CF Industries Holdings, Inc. engages in the manufacture and distribution of nitrogen fertilizer. The firm owns and operates nitrogen plants and serves agricultural and industrial customers through its distribution system. It operates through the following segments: Ammonia, Granular Urea, UAN, AN, and Other. The Ammonia segment produces anhydrous ammonia. The Granular Urea segment offers granular urea. The UAN segment focuses on urea ammonium nitrate solution. The AN segment refers to the production of ammonium nitrate. The Other segment includes diesel exhaust fluid, nitric acid, urea liquor, and aqua ammonia. The company was founded in 1946 and is headquartered in Northbrook, IL.