AT&T, in Abrupt Turn, Will Shed Media Business in Deal With Discovery

The telecommunications giant will spin off WarnerMedia in a transaction that will combine HBO and CNN with Oprah Winfrey’s OWN and HGTV.

AT&T, the wireless carrier that thundered its way into the media business three years ago with grand visions of streaming video on millions of its customers’ cellphones, has agreed to spin off its WarnerMedia group and merge it with its rival programmer Discovery Inc., the companies announced Monday. The transaction will combine HBO, Warner Bros. studios, CNN and several other cable networks with a host of reality-based cable channels from Discovery, including Oprah Winfrey’s OWN, HGTV, The Food Network and Animal Planet. The company will join together two of the largest media businesses in the country. AT&T’s WarnerMedia group includes the sports-heavy cable networks TNT and TBS. In addition to Discovery’s strong lineup of reality-based cable channels, the company has a large international sports business.