I have been nurturing along what I call my "Proof" representation for a number of years. I have improved the proof representation, see Proof Plus. Of particular note is the Microsoft Access Database Application that you can use to generate the XBRL taxonomy schema, XBRL linkbases, XBRL formula, and XBRL instance.
What is useful about the Proof and Proof Plus representations is that they contain all of the information patterns you will run across in XBRL-based financial reports. Why is that important? Well, it shows you how to represent things like an adjustment, a variance, as well as common information patterns, and make all the report pieces fit together effectively.
Check it out! Want to learn more? Try this blog post.