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Debt Narrative - Senior Unsecured Notes - Icahn Enterprises (Details) (USD $) | 9 Months Ended |  | 0 Months Ended | 12 Months Ended | 0 Months Ended | 12 Months Ended |  |  | 0 Months Ended |  | 0 Months Ended | 9 Months Ended |  |  |  | 0 Months Ended |  | 9 Months Ended | 0 Months Ended | 12 Months Ended |  |  | 0 Months Ended |  |  | 0 Months Ended | 9 Months Ended | 12 Months Ended | 9 Months Ended | 12 Months Ended | 9 Months Ended | 12 Months Ended | 9 Months Ended
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Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 Senior unsecured notes [Member] | Jan. 29, 2014 Senior unsecured notes [Member] 2022 Notes [Member] | Dec. 31, 2013 Senior unsecured notes [Member] 2022 Notes [Member] | Jan. 29, 2014 Senior unsecured notes [Member] 2020 Notes [Member] | Dec. 31, 2013 Senior unsecured notes [Member] 2020 Notes [Member] | Aug. 01, 2013 Senior unsecured notes [Member] 2020 Notes [Member] | Jan. 15, 2010 Senior unsecured notes [Member] 2020 Notes [Member] | Jan. 29, 2014 Senior unsecured notes [Member] Additional 2020 Notes [Member] | Jan. 21, 2014 Senior unsecured notes [Member] Additional 2020 Notes [Member] | Jan. 15, 2010 Senior unsecured notes [Member] Initial Notes [Member] | Sep. 30, 2014 Senior unsecured notes [Member] Initial Notes [Member] | Nov. 12, 2010 Senior unsecured notes [Member] 2016 Additional Notes [Member] | Jan. 15, 2010 Senior unsecured notes [Member] 7.75% senior unsecured notes due 2016 [Member] | Jan. 15, 2010 Senior unsecured notes [Member] 8% senior unsecured notes due 2018 [Member] | Nov. 12, 2010 Senior unsecured notes [Member] 2018 Additional Notes [Member] | Nov. 12, 2010 Senior unsecured notes [Member] 2010 Additional Notes [Member] | Jul. 02, 2012 Senior unsecured notes [Member] 2012 Additional Notes [Member] | Sep. 30, 2013 Senior unsecured notes [Member] Variable Rate Senior Unsecured Convertible Notes [Member] | Jan. 29, 2014 Senior unsecured notes [Member] 2019 Notes [Member] | Dec. 31, 2013 Senior unsecured notes [Member] 2019 Notes [Member] | Jan. 21, 2014 Senior unsecured notes [Member] 2019 Notes [Member] | Jan. 15, 2010 Senior unsecured notes [Member] 2019 Notes [Member] | Jan. 29, 2014 Senior unsecured notes [Member] 2017 Notes [Member] | Jan. 21, 2014 Senior unsecured notes [Member] 2017 Notes [Member] | Jan. 15, 2010 Senior unsecured notes [Member] 2017 Notes [Member] | Jan. 24, 2014 Senior unsecured notes [Member] 2010-2012 Notes [Member] | Sep. 30, 2014 Senior unsecured notes [Member] 2010-2012 Notes [Member] | Dec. 31, 2013 Debt Instrument, Repurchase Date Range, from August 1, 2017 to January 31, 2018 [Member] Senior unsecured notes [Member] 2022 Notes [Member] | Dec. 31, 2013 Debt Instrument, Repurchase Date Range, from February 1, 2018 to January 31, 2019 [Member] Senior unsecured notes [Member] 2022 Notes [Member] | Dec. 31, 2013 Debt Instrument, Repurchase Date Range, from February 1, 2019 to January 31, 2020 [Member] Senior unsecured notes [Member] 2022 Notes [Member] | Dec. 31, 2013 Debt Instrument, Repurchase Date Range, on or after February 1, 2020 [Member] Senior unsecured notes [Member] 2022 Notes [Member] | Dec. 31, 2013 Debt Instrument, Repurchase Date Range, Prior to February 1, 2017 [Member] Senior unsecured notes [Member] 2020 Notes [Member] | Sep. 30, 2014 Debt repurchase date range, from January 15, 2013 to January 14, 2014 [Member] Senior unsecured notes [Member] 7.75% senior unsecured notes due 2016 [Member] | Sep. 30, 2014 Debt repurchase date range, from January 15, 2014 to January 14, 2015 [Member] Senior unsecured notes [Member] 7.75% senior unsecured notes due 2016 [Member] | Sep. 30, 2014 Debt repurchase date range, from January 15, 2014 to January 14, 2015 [Member] Senior unsecured notes [Member] 8% senior unsecured notes due 2018 [Member] | Sep. 30, 2014 Debt repurchase date range, on or after January 15, 2015 [Member] Senior unsecured notes [Member] 7.75% senior unsecured notes due 2016 [Member] | Sep. 30, 2014 Debt repurchase date range, from January 15, 2015 to January 14, 2016 [Member] Senior unsecured notes [Member] 8% senior unsecured notes due 2018 [Member] | Sep. 30, 2014 Debt repurchase date range, on or after January 15, 2016 [Member] Senior unsecured notes [Member] 8% senior unsecured notes due 2018 [Member] | Dec. 31, 2013 Debt Instrument, Repurchase Date Range, from August 1, 2017 to July 31, 2018 [Member] Senior unsecured notes [Member] 2020 Notes [Member] | Dec. 31, 2013 Debt Instrument, Repurchase Date Range, from August 1, 2018 to July 31, 2019 [Member] Senior