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Net Income Per LP Unit (Details) - USD ($) $ / shares in Units, $ in Millions | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jan. 31, 2017 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Earnings Per LP Unit [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net (loss) income attributable to Icahn Enterprises from continuing operations |  |  |  |  |  |  |  |  |  | $ (213) | $ 2,273 | $ (1,127)
Net income (loss) attributable to Icahn Enterprises from discontinued operations |  |  |  |  |  |  |  |  |  | 1,720 | 157 | (1)
Less: net loss attributable to Icahn Enterprises from discontinued operations allocated 100% to general partner |  |  |  |  |  |  |  |  |  | 598 | 0 | 0
Net income (loss) attributable to Icahn Enterprises from discontinued operations allocable to limited partners |  |  |  |  |  |  |  |  |  | $ 2,318 | $ 157 | $ (1)
Basic income (loss) per LP unit: |  |  |  |  |  |  |  |  |  |  |  |
Continuing operations |  | $ (2.28) | $ (0.20) | $ 0.86 | $ 0.58 | $ 1.61 | $ 3.37 | $ 9.04 | $ (0.34) | $ (1.16) | $ 13.84 | $ (8.07)
Discontinued operations |  | 10.31 | 0.88 | 0.84 | 0.19 | 0.11 | 0.16 | 0.47 | 0.22 | 12.62 | 0.96 | 0.00
Basic income (loss) per LP unit |  | 8.03 | 0.68 | 1.70 | 0.77 | 1.72 | 3.53 | 9.51 | (0.12) | $ 11.46 | $ 14.80 | $ (8.07)
Basic weighted average LP units outstanding |  |  |  |  |  |  |  |  |  | 180,000,000 | 161,000,000 | 137,000,000
Diluted income (loss) per LP unit: |  |  |  |  |  |  |  |  |  |  |  |
Continuing operations |  | (2.28) | (0.20) | 0.86 | 0.58 | 1.61 | 3.37 | 9.04 | (0.34) | $ (1.16) | $ 13.84 | $ (8.07)
Discontinued operations |  | 10.31 | 0.88 | 0.84 | 0.19 | 0.11 | 0.16 | 0.47 | 0.22 | 12.62 | 0.96 | 0.00
Diluted income (loss) per LP unit |  | $ 8.03 | $ 0.68 | $ 1.70 | $ 0.77 | $ 1.72 | $ 3.53 | $ 9.51 | $ (0.12) | $ 11.46 | $ 14.80 | $ (8.07)
Diluted weighted average LP units outstanding |  |  |  |  |  |  |  |  |  | 180,000,000 | 161,000,000 | 137,000,000
Units distributed to LP unitholders | 11,171,104 |  |  |  |  |  |  |  |  | 17,778,950 | 17,644,152 | 12,574,723
2017 LTIP units vested |  |  |  |  |  |  |  |  |  | 22,840 | 7,902 |
Limited partners |  |  |  |  |  |  |  |  |  |  |  |
Earnings Per LP Unit [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net (loss) income attributable to Icahn Enterprises from continuing operations |  |  |  |  |  |  |  |  |  | $ (209) | $ 2,228 | $ (1,105)
Net income (loss) attributable to Icahn Enterprises from discontinued operations |  |  |  |  |  |  |  |  |  | $ 2,272 | $ 154 | $ (1)
Limited partners |  |  |  |  |  |  |  |  |  |  |  |
Diluted income (loss) per LP unit: |  |  |  |  |  |  |  |  |  |  |  |
Depositary units issued (value) | $ 600 |  |  |  |  |  |  |  |  |  |  |
General partner |  |  |  |  |  |  |  |  |  |  |  |
Diluted income (loss) per LP unit: |  |  |  |  |  |  |  |  |  |  |  |
Depositary units issued (value) | $ 12 |  |  |  |  |  |  |  |  |  |  |

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