at this time. CBS Corp was acquired by Viacom in 1999, a merger completed in April 2000. The CBS Corporation name was later reused for one of the two companies resulting from the split of Viacom in 2005.

One of the few remaining original lines of business to survive this process was the nuclear power division, which was sold to BNFL in 1999 and re-formed as Westinghouse Electric Company.