Composition Axis 1.0

Public Working Draft 21 December 2011

This version:: <http://www.xbrl.org/Specification/composition-axis/PWD-2011-12-21/composition-axis-PWD-2011-12-21.html>
Editors:: Herm Fischer, Mark V Systems <fischer@markv.com>; Victor Morilla, Banco de España <victor.morilla@bde.es>
Contributors:: Geoff Shuetrim, Galexy Pty. <geoff@galexy.com>; Masatomo Goto, Fujitsu Ltd. <mg@jp.fujitsu.com>; Roland Hommes, RHOCON <roland@rhocon.nl>; Bartosz Ochocki, BRAG <bartosz.ochocki@br-ag.eu>; Hugh Wallis, Standard Dimensions <hugh@standarddimensions.com>

Status

Circulation of this Public Working Draft is unrestricted. This document is normative. Other documents may supersede this document. Recipients are invited to submit comments to rendering-feedback@xbrl.org, and to submit notification of any relevant patent rights of which they are aware and provide supporting documentation.

Abstract

This document specifies semantics and syntax constraints for composition axes. Composition axes define subtrees of rule and relationship predefined axes.

1 Introduction

This document specifies semantics and syntax constraints for composition axes. Composition axes define subtrees of rule and relationship predefined axes.

2 Namespaces and namespace prefixes

Namespace prefixes [XML NAMES] will be used for elements and attributes in the form ns:name where ns is the namespace prefix and name is the local name. Throughout this specification, the mappings from namespace prefixes to actual namespaces are consistent with Table 1.

The prefix column in Table 1 is non normative. The namespace URI column is normative.

Table 1: Namespaces and namespace prefixes

Prefix	Namespace URI
`table`	`http://xbrl.org/2011/table`
`xbrlte`	`http://xbrl.org/2011/table/error`
`link`	`http://www.xbrl.org/2003/linkbase`
`xbrli`	`http://www.xbrl.org/2003/instance`
`xfi`	`http://www.xbrl.org/2005/function/instance`
`xbrldi`	`http://xbrl.org/2006/xbrldi`
`xbrldt`	`http://xbrl.org/2005/xbrldt`
`xl`	`http://www.xbrl.org/2003/XLink`
`xlink`	`http://www.w3.org/1999/xlink`
`xs`	`http://www.w3.org/2001/XMLSchema`
`xsi`	`http://www.w3.org/2001/XMLSchema-instance`
`generic`	`http://xbrl.org/2007/generic`

3 Definitions

The figure below provides a model of the composition axis.

Figure 1: Composition Axis Model

A composition axis is an implementation of a predefined axis to specify a subtree of rule and relationship axis elements and their rules.

4.1 Headers

A composition axis does not contribute headers to the subtree of axis-defining elements implementing predefinedAxis abstract class. (All such headers come from ruleAxis and relationshipAxis elements.) As composition axis element is represented using XLink resources in a generic linkbase. No header rendering is implied for associated generic labels or messages, and generic references.

4.2 Syntax

A compositionAxis is represented by a <xtable:compositionAxis> element with an optional subtree of <xtable:predefinedAxis> elements connected by an axis-subtree relationship.

Appendix A Normative schema

The following is the XML schema provided as part of this specification. This is normative. Non-normative versions (which should be identical to these except for appropriate comments indicating their non-normative status) are also provided as separate files for convenience of users of the specification.

NOTE: (non-normative) Following the schema maintenance policy of XBRL International, it is the intent (but is not guaranteed) that the location of non-normative versions of these schemas on the web will be as follows:

While any schema is the most current RECOMMENDED version and until it is superseded by any additional errata corrections a non-normative version will reside on the web in the directory http://www.xbrl.org/2011/ - during the drafting process for this specification this directory should contain a copy of the most recent published version of the schema at http://www.xbrl.org/2011/composition-axis.xsd.
A non-normative version of each schema as corrected by any update to the RECOMMENDATION will be archived in perpetuity on the web in a directory that will contain a unique identification indicating the date of the update.

</schema>

Appendix B References

XML NAMES: W3C (World Wide Web Consortium). "Namespaces in XML 1.0 (Second Edition)"
Tim Bray, Dave Hollander, Andrew Layman, and Richard Tobin.
(See http://www.w3.org/TR/REC-xml-names/)

Appendix C Intellectual property status (non-normative)

This document and translations of it may be copied and furnished to others, and derivative works that comment on or otherwise explain it or assist in its implementation may be prepared, copied, published and distributed, in whole or in part, without restriction of any kind, provided that the above copyright notice and this paragraph are included on all such copies and derivative works. However, this document itself may not be modified in any way, such as by removing the copyright notice or references to XBRL International or XBRL organizations, except as required to translate it into languages other than English. Members of XBRL International agree to grant certain licenses under the XBRL International Intellectual Property Policy (www.xbrl.org/legal).

This document and the information contained herein is provided on an "AS IS" basis and XBRL INTERNATIONAL DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

The attention of users of this document is directed to the possibility that compliance with or adoption of XBRL International specifications may require use of an invention covered by patent rights. XBRL International shall not be responsible for identifying patents for which a license may be required by any XBRL International specification, or for conducting legal inquiries into the legal validity or scope of those patents that are brought to its attention. XBRL International specifications are prospective and advisory only. Prospective users are responsible for protecting themselves against liability for infringement of patents. XBRL International takes no position regarding the validity or scope of any intellectual property or other rights that might be claimed to pertain to the implementation or use of the technology described in this document or the extent to which any license under such rights might or might not be available; neither does it represent that it has made any effort to identify any such rights. Members of XBRL International agree to grant certain licenses under the XBRL International Intellectual Property Policy (www.xbrl.org/legal).

Appendix D Acknowledgements (non-normative)

This document could not have been written without the contributions of many people.

Appendix E Document history (non-normative)

Date	Author	Details
04 December 2011	Herm Fischer	Initial draft

Appendix F Errata corrections in this document

This appendix contains a list of the errata corrections that have been incorporated into this document. This represents all those errata corrections that have been approved by the XBRL International Rendering Working Group up to and including 21 December 2011.

No errata have been incorporated into this document.