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CEN Workshop Agreement

Status: Working Group Working Draft

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Contents 1 Scope 2 Normative references 3 Terms and definitions 4 XBRL Introduction 4.1 Introduction: from unstructured to structured information 4.2 General Definition of XBRL 5 XBRL Components 5.1 XML 5.2 XBRL Taxonomy 5.3 XBRL Instance Document 6 Practical example: from financial report to XBRL instance 7 Bibliography

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Foreword

This document is a working document. This document has been prepared by CEN/WS XBRL, the secretariat of which is held by NEN. This document is a working document.

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Introduction

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Scope

The objective of this CWA is to provide a roll-out package for regulators who wish to use XBRL. More precisely, this CWA consists of two parts:

i) An XBRL supervisory roll-out guide: this is oriented towards national regulators on how to implement, extend and manage XBRL taxonomies

ii) An XBRL handbook for declarers: this is a roll-out guide or reference handbook would give a general introduction to XBRL and serve as a help to preparers of XBRL (reporting entities)

The scope of the current document is on the second part of the CWA; the XBRL handbook for declarers. In this general guide to XBRL, the following subjects will be addressed: [DRAFT]

Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN xyz:199x, Title of the european standard.
EN ab c:199x, General title of series of parts — Part c: Title of part.

Terms and definitions

For the purposes of this document, the following terms and definitions apply / the terms and definitions given in … and the following apply.

Term1 

description on text for term1

Term2 

description on text for term2

XBRL Introduction

Introduction: from unstructured to structured information

Before starting to explain XBRL, we would like to show via an example why the structuring of reported data can be useful. Reported financial data tend to be represented a table format. For example, the COREP Capital Adequacy table looks this:

[Image: Example COREP Reporting table]
Such a representation of information is very human-readable. However, it is not ideal for machine interpretation, as it is not very structured. As a result, the following question comes to mind: How can we structure this information, so that it can be transmitted and interpreted in a consistent way? For the purpose of this example, we’ll focus on the “Eligible Capital” line, which is highlighted in yellow in the above example.

A first step would be to tag the amount of Eligible Capital in a way that it is directly linked to the concept of Eligible Capital:
[Image: Code tag Sample1]
Although this information is already quite structured, some contextual information is missing. Information like the currency of the amount:
[Image: Code tag Sample2]

General Definition of XBRL

This chapter gives a general definition of XBRL

XBRL Components

XML

Chapter explaining XML and components like: XML namespaces, XML schema, XLink, XPointer

XBRL Taxonomy

Chapter explains the main purpose of XBRL taxonomy (definition of reporting concepts)
Among others, explanation of the following: primary concepts, dimensions, different types of linkbases (presentation, label, definition, …)

XBRL Instance Document

Explain (via a practical example) how an instance document is constructed: namespaces, contexts & units, facts, …

Practical example: from financial report to XBRL instance

Show a (real?) use case which is relevant for the declarer of XBRL: how to go from report & taxonomy to XBRL instance

Bibliography

[1] :xxx

[2] :xxx