1. International Accounting Standards Committee Foundation XBRL team The views expressed in this presentation are those of the presenter, not necessarily those of the IASC Foundation or the IASB IASC Foundation XBRL Versioning for IFRS Taxonomy 22 June 2009, FINREP Haiko Philipp March 2009 2009 IASC Foundation | 30 Cannon Street | London EC4M 6XH | UK | www.iasb.org

2. 2 Agenda Versioning at the IASCF Versioning specification Versioning report syntax / semantics Versioning approach for the IFRS Implementation aspects Challenges and next steps

3. 2009 IASC Foundation | 30 Cannon Street | London EC4M 6XH | UK | www.iasb.org 3 Versioning at the IASCF Background: annual update of the IFRS Taxonomy resulting from the changes in the written Bound Volume of IFRSs Enhancements to the change management and its standardized communication necessary Discussions about versioning at IASCF since 2004 Resulted in a prototype presented in 2006 Prototype and feedback on it were input for the versioning WG

4. 2009 IASC Foundation | 30 Cannon Street | London EC4M 6XH | UK | www.iasb.org 4 Versioning at the IASCF Project objective: enhance change management IFRS Taxonomy consumers: More transparent development process (easier comparison) Represents taxonomy developer view on the changes (explanation of changes) Enables grouping and filtering of changes Software developers Standardized way of communication of taxonomy changes (former proprietary software) Possibility of automated consumption of versioning report Enables statistics XBRL tools: Better workload estimation while migrating between taxonomy releases Semi-automated integration of new taxonomy release

5. 2009 IASC Foundation | 30 Cannon Street | London EC4M 6XH | UK | www.iasb.org 5 Versioning specification XBRL Versioning Specification is an extension of the base specification for XBRL 2.1 Versioning specification currently a Public working draft – syntax may change On the way towards candidate recommendation (last call for comments from XSB) Versioning report published for IFRS Taxonomy 2008 –> 2009 on 28 April 2009 Based on the Public Working Draft from 04 February 2009

6. 2009 IASC Foundation | 30 Cannon Street | London EC4M 6XH | UK | www.iasb.org 6 Purpose of the versioning report is to document differences between two taxonomies Interest in semantic changes rather than syntactical changes Benefits / advantages Users should better understand changes made Tracking / documenting changes by taxonomy developer Enable automated processing - XBRL is used in production today Taxonomy extensions development Tools using taxonomy or its extensions Versioning specification

7. 2009 IASC Foundation | 30 Cannon Street | London EC4M 6XH | UK | www.iasb.org 7 Versioning report syntax / semantics Versioning report is divided into three major building blocks Categories: classification of an assignment Default categories: Errata, business, technical Assignments: represent a versioning task Enable documentation through labels and references Enable classification through links to categories Enable breakdown into individual actions Actions: represent one or more changes using single or combined events

8. 2009 IASC Foundation | 30 Cannon Street | London EC4M 6XH | UK | www.iasb.org 8 Versioning report syntax / semantics Events on concepts Concept add Concept delete Concept name Concept type Concept substitution group Concept period type Concept add-attribute … Events on relationships Relationship add Relationship delete Relationship next Relationship previous Relationship add- attribute Relationship delete- attribute Relationship change- attribute Events on resources Resource add Resource delete Resource value Resource role Resource add-attribute Resource delete-attribute Resource change- attribute Resource add-child …

9. 2009 IASC Foundation | 30 Cannon Street | London EC4M 6XH | UK | www.iasb.org 9 Versioning report syntax / semantics Action: myAction Generic label linkbase (documentation) Versioning report link:locator label:label gen:arc … Category:errata Assignment: myTask Event: Concept Add Event: concept delete Event: resource value …

10. 2009 IASC Foundation | 30 Cannon Street | London EC4M 6XH | UK | www.iasb.org 10 Where are IFRS Taxonomy changes coming from? Physical / structural changes Changed file and folder names, updated namespaces, role URIs New technologies: XBRL dimension (new schema definitions) Semantic changes Updated, deleted and new IFRSs Taxonomy improvements (typos, reference updates,...) Versioning approach for the IFRS

11. 2009 IASC Foundation | 30 Cannon Street | London EC4M 6XH | UK | www.iasb.org 11 Versioning approach for IFRS Versioning report for IFRS –Categories: use default categories only –Default categories: errata, business, technical –Assignments: objective is keep assignments stable over a period of time –Definition of major tasks like OutOfDateIFRSs, WordingImprovements, … –Actions: focus on concepts (one Action per one concept) –Concepts are currently crucial for stakeholders

12. 2009 IASC Foundation | 30 Cannon Street | London EC4M 6XH | UK | www.iasb.org 12 Versioning approach for IFRS Action: del_BusinessSegments Linkbase (documentation)Versioning report Link:locator label:label Gen:arc Category:businessCategory Assignment: OutOfDateIFRSs Event: concept delete Action: del_DisclosureOf SegmentReportingExplanatory Event: concept delete Out of date IFRSs

13. 2009 IASC Foundation | 30 Cannon Street | London EC4M 6XH | UK | www.iasb.org 13 Versioning report approach used for IFRS: Light versioning report Comprehensive versioning report Reasons for providing two versioning reports Identification of two major groups of stakeholders Requesting an overview of major changes in the taxonomy Implement the IFRS Taxonomy into their software and requiring detailed list of changes Human readable visualization of light report Versioning approach for IFRS

14. 2009 IASC Foundation | 30 Cannon Street | London EC4M 6XH | UK | www.iasb.org 14 Versioning approach for IFRS Light version report (basic changes for concepts) –Concepts added: 201 [concept add event] –Concepts deleted: 152 [concept delete event] –Concepts renamed: 194 [concept name event] Comprehensive version report (basic changes for concepts + detailed changes for concept attributes and resources) –Basic changes (all basic changes for concepts) –Changed attributes –Added, deleted, corrected labels –Added, deleted references –Current approach does not document changes in presentation-, calculation- and definition linkbases

15. 2009 IASC Foundation | 30 Cannon Street | London EC4M 6XH | UK | www.iasb.org 15 Implementation aspects XBRL Processor Versioning stylesheet Raw versioning report Create raw versioning report Configure versioning stylesheet XBRL versioning report -Set documentation path -Definition categories -Definition assignments -Create namespace mapping -Create role mapping -Set path from/to DTS -Define mapping rules (actions-assignments) - Run XBRL processor

16. 2009 IASC Foundation | 30 Cannon Street | London EC4M 6XH | UK | www.iasb.org 16 Based on XSL stylesheets & XBRL processor Semi-automatic process –Manual –Namespace mapping –Definition of assignments + corresponding documentation –Definition of the rules (assignment – action mapping) –Automatic –Recognition of actual change –Grouping of actions by concepts –Applying defined rules Implementation aspects

17. 2009 IASC Foundation | 30 Cannon Street | London EC4M 6XH | UK | www.iasb.org 17 Current mechanism is able to version any taxonomy (not IFRS specific) with minor adjustments to the stylesheet Current IFRS concept naming convention does not allow recognition of renamed concept on pure basis of XBRL attributes (this applies only to taxonomies introducing renaming of concepts) –Introduction of a non XBRL attribute @info:creationID for IFRS Taxonomy concepts which is stable over releases –Enables identification of added, removed and renamed concepts even if @name and @id are changed –Detailed comparison on concept attributes, relationships and resources is done on the basis of @info:creationID attribute Implementation aspects

18. 2009 IASC Foundation | 30 Cannon Street | London EC4M 6XH | UK | www.iasb.org 18 Versioning of presentation, calculation and definition linkbases Dimensional versioning - improve current versioning specification through documenting dimensional changes (not supported by current spec) Ex-ante vs. ex-post explanation of changes Syntax changes in the specification Lack of clear understanding of versioning usage in the market (documentation vs. automated change log vs. migration tool) Lack of software that support versioning Physical/structural aspects of migration (changes to file and folder names, namespaces, URIs, web locations, etc.) Challenges and next steps

19. 2009 IASC Foundation | 30 Cannon Street | London EC4M 6XH | UK | www.iasb.org 19 Improve current versioning mechanism implementing documentation for relationship changes (presentation-, calculation-, definition linkbase) Constantly feedback to versioning WG Consider requirements for dimensional versioning if IFRS Taxonomy architecture changes Expand versioning discussion with ITA and TAWG to agree on best practices Improve market understanding of versioning Challenges and next steps

20. International Accounting Standards Committee Foundation XBRL team The views expressed in this presentation are those of the presenter, not necessarily those of the IASC Foundation or the IASB IASC Foundation Questions? March 2009 2009 IASC Foundation | 30 Cannon Street | London EC4M 6XH | UK | www.iasb.org

21. 21 Versioning report syntax / semantics Events on concepts Concept add Concept delete Concept no-change Concept namespace Concept name Concept type Concept substitution group Concept period type Concept nillable Concept abstract Concept block Concept balance Concept default Concept fixed Concept final Concept add-attribute Concept delete- attribute Concept change- attribute Concept add-child Concept delete-child Concept change-child

22. 2009 IASC Foundation | 30 Cannon Street | London EC4M 6XH | UK | www.iasb.org 22 Versioning report syntax / semantics Events on resources Resource add Resource delete Resource no-change Resource value Resource role Resource add-attribute Resource delete- attribute Resource change attribute Resource add-child Resource delete-child Resource change-child