NBCUniversal (colloquially referred to as NBCU or NBCUni) is an American media and entertainment company engaged in the production and marketing of entertainment, news, and information products and services to a global customer base. The company owns and operates American television networks, numerous cable channels, and a group of local stations in the United States, as well as motion picture companies, several television production companies, and branded theme parks. It is the world's largest mass media group.