A document called US GAAP Taxonomy - Tips, Tricks, and Traps is available here on this blog. On that page there is an abstract of the document. In summary, the document provides:
The document was created by Christine Tan and myself. Both of us worked on the US GAAP Taxonomy project team. In talking to others who were trying to understand the taxonomy we heard that they really did not know where to start. We believe that is document provides an excellent starting point.
More information is available on the page noted above.