Given the task definition and input, reply with output. In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.

He is well known as a judge on television programmes " Pop Idol " , " The X Factor " , " American Idol " and " Britain 's Got Talent " .

He has judged on the British TV talent competition series " Pop Idol " , " The X Factor " and " Britain 's Got Talent " , and the American TV talent competition shows " American Idol " , " The X Factor " and " America 's Got Talent " .