One of the most successful artists in any musical genre, Underwood has sold more than 65 million records worldwide. Recognized by Billboard as country music's reigning queen and by Rolling Stone as "the female vocalist of her generation of any genre", she was listed by Time as one of the 100 most influential people in the world in 2014. Underwood is the top country artist of all-time on the RIAA's Digital Singles ranking and the highest certified country album artist to debut in the 21st century. She is the only solo country artist in the 2000s to have a number-one hit on the Billboard Hot 100, the only country artist to debut at number one on the Hot 100, and the woman with most number-one hits in the history of the Billboard Country Airplay chart, with fifteen. Forbes has declared her the most successful American Idol winner. Billboard named Some Hearts the number-one country album of the 2000s, and her as the top female artist on their 'Best Country Artists of the 2000s' list. She has been inducted into the Hollywood Walk of Fame, Grand Ole Opry, Oklahoma Hall of Fame, and Oklahoma Music Hall of Fame. She has received numerous awards and accolades, including seven Grammy Awards, 11 Billboard Music Awards, 14 ACM Awards, 13 American Music Awards, nine CMA Awards, and a Guinness World Record.