Mariah Carey Officially Exits 'American Idol'

Singer also confirms that she will be embarking on a world tour.

Mariah Carey is leaving "American Idol" after a one-season stint on the show.

The singer made it official on Thursday afternoon (May 30) with a tweet by her longtime PR firm, PMK-BNC, that read, "W/ global success of "#Beautiful" (#1 in 30+ countries so far) @MariahCarey confirms world tour & says goodbye 2 Idol." The message was promptly retweeted by Carey.

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Asked for further comment, a representative for the singer points to a "jam-packed" scheduled that includes "putting the finishing touches on her much anticipated forthcoming album, headlining the Macy's 4th of July Fireworks Spectacular and appearing in Lee Daniel's The Butler, opening in August." The film's cast also includes Oprah Winfrey, Forest Whitaker, Vanessa Redgrave, Jane Fonda, Cuba Gooding Jr. and Lenny Kravitz.

Carey will also embark on a world tour that kicks off this October in Asia.

The singer's exit from the Fox show had been much speculated. No further announcements have been made regarding "Idol's" future judging panel, although alum Jennifer Hudson is said to be negotiating for a seat at the season 13 table.

A statement released by "Idol" production partners Fox, FremantleMedia and 19 Entertainment reads, "Mariah Carey is a true global icon -- one of the most accomplished artists on the planet -- and we feel extremely fortunate that she was able to bring her wisdom and experience to the 'American Idol' contestants this season. We know she will remain an inspiration to 'Idol' hopefuls for many seasons to come."