Apache授权的XBRL platform （实现XBRL2.1 Dimension, Formula等功能）

http://arelle.org/

Arelle is a project to provide an easy to use open source facility for XBRL. The intent is to support XBRL platform requirements including extension modules and test suite facilities, in a compact framework.

Support for XBRL versioning was an initial goal, to provide both a validation tool for versioning reports and a production tool to generate the basics of a versioning report that can be inferred by diffing two DTSes.

Arelle fully integrates test cases with the object models for XBRL instances and DTSes. This allows continual verification of tool performance as it is extended and adapted by its users.

Validation is provided for the Base Specification of XBRL 2.1, Dimensions, Generic Linkbases, Unit Types Registry, U.S. SEC Edgar Filer Manual and the IFRS Global Filing Manual.

Formula validation is complete for formula output instance creation, consistency assertions, existence assertions, value assertions, sequence partitioning and fallback value processing. REC status filters and most common functions (including all used by the formula and assertions test cases) are provided. The extension modules are now available, including validation messages, multi-instance and chaining, custom function implementation, aspect cover and concept-relation filters. Formula processing is not yet optimized for execution performance.

Users can explore the functionality and features from either an interactive GUI or command line interface, and can develop their own controller interfaces as needed.