Please find the worksheet below.It has a totals column to it.The below link has more details
Hope that helps.
Thanks for the response John, but unfortunately that's not what I'm trying to do. For some things, the dual axis works fine, but it doesn't work with bar graphs and it also doesn't allow for the "total" to show in the legend. That's why I'm trying to add new value to the Segment dimension. I have no idea if what I'm trying to do is even possible in Tableau or not.