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Net Income Per LP Unit (Details) (USD $) In Millions, except Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended | 0 Months Ended |  | 1 Months Ended |  | 12 Months Ended | 0 Months Ended | 12 Months Ended | 1 Months Ended | 0 Months Ended | 12 Months Ended | 0 Months Ended | 12 Months Ended
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Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Jan. 13, 2014 Common Stock [Member] | Oct. 09, 2013 Common Stock [Member] | Jul. 05, 2013 Common Stock [Member] | Apr. 16, 2013 Common Stock [Member] | Feb. 11, 2013 Common Stock [Member] | Dec. 31, 2013 Common Stock [Member] | Jan. 20, 2012 Depositary Units [Member] | Dec. 27, 2011 Depositary Units [Member] | Dec. 31, 2013 Icahn Enterprises G.P. [Member] | Feb. 28, 2014 Principal Owners and Affiliates [Member] | Dec. 31, 2013 Principal Owners and Affiliates [Member] | Jan. 20, 2012 Principal Owners and Affiliates [Member] Depositary Units [Member] | Dec. 09, 2013 Limited partners Common Stock [Member] | Jun. 12, 2013 Limited partners Common Stock [Member] | Feb. 28, 2013 Limited partners Common Stock [Member] | Dec. 31, 2013 Limited partners Common Stock [Member] | Feb. 25, 2014 Limited partners Dividend Declared [Member] Common Stock [Member] | Nov. 01, 2013 Limited partners Dividend Declared [Member] Common Stock [Member] | Aug. 06, 2013 Limited partners Dividend Declared [Member] Common Stock [Member] | Apr. 29, 2013 Limited partners Dividend Declared [Member] Common Stock [Member] | Dec. 31, 2013 General partner
Earnings Per LP Unit [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) attributable to Icahn Enterprises |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,025 | $ 396 |  | $ 750 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income attributable to parent, allocated to general partner before traditional parntership allocation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | (9) | [1] | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income attributable to Icahn Enterprises, subject to allocation amongst partners |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,025 | 387 |  | 750 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Limited partners |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,005 | 379 |  | 735 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income attributable to Icahn Enterprises allocable to limited partners (98.01% allocation) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 735 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic income per LP unit | $ 1.91 | [2] | $ 4.13 | [2] | $ 0.48 | [2] | $ 2.56 | [2] | $ 0.05 | [2],[3] | $ 0.75 | [2],[3] | $ 2.44 | [2],[3] | $ 0.48 | [2],[3] | $ 9.14 | $ 3.72 |  | $ 8.35 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic weighted average LP units outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 110,000,000 | 102,000,000 |  | 88,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dilutive securities, effect on earnings per unit from converison of debt securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 | 0 |  | 23 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dilutive effect of variable rate convertible notes, Units |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,000,000 | 0 |  | 5,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Diluted income per LP unit | $ 1.90 | [2] | $ 4.10 | [2] | $ 0.48 | [2] | $ 2.50 | [2] | $ 0.05 | [2],[3] | $ 0.75 | [2],[3] | $ 2.37 | [2],[3] | $ 0.48 | [2],[3] | $ 9.07 | $ 3.72 |  | $ 8.15 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Diluted weighted average LP units outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 111,000,000 | 102,000,000 |  | 93,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Antidilutive securities excluded from computation of earnings per unit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rights received per depositary unit held |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.15881 |  |  |  |  |  |  |  |  |  |  |  |  |
Rights' subscription price per depositary unit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 36.7933 |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate depositary units distributed in connection with rights offering |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 13,590,238 |  |  |  |  | 12,995,584 |  |  |  |  |  |  |  |  |
Proceeds from rights offering |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 500 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,000,000 | 1,600,000 | 3,174,604 |  |  |  |  |  |
Development Stage Entities, Equity Issuance, Per Share Amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 135.00 | $ 75.54 | $ 63.00 |  |  |  |  |  |
Underwriter option to purchase additional depositary units |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 300,000 | 240,000 | 476,191 |  |  |  |  |  |
Proceeds from Issuance or Sale of Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 581 |  |  |  |  |
Partnership contributions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 593 | 513 |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12
General partner ownership percentage in Icahn Enterprises |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.00% |  |  |  |  |  |  |  |  |  |  |  |
Common Stock, Dividends, Per Share, Declared |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1.00 |  |  |  |  |  |  |  |  |  |  |  | $ 1.50 | $ 1.25 | $ 1.25 | $ 1.00 |
Units issued as a unit distribution |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,001,617 | 1,515,739 | 1,237,191 | 1,521,962 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Affiliate ownership interest in Icahn Enterprises |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 88.00% | 87.90% |  |  |  |  |  |  |  |  |  |
Dividends Payable |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 142 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
[1] | Amount represents net income allocable to the general partner for the period May 5, 2012 through August 23, 2012, the period in which Mr. Icahn and his affiliates' ownership in IEP Energy, other than Icahn Enterprises' ownership, were considered under common control. On August 24, 2012, Mr. Icahn and his affiliates contributed this interest to us in exchange for our depositary units.
[2] | Basic and diluted income per LP unit is computed separately for each quarter and therefore, the sum of such quarterly per LP unit amounts may differ from the total for the year.
[3] | We consolidated the results of CVR effective May 5, 2012.

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