Anheuser-Busch Companies, LLC is an American brewing company headquartered in St. Louis, Missouri. Since 2008, it has been a wholly owned subsidiary of Anheuser-Busch InBev (AB InBev) which also has its North American regional management headquarters in St. Louis.The original Anheuser-Busch InBev (AB InBev) was formed through successive mergers of three international brewing groups: Interbrew from Belgium, AmBev from Brazil and Anheuser-Busch. Hence, since 2008, Anheuser-Busch has been a division of Anheuser-Busch InBev SA/NV, now the world's largest brewing company.The company employs over 30,000 people, operates 12 breweries in the United States, and until December 2009, was one of the largest theme park operators in the United States, with ten theme parks through the company's family entertainment division, Busch Entertainment Corporation.Anheuser-Busch InBev is the largest beer producer in the world.