Keiser, the steps that you might expect for a full detail are the following:
Exterior: Wash, remove bonded contaminants with clay, then polishing, which depending on the color of the car and the condition, may be one or two steps (coarse and fine polish, basically). IF the paint is really in excellent shape, a cleaner might only need to be applied rather than polishing, possibly by hand. Expect the polishing to be done by machine (rotary buffer or dual action orbital polisher, as has been alluded to, if you allow someone to use a rotary on your car make sure they know what they are doing). This would be followed by either a synthetic sealant or a wax (or both). Alloy wheels would be treated in the same manner, while tires and exterior rubber trim would be cleaned and have a dressing applied.
Interior: Vinyl & leather surfaces cleaned and dressed. Carpeting and upholstery vacuumed, spot treated for stains, shampooed, and extracted (an extractor or wet vac should be used to make sure things are sufficiently dry to prevent any mold or mildew in your car). Clear plastic dusted. Glass surfaces cleaned.
If you can tell us where in the Northeast you live you will likely get some recommendations on who can do an "Autopian" job on your car, and they will likely explain to you before/during all their steps and why/how they are done.