The Irish rock group won 'Best Touring Band' at last night's 2011 Billboard Music Awards, following which manager Paul McGuinness revealed that the band are due to appear on the popular Fox show.
"We've got Idol rehearsal tomorrow, maybe that's supposed to be a secret," McGuiness told Billboard yesterday. "Then, yes, the Idol finale is Wednesday."
McGuinness also commented on the group's win last night for their record-breaking '360° Tour', which has seen the band play to around 7 million people so far.
"It's more important to be the best rather than the biggest," he said of the win. "But I think they've managed to be both."
The band will perform on Wednesday night's American Idol, in which Scotty McCreery and Lauren Alaina will compete to be crowned winner of the show's tenth season.
The American Idol finale will air on Fox on May 23 and May 24 from 8/7c.
> Read our full American Idol coverage here
Watch Paul McGuinness discussing U2's victory below: