Shari Redstone helped build Paramount Global into a media empire, but if Sony Pictures Entertainment and the private-equity giant Apollo Global Management succeed in acquiring it, they plan to break it all up, according to three people familiar with the matter. The plan would include auctioning off CBS, cable channels like MTV and the Paramount Plus streaming service, said the people, who asked not to be identified sharing private details. Paramount Pictures — home to blockbusters like “The Godfather,” “Top Gun” and the “Mission: Impossible” franchise — would be combined with Sony’s business.

Sony and Apollo, which made a nonbinding expression of interest in acquiring Paramount for $26 billion last week, are also likely to keep Paramount’s library of films and TV shows and the rights to well-known characters, including the Teenage Mutant Ninja Turtles and SpongeBob SquarePants. They have not yet outlined this plan to Paramount or its advisers. A breakup of Paramount would represent a major changing of the guard in the entertainment industry. CBS and Paramount have been controlled by the Redstone family for decades, since the media mogul Sumner Redstone assembled the conglomerate in a series of audacious deals. His daughter, Ms.

Redstone, championed a 2019 deal to reunite it, and she remains Paramount’s controlling shareholder.