The second incarnation of CBS Corporation was an American multinational media company with interests primarily in commercial broadcasting, publishing, and television production. It was formed on January 1, 2006, as the legal successor of the original Viacom, following the spin-off of the second incarnation of Viacom; both CBS Corporation and the second Viacom were controlled by National Amusements, a theater company owned by billionaire Sumner Redstone.