Basis of Presentation and Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Accounting Policies [Line Items]
Debt	$ 7,091		$ 7,096
Fair value of long-term debt	6,500		6,600
Restricted cash	2,481		2,549
Deferred tax credit	46
Accumulated other comprehensive loss	$ 66		70
Icahn Enterprises Holdings
Accounting Policies [Line Items]
Percentage of equity ownership in operating subsidiary	99.00%
Cash held at consolidated affiliated partnerships
Accounting Policies [Line Items]
Restricted cash	$ 568		1,019
Restricted cash
Accounting Policies [Line Items]
Restricted cash	1,913		1,530
Energy Segment
Accounting Policies [Line Items]
Debt	1,590		1,591
Restricted cash	7		7
Remaining performance obligation for contracts with an original expected duration of more than one year	3
Deferred revenue	83		48
Recorded revenue	12	$ 17
Automotive Segment
Accounting Policies [Line Items]
Debt	18		21
Restricted cash	9		$ 10
Deferred revenue	44
Recorded revenue	$ 6	$ 6

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The amount of deferred revenue from tax credit

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Amount of short-term and long-term debt and lease obligation.

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The number of units or percentage investment held in the subsidiary by the limited liability company or limited partnership.

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