Mariah Carey, Nicki Minaj, Keith talk ‘American Idol’

Mariah Carey, Nicki Minaj, Keith talk 'American Idol'“American Idol” begins its 12th season Wednesday facing questions once again about its ability to endure as a top-rated show. This time, Nicki Minaj, Mariah Carey and Keith Urban join veteran Randy Jackson at the judges’ table.