XBRL Terminology
| XBRL Term | Business Term | Description |
|---|---|---|
| Taxonomy | Rule Book and Specifications | Collection of definitions of reporting concepts, relationships between them and various resources |
| Instance Document | Submission Document (Filing / XBRL Report) | Container of the reporting facts. Its content is based on metadata defined in the taxonomy |
| Reporting Fact / Fact | Data Point (A Cell in a QRT) | A fact holds the value for a cell but also includes all information to describe the cell - concepts (eg GWP), data type (eg monetary), descriptive dimensions (eg Motor business), entity (eg Insurance Company A), period (eg 31st December 2021), unit (eg USD), rounding information (eg 2 decimal places) |
| Reporting Concept | Current Assets Goodwill Cashflow etc. |
Each reporting fact must have one and only one concept. Concept is the highest-level business descriptive part of a fact eg Best estimate. A concept is usually not enough to completely describe the business terms eg additional dimensions are needed to specify that the fact relates to: Claims provision (or premium provision) of Best estimate and health line of business etc. Technical note: A concept is a template for a fact. Concepts can be organised into hierarchies. |
| Context | Grouped information that supports similar data points | Container of dimensional information related to a fact. Contexts can be shared between facts eg instead of repeating all datapoints relating to Motor business will refer to a context which specifies the line of business |
| Unit | Unit of a data point | Describes how the fact is measured. For example: monetary value in GBP, monetary value in USD, non-monetary value (must be used in combination with Data type and Decimals attribute to ascertain the specific unit eg 2 d.p., 4 d.p. etc.) |
| Reporting Entity / Entity | Company ID (LEI / Local Registration Number) | Provides identification of the reporting entity in the classification of a specific regulator eg can be LEI or in some cases the regulator requires a local registration number to be used to identify the insurer in the XBRL eg CBI in Ireland |
| Period | Reporting Period | Either instant (year end date or quarter end date), or duration - start/end date. |
| Dimension | Line of business, Valuation method etc. | Dimension is a property of a reporting fact eg line of business dimension or valuation method dimension. |
| Dimensional analysis | Dimensional analysis | The set of reporting facts can break down based on values of a specific dimension: Primary dimensions - entity, period, unit, Custom dimensions - specific concepts (typed and explicit) |
| Dimension Member | Motor business IFRS</br> ISIN/US54374324 etc. |
The concrete value provided for a dimension. For example, for the line of business dimension, a dimension member would be “motor business” or “property business”. |
| Explicit dimensions | Line of business, Country etc. | Where there is a closed list of possible values for a dimension, this is known an explicit dimension. For example, Country dimension (eg for country of authorization fact) is an explicit dimension with finite list of all country codes. |
| Typed dimensions | Asset code, Identifier code etc. | Where a dimension can hold any value, this is known as a typed dimension. For example the asset code fact will hold an identifier for the asset which is not from a closed list. |
| Enumerations | Issuer Country, Type of asset code etc. | Where there is a closed list of possible values for a fact value, this is known as an enumeration. For example, Issuer Country fact can only have a value within a finite list of country codes |
| Dimension Domain | e.g. Geographical areas | Set of all members of a domain, grouped by business concept eg geographical areas. The geographical areas domain lists all countries but also regions of countries (eg for reporting natural catastrophe exposures to Western Europe) |