Approximate Public Exposure Periods for DQC Rules and Guidance
  • August 1- September 15
  • November 15- December 31
  • May 1- June 15

Public review and comment is a critical part of the process of improving the usability of XBRL filed with the SEC.

The Data Quality Committee sought comment on Variable Interest Entities Guidance from March 16 through May 1, 2020.

The Data Quality Committee sought comment on version 12 of the DQC Rules during a public exposure period of rules and guidance from April 15 through June 1, 2020. The latest plugin releases are linked at right. See the schedule at right for approximate public exposure period timing.

Generally, rules are considered for approval within 45 days of Public Exposure, and effective within 90 days of approval.

Rules and Guidance Recently Exposed for Comment


Negative Values

Version 12 includes elements for public comment from the 2020 US GAAP Taxonomy. See DQC_0015_ListOfElements spreadsheet – v12 for details.

Elements that should not be reported with negative values. Documentation includes a list of elements tested.

This rule is for filings using US GAAP Taxonomies, only.
DQC 0080 Negative Values is for filings using IFRS Taxonomies


Invalid Value for Percentage Items

This rule identifies where filers have used a percentage item type (as defined in the US GAAP taxonomy) with a value that is greater than the value of 10.

The rule identifies those elements that have a num:percentItemType data type that are base taxonomy elements. (Not extension elements) It then checks that the values reported are less than or equal to 10. If greater than 10 then an error is reported. The rule does not run on those elements which contain the text string “EffectiveIncomeTaxRate” in the concept name.



IFRS Non Positive Items

This rule identifies where filers have used a positive value for an item that should be negative. The rule consists of two sub components.



Durational Aggregation

This rule identifies where the values of a durational element for a series of periods of time do not aggregate to the value representing the aggregated period in the instance.


US Maturity Schedules

In the 2020 taxonomy, the definition of the maturity schedule elements has changed. The changes in the 2020 taxonomy will require retagging of most subsequent quarterly filings. This rule is intended to check that the changes in the 2020 taxonomy are applied to the instance documents using this taxonomy.


Scale – Common Stock Outstanding

The rule compares the values of the two elements and reports an error if one of the numbers is more than 100 times larger than the other number.

Guidance - Variable Interest Entities

Variable Interest Entities Guidance

This DQC guidance is designed to address the introduction of the ConsolidatedEntitiesAxis in the 2020 US GAAP Taxonomy. US GAAP taxonomies up to 2019 included in the VIE section of the taxonomy a balance sheet location axis to facilitate reporting the balances on the balance sheet of the portion applicable to the VIE. This was originally designed to allow the use of the Consolidated VIE line items in conjunction with the BalanceSheetLocationAxis. Effective with the 2020 US GAAP Taxonomy, the recommended approach is to discontinue use of the BalanceSheetLocationAxis and instead use the balance sheet line items with the ConsolidatedEntitiesAxis and VariableInterestEntityPrimaryBeneficiaryMember.