Merger with CBS and Viacom
As a result of the Telecommunications Act of 1996, which loosened ownership restrictions of broadcast stations, Infinity was able to quickly acquire more stations, gradually increasing its portfolio to 75 stations.
In 1996, it was announced that Westinghouse Electric Corporation (which owned CBS) would acquire Infinity Broadcasting. Karmazin had attempted to acquire CBS, but Michael Jordan, CEO of Westinghouse, refused to sell the firm to Karmazin but instead agreed to buy Infinity. The $4.9 billion deal was completed on December 31, 1996.[3] As a result of the Westinghouse purchase, Infinity was merged into the CBS Radio Group, with Karmazin as president. Karmazin soon became chairman and CEO of CBS Radio, and took the control of the CBS television network.
Shortly after, Westinghouse sold its non-broadcasting assets and renamed itself as CBS Corporation. In 1998, CBS decided to spin off a portion of its radio and outdoor advertising holdings as Infinity Broadcasting Corporation, once again bringing the Infinity name back to the public. The stock offering was the largest in the media industry at the time and raised $2.87 billion.
The most significant move during 1999, however, was the deal struck with Viacom in September. Sumner Redstone, CEO of Viacom, shot down Karmazin's offer to buy Viacom. Karmazin then offered CBS to Redstone, who eventually made a $37 billion proposal to merge the two companies. Viacom completed the CBS Corp. purchase in May 2000, and it retained 80% ownership of Infinity. In that same year, Infinity acquired Outdoor Systems and renamed it Infinity Outdoor.
Under the new ownership by Viacom, Infinity acquired 18 radio stations from its competitor, Clear Channel Communications (now iHeartMedia), which needed to divest them as part of its own merger with AMFM Incorporated. The company also purchased Giraudy SA, an outdoor advertising company based in France. In 2002, Viacom acquired the remaining shares of Infinity that it did not already own, making it a wholly owned subsidiary. At that time, Infinity Outdoor was separated from Infinity Broadcasting and renamed Viacom Outdoor.