XBRL eXtensible Business Reporting Language, and the related, required encoding (or "tagging") of public company financial statement data in the U.S. by the Securities and Exchange Commission. In those instances The Chart of accounts must support the required encodings. Regulation S-X, Regulation S-K and Proxy statement In the U.S. the Securities and Exchange Commission prescribes and requires numerous quarterly and annual financial statement disclosures. A large portion of the required disclosures are numeric and must be supported by the Chart of accounts. Notes and references Accounting journals and ledgers Accounting terminology