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Commitments and Contingencies - Narrative (Details) - USD ($) $ in Millions |  |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | ---
Mar. 30, 2022 | Jan. 27, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021
Starfire Holding Corporation |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Ownership percentage by principal owner |  |  | 99.60% |  | 99.60% |  |
Pension funding indemnity agreement with subsidiary |  |  | $ 250.0 |  | $ 250.0 |  |
ACF |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Funded status of related party pension plan |  |  | 82.0 |  | $ 82.0 |  |
Mr. Icahn and affiliates | Icahn Enterprises G.P. |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Affiliate ownership in parent company general partner |  |  |  |  | 100.00% |  |
Mr. Icahn and affiliates | Icahn Enterprises Holdings |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Affiliate ownership interest |  |  |  |  | 86.00% |  |
Energy Segment |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Environmental loss contingency accrual |  |  | 24.0 |  | $ 24.0 |  | $ 12.0
Amount of quantifying alleged damages in excess | $ 6.8 |  |  |  |  |  |
Price of RINs |  |  | 153.0 | $ 173.0 | 259.0 | $ 351.0 |
RFS position |  |  | 708.0 |  | 708.0 |  | 494.0
Insurance policies coverage limits |  | $ 50.0 |  |  |  |  |
Energy Segment | Call option lawsuits |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Litigation settlement paid |  |  |  |  | 79.0 |  |
Accrued expenses and other liabilities |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Environmental loss contingency accrual |  |  | $ 25.0 |  | 25.0 |  | $ 13.0
Accrued expenses and other liabilities | Energy Segment | Call option lawsuits |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Litigation settlement paid |  |  |  |  | $ 79.0 |  |

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