XML 78 R68.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Other Income (Loss), Net (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Component of Other Income (Loss), Net [Line Items] |  |
Other income (loss), net | $ 71 | $ (26)
Realized and unrealized gain on derivatives, net (Note 6) |  |
Component of Other Income (Loss), Net [Line Items] |  |
Other income (loss), net | 59 | 12
Other derivative loss |  |
Component of Other Income (Loss), Net [Line Items] |  |
Other income (loss), net | 0 | (41)
Loss on extinguishment of debt |  |
Component of Other Income (Loss), Net [Line Items] |  |
Other income (loss), net | 0 | (2)
Equity earnings from non-consolidated affiliates |  |
Component of Other Income (Loss), Net [Line Items] |  |
Other income (loss), net | 22 | 18
Foreign currency transaction loss |  |
Component of Other Income (Loss), Net [Line Items] |  |
Other income (loss), net | (1) | (7)
Gain (loss) on disposition of assets, net |  |
Component of Other Income (Loss), Net [Line Items] |  |
Other income (loss), net | 3 | (5)
Non-service pension and other post-retirement benefits expense |  |
Component of Other Income (Loss), Net [Line Items] |  |
Other income (loss), net | (13) | (10)
Other |  |
Component of Other Income (Loss), Net [Line Items] |  |
Other income (loss), net | $ 1 | $ 9

X
- Definition Component of Other Income (Loss), Net [Line Items] + References No definition available. + Details
Name: | iep_ComponentOfOtherIncomeLossNetLineItems
Namespace Prefix: | iep_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of income (expense) related to nonoperating activities, classified as other. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.9) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
Name: | us-gaap_OtherNonoperatingIncomeExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | iep_ComponentOfOtherIncomeLossNetAxis=iep_UnrealizedgainlossonderivativesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | iep_ComponentOfOtherIncomeLossNetAxis=iep_OtherderivativegainMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | iep_ComponentOfOtherIncomeLossNetAxis=iep_LossOnDebtExtinguishmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | iep_ComponentOfOtherIncomeLossNetAxis=iep_IncomelossfromnonconsolidatedaffiliatesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | iep_ComponentOfOtherIncomeLossNetAxis=us-gaap_ForeignCurrencyGainLossMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | iep_ComponentOfOtherIncomeLossNetAxis=iep_GainlossondispositionsofassetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | iep_ComponentOfOtherIncomeLossNetAxis=iep_NonservicepensionandotherpostretirementbenefitsexpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | iep_ComponentOfOtherIncomeLossNetAxis=iep_OtherIncomeLossNotSpecifiedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |