The XBRL US Data Quality Committee has approved and published validation rules listed below to help public companies detect inconsistencies or errors in their XBRL-formatted financial data. The rules identify potential errors such as incorrect negative values, improper relationships between elements, and incorrect dates associated with certain data. The Committee approved these rules after considering comments received during a public review period.
The rules are freely available and can be accessed through XBRL service providers whose incorporation of the rules in their software tool has been approved by the XBRL US Center for Data Quality. When the rules identify a potential error, they provide detailed information on the potential error with guidance on how to correct it.
Certain axes in the US GAAP taxonomy should only have certain members as shown in the US GAAP taxonomy. This rule tests whether these axes have inappropriate members.
Assets equal liabilities plus shareholders’ equity.
Dates that end after reporting period end dates are limited to subsequent events, forecasts and Entity Common Stock, Shares Outstanding.
Document and entity information, footnotes, tables, and accounting policy concepts must use reporting period dates that are consistent with the fiscal period focus of the filing (e.g. Q1, Q2, Q3 or FY).
This rule evaluates whether a calculation relationship in the company’s extension is a reversal of the calculation defined in the base taxonomy used for the filing.
Value for element A should be less than or equal to the value for element B. Documentation includes a list of elements where this comparison is tested.
This rule evaluates whether a fact expressed with no dimensions is equal to the same fact expressed in a table with dimensions.
The US GAAP Taxonomy is designed so that the majority of elements have a positive value. This rule tests that the values for a given list of elements are negative when a precondition is met for another element.
The US GAAP Taxonomy is designed so that the majority of elements have a positive value. This rule tests that the values for a given list of elements with no dimensions are negative. If the value has a dimension member, then the rule will not fire.
Elements that should not be reported with negative values. Documentation includes a list of elements tested.
This rule evaluates if the company has used a deprecated element in the filing. The rule specifically checks if a deprecated element is included in the presentation relationship defined in the company’s extension taxonomy. Deprecated elements are determined by taking all children of the “DeprecatedItems” element defined in the presentation tree of the US GAAP taxonomy. Errors are reported for each deprecated element, including errors for each line item with an associcated deprecated member or axis.
Document and entity information dates should match the document period end date.
The document period end date should match the date tagged with the document period end date element.
This rule evaluates whether the dimension default is associated with a given axis in the company’s extension taxonomy. Companies should not change the default member defined in the base taxonomy for a given axis in their extension taxonomy.
The rule identifies the balance type of the elements in the calculation linkbase that are children of the operating cash flow elements in the US GAAP taxonomy, specifically the elements NetCashProvidedByUsedInOperatingActivities or NetCashProvidedByUsedInOperatingActivitiesContinuingOperations and determines whether their effective calculation weights are accurate. The effective calculation weight is the calculation weight of the child element relative to operating cash flow element irrespective of the level the child element exists at in the calculation hierarchy.
This rule tests whether a presentation child element of IncomeStatementAbstract and StatementOfStockholdersEquityAbstract from the US-GAAP taxonomy is used as a child of any of the following elements in the company’s calculation linkbase:
This rule identifies the calculation children of an element in the calculation linkbase of the US GAAP taxonomy and compares the set of elements to the calculation children of a second element used in the company’s extension calculation linkbase. The rule creates a set of elements from the US GAAP taxonomy and compares the set to the children of the element in the extension taxonomy and flags an error if the two sets intersect. The rule identifies inappropriate calculation children in the company’s extension filing.
This rule tests whether certain elements in the calculation linkbase are descendants of a parent concept.
This rule tests whether the descendants of both the elements NetCashProvidedByUsedInOperatingActivitiesContinuingOperations and NetCashProvidedByUsedInOperatingActivities in the companies extension taxonomy have no value defined for the balance attribute.
This rule identifies filings where at least one element in a defined list does not appear as a root node in any cash flow calculation trees defined by the filer. The rule identifies a cash flow calculation tree (extended link role) by assuming the same role is used for the presentation tree.
This rule identifies when a single calculation tree has not been used to represent the increase or decrease in cash for the period.
This rule evaluates whether the following elements are not represented as after tax items:
This rule identifies facts with a given axis and member that cannot be tagged with a value irrespective of the line item used.
