American Idol is one of the most beloved competition shows on TV today.

The singing series, which kicked off as Pop Idol in the U.K. before launching in America in 2012, has successfully sprung up all around the world with a bunch of international versions, boasting major superstars for judges.

After airing on Fox from 2002 to 2016 for 15 seasons, it was on hiatus for two years until 2018, when a revival of the series began on ABC, and it’s aired ever since.

Over the years, plenty of talent has judged and mentored the contestants all the way to the top. And one by one, all of them have eventually left the show to go on and do other things – even the last remaining original judge from the U.S. series.

We’ve rounded up all of the judges who have since departed from American Idol, along with the explanations they’ve given for why they left the show.

Scroll through to see every judge who left American Idol and why…