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Net Income Per LP Unit (Details) - USD ($) $ / shares in Units, $ in Millions |  | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
May 02, 2019 | Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Earnings Per LP Unit [Line Items] |  |  |  |  |  |  |  |  |
Net (loss) income attributable to Icahn Enterprises from continuing operations |  |  |  |  |  | $ (1,653) | $ (1,066) | $ (238) |
Net (loss) income attributable to Icahn Enterprises from discontinued operations |  |  |  |  |  |  | (32) | 1,720 |
Less: net loss attributable to Icahn Enterprises from discontinued operations allocated 100% to general partner |  |  |  |  |  |  |  | 598 |
Net (loss) income attributable to Icahn Enterprises from discontinued operations allocable to limited partners |  |  |  |  |  |  | $ (32) | $ 2,318 |
Basic and diluted (loss) income per LP unit: |  |  |  |  |  |  |  |  |
Continuing operations |  |  |  |  |  | $ (7.33) | $ (5.23) | $ (1.29) |
Discontinued operations |  |  |  |  |  |  | (0.15) | 12.62 |
Basic and diluted (loss) income per LP unit |  |  |  |  |  | $ (7.33) | $ (5.38) | $ 11.33 |
Basic and diluted weighted average LP units outstanding |  |  |  |  |  | 221,000,000 | 200,000,000 | 180,000,000 |
Limited partners: Depositary units issued |  | 241,338,835 |  |  |  | 241,338,835 | 214,078,558 | 191,366,097 | 173,564,307
Units distributed to LP unitholders |  |  |  |  |  | 25,352,178 | 21,898,853 | 17,778,950 |
2017 LTIP units vested |  |  |  |  |  |  | 19,259 | 22,840 |
Partners' Capital Account, Units, Sale of Units |  |  |  |  |  | 1,908,099 | 794,349 |  |
Aggregate cash distributions to depositary unit holders |  | $ 33 | $ 31 | $ 30 | $ 422 | $ 516 |  |  |
Potential aggregate sales proceeds from equity offering | $ 400 |  |  |  |  | 244 |  |  |
Proceeds from Sale of Interest in Partnership Unit |  |  |  |  |  | 101 | $ 55 |  |
Limited partners |  |  |  |  |  |  |  |  |
Earnings Per LP Unit [Line Items] |  |  |  |  |  |  |  |  |
Net (loss) income attributable to Icahn Enterprises from continuing operations |  |  |  |  |  | $ (1,620) | (1,045) | $ (233) |
Net (loss) income attributable to Icahn Enterprises from discontinued operations |  |  |  |  |  |  | $ (31) | $ 2,272 |
Mr. Icahn and affiliates |  |  |  |  |  |  |  |  |
Basic and diluted (loss) income per LP unit: |  |  |  |  |  |  |  |  |
Limited partners: Depositary units issued |  | 221,749,462 |  |  |  | 221,749,462 | 197,049,652 | 175,441,588 | 157,898,582
Units distributed to LP unitholders |  |  |  |  |  | 24,902,568 | 21,608,064 | 17,543,006 |
Mr. Icahn and affiliates | Brett Icahn |  |  |  |  |  |  |  |  |
Basic and diluted (loss) income per LP unit: |  |  |  |  |  |  |  |  |
Partners' Capital Account, Units, Trasfer of Units |  |  |  |  |  | (202,758) |  |  |
Public unitholders |  |  |  |  |  |  |  |  |
Basic and diluted (loss) income per LP unit: |  |  |  |  |  |  |  |  |
Limited partners: Depositary units issued |  | 19,589,373 |  |  |  | 19,589,373 | 17,028,906 | 15,924,509 | 15,665,725
Units distributed to LP unitholders |  |  |  |  |  | 449,610 | 290,789 | 235,944 |
2017 LTIP units vested |  |  |  |  |  |  | 19,259 | 22,840 |
Partners' Capital Account, Units, Sale of Units |  |  |  |  |  | 1,908,099 | 794,349 |  |
Public unitholders | Brett Icahn |  |  |  |  |  |  |  |  |
Basic and diluted (loss) income per LP unit: |  |  |  |  |  |  |  |  |
Partners' Capital Account, Units, Trasfer of Units |  |  |  |  |  | 202,758 |  |  |

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