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Maximum fees payable under the agreement for minimum quantities of carbon dioxide supply.

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Threshold fees per year under the agreement for minimum quantities of carbon dioxide supply.

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Ownership percentage by principal owner in related party

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Represents the information pertaining to renewable fuel standard obligation (RFS).

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Subsidiary Indemnity Agreement, Pension Funding Contingencies As A Result of Being In The Controlled Group, Distribution Limitation, Net Worth Floor

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- Definition

Amount of funded (unfunded) status of defined benefit plan, measured as difference between fair value of plan assets and benefit obligation. Includes, but is not limited to, overfunded (underfunded) status.

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Percentage investment held by members or limited partners of limited liability company (LLC) or limited partnership (LP).

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Commitments and Contingencies - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Dec. 31, 2025	Jan. 31, 2023
Commitments and Contingencies
Minimum Carbon Dioxide Supply			$ 15
Maximum fee payable			$ 45
Energy
Commitments and Contingencies
RFS position	$ 204	$ 72
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	$ 19
ACF \| Icahn Enterprises Holdings \| Minimum
Commitments and Contingencies
Ownership percentage by principal owner	80.00%
Starfire Holding Corporation
Commitments and Contingencies
Ownership percentage by principal owner	99.60%
Pension funding indemnity agreement with subsidiary	$ 250