nil facts for factvariables in XBRL formula

http://www.xbrl.org/Specification/variables/PER-2011-10-19/variables-PER-2011-10-19.html

xfi functions - XBRL instance functions used in some XBRL Formula

http://www.xbrl.org/Specification/XF-PWD-2006-12-07.htm#_Toc152670680

EuroFiling - European taxonomies

COREP TAXONOMY 
FINREP TAXONOMY 
DATA POINT MODEL 
DRAFT COREP 2012 
DRAFT FINREP 2012 
KRI TAXONOMIES 
BSI-MIR TAXONOMIES 
LE TAXONOMIES 
SOLVENCY II  
http://eurofiling.info/corepTaxonomy/extension_taxonomies.shtml

XBRl Formula - Aspects

The defiition of what Aspects are, useful liust to have when reading the specifications:

XBRL facts are not just values. They are supported by a wide range of additional information that provides the information necessary to interpret the values contained by XBRL facts.

An aspect is defined as one part of the additional information about an XBRL fact.

http://xbrl.org/Specification/variables/PER-2011-10-19/variables-PER-2011-10-19.html#sec-aspects


There are a number of different ways that the additional information about an XBRL fact can be separated into a set of aspects. For example, the entity identification information could be treated as a single aspect or it could be treated as an entity identification scheme aspect and an entity identification value aspect. More significantly, the content of a segment or scenario can be treated as a single aspect or it can be broken down into a potentially large number of aspects.\

http://xbrl.org/Specification/variables/PER-2011-10-19/variables-PER-2011-10-19.html#sec-aspect-model

XBRL Formula Training materials

Eurofiling Formula Training PPT

XBRL Onthology

http://groups.google.com/group/xbrl-ontology-specification-group?pli=1
http://groups.google.com/group/xbrl-ontology-specification-group/msg/a4172167a42bab6e

XBRL Formula Specifications - Assertion and Formula Messages

Formula Specification 1.0 - 2009 - 2011 - Recommendation Status
http://www.xbrl.org/SpecRecommendations

XBRL Formula Messages vs Labels
http://www.xbrl.org/Specification/genericMessages/REC-2011-10-24/genericMessages-REC-2011-10-24.html

Generic labels document XBRL resources, whereas messages are meant to document events, situations or results in a process supported by XBRL.

Generic labels are limited to have only static strings or XTHML fragments. In contrast, messages can include XPath expression in its content in order to calculate, for instance, the deviation of the value of a derived fact from the aspect-matched input fact in a consistency assertion.


