The Public Review Period for this concluded on February 1, 2010.

Since December 31, 2008, the Financial Accounting Standards Board (FASB) has issued multiple US GAAP standards as codified. A number of these new standards are eligible for early adoption or effective for financial statements issued as of and for annual and interim periods ending on or prior to December 31, 2009.

To accommodate those public companies that need to use these new accounting standards, XBRL US has developed over 200 new elements that are now available in the US GAAP Taxonomy 2009 Addendum-1 posted here. The new elements are also available for comment during a public review period that will end on release of the US GAAP Taxonomy 2010. The XBRL US GAAP Taxonomy 2009 Addendum-1 posted here includes all the new elements related to the newly issued FASB standards and imports the entire US GAAP Taxonomy 2009. These elements will be incorporated into the XBRL US GAAP Taxonomy 2010.

• When should I use the new FASB elements?
• What FASB Standards are included in the XBRL US GAAP Taxonomy 2009 Addendum-1?
• Why are all new FASB Standards not included in the XBRL US GAAP Taxonomy 2009 Addendum-1 Taxonomy?
• Why not permanently incorporate the new elements into the 2009 Release?
• What is contained in the XBRL US GAAP Taxonomy 2009 Addendum-1 files?
• What will I see when I open the XBRL US GAAP Taxonomy 2009 Addendum-1 Taxonomy?
• Since the new elements are combined with the 2009 US GAAP Taxonomy, how do I know which are the new elements?
• How should I access the new FASB elements?
• When I submit my XBRL-formatted financials to the SEC, which files do I need to submit with it if I have used XBRL US GAAP Taxonomy 2009 Addendum-1 elements?
• If the SEC does not recognize the XBRL US GAAP Taxonomy 2009 Addendum-1, why should I use it?
• How and why should I provide comment?