unsecured notes [Member] 2020 Notes [Member] | Dec. 31, 2013 Debt Instrument, Repurchase Date Range, on or after August 1, 2019 [Member] Senior unsecured notes [Member] 2020 Notes [Member] | Dec. 31, 2013 Debt Instrument, Repurchase Date Range, from July 15, 2016 to January 14, 2017 [Member] Senior unsecured notes [Member] 2019 Notes [Member] | Dec. 31, 2013 Debt Instrument, Repurchase Date Range, from January 15, 2017 to January 14, 2018 [Member] Senior unsecured notes [Member] 2019 Notes [Member] | Dec. 31, 2013 Debt Instrument, Repurchase Date Range, on or after January 31, 2018 [Member] Senior unsecured notes [Member] 2019 Notes [Member] | Dec. 31, 2013 Debt Instrument, Repurchase Date Range, on or after February 15, 2017 [Member] Senior unsecured notes [Member] 2022 Notes [Member] | Dec. 31, 2013 Debt repurchase percentage of principal amount authorized pursuant to additional requirements [Member] Senior unsecured notes [Member] 2022 Notes [Member] | Dec. 31, 2013 Debt repurchase percentage of principal amount authorized pursuant to additional requirements [Member] Senior unsecured notes [Member] 2020 Notes [Member] | Sep. 30, 2014 Debt repurchase percentage of principal amount authorized pursuant to additional requirements [Member] Senior unsecured notes [Member] 7.75% senior unsecured notes due 2016 [Member] | Sep. 30, 2014 Debt repurchase percentage of principal amount authorized pursuant to additional requirements [Member] Senior unsecured notes [Member] 8% senior unsecured notes due 2018 [Member] | Dec. 31, 2013 Debt repurchase percentage of principal amount authorized pursuant to additional requirements [Member] Senior unsecured notes [Member] 2019 Notes [Member] | Dec. 31, 2013 Debt repurchase percentage of principal amount authorized if change of control [Member] Senior unsecured notes [Member] 2022 Notes [Member] | Dec. 31, 2013 Debt repurchase percentage of principal amount authorized if change of control [Member] Senior unsecured notes [Member] 2017 and 2019 Notes [Member] | Dec. 31, 2013 Debt repurchase percentage of principal amount authorized if change of control [Member] Senior unsecured notes [Member] 2020 Notes [Member] | Sep. 30, 2014 Debt repurchase percentage of principal amount authorized if change of control [Member] Senior unsecured notes [Member] Initial Notes [Member] | Sep. 30, 2014 Icahn Enterprises Holdings [Member] | Sep. 30, 2013 Icahn Enterprises Holdings [Member]
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term Loan Facility |  |  |  | $ 1,350,000,000 |  |  |  | $ 500,000,000 |  |  | $ 1,200,000,000 |  |  | $ 200,000,000 | $ 850,000,000 | $ 1,150,000,000 | $ 300,000,000 |  | $ 1,000,000,000 |  |  |  | $ 1,275,000,000 |  |  | $ 1,175,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate, long-term debt |  |  |  |  |  |  |  |  | 6.00% | 5.875% |  |  |  |  | 7.75% | 8.00% |  |  |  |  |  |  |  | 4.875% |  |  | 3.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from Issuance of Debt |  |  |  | 1,340,000,000 |  | 493,000,000 |  |  |  | 1,217,000,000 |  |  |  |  |  |  |  |  |  |  | 1,269,000,000 |  |  |  | 1,169,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross proceeds from sale of senior unsecured notes |  |  |  |  |  |  |  |  |  |  |  | 1,987,000,000 |  |  |  |  |  | 512,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption percentage of principal amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 104.406% | 102.938% | 101.469% | 100.00% | 104.50% | 103.875% | 101.938% | 104.00% | 100.00% | 102.00% | 100.00% | 103.00% | 101.50% | 100.00% | 103.6563% | 102.4375% | 100.00% | 100.00% | 105.875% | 106.00% | 107.75% | 108.00% | 104.875% | 101.00% | 101.00% | 101.00% | 101.00% |  |
Redemption percentage of aggregate principal amount authorized to be redeemed at higher percenatge of principal amount |  |  |  |  | 35.00% |  | 35.00% |  |  |  |  |  | 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% |  |  |  |  |  | 65.00% |  |  |  |  |  |  |  |  | 65.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable rate notes, distribution amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Additional indebtedness allowed per debt covenants |  |  | 1,800,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Use of portion of debt proceeds |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,500,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss (gain) on extinguishment of debt | $ 162,000,000 | $ (5,000,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ (108,000,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 162,000,000 | $ (5,000,000)

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