The FASB has defined certain members that cannot be included on an axis. This rule checks that a defined list of member axis combinations do not appear in the company’s extension taxonomy.
The FASB has defined certain dimensions that cannot be included with a table. This rule checks that a defined list of table axis combinations do not appear in the company’s extension taxonomy.
The FASB has defined certain situations where a member or multiple members must used with an axis. This rule defines the axis and the member or members that must be present.
This rule identifies filings where at least one element in a list defined by the rule does not appear in the cash flow presentation trees defined by the filer for the cash flow statement.
This rule identifies those instances where one element value is reported and no corresponding value is reported in the same period in the default dimension.
This rule is intended to identify cases where a company’s cash flow includes discontinued operations as a summation-child to the periodic change in cash and cash equivalents (summation-parent), but the calculation tree does not include continuing operations as a summation-child.
This rule identifies those cases where the filer has reported a cash flow statement but has not reported a value for the change in cash. This rule detects where an incorrect element, an inappropriate extension, an inappropriate dimension or a missing value has been used to represent the change in cash for the period.
This rule identifies those cases where the filer has included the element InterestPaid as a presentation linkbase descendant of the element SupplementalCashFlowInformationAbstract but has not included the element InterestPaidNet as a presentation linkbase descendant of the element SupplementalCashFlowInformationAbstract.
This rule identifies if elements associated with the new revenue recognition standards are used in conjunction with elements from the previous revenue recognition standard.
This rule identifies those cases where the filer has reported the StatementGeographicalAxis in conjunction with a line item in the Compensation Related Costs and Retirement Benefits section of the taxonomy.
This rule identifies those cases where the following elements have not been tagged with appropriate members and values and checks that they are tagged appropriately based on FASB guidance. These two elements must be used in conjunction with the axis DefinedBenefitPlanByPlanAssetCategoriesAxis.
This rule aggregates the values of the Plan Asset categories on the DefinedBenefitPlanByPlanAssetCategoriesAxis. The rule aggregates the values of the members and compares the total to the reported total for the default value of the axis.
This rule identifies if the revenue/cost elements RevenueFromContractWithCustomerIncludingAssessedTax, RevenueFromContractWithCustomerExcludingAssessedTax and CostOfGoodsAndServicesSold have been used with the ProductOrServiceAxis for only one product or service represented by a single member on the product or service axis.
This rule identifies those cases where the element DefinedBenefitPlanPlanAssetsInvestmentWithinPlanAssetCategoryPercentage has not been tagged with appropriate members based on FASB guidance. This element must be used in conjunction with the axis DefinedBenefitPlanByPlanAssetCategoriesAxis.
This rule identifies when inappropriate line items are used with the Plan Asset Categories Axis.
This rule identifies when a nil value has been used inappropriately on the following typed axis: RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis
This rule is intended to ensure that filers follow the guidance defined in the Revenue recognition implementation guide published by the FASB. The rule identifies those cases where the duration over which the performance obligation will be captured is not reported. If either of the following two elements are reported with a value:
with RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis then the satisfaction period elements must have associated duration values.
This rule checks if the satisfaction period elements have been used with RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis.
This rule identifies those cases where the ownership interest elements are not used with the ownership axis. This rule is intended to ensure that filers follow the implementation guidance defined in the Dimensional Modeling for Disclosures of Consolidated and Nonconsolidated Entities guide published by the FASB.
This document is intended to provide guidance on structuring and tagging the cash flow statement using the US GAAP Financial Reporting Taxonomy. The cash flow statement in the US GAAP taxonomy is structured as a cash T account. All elements that represent cash receipts and cash inflows, are defined as debit items to mirror inflows into a cash T account. All elements that represent cash outflows are represented as credits.
This document is intended to add additional explanation to the FASB implementation guide on Dimensional Modeling for Disclosures of Consolidated and Nonconsolidated Entities. In addition this document identifies DQC rules to ensure that that the practices defined in the FASB implementation guide are implemented.
Certain axes in the US GAAP taxonomy should only have certain members, otherwise consumption of the data is adversely impacted because the resulting axis and member combinations are nonsensical, e.g., reporting a type of currency as a member on a debt instrument axis. The following guidance provides limitations on the use of certain axis and member combinations that should be adhered to when tagging financial information using the US GAAP Taxonomy.
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