Sometimes one would want to represent the mating geometry in a drawing view. You have the option of creating the whole assembly and dropping the cut away or section view into the drawing. That can take a long time depending on the complexity of the assembly or mating parts.
To reduce the time or you can think of this as a work around, you can create a sketch in the part file to represent the mating geometry then show the sketch dimensions in the drawing view without creating a feature for it.
Once you create and dimension the sketch in the part, make sure it is shown. Then you should be able to see it in the drawing view. To get the dimension on the drawing view just use "Insert Modeling Items" and make sure you have "Use Dimension Placement in Sketch" checked.