Katy Perry turned down $20 million payday Tue-28-Aug-12 09:55 Share this By Jay-Jay Feeney"American Idol" offered Katy Perry $20 milliion to be a judge this season but she turned it down. (They are paying Mariah Carey $18 million.)Katy wasn't interested, and "money wasn't the issue." She couldn't fit it into her schedule, and didn't think that it was a good career move right now. You May Also Like Miley Cyrus gets her claws out and slams Katy Perry Katy Perry the Aussie Weather Girl! Katy Perry dishes about that kiss with Miley Become a fan of The Edge on Facebook and on Twitter .