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Net Income Per LP Unit (Details) (USD $) In Millions, except Share data, unless otherwise specified | 3 Months Ended | 0 Months Ended |  | 3 Months Ended | 0 Months Ended | 3 Months Ended | 0 Months Ended | 3 Months Ended
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Mar. 31, 2014 | Mar. 31, 2013 | Apr. 22, 2014 Depositary units [Member] | Feb. 25, 2014 Depositary units [Member] | Mar. 31, 2014 Depositary units [Member] | Mar. 31, 2014 Icahn Enterprises G.P. [Member] | May 06, 2014 Principal Owners and Affiliates [Member] | Mar. 31, 2014 Principal Owners and Affiliates [Member] | Feb. 28, 2013 Limited partners Depositary units [Member] | Mar. 31, 2014 Limited partners Depositary units [Member] | Mar. 31, 2014 General partner
Earnings Per LP Unit [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net (loss) income attributable to Icahn Enterprises | $ (29) | $ 277 |  |  |  |  |  |  |  |  |
Net (loss) income attributable to Icahn Enterprises allocable to limited partners (98.01% allocation) | (28) | 271 |  |  |  |  |  |  |  |  |
Basic (loss) income per LP unit | $ (0.24) | $ 2.56 |  |  |  |  |  |  |  |  |
Basic weighted average LP units outstanding | 117,000,000 | 106,000,000 |  |  |  |  |  |  |  |  |
Dilutive effect of variable rate convertible notes (income) |  | 2 |  |  |  |  |  |  |  |  |
Dilutive effect of variable rate convertible notes (units) |  | 2,000,000 |  |  |  |  |  |  |  |  |
Dilutive effect of unit distribution declared (income) | 0 |  |  |  |  |  |  |  |  |  |
Dilutive effect of unit distribution declared (units) | 0 |  |  |  |  |  |  |  |  |  |
Diluted (loss) income per LP unit | $ (0.24) | $ 2.50 |  |  |  |  |  |  |  |  |
Diluted weighted average LP units outstanding | 117,000,000 | 109,000,000 |  |  |  |  |  |  |  |  |
Units issues in connection with equity offering (ones) |  |  |  |  |  |  |  |  | 3,174,604 |  |
Equity offering per share amount (ones) |  |  |  |  |  |  |  |  | $ 63.00 |  |
Underwriter option to purchase additional depositary units |  |  |  |  |  |  |  |  | 476,191 |  |
Proceeds from equity offering | 0 | 556 |  |  |  |  |  |  |  | 194 |
Proceeds from equity offerings | 0 | 198 |  |  |  |  |  |  |  |  | 4
General partner ownership percentage in Icahn Enterprises |  |  |  |  |  | 1.00% |  |  |  |  |
Distribution declared per depositary unit |  |  |  | $ 1.50 |  |  |  |  |  |  |
Distribution Made to Limited Partner, Unit Distribution |  |  | 1,574,448 |  |  |  |  |  |  |  |
Affiliate ownership interest in Icahn Enterprises |  |  |  |  |  |  | 88.10% | 88.00% |  |  |
Distribution payable |  |  |  |  | $ 175 |  |  |  |  |  |

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