XBRL US has made the US GAAP Taxonomies 1.0 has been delivered to the SEC by XBRL US and has been made publicly available here. There is more information available about the taxonomies in a press release by XBRL US.
In addition to the taxonomies themselves also available are a downloadable ZIP archive of all the taxonomies, a preparer's guide, case studies, technical user guide, and an architecture document explaining the taxonomies.
Check this site for additional information relating to this taxonomy.