Semantic XBRL is a dataset that contains semantic data generated from the data submitted by participants in the XBRL Voluntary Program EDGAR promoted by the U.S Securities and Exchange Commission (SEC).
Semantic data is generated by translating XBRL XML to RDF following the XML Semantics Reuse Methodology, which is implemented by the ReDeFer tools. First, there is the XSD2OWL mapping, which generates XBRL OWL ontologies from the XBRL XML Schemas. This mapping is complemented with the XML2RDF one. This one maps XML to RDF step, based on previous mappings from the XML Schemas the XML is based on to OWL ontologies.