The record producer has followed in the footsteps of fellow panelists Jennifer Lopez and Steven Tyler and left the show, according to reports.
But he will remain a part of the US telly hit, by becoming a mentor to contestants, TMZ has reported.
Randy, 56, was the only original judge left, after first joining Idol alongside Paula Abdul and Simon Cowell in 2002. The new line-up is yet to be confirmed, but it is said there will be four judges sitting on the panel.
Pop diva Mariah Carey has already signed a megabucks deal to join the show. While hip-hop star Nicki Minaj is also in the running for a spot at the table.
And country stars Brad Paisley and Keith Urban are being considered to ensure the show pleases its core viewers in middle America.
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