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Net Income Per LP Unit (Details) - USD ($) $ / shares in Units, $ in Millions |  |  |  |  |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Aug. 05, 2015 | Jun. 30, 2015 | May. 05, 2015 | Apr. 22, 2015 | Feb. 20, 2015 | Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014
Earnings Per LP Unit [Line Items] |  |  |  |  |  |  |  |  |
Net income attributable to Icahn Enterprises |  |  |  |  |  | $ 212 | $ 489 | $ 373 | $ 460
Net income attributable to Icahn Enterprises allocable to limited partners (98.01% allocation) |  |  |  |  |  | $ 208 | $ 479 | $ 366 | $ 451
Basic and diluted income per LP unit |  |  |  |  |  | $ 1.68 | $ 4.06 | $ 2.95 | $ 3.85
Basic and diluted weighted average LP units outstanding |  |  |  |  |  | 124,000,000 | 118,000,000 | 124,000,000 | 117,000,000
Distribution declared per depositary unit |  |  | $ 1.50 |  | $ 1.50 |  |  |  |
Depositary units [Member] |  |  |  |  |  |  |  |  |
Earnings Per LP Unit [Line Items] |  |  |  |  |  |  |  |  |
Distribution Made to Limited Partner, Unit Distribution |  | 1,825,930 |  | 1,713,935 |  |  |  |  |
Mr. Icahn and his affiliates [Member] |  |  |  |  |  |  |  |  |
Earnings Per LP Unit [Line Items] |  |  |  |  |  |  |  |  |
Affiliate ownership interest in Icahn Enterprises |  |  |  |  |  |  |  | 88.70% |
Ownership percentage [Member] | Mr. Icahn and his affiliates [Member] |  |  |  |  |  |  |  |  |
Earnings Per LP Unit [Line Items] |  |  |  |  |  |  |  |  |
Affiliate ownership interest in Icahn Enterprises | 88.70% |  |  |  |  |  |  |  |

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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 + Details
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- Definition Number of units distributed for payment of a unit distribution to unit-holder of limited partnership (LP). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 272 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70434-108055 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 272 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055 + Details
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