Grammy winning pop star Mariah Carey will join Fox television s American Idol singing contest as a judge next season as the highly rated show fights to regain its slumping audiences. Kevin Reilly, president of entertainment for Fox Broadcasting, told television critics on Monday in Los Angeles that popular singer Carey will be one of the re-placements for de-parting judges Steven Tyler and Jennifer Lopez. Tyler, the front-man for rock band Aerosmith, announced his exit earlier this month to focus on his revived music career. Lopez, too, has hinted at her departure in recent weeks and, on Monday, Reilly confirmed she will not return for the upcoming season. Reilly said the deal with Carey was finalized early on Monday and, in a dramatic move for TV critics at the conference, he called the singer on his cell phone to announce the deal. “Hi Mariah. How are you? I have just uttered your name for the first time. We do have a deal, don’t we?” Reilly said.