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v2.4.1.9

Operating Units Other Segments and Other Information (Details) (USD $) In Millions, unless otherwise specified | 0 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Oct. 02, 2013 | Dec. 31, 2014 manufacturing_facilities distribution_centers | Dec. 31, 2013
Segment Reporting Information [Line Items] |  |  |
2015 |  | 434 us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent |
2016 |  | 400 us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears |
2017 |  | 344 us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears |
2018 |  | 275 us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears |
2019 |  | 166 us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears |
Thereafter |  | 166 us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter |
Operating Leases, Future Minimum Payments Receivable |  | 1,785 us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable |
Real Estate Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of Real Estate Properties |  | 29 us-gaap_NumberOfRealEstateProperties / us-gaap_StatementBusinessSegmentsAxis = iep_RealEstateSegmentMember |
Real estate assets pledged to collateralize mortgages |  | 31 us-gaap_PledgedAssetsNotSeparatelyReportedOnStatementOfFinancialPosition / us-gaap_StatementBusinessSegmentsAxis = iep_RealEstateSegmentMember | $ 56 us-gaap_PledgedAssetsNotSeparatelyReportedOnStatementOfFinancialPosition / us-gaap_StatementBusinessSegmentsAxis = iep_RealEstateSegmentMember
New ARL [Member] [Member] | Railcar Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Percentage of equity ownership in subsidiary | 75.00%us-gaap_SubsidiaryOfLimitedLiabilityCompanyOrLimitedPartnershipOwnershipInterest / dei_LegalEntityAxis = iep_NewARLMemberMember / us-gaap_StatementBusinessSegmentsAxis = iep_RailcarSegmentMember |  |
Viskase [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Percentage of equity ownership in subsidiary |  | 73.50%us-gaap_SubsidiaryOfLimitedLiabilityCompanyOrLimitedPartnershipOwnershipInterest / dei_LegalEntityAxis = iep_ViskaseMember |
Number of manufacturing facilities |  | 9 iep_NnumberOfManufacturingFacilities / dei_LegalEntityAxis = iep_ViskaseMember |
Number of distribution centers |  | 9 iep_NumberOfDistributionCenters / dei_LegalEntityAxis = iep_ViskaseMember |
Percentage of revenues from foreign countries |  | 72.00%iep_DisclosureOnGeographicAreasRevenueFromExternalCustomersAttributedToForeignCountriesPercentage / dei_LegalEntityAxis = iep_ViskaseMember |
ARI [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Percentage of equity ownership in subsidiary |  | 55.60%us-gaap_SubsidiaryOfLimitedLiabilityCompanyOrLimitedPartnershipOwnershipInterest / dei_LegalEntityAxis = iep_AriMember |
MASSACHUSETTS | Real Estate Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of residential units for future development |  | 267 iep_NumberOfUnitsOfResidentialHousingInFutureDevelopment / iep_LocationOfOperationsStateOrCountryAxis = stpr_MA / us-gaap_StatementBusinessSegmentsAxis = iep_RealEstateSegmentMember |
FLORIDA | Real Estate Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of residential units for future development |  | 1,328 iep_NumberOfUnitsOfResidentialHousingInFutureDevelopment / iep_LocationOfOperationsStateOrCountryAxis = stpr_FL / us-gaap_StatementBusinessSegmentsAxis = iep_RealEstateSegmentMember |
Las Vegas, Nevada [Member] [Member] | Real Estate Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Acres of land |  | 23 iep_Acresofland / iep_PropertyLocationAxis = iep_LasVegasNevadaMemberMember / us-gaap_StatementBusinessSegmentsAxis = iep_RealEstateSegmentMember |

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- Definition Disclosure on Geographic Areas, Revenue from External Customers Attributed to Foreign Countries, Percentage + References No definition available. + Details
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- Definition Nnumber of Manufacturing Facilities + References No definition available. + Details
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- Definition Number of Distribution Centers + References No definition available. + Details
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- Definition Number of Units of Residential Housing in Future Development + References No definition available. + Details
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- Definition Future minimum rental payments in aggregate as of the balance sheet date under operating leases. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718 + Details
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- Definition Future rental payments receivable within one year of the balance sheet date under an operating lease. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718 + Details
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- Definition Future rental payments receivable within the fifth year from the balance sheet date under an operating lease. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718 + Details
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- Definition Future rental payments receivable within the fourth year from the balance sheet date under an operating lease. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718 + Details
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- Definition Future rental payments receivable within the third year from the balance sheet date under an operating lease. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718 + Details
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- Definition Future rental payments receivable within the second year from the balance sheet date under an operating lease. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718 + Details
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- Definition Future minimum lease payments receivable under operating leases for periods greater than five years following the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718 + Details
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- Definition The carrying amount, as of the date of the latest financial statement presented, of all assets that are pledged as collateral for the payment of the related debt obligation primarily arising from secured borrowings, repurchase agreements or other current or potential obligations, where the secured party does not have the right by contract or custom to sell or re-pledge the collateral and therefore are not reclassified and separately reported in the statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 50 -Paragraph 1A -Subparagraph (b)(1)(i) -URI http://asc.fasb.org/extlink&oid=34720971&loc=SL6224234-111729 + Details
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