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Net Income (Loss) Per LP Unit (Details) - USD ($) $ / shares in Units, $ in Millions |  | 1 Months Ended | 3 Months Ended |  |
--- | --- | --- | --- | --- | ---
Feb. 26, 2024 | Apr. 30, 2024 | Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023 | May 09, 2023
Net Income (Loss) Per LP Unit [Line Items] |  |  |  |  |  |
Net Income (Loss) |  |  | $ (38) | $ (270) |  |
Net (loss) income attributable to Icahn Enterprises allocated to limited partners (98.01% allocation) |  |  | $ (37) | $ (265) |  |
Basic loss per LP unit (in dollars per share) |  |  | $ (0.09) | $ (0.75) |  |
Basic weighted average LP units outstanding (in shares) |  |  | 429,000,000 | 354,000,000 |  |
Diluted loss per LP unit (in dollars per share) |  |  | $ (0.09) | $ (0.75) |  |
Diluted weighted average LP units outstanding (in shares) |  |  | 429,000,000 | 354,000,000 |  |
Aggregate cash distributions to depositary unit holders |  | $ 97 |  |  |  |
Limited partners: Depositary units issued |  | 431,808,850 | 429,033,241 |  |  |
Partners' Capital Account, Units, Sale of Units |  |  | 2,775,609 |  |  |
Limited partners: Depositary units issued |  |  | 431,808,850 |  |  |
Proceeds from Sale of Interest in Partnership Unit |  |  | $ 50 |  |  |
Potential aggregate sales proceeds from equity offering |  |  | $ 99 |  |  |
Repurchase amount |  |  |  |  | $ 92 |
Antidilutive securities excluded from computation of earnings per share |  |  | 10,000,000 | 6,000,000 |  |
Fixed-rate senior unsecured notes, repurchase program authorized amount |  |  |  |  |  | $ 500
Depositary units, repurchase program authorized amount |  |  |  |  |  | $ 500
Repurchased senior notes |  |  | $ 92 |  |  |
Limited partners |  |  |  |  |  |
Net Income (Loss) Per LP Unit [Line Items] |  |  |  |  |  |
Units distributed to LP unitholders |  | 19,186,659 |  |  |  |
Distributions liability | $ 439 |  |  |  |  |
Amount of distribution per share | $ 1.00 |  |  |  |  |
Mr. Icahn and affiliates |  |  |  |  |  |
Net Income (Loss) Per LP Unit [Line Items] |  |  |  |  |  |
Aggregate cash distributions to depositary unit holders |  | $ 55 |  |  |  |
Units distributed to LP unitholders |  | 18,016,077 |  |  |  |
Icahn Enterprises Holdings LP |  |  |  |  |  |
Net Income (Loss) Per LP Unit [Line Items] |  |  |  |  |  |
Affiliate ownership interest |  |  | 98.01% |  |  |

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