http://www.animenewsnetwork.com/article.php?id=5025
In 2003 Cartoon Network turned $650 million in revenue, 17% of the the entire Turner Broadcasting revenue, compared to $535 million (14%) in revenue for CNN and the rest of Turner Broadcastings news operations.
Adult Swim has consistently ranked #1 in its time period (11 pm - 2 am) on basic cable with adults 18-34, against competition from late night talk shows like NBC's Tonight Show with Jay Leno and the CBS Late Show with David Letterman.