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Financial Instruments Derivative Activities Table (Details) - Investment Segment - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Equity Contract [Member] |  |
Primary underlying risk: |  |
Notional Exposure of Derivatives, Long Position | $ 806 | $ 118
Short Notional Exposure | 13,113 | 8,368
Credit Risk Contract [Member] |  |
Primary underlying risk: |  |
Notional Exposure of Derivatives, Long Position | 0 | 0
Short Notional Exposure | 622 | 479
Commodity Contract [Member] |  |
Primary underlying risk: |  |
Notional Exposure of Derivatives, Long Position | 0 | 0
Short Notional Exposure | 0 | 114
Credit Default Swap [Member] |  |
Primary underlying risk: |  |
Derivative, Notional Amount | $ 4,700 | $ 1,800

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- Definition Notional Exposure of Derivatives, Long Position + References No definition available. + Details
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Balance Type: | debit
Period Type: | instant

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- Definition Notional Exposure of Derivatives, Short Position + References No definition available. + Details
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Namespace Prefix: | iep_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Details
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- Details
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Namespace Prefix: |
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- Details
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- Details
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- Details
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Balance Type: |
Period Type: |