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Debt Narrative - Senior Unsecured Notes - Icahn Enterprises Holdings (Details) (Senior unsecured notes [Member], USD $)
 0 Months Ended 0 Months Ended 6 Months Ended 12 Months Ended 0 Months Ended 1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended 6 Months Ended 12 Months Ended 6 Months Ended 12 Months Ended 6 Months Ended 12 Months Ended 6 Months Ended 12 Months Ended 6 Months Ended 12 Months Ended 6 Months Ended 12 Months Ended 6 Months Ended 12 Months Ended 6 Months Ended 12 Months Ended 6 Months Ended 12 Months Ended 0 Months Ended
Jan. 15, 2010
Jun. 30, 2012
Dec. 31, 2011
Jan. 15, 2010
Initial Notes [Member]
Jun. 30, 2012
Initial Notes [Member]
Dec. 31, 2011
Initial Notes [Member]
Jan. 15, 2010
7.75% senior unsecured notes due 2016 [Member]
Feb. 06, 2012
8% senior unsecured notes due 2018 - Icahn Enterprises Holdings [Member]
Jan. 15, 2010
8% senior unsecured notes due 2018 - Icahn Enterprises Holdings [Member]
Nov. 12, 2010
2010 Additional Notes [Member]
Nov. 12, 2010
2016 Additional Notes [Member]
Nov. 12, 2010
2018 Notes Additional [Member]
Feb. 06, 2012
2012 Additional Notes [Member]
Jun. 30, 2012
Variable Rate Senior Unsecured Convertible Notes [Member]
Jun. 30, 2012
Variable Rate Senior Unsecured Convertible Notes [Member]
Jun. 30, 2011
Variable Rate Senior Unsecured Convertible Notes [Member]
Dec. 31, 2011
Variable Rate Senior Unsecured Convertible Notes [Member]
Mar. 30, 2012
Variable Rate Senior Unsecured Convertible Notes [Member]
May 31, 2011
Variable Rate Senior Unsecured Convertible Notes [Member]
Oct. 05, 2008
Variable Rate Senior Unsecured Convertible Notes [Member]
Apr. 30, 2007
Variable Rate Senior Unsecured Convertible Notes [Member]
Apr. 05, 2007
Variable Rate Senior Unsecured Convertible Notes [Member]
Jun. 30, 2012
Debt repurchase date range, from January 15, 2013 to January 14, 2014 [Member]
7.75% senior unsecured notes due 2016 [Member]
Dec. 31, 2011
Debt repurchase date range, from January 15, 2013 to January 14, 2014 [Member]
7.75% senior unsecured notes due 2016 [Member]
Jun. 30, 2012
Debt repurchase date range, from January 15, 2014 to January 14, 2015 [Member]
7.75% senior unsecured notes due 2016 [Member]
Dec. 31, 2011
Debt repurchase date range, from January 15, 2014 to January 14, 2015 [Member]
7.75% senior unsecured notes due 2016 [Member]
Jun. 30, 2012
Debt repurchase date range, from January 15, 2014 to January 14, 2015 [Member]
8% senior unsecured notes due 2018 - Icahn Enterprises Holdings [Member]
Dec. 31, 2011
Debt repurchase date range, from January 15, 2014 to January 14, 2015 [Member]
8% senior unsecured notes due 2018 - Icahn Enterprises Holdings [Member]
Jun. 30, 2012
Debt repurchase date range, on or after January 15, 2015 [Member]
7.75% senior unsecured notes due 2016 [Member]
Dec. 31, 2011
Debt repurchase date range, on or after January 15, 2015 [Member]
7.75% senior unsecured notes due 2016 [Member]
Jun. 30, 2012
Debt repurchase date range, from January 15, 2015 to January 14, 2016 [Member]
8% senior unsecured notes due 2018 - Icahn Enterprises Holdings [Member]
Dec. 31, 2011
Debt repurchase date range, from January 15, 2015 to January 14, 2016 [Member]
8% senior unsecured notes due 2018 - Icahn Enterprises Holdings [Member]
Jun. 30, 2012
Debt repurchase date range, on or after January 15, 2016 [Member]
8% senior unsecured notes due 2018 - Icahn Enterprises Holdings [Member]
Dec. 31, 2011
Debt repurchase date range, on or after January 15, 2016 [Member]
8% senior unsecured notes due 2018 - Icahn Enterprises Holdings [Member]
Jun. 30, 2012
Debt repurchase percentage of principal amount authorized pursuant to additional requirements [Member]
7.75% senior unsecured notes due 2016 [Member]
Dec. 31, 2011
Debt repurchase percentage of principal amount authorized pursuant to additional requirements [Member]
7.75% senior unsecured notes due 2016 [Member]
Jun. 30, 2012
Debt repurchase percentage of principal amount authorized pursuant to additional requirements [Member]
8% senior unsecured notes due 2018 - Icahn Enterprises Holdings [Member]
Dec. 31, 2011
Debt repurchase percentage of principal amount authorized pursuant to additional requirements [Member]
8% senior unsecured notes due 2018 - Icahn Enterprises Holdings [Member]
Jun. 30, 2012
Debt repurchase percentage of principal amount authorized if change of control [Member]
Initial Notes [Member]
Dec. 31, 2011
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]
Jul. 12, 2012
Issuance of Debt [Member]
8% senior unsecured notes due 2018 - Icahn Enterprises Holdings [Member]
Debt Instrument [Line Items]                                                                                      
Aggregate principal amount issued, long-term debt             $ 850,000,000 $ 700,000,000 $ 1,150,000,000   $ 200,000,000 $ 300,000,000 $ 700,000,000               $ 600,000,000                                           $ 300,000,000
Interest rate, long-term debt             7.75%   8.00%                                                                   8.00%
Gross proceeds from sale of senior unsecured notes       1,987,000,000           512,000,000     716,000,000                                                           314,000,000
Extinguishment of Debt, Amount 1,280,000,000                                                                                    
Percentage of notes tendered 97.00%                                                                                    
Redemtion percentage of principal amount                                             103.875% 103.875% 101.938% 101.938% 104.00% 104.00% 100.00% 100.00% 102.00% 102.00% 100.00% 100.00% 107.75% 107.75% 108.00% 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% 4.00%   4.00%                                               4.00% 5.50%  
Variable rate notes conversion price per depositary unit                                   $ 102.75 $ 103.95 $ 105.00   $ 132.595                                          
Variable rate notes, principal amount converted per depositary unit                                   1,000 1,000 1,000   1,000                                          
Variable rate notes, depositary unit, maximum dividends, per share, declared, before matching distribution to variable rate noteholders required                             $ 0.10   $ 0.10                                                    
Variable rate notes, distribution amount                           0 0 1,000,000                                                      
Additional indebtedness allowed per debt covenants   $ 1,500,000,000 $ 1,300,000,000