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Debt Narrative - Senior Unsecured Notes - Icahn Enterprises (Details) (Senior unsecured notes [Member], USD $) |  | 0 Months Ended | 9 Months Ended |  | 0 Months Ended | 9 Months Ended |  |  |  | 0 Months Ended |  | 0 Months Ended | 9 Months Ended |  | 9 Months Ended |  | 0 Months Ended
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Sep. 30, 2013 | Jan. 15, 2010 6% senior unsecured notes due 2020 - Icahn Enterprises/Icahn Enterprises Holdings | Sep. 30, 2013 6% senior unsecured notes due 2020 - Icahn Enterprises/Icahn Enterprises Holdings | Aug. 01, 2013 6% senior unsecured notes due 2020 - Icahn Enterprises/Icahn Enterprises Holdings | Jan. 15, 2010 Initial Notes [Member] | Sep. 30, 2013 Initial Notes [Member] | Nov. 12, 2010 2016 Additional Notes [Member] | Jan. 15, 2010 7.75% senior unsecured notes due 2016 [Member] | Jan. 15, 2010 8% senior unsecured notes due 2018 [Member] | Nov. 12, 2010 2018 Additional Notes [Member] | Nov. 12, 2010 2010 Additional Notes [Member] | Jul. 02, 2012 2012 Additional Notes [Member] | Jan. 25, 2013 Variable Rate Senior Unsecured Convertible Notes [Member] | Sep. 30, 2013 Variable Rate Senior Unsecured Convertible Notes [Member] | Sep. 30, 2012 Variable Rate Senior Unsecured Convertible Notes [Member] | Apr. 30, 2007 Variable Rate Senior Unsecured Convertible Notes [Member] | Sep. 30, 2013 Debt Instrument, Repurchase Date Range, Prior to February 1, 2017 [Member] 6% senior unsecured notes due 2020 - Icahn Enterprises/Icahn Enterprises Holdings | Sep. 30, 2013 Debt Instrument, Repurchase Date Range, from August 1, 2017 to July 31, 2018 [Member] 6% senior unsecured notes due 2020 - Icahn Enterprises/Icahn Enterprises Holdings | Sep. 30, 2013 Debt Instrument, Repurchase Date Range, from August 1, 2018 to July 31, 2019 [Member] 6% senior unsecured notes due 2020 - Icahn Enterprises/Icahn Enterprises Holdings | Sep. 30, 2013 Debt Instrument, Repurchase Date Range, on or after August 1, 2019 [Member] 6% senior unsecured notes due 2020 - Icahn Enterprises/Icahn Enterprises Holdings | Sep. 30, 2013 Debt repurchase date range, from January 15, 2013 to January 14, 2014 [Member] 7.75% senior unsecured notes due 2016 [Member] | Sep. 30, 2013 Debt repurchase date range, from January 15, 2014 to January 14, 2015 [Member] 7.75% senior unsecured notes due 2016 [Member] | Sep. 30, 2013 Debt repurchase date range, from January 15, 2014 to January 14, 2015 [Member] 8% senior unsecured notes due 2018 [Member] | Sep. 30, 2013 Debt repurchase date range, on or after January 15, 2015 [Member] 7.75% senior unsecured notes due 2016 [Member] | Sep. 30, 2013 Debt repurchase date range, from January 15, 2015 to January 14, 2016 [Member] 8% senior unsecured notes due 2018 [Member] | Sep. 30, 2013 Debt repurchase date range, on or after January 15, 2016 [Member] 8% senior unsecured notes due 2018 [Member] | Sep. 30, 2013 Debt repurchase percentage of principal amount authorized pursuant to additional requirements [Member] 6% senior unsecured notes due 2020 - Icahn Enterprises/Icahn Enterprises Holdings | Sep. 30, 2013 Debt repurchase percentage of principal amount authorized pursuant to additional requirements [Member] 7.75% senior unsecured notes due 2016 [Member] | Sep. 30, 2013 Debt repurchase percentage of principal amount authorized pursuant to additional requirements [Member] 8% senior unsecured notes due 2018 [Member] | Sep. 30, 2013 Debt repurchase percentage of principal amount authorized if change of control [Member] 6% senior unsecured notes due 2020 - Icahn Enterprises/Icahn Enterprises Holdings | Sep. 30, 2013 Debt repurchase percentage of principal amount authorized if change of control [Member] Initial Notes [Member] | Apr. 05, 2007 Minimum [Member] Variable Rate Senior Unsecured Convertible Notes [Member] | Apr. 05, 2007 Maximum [Member] Variable Rate Senior Unsecured Convertible Notes [Member] | Jan. 25, 2013 Icahn Enterprises Holdings [Member] Variable Rate Senior Unsecured Convertible Notes [Member]
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term Loan Facility |  |  |  | $ 500,000,000 |  |  | $ 200,000,000 | $ 850,000,000 | $ 1,150,000,000 | $ 300,000,000 |  | $ 1,000,000,000 |  |  |  | $ 600,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate, long-term debt |  | 6.00% |  |  |  |  |  | 7.75% | 8.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross proceeds from sale of senior unsecured notes |  | 493,000,000 |  |  | 1,987,000,000 |  |  |  |  |  | 512,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption percentage of principal amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 104.50% | 103.00% | 101.50% | 100.00% | 103.875% | 101.938% | 104.00% | 100.00% | 102.00% | 100.00% | 106.00% | 107.75% | 108.00% | 101.00% | 101.00% |  |  |
Redemption percentage of aggregate principal amount authorized to be redeemed at higher percenatge of principal amount |  |  | 35.00% |  |  | 35.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of aggregate principal amount required to remain outstanding if debt redeemed at higher percenatge of principal amount |  |  | 65.00% |  |  | 65.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.00% | 5.50% |
Variable rate notes, depositary unit, maximum dividends, per share, declared, before matching distribution to variable rate noteholders required |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.10 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable rate notes, distribution amount |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of debt |  |  |  |  |  |  |  |  |  |  |  |  | 600,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 44,000,000
Additional indebtedness allowed per debt covenants | $ 2,700,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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