  | 16,000,000 iep_Realestatetaxcreditsused / us-gaap_StatementBusinessSegmentsAxis = iep_GamingSegmentMember |  |
Professional Fees |  |  | 4,000,000 us-gaap_ProfessionalFees / us-gaap_StatementBusinessSegmentsAxis = iep_GamingSegmentMember |  |
PSC Metals [Member] | Metals Segment [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Accrual for Environmental Loss Contingencies |  |  | 28,000,000 us-gaap_AccrualForEnvironmentalLossContingencies / dei_LegalEntityAxis = iep_PscMetalsMember / us-gaap_StatementBusinessSegmentsAxis = iep_MetalsSegmentMember |  | 29,000,000 us-gaap_AccrualForEnvironmentalLossContingencies / dei_LegalEntityAxis = iep_PscMetalsMember / us-gaap_StatementBusinessSegmentsAxis = iep_MetalsSegmentMember
WPH [Member] | Home Fashion Segment [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Accrual for Environmental Loss Contingencies |  |  | 1,000,000 us-gaap_AccrualForEnvironmentalLossContingencies / dei_LegalEntityAxis = iep_WphMember / us-gaap_StatementBusinessSegmentsAxis = iep_HomeFashionSegmentMember |  | 1,000,000 us-gaap_AccrualForEnvironmentalLossContingencies / dei_LegalEntityAxis = iep_WphMember / us-gaap_StatementBusinessSegmentsAxis = iep_HomeFashionSegmentMember
Federal-Mogul [Member] | Automotive Segment [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Site Contingency, Loss Exposure in Excess of Accrual, Best Estimate |  |  | 40,000,000 us-gaap_SiteContingencyLossExposureInExcessOfAccrualBestEstimate / dei_LegalEntityAxis = iep_FederalMogulMember / us-gaap_StatementBusinessSegmentsAxis = iep_AutomotiveSegmentMember |  |
Asset Retirement Obligation |  |  | 24,000,000 us-gaap_AssetRetirementObligation / dei_LegalEntityAxis = iep_FederalMogulMember / us-gaap_StatementBusinessSegmentsAxis = iep_AutomotiveSegmentMember |  | 26,000,000 us-gaap_AssetRetirementObligation / dei_LegalEntityAxis = iep_FederalMogulMember / us-gaap_StatementBusinessSegmentsAxis = iep_AutomotiveSegmentMember
ARI [Member] | Railcar Segment [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Litigation claim gain amount |  |  | 25,000,000 iep_Litigationclaimgainamount / dei_LegalEntityAxis = iep_AriMember / us-gaap_StatementBusinessSegmentsAxis = iep_RailcarSegmentMember |  |
Litigation counterclaim amount |  |  | 10,000,000 iep_Litigationcounterclaimamount / dei_LegalEntityAxis = iep_AriMember / us-gaap_StatementBusinessSegmentsAxis = iep_RailcarSegmentMember |  |
Tropicana [Member] | Gaming Segment [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Litigation Settlement, Amount |  |  | 600,000 us-gaap_LitigationSettlementAmount / dei_LegalEntityAxis = iep_TropicanaMember / us-gaap_StatementBusinessSegmentsAxis = iep_GamingSegmentMember |  |
Adjustment to tax claim receivable and accrual |  |  | 8,000,000 iep_Adjustmenttotaxclaimreceivableandaccrual / dei_LegalEntityAxis = iep_TropicanaMember / us-gaap_StatementBusinessSegmentsAxis = iep_GamingSegmentMember |  |
Cleveland OH Scrap Processing Facility [Member] | PSC Metals [Member] | Metals Segment [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Number of Scrap Processing Facilities Requiring Refrigerant Extraction Services |  |  | 11 iep_NumberOfScrapProcessingFacilitiesRequiringRefrigerantExtractionServices / us-gaap_EnvironmentalRemediationSiteAxis = iep_ClevelandOhScrapProcessingFacilityMember / dei_LegalEntityAxis = iep_PscMetalsMember / us-gaap_StatementBusinessSegmentsAxis = iep_MetalsSegmentMember |  |
Environmental Compliance Costs, Anticipated Cost, Low Estimate |  |  | 800,000 iep_EnvironmentalComplianceCostsAnticipatedCostLowEstimate / us-gaap_EnvironmentalRemediationSiteAxis = iep_ClevelandOhScrapProcessingFacilityMember / dei_LegalEntityAxis = iep_PscMetalsMember / us-gaap_StatementBusinessSegmentsAxis = iep_MetalsSegmentMember |  |
Environmental Compliance Costs, Anticipated Cost, High Estimate |  |  | 1,700,000 iep_EnvironmentalComplianceCostsAnticipatedCostHighEstimate / us-gaap_EnvironmentalRemediationSiteAxis = iep_ClevelandOhScrapProcessingFacilityMember / dei_LegalEntityAxis = iep_PscMetalsMember / us-gaap_StatementBusinessSegmentsAxis = iep_MetalsSegmentMember |  |
Loss Contingency, Damages Paid, Value |  |  |  | 199,000 us-gaap_LossContingencyDamagesPaidValue / us-gaap_EnvironmentalRemediationSiteAxis = iep_ClevelandOhScrapProcessingFacilityMember / dei_LegalEntityAxis = iep_PscMetalsMember / us-gaap_StatementBusinessSegmentsAxis = iep_MetalsSegmentMember |
Principal Owners and Affiliates [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Affiliate ownership interest |  |  | 88.40%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest / iep_MembersOrPartnersAxis = iep_PrincipalOwnersAndAffiliatesMember |  |
Principal Owners and Affiliates [Member] | Icahn Enterprises G.P. [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Affiliate ownership in parent company general partner |  |  |  |  | 100.00%iep_AffiliateOwnershipInParentCompanyGeneralPartner / dei_LegalEntityAxis = iep_IcahnEnterprisesGPMember / iep_MembersOrPartnersAxis = iep_PrincipalOwnersAndAffiliatesMember
ACF [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Funded status of the plan |  |  | (474,000,000)us-gaap_DefinedBenefitPlanFundedStatusOfPlan / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = iep_AcfMember |  | (592,000,000)us-gaap_DefinedBenefitPlanFundedStatusOfPlan / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = iep_AcfMember
Starfire Holding Corporation [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Ownership Percentage by Principal Owner |  |  | 99.40%iep_OwnershipPercentageByPrincipalOwner / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = iep_StarfireHoldingCorporationMember |  |
Subsidiary Indemnity Agreement, Pension Funding Contingencies As A Result of Being In The Controlled Group, Distribution Limitation, Net Worth Floor |  |  | $ 250,000,000 iep_SubsidiaryIndemnityAgreementPensionFundingContingenciesAsResultOfBeingInControlledGroupDistributionLimitationNetWorthFloor / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = iep_StarfireHoldingCorporationMember |  |

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