Bertelsmann AG, based in Gutersloh, Germany, is a global media company that encompasses the RTL Group, Random House, Gruner + Jahr, BMG, Arvato, and Direct Group businesses. RTL Group, based in Luxembourg, is the leading broadcaster in Europe. Television programming reaches 170 million viewers. The company is known for its RTL Television, Super RTL, Vox, M6, Five, Antena, RTL 4, RTL TVI, and RTL Klub channels. RTL Group also includes Radio Luxembourg and the Fremantle Media content production business. Random House, based in New York, is the largest book publishing firm in the world. It encompasses Doubleday, Alfred A. Knopf, Plaza & Janes, Goldmann, and over 100 other imprints. Gruner + Jahr, based in Hamburg, Germany, produces 'Stern,' 'The Financial Times Deutschland,' and over 280 other magazines worldwide. Bertelsmann's BMG unit holds a joint venture stake in Sony BMG Music Entertainment, based in New York. BMG and Sony Music Entertainment merged in 2004, forming the company. The firm includes Arista, Columbia Records, Epic, RCA, and other labels. Bertelsmann's Arvato provides clients with media and communications services. Direct Group is a media sales distribution business. It establishes media clubs and online stores. Bertelsmann has offices in 50 countries. Ninety percent of revenues are generated through operations in Western Europe and the United States. The company is expanding operations in Eastern Europe and Asia.