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(Details) - shares | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2013
Principal Owners and Affiliates [Member] |  |
Entity Information [Line Items] |  |
Affiliate ownership interest in Icahn Enterprises (in units) | 117,033,818 |
Affiliate ownership interest in Icahn Enterprises | 89.00% |
Icahn Enterprises G.P. [Member] |  |
Entity Information [Line Items] |  |
General partner ownership percentage in Icahn Enterprises | 1.00% | 1.00%
General partner ownership interest in Icahn Enterprises Holdings | 1.00% |
Aggregate general partner ownership interest of parent and operating subsidiary | 1.99% |
Icahn Enterprises Holdings [Member] |  |
Entity Information [Line Items] |  |
Percentage of equity ownership in operating subsidiary | 99.00% |

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