I have it on ArcGIS 10.2.1 and it is a separate Extension. It doesn't come automatically with an Advanced license.
ArcGIS Help (10.2, 10.2.1, and 10.2.2)
The newer ESRI Help, unfortunately, seems to automatically assume everyone has the latest and greatest in software, so you have to take what you find with a grain of salt.
Chris Donohue, GISP