Using a combination of 2 new tools in Revit 2012, Parts and Assemblies, you can create Details that show the wall types in your projects with the layers of construction pulled back.
First, create a small length of wall that you want to detail, and place it on a Phase that exists after your other project Phases. You may want to name this Phase "Detailing" or some other description that makes sense to you. We place this wall on a later Phase so it wont affect our current project.
Next, select the wall, and turn it into Parts using the Parts tool in the Modify>Create tab.
Then, select each layer of material, and in Properties, turn on Shape Handles. Use the shape handles to pull back the layers of cosntruction to reveal other layers.
Then select all the Parts for the wall, and turn them into an Assembly by using the Modify>Create>Assemblies tool.
Once they are an Assembly, you can right-click on the Assembly in the Project Browser and use the Create Assembly Views option to make plans, sections, 3D views, and even schedules of the Parts.
Use the Annotate tab to add annotations to your views. Text, dimensions, keynotes, etc can all be added to these views, including the 3D Assembly view.
Place the Assembly Views on an Assembly Sheet to create the detail sheet for that specific wall type.