Valero Energy is a multinational manufacturer and marketer of petroleum-based and low-carbon liquid transportation fuels and petrochemical products. Co.'s operations are managed through the following segments: Refining, which includes the operations of its petroleum refineries, the associated activities to market its refined petroleum products, and the logistics assets that support those operations; Renewable Diesel, which includes the operations of its subsidiary, Diamond Green Diesel Holdings LLC, and the associated activities to market renewable diesel; and Ethanol, which includes the operations of its ethanol plants and the associated activities to market its ethanol and co-products.