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Debt Narrative - Senior Unsecured Notes - Icahn Enterprises and Icahn Enterprises Holdings (Details) - USD ($) $ in Millions |  |  |  | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Jan. 29, 2014 | Jan. 21, 2014 | Aug. 02, 2013 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Aug. 01, 2013
Debt Instrument [Line Items] |  |  |  |  |  |  |
Loss on extinguishment of debt |  |  |  | $ (2) | $ (162) | $ 0 |
Holding Company [Member] | 5.875% senior unsecured notes due 2022 - Icahn Enterprises/Icahn Enterprises Holdings |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Term Loan Facility | $ 1,350 |  |  |  |  |  |
Proceeds from Issuance of Debt | $ 1,340 |  |  |  |  |  |
Holding Company [Member] | Additional 2020 Notes [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Term Loan Facility |  | $ 1,200 |  |  |  |  |
Interest rate, long-term debt | 5.875% |  |  |  |  |  |
Proceeds from Issuance of Debt |  | $ 1,217 |  |  |  |  |
Holding Company [Member] | 6.00% senior unsecured notes due 2020 - Icahn Enterprises/Icahn Enterprises Holdings |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Term Loan Facility |  |  |  |  |  |  | $ 500
Interest rate, long-term debt |  | 6.00% |  |  |  |  | 6.00%
Proceeds from Issuance of Debt |  |  | $ 493 |  |  |  |
Holding Company [Member] | 4.875% senior unsecured notes due 2019 - Icahn Enterprises/Icahn Enterprises Holdings |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Term Loan Facility |  | $ 1,275 |  |  |  |  |
Interest rate, long-term debt |  | 4.875% |  |  |  |  |
Proceeds from Issuance of Debt |  | $ 1,269 |  |  |  |  |
Holding Company [Member] | 3.50% senior unsecured notes due 2017 - Icahn Enterprises/Icahn Enterprises Holdings |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Term Loan Facility |  | $ 1,175 |  |  |  |  |
Interest rate, long-term debt |  | 3.50% |  |  |  |  |
Proceeds from Issuance of Debt |  | $ 1,169 |  |  |  |  |
Holding Company [Member] | 2010-2012 Notes [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Use of portion of debt proceeds |  | $ 3,500 |  |  |  |  |
Loss on extinguishment of debt |  |  |  |  | $ (108) |  |

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