Hi Juan, within the SEC Financial Statement Data Sets quarterly releases ( https://www.sec.gov/dera/data/financial-statement-data-sets.html), there is a text file named “sub”. Within it, each entity is given an sic code. You can use that sic code to match with the SEC provided sic list (https://www.sec.gov/info/edgar/siccodes.htm). Since the sic codes have 4 digits, you can further classify them by Division, Major Group, Industry Group and Industry by using the structure at this website https://siccode.com/
Tim
Hi Juan – in addition to the resources Tim provided, you can get the SIC code when you include report.sic-code in the fields you return for /fact and /report queries using the XBRL API. The attribute is searchable on the these endpoints.
Using the XBRL API with the Public Filings Database
Unless otherwise agreed to in writing, any and all use of the XBRL API to authenticate and retrieve data from the XBRL US Database of Public Filings implies user consent and agreement with the XBRL US API Agreement. If you are unable to agree to these terms, do not use the XBRL API.
To use the XBRL API outside of Google Sheets, your account needs to be provisioned for OAuth2 access.
The national consortium for 
