Yesterday it was confirmed that Fox network's talent show American Idol will end for good after its 15th series in 2016, following a 13-year run.
Music mogul Simon was an original judge on the US show from 2002 alongside Paula Abdul and Randy Jackson before leaving in 2010.
He tweeted: "Looking back at my time on American Idol we had a great time. We found great artists. Had fun. And to America. Thank you. It was a blast."
X Factor judge Simon also mentioned his fellow judges and long-standing host Ryan Seacrest in a statement.
Simon said: "We had a blast! Me, Paula, Randy, Ryan - and not forgetting Brian. Thanks to the fans we were able to make some great shows and found some amazing artists. Fox took a risk on a brand new show and I want to thank them for giving us the opportunity. They really were great times."
American Idol's current judges are Jennifer Lopez, Keith Urban and Harry Connick Jr., who will remain with the show until its end.
At its height, American Idol founded many of today's mainstream breakout stars, drawing in an audience of more than 30 million viewers per episode.
Looking back at my time on American Idol we had a great time. We found great artists. Had fun. And to America. Thank you. It was a blast.— Simon Cowell (@SimonCowell) May 12, 2015
American Idol became a launching pad for the likes of Kelly Clarkson, Carrie Underwood, Jennifer Hudson and Adam Lambert.
Gary Newman, the co-chief executive of the Fox Television Group, said "it was not an easy decision" as the show had been "such a vital part of Fox" for many years.
"It's bittersweet to announce next season will be its last," said Gary. "It's such an extraordinary story for Fox. You could not watch television over the last 14 years without being swept up in the phenomenon."
The final season is expected to be a "true season-long celebration."
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