The SEC adopted amendments on June 28, 2018 that required filers to use Inline XBRL (iXBRL) for both operating company financial statement information and fund risk/return summary information. Filers using iXBRL are able to prepare a single document that embeds machine-readable data directly into a human-readable document. This gives data users a simpler means to view, access, and explore the contextual information of the underlying data.
As of June 15, 2021, all operating companies submitting structured financial statement information for fiscal periods concluding on or after that date are required to submit that information in addition to cover page information that must be tagged in iXBRL. Large accelerated filers and accelerated filers who prepare financial statements pursuant to US GAAP are already subject to this requirement. For domestic form filers that are not large accelerated filers or accelerated filers, this requirement will go into effect with their first Form 10-Q for a fiscal period concluding on or after that date.
For questions about data structuring associated with the iXBRL requirements, contact the Office of Structured Disclosure via email at structureddata@sec.gov. For queries pertaining to legal compliance with the iXBRL requirements, contact the Office of Chief Counsel via its Division of Corporation Finance request form for Interpretive Advice and Other Assistance webpage.
Sources:
Reminder of Upcoming Final Phase-In Date for Inline XBRL for Operating Companies (sec.gov)
Inline XBRL Filing of Tagged Data (sec.gov)
