SEC XBRL Filing Requirements: An Instructional Case on Tagging Financial Statement Disclosures
On January 20, 2009, the U.S. Securities and Exchange Commission SEC) released Rule 33-9002 for the phase-in of interactive data (SEC 2009a). An important component of this rule is the phase-in of detailed tagging of financial statement note disclosures. Tagging is the process of associating a taxonomy element with a financial statement concept for a particular context. While some of the filers have participated in the SEC Voluntary Filing Project and prepared instance documents tagged at the line item level most have not prepared detail-tagged notes to accompany the financial statements (SEC 2005; Choi et al. 2008). This case discusses the structure of disclosures, as they exist in the 2009 U.S. GAAP Taxonomy, followed by a discussion of dimensional extensions and concludes with an example of block and detailed disclosure tagging using Rivet Software's Dragon Tag (Rivet 2009). The example uses the capitalized costs disclosure for Anadarko Petroleum, a publicly traded company. Following the example, the case requires students to block and detail tag the capitalized costs disclosure for Dig Deep, a hypothetical oil and gas company. By completing the case, students develop an understanding of the current U.S. GAAP taxonomy, skills relating to mapping and tagging processes, and make use of a commonly used XBRL taxonomy and instance document creation program.