Mariah Carey retweeted a message from her PR representatives, which read, "W/ global success of "#Beautiful" @MariahCarey confirms world tour & says goodbye 2 Idol http://mariahcarey.com."
Nicky Minaj also took to her Twitter account to make the announcement. She tweeted, "Thank you American Idol for a life changing experience! Wouldn't trade it for the world! Time to focus on the Music! Mmmuuuaahhh!"
Along with the tour, Carey has a number of other projects this year. "The rest of this year is jam-packed with Carey putting the finishing touches on her much anticipated forthcoming album, headlining the Macy's 4th of July Fireworks Spectacular and appearing in Lee Daniels's 'The Butler', opening in August," her representative told People magazine.