Carrie Underwood has been named as American Idol’s top earner by The Hollywood Reporter, which has published a 21-page feature about the series’ 10th anniversary. According to Nielsen SoundScan, she has sold almost 12.3 million albums and 18.5 million digital tracks since winning the competition in 2005. In addition, her tour revenue has exceeded $66.7 million. Kelly Clarkson, who scored a No. 1 country hit with Jason Aldean this year with “Don’t You Wanna Stay,” ranked second on the list. Clarkson has sold nearly 10.7 million albums and nearly 17.3 million digital tracks. Her concert revenue has exceeded $32.6 million. Meanwhile, Chris Daughtry placed third on the list, followed by Clay Aiken, Fantasia, Ruben Studdard, Jordin Sparks, Jennifer Hudson and David Cook and Kellie Pickler.