The requirements describe a syntax-independent model for XBRL taxonomies, alongside a standard syntax for publishing them. Unlike the earlier OIM Report Model, which provided a simplified view onto existing XBRL reporting functionality, this initiative has a broader scope and is expected to introduce more substantive changes to taxonomy modelling. The focus is on making taxonomies easier to consume, more performant, more consistent, and better suited to modern use cases such as AI-enabled data analysis and AI-assisted report production.
At its core, the work is a recognition of the need to update and simplify the taxonomy functionality currently provided by the XBRL Standard, which is defined by a complex set of modules built on top of the XBRL 2.1 specification and closely tied to XML syntax. By defining clearer modelling approaches, stronger declarative constraints, and improved support for regulatory, tabular and record-based reporting, the OIM taxonomy model aims to reduce ambiguity and reliance on external filing manuals.
This requirements document lays essential groundwork to the OIM taxonomy development process. The OIM is a cornerstone of XBRL modernisation, ensuring taxonomies remain fit for regulators, preparers and data users in an increasingly digital and data-driven reporting environment.
