Description of Business (Details) $ in Billions	3 Months Ended
	Mar. 31, 2024 USD ($) country product item
Description of Business [Line Items]
Number of Country Clubs Operated | country	2
Icahn Enterprises Holdings
Description of Business [Line Items]
Percentage of equity ownership in operating subsidiary	99.00%
Icahn Enterprises Holdings | Icahn Enterprises G.P.
Description of Business [Line Items]
General partner ownership percentage in Icahn Enterprises	1.00%
Icahn Enterprises Holdings | Mr. Icahn and affiliates
Description of Business [Line Items]
Affiliate ownership interest	85.00%
Icahn Enterprises G.P.
Description of Business [Line Items]
Aggregate general partner ownership interest of parent and operating subsidiary	1.99%
CVR Refining
Description of Business [Line Items]
Percentage of equity ownership in operating subsidiary	37.00%
CVR Energy | Energy
Description of Business [Line Items]
Percentage of equity ownership in operating subsidiary	66.00%
Viskase | Private Placement
Description of Business [Line Items]
Percentage of equity ownership in operating subsidiary	90.00%
Investment Funds
Description of Business [Line Items]
Fair value of investment in subsidiary | $	$ 3.2
CVR Partners | CVR Energy
Description of Business [Line Items]
Percentage of equity ownership in operating subsidiary	100.00%
Vivus | Pharma
Description of Business [Line Items]
Number of approved therapies	2
Number of product candidates in active clinical development	2
Number of product candidates | product	2