Skip to main content

Ongoing Changes to the US GAAP Taxonomy


Understanding the game of XBRL business validations
January 4, 2011

The US GAAP Taxonomy is a work in progress. Since the first public release of the taxonomy, over 340 concepts have been deprecated, that is, designated as no longer appropriate for use. Deprecation occurs for several reasons, but ultimately the decision to deprecate is based on a determination by the SEC that a concept in the taxonomy is not consistent with the intent or needs of US GAAP reporting standards and objectives.

When a concept is deprecated, the taxonomy authors add a special deprecation label which is used to describe the reason for the concept being deprecated and, more importantly, to identify, when appropriate, an alternate concept(s) that should be used instead. The crux of the question is if you find yourself having used a now-deprecated concept, how do you balance the desire to provide reporting consistency across subsequent quarterly filings with the goal to use the most current and correct concept for reporting?

In most cases, a deprecated concept and the new alternate concept identified for its replacement will have the same underlying meaning. The new concept is simply a minor correction, clarification or improvement to the original concept. (This improvement will most often be made in terms of the concept’s name, label, documentation or attribute values.) In this circumstance, when there is no question of the correctness of the mapping choice of the original or the replacement concept, then use the new concept immediately.

This maximizes the accuracy of your report and its consistency and comparability with other companies’ filings. In very rare circumstances you might find that the replacement concept now seems to be inconsistent with the accounting meaning that you were trying to report with your previously used, and now deprecated concept. This circumstance would indicate a need to re-evaluate your mapping choice altogether. This might happen in cases where your original choice was partially based on the very deficiencies that the SEC discovered that led them to the conclusion to deprecate the concept you had selected. Obviously, in this case, selecting a more correct concept should happen immediately.

About WebFilings XBRL Services

Wdesk innovative, integrated XBRL solution offers everything our clients need to meet the SEC reporting mandate. In addition, our Professional Services team includes XBRL experts who have been through the tagging and filing process. Our consultants are available for a full range of training and services to assist in-house teams in creating and managing compliant XBRL filings, while also helping you develop internal knowledge and skill sets. And with the Wdesk business platform, the document drafting and XBRL tagging processes can occur in parallel, saving valuable time.

Dean Ritz headshot
Senior Director of Digital Reporting Strategy

About the Author

Dean Ritz is a subject matter expert in information modeling with over three decades of experience in various data-dominated domains, including artificial intelligence, expert systems, object-oriented programming, and most recently the modeling of financial information. As a Senior Director at Workiva, he applies his expertise to product strategy for collaborative work management and the management of the company’s expanding patent portfolio. His interests extend to the topics of rhetoric and ethics, with scholarly work in these areas published by Oxford University Press (2011, 2009, 2007), and Routledge (2017).

Online registration is currently unavailable.

Please email events@workiva to register for this event.

Our forms are currently down.

Please contact us at

Our forms are currently down.

Please contact us at

Thank you

A Workiva team member will follow up with you shortly.

Thank you for registering

You'll receive a confirmation email shortly.

Thank you

You are now subscribed to receive blog updates.

Back to Top