Icahn Enterprises L.P., through its subsidiaries engages in the investment, energy, automotive, food packaging, real estate, home fashion and pharma in the United States and internationally. The Investment segment invests its proprietary capital through various private investment funds; and it provides investment advisory, administrative, and back-office services to the investment funds. The Energy segment engages in refining and marketing of petroleum in the form of gasoline, diesel, jet fuel, and distillates; renewable fuels refine renewable feedstocks, such as soybean oil, corn oil, and other related renewable feedstocks into renewable diesel and markets renewable products; and nitrogen fertilizer produces and markets nitrogen fertilizers in the form of urea ammonium nitrate and ammonia. The Automotive segment engages in repair and maintenance of automotive; sale of installed parts or materials related to automotive services; and sale of automotive aftermarket parts and retailed merchandise.