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Commitments and Contingencies - Narrative (Details) item in Millions, $ in Millions |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Aug. 22, 2025 USD ($) item | Aug. 31, 2025 USD ($) plaintiff | Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Dec. 31, 2024 USD ($) | Jan. 31, 2023 USD ($)
Commitments and Contingencies |  |  |  |  |  |  |  |
Environmental loss contingency accrual |  |  | $ 3 |  | $ 3 |  | $ 3 |
Value of reduction in renewable fuel credits | $ 488 |  |  |  |  |  |  |
Minimum Carbon Dioxide Supply |  |  |  |  |  |  |  | $ 15
Maximum fee payable |  |  |  |  |  |  |  | $ 45
Number of Plaintiffs | plaintiff |  | 3 |  |  |  |  |  |
Amount of quantifying alleged damages |  | $ 60 |  |  |  |  |  |
Minimum |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |
Reduction in renewable fuel credits | item | 424 |  |  |  |  |  |  |
Energy |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |
Expense (benefit) |  |  | (417) | $ 86 | (171) | $ 65 |  |
RFS position |  |  | 93 |  | $ 93 |  | $ 323 |
Mr. Icahn and affiliates | Minimum |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |
Affiliate ownership interest |  |  |  |  | 80.00% |  |  |
Icahn Enterprises G.P. | Mr. Icahn and affiliates |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |
Affiliate ownership in parent company general partner |  |  |  |  | 100.00% |  |  |
Icahn Enterprises Holdings | Mr. Icahn and affiliates |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |
Affiliate ownership interest |  |  |  |  | 86.00% |  |  |
ACF |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |
Funded status of related party pension plan |  |  | $ 21 |  | $ 21 |  |  |
ACF | Icahn Enterprises Holdings | Minimum |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |
Ownership percentage by principal owner |  |  | 80.00% |  | 80.00% |  |  |
Starfire Holding Corporation |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |
Ownership percentage by principal owner |  |  | 99.60% |  | 99.60% |  |  |
Pension funding indemnity agreement with subsidiary |  |  | $ 250 |  | $ 250 |  |  |

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