March 2009 International Accounting Standards Committee Foundation XBRL

March 2009 International Accounting Standards Committee Foundation XBRL team XBRL Versioning for IFRS Taxonomy 22 June 2009, FINREP Haiko Philipp IASC Foundation The views expressed in this presentation are those of the presenter, not necessarily those of the IASC Foundation or the IASB 2009 IASC Foundation | 30 Cannon Street | London EC 4 M 6 XH | UK | www. iasb. org

Agenda • Versioning at the IASCF • Versioning specification • Versioning report syntax / semantics • Versioning approach for the IFRS • Implementation aspects • Challenges and next steps 2009 IASC Foundation | 30 Cannon Street | London EC 4 M 6 XH | UK | www. iasb. org 2

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 2009 IASC Foundation | 30 Cannon Street | London EC 4 M 6 XH | UK | www. iasb. org 3

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 2009 IASC Foundation | 30 Cannon Street | London EC 4 M 6 XH | UK | www. iasb. org 4

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 IASC Foundation | 30 Cannon Street | London EC 4 M 6 XH | UK | www. iasb. org 5

Versioning specification • 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 2009 IASC Foundation | 30 Cannon Street | London EC 4 M 6 XH | UK | www. iasb. org 6

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 usingle or combined events 2009 IASC Foundation | 30 Cannon Street | London EC 4 M 6 XH | UK | www. iasb. org 7

Versioning report syntax / semantics • Events on concepts 8 • Events on relationships • Events on resources • Concept add • Relationship add • Resource add • Concept delete • Relationship delete • Resource delete • Concept name • Relationship next • Resource value • Concept type • Relationship previous • Resource role • Concept substitution group • Relationship addattribute • Resource add-attribute • Concept period type • Relationship deleteattribute • Concept add-attribute • … • Relationship changeattribute 2009 IASC Foundation | 30 Cannon Street | London EC 4 M 6 XH | UK | www. iasb. org • Resource delete-attribute • Resource change-attribute • Resource add-child • …

Versioning report syntax / semantics Versioning report Generic label linkbase (documentation) Category: errata Assignment: my. Task link: locator gen: arc Action: my. Action Event: Concept Add Event: concept delete Event: resource value … 2009 IASC Foundation | 30 Cannon Street | London EC 4 M 6 XH | UK | www. iasb. org label: label … 9

Versioning approach for the IFRS • 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, . . . ) 2009 IASC Foundation | 30 Cannon Street | London EC 4 M 6 XH | UK | www. iasb. org 10

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 “Out. Of. Date. IFRSs”, “Wording. Improvements”, … – Actions: focus on concepts (one Action per one concept) – Concepts are currently crucial for stakeholders 2009 IASC Foundation | 30 Cannon Street | London EC 4 M 6 XH | UK | www. iasb. org 11

Versioning approach for IFRS Versioning report Linkbase (documentation) Category: business. Category Assignment: Out. Of. Date. IFRSs Link: locator Gen: arc Action: del_Business. Segments Event: concept delete Action: del_Disclosure. Of Segment. Reporting. Explanatory Event: concept delete 2009 IASC Foundation | 30 Cannon Street | London EC 4 M 6 XH | UK | www. iasb. org label: label Out of date IFRSs 12

Versioning approach for IFRS • 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 2009 IASC Foundation | 30 Cannon Street | London EC 4 M 6 XH | UK | www. iasb. org 13

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 2009 IASC Foundation | 30 Cannon Street | London EC 4 M 6 XH | UK | www. iasb. org 14

Implementation aspects Create raw versioning report -Set documentation path -Definition categories -Definition assignments -Create namespace mapping -Create role mapping Raw versioning report 15 XBRL Processor Versioning stylesheet Configure versioning stylesheet -Set path from/to DTS -Define mapping rules (actions-assignments) 2009 IASC Foundation | 30 Cannon Street | London EC 4 M 6 XH | UK | www. iasb. org - Run XBRL processor XBRL versioning report

Implementation aspects • 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 2009 IASC Foundation | 30 Cannon Street | London EC 4 M 6 XH | UK | www. iasb. org 16

Implementation aspects • 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: creation. ID 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: creation. ID attribute 2009 IASC Foundation | 30 Cannon Street | London EC 4 M 6 XH | UK | www. iasb. org 17

Challenges and next steps • 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. ) 2009 IASC Foundation | 30 Cannon Street | London EC 4 M 6 XH | UK | www. iasb. org 18

Challenges and next steps • 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 2009 IASC Foundation | 30 Cannon Street | London EC 4 M 6 XH | UK | www. iasb. org 19

March 2009 International Accounting Standards Committee Foundation XBRL team Questions? IASC Foundation The views expressed in this presentation are those of the presenter, not necessarily those of the IASC Foundation or the IASB 2009 IASC Foundation | 30 Cannon Street | London EC 4 M 6 XH | UK | www. iasb. org

Versioning report syntax / semantics 21 • Events on concepts • Concept add • Concept abstract • Concept add-child • Concept delete • Concept block • Concept delete-child • Concept no-change • Concept balance • Concept change-child • Concept namespace • Concept default • Concept name • Concept fixed • Concept type • Concept final • Concept substitution group • Concept add-attribute • Concept period type • Concept nillable • Concept deleteattribute • Concept changeattribute 2009 IASC Foundation | 30 Cannon Street | London EC 4 M 6 XH | UK | www. iasb. org

Versioning report syntax / semantics • Events on resources • Resource add • Resource delete-child • Resource delete • Resource change-child • Resource no-change • Resource value • Resource role • Resource add-attribute • Resource deleteattribute • Resource change attribute • Resource add-child 2009 IASC Foundation | 30 Cannon Street | London EC 4 M 6 XH | UK | www. iasb. org 22