Here is an SEC XBRL filing I created which makes use of the new FASB 2011 US GAAP Taxonomy. I have not been able to run this through EFM validation yet as I don't know anyone who has adjusted their validation to support the new taxonomy yet.
There are one issues I still need to resolve in that prototype. I am using 2008 negated label roles and I know there is a 2009 version. But, I will wait to update that until I see an updated EFM. Also, the US GAAP Taxonomy now provides a Report Date [Axis]. I need to change from using a report date axis which I created in the company extension taxonomy.
This does include XBRL Formulas which use the new taxonomy.