Currenlty this is a document under development by the XBRL Versioning Working Group. The Versioning Specification would allow documenting the changes between two taxonomy versions and communicate the changes in a standardized way. The benefits of preparing standardized versioning reports are that the software can automatically use the versioning reports in order to update the mapping between the internal systems and the XBRL Taxonomy or help migrating an XBRL taxonomy form a version to the next taxonomy version.