The XBRL US Center for Data Quality has launched a public review for five new proposed validation rules. Additionally, the Data Quality Committee (DQC) has released proposed additions to the previous rule regarding inappropriate negative values.
Friday, July 15. 2016
These rules are available for comment by public companies, data providers, analysts and XBRL providers for sixty days and pertain to providing validation tests for XBRL errors. The comment period for these rules will end August 31, 2016.
The five proposed rules address common XBRL errors as follows:
This rule would test whether certain axis elements are being used with appropriate members. In the US GAAP taxonomy, there are a number of axis elements that should only use particular member elements. This rule would also test whether custom member elements are being used with axis elements that allow custom members.
This rule would test whether certain elements have a negative value depending if another value in the report meets a specified criteria. The list of elements that should not be negative if a precondition is met for another element is available in the DQC_0013 List Of Elements file. The member exclusions previously defined in Rule DQC_0015 apply to this rule as well. For the list of those elements, see the DCQ_0015 Member Exclusions file.
This rule would test the values for a certain list of elements to verify that the values are negative. If the value for the element has a dimension, it would not be tested. This rule applies only when the values for the listed elements do not have a dimension.
For a list of the elements with no dimensions that cannot have negative values and that would be tested by this rule, see the DCQ_0014 List of Elements file.
This rule would test whether any deprecated elements are being used in a report. Deprecated elements are determined by taking all children of the “DeprecatedItems” element defined in the presentation tree of the US GAAP taxonomy.
This rule evaluates whether the dimension default (commonly known as Domain element) is associated with a given axis in the company’s extension taxonomy. Companies should not change the default member defined in the US GAAP Taxonomy for a given axis in their extension taxonomy.
The following rule is proposed as an addition to final Rule DQC_0015:
This rule would test certain elements to determine if they have any negative values within the report. This rule expands the list of elements that will be tested for negative values.
For a list of the additional elements that would be tested by this rule, see the DCQ_0015 List of Elements V2 file. The member exclusions for the DQC_0015 rule are not being adjusted.
Additionally, the DQC has proposed Guidance on Tagging Axis and Members Using the US GAAP Taxonomy.
Each of these proposed rules and the proposed guidance are open to public comment until Wednesday, August 31, 2016. All of the rules and the comments that have been received by the Center for Data Quality can be viewed at: http://xbrl.us/home/data-quality/public-review/.
Comments received during the 60-day public review period will be evaluated for incorporation into the final rules determined by the Center for Data Quality. Final rules will be contributed to the open source Arelle XBRL platform.
Software within the GoFiler family has the ability to connect to the Arelle XBRL platform. Many of these rules are already implemented within GoFiler’s XBRL validation tools, and others will be implemented as soon as the final rules are published by the Center for Data Quality.
Novaworks has been a member of XBRL US since 2011.