Delek US Holdings, Inc. operates as an integrated downstream energy company that operates in petroleum refining, wholesale distribution, and convenience store retailing businesses. The company operates in three segments: Refining, Logistics, and Retail. The Refining segment owns and operates two refineries in Tyler, Texas, and El Dorado, Arkansas; and produces various petroleum-based products used in transportation and industrial markets. This segment offers a range of products, such as gasoline, diesel, jet fuels, liquefied petroleum gas, and natural gas liquids, as well as biodiesel blended products. The Logistics segment gathers, transports, and stores crude oil and intermediate products, as well as markets, distributes, transports, and stores refined products. It also offers crude oil transportation services, terminalling, and wholesale marketing services to third parties in Texas, Tennessee, and Arkansas; and markets light products using third-party terminals. This segment owns approximately 400 miles of crude oil transportation pipelines, 245 miles of active refined product pipelines, 600-mile crude oil gathering system, and associated crude oil storage tanks with an aggregate of approximately 8.1 million barrels of active shell capacity. The Retail segment markets gasoline, diesel, and other refined petroleum products, as well as convenience merchandise. As of November 4, 2015, this segment operated a network of approximately 355 company-operated convenience store locations under the MAPCO Express, MAPCO Mart, East Coast, Fast Food and Fuel, Favorite Markets, Delta Express, and Discount Food Mart brands. The company serves oil companies, independent refiners and marketers, jobbers, distributors, utility and transportation companies, independent retail fuel operators, and the United States government. Delek US Holdings, Inc. was founded in 2001 and is headquartered in Brentwood, Tennessee.