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v2.4.1.9

(Details) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013
Principal Owners and Affiliates [Member] |  |
Entity Information [Line Items] |  |
Affiliate ownership interest in Icahn Enterprises (in units) | 108,810,845 iep_LimitedLiabilityCompanyLlcOrLimitedPartnershipLpMembersOrLimitedPartnersOwnershipInterestUnits / iep_MembersOrPartnersAxis = iep_PrincipalOwnersAndAffiliatesMember |
Affiliate ownership interest in Icahn Enterprises | 88.40%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest / iep_MembersOrPartnersAxis = iep_PrincipalOwnersAndAffiliatesMember |
Icahn Enterprises G.P. [Member] |  |
Entity Information [Line Items] |  |
General partner ownership percentage in Icahn Enterprises | 1.00%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest / iep_MembersOrPartnersAxis = iep_IcahnEnterprisesGPMember | 1.00%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest / iep_MembersOrPartnersAxis = iep_IcahnEnterprisesGPMember
General partner ownership interest in Icahn Enterprises Holdings | 1.00%iep_SubsidiaryOfLimitedLiabilityCompanyLlcOrLimitedPartnershipLpManagingMemberOrGeneralPartnerOwnershipInterest / iep_MembersOrPartnersAxis = iep_IcahnEnterprisesGPMember |
Aggregate general partner ownership interest of parent and operating subsidiary | 1.99%iep_LimitedLiabilityCompanyLlcOrLimitedPartnershipLpManagingMemberOrGeneralPartnerAggregateOwnershipInterestOfParentAndHoldingCompanySubsidiaries / iep_MembersOrPartnersAxis = iep_IcahnEnterprisesGPMember |
Icahn Enterprises Holdings [Member] |  |
Entity Information [Line Items] |  |
Percentage of equity ownership in operating subsidiary | 99.00%us-gaap_SubsidiaryOfLimitedLiabilityCompanyOrLimitedPartnershipOwnershipInterest / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember |

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- Definition Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Aggregate Ownership interest of Parent and Holding Company Subsidiaries + References No definition available. + Details
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- Definition Subsidiary of Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest + References No definition available. + Details
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- Definition Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 272 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055 + Details
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- Definition The number of units or percentage investment held by one or more members or limited partners of the LLC or LP. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 272 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055 + Details
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