YUM! Brands, Inc., together with its subsidiaries, develops, operates, and franchises quick service restaurants worldwide. It operates in three segments: the KFC Division, the Pizza Hut Division, and the Taco Bell Division. The company operates restaurants under the KFC, Pizza Hut, and Taco Bell brands, which specialize in chicken, pizza, and Mexican-style food categories. As of December 31, 2018, it had 22,621 KFC units; 18,431 Pizza Hut units; and 7,072 Taco Bell units in approximately 140 countries and territories. The company was formerly known as TRICON Global Restaurants, Inc. and changed its name to YUM! Brands, Inc. in May 2002. YUM! Brands, Inc. was incorporated in 1997 and is headquartered in Louisville, Kentucky.