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Schedule I Condensed Financial Information of Parent - Balance Sheet (Details) (USD $) In Millions, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
--- | --- | --- | --- | --- | ---
Cash and cash equivalents | $ 2,912 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 3,262 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 3,108 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 2,328 us-gaap_CashAndCashEquivalentsAtCarryingValue |
Other assets | 1,320 us-gaap_OtherAssets | 910 us-gaap_OtherAssets |  |  |
Total Assets | 35,780 us-gaap_Assets | 31,745 us-gaap_Assets |  |  |
Accrued expenses and other liabilities | 2,235 us-gaap_AccruedLiabilitiesCurrentAndNoncurrent | 2,196 us-gaap_AccruedLiabilitiesCurrentAndNoncurrent |  |  |
Debt | 11,588 us-gaap_DebtAndCapitalLeaseObligations | 9,295 us-gaap_DebtAndCapitalLeaseObligations |  |  |
Total liabilities | 23,390 us-gaap_Liabilities | 18,436 us-gaap_Liabilities |  |  |
Limited partners: Depositary units: 123,103,414 and 115,900,309 units issued and outstanding at December 31, 2014 and 2013, respectively | 5,672 us-gaap_LimitedPartnersCapitalAccount | 6,308 us-gaap_LimitedPartnersCapitalAccount |  |  |
General partner | (229)us-gaap_GeneralPartnersCapitalAccount | (216)us-gaap_GeneralPartnersCapitalAccount |  |  |
Total equity | 12,390 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | 13,309 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | 9,816 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | 7,871 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest |
Total Liabilities and Equity | 35,780 us-gaap_LiabilitiesAndStockholdersEquity | 31,745 us-gaap_LiabilitiesAndStockholdersEquity |  |  |
Icahn Enterprises Holdings [Member] |  |  |  |  |
Cash and cash equivalents | 2,912 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember | 3,262 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember | 3,108 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember | 2,328 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember |
Other assets | 1,343 us-gaap_OtherAssets / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember | 926 us-gaap_OtherAssets / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember |  |  |
Total Assets | 35,803 us-gaap_Assets / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember | 31,761 us-gaap_Assets / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember |  |  |
Accrued expenses and other liabilities | 2,235 us-gaap_AccruedLiabilitiesCurrentAndNoncurrent / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember | 2,196 us-gaap_AccruedLiabilitiesCurrentAndNoncurrent / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember |  |  |
Debt | 11,588 us-gaap_DebtAndCapitalLeaseObligations / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember | 9,289 us-gaap_DebtAndCapitalLeaseObligations / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember |  |  |
Total liabilities | 23,390 us-gaap_Liabilities / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember | 18,430 us-gaap_Liabilities / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember |  |  |
Limited partners: Depositary units: 123,103,414 and 115,900,309 units issued and outstanding at December 31, 2014 and 2013, respectively | 5,751 us-gaap_LimitedPartnersCapitalAccount / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember | 6,393 us-gaap_LimitedPartnersCapitalAccount / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember |  |  |
General partner | (285)us-gaap_GeneralPartnersCapitalAccount / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember | (279)us-gaap_GeneralPartnersCapitalAccount / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember |  |  |
Total equity | 12,413 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember | 13,331 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember | 9,838 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember | 7,892 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember |
Total Liabilities and Equity | 35,803 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember | 31,761 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember |  |  |
Parent Company [Member] |  |  |  |  |
Cash and cash equivalents | 0 us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember | 0 us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember | 0 us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember |  | 0 us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember
Investments in subsidiaries, net | 11,028 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember | 10,384 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember |  |  |
Deferred financing costs | 8 us-gaap_DeferredFinanceCostsNet / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember | 7 us-gaap_DeferredFinanceCostsNet / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember |  |  |
Total Assets | 11,036 us-gaap_Assets / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember | 10,391 us-gaap_Assets / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember |  |  |
Accrued expenses and other liabilities | 107 us-gaap_AccruedLiabilitiesCurrentAndNoncurrent / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember | 283 us-gaap_AccruedLiabilitiesCurrentAndNoncurrent / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember |  |  |
Debt | 5,486 us-gaap_DebtAndCapitalLeaseObligations / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember | 4,016 us-gaap_DebtAndCapitalLeaseObligations / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember |  |  |
Total liabilities | 5,593 us-gaap_Liabilities / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember | 4,299 us-gaap_Liabilities / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember |  |  |
Limited partners: Depositary units: 123,103,414 and 115,900,309 units issued and outstanding at December 31, 2014 and 2013, respectively | 5,672 us-gaap_LimitedPartnersCapitalAccount / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember | 6,308 us-gaap_LimitedPartnersCapitalAccount / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember |  |  |
General partner | (229)us-gaap_GeneralPartnersCapitalAccount / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember | (216)us-gaap_GeneralPartnersCapitalAccount / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember |  |  |
Total equity | 5,443 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember | 6,092 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember |  |  |
Total Liabilities and Equity | 11,036 us-gaap_LiabilitiesAndStockholdersEquity / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember | 10,391 us-gaap_LiabilitiesAndStockholdersEquity / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember |  |  |
Parent Company [Member] | Icahn Enterprises Holdings [Member] |  |  |  |  |
Cash and cash equivalents | 388 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember | 142 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember | 107 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember |  | 24 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember
Other assets | 114 us-gaap_OtherAssets / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember | 112 us-gaap_OtherAssets / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember |  |  |
Investments in subsidiaries, net | 10,592 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember | 10,054 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember |  |  |
Total Assets | 11,094 us-gaap_Assets / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember | 10,308 us-gaap_Assets / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember |  |  |
Accrued expenses and other liabilities | 111 us-gaap_AccruedLiabilitiesCurrentAndNoncurrent / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember | 144 us-gaap_AccruedLiabilitiesCurrentAndNoncurrent / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember |  |  |
Debt | 5,517 us-gaap_DebtAndCapitalLeaseObligations / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember | 4,050 us-gaap_DebtAndCapitalLeaseObligations / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember |  |  |
Total liabilities | 5,628 us-gaap_Liabilities / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember | 4,194 us-gaap_Liabilities / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember |  |  |
Limited partners: Depositary units: 123,103,414 and 115,900,309 units issued and outstanding at December 31, 2014 and 2013, respectively | 5,751 us-gaap_LimitedPartnersCapitalAccount / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember | 6,393 us-gaap_LimitedPartnersCapitalAccount / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember |  |  |
General partner | (285)us-gaap_GeneralPartnersCapitalAccount / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember | (279)us-gaap_GeneralPartnersCapitalAccount / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember |  |  |
Total equity | 5,466 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember | 6,114 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember |  |  |
Total Liabilities and Equity | $ 11,094 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember | $ 10,308 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = iep_IcahnEnterprisesHoldingsMember / us-gaap_StatementScenarioAxis = us-gaap_ParentCompanyMember |  |  |

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- Definition Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(5)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.15(a)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph a -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph 5 -Article 9 + Details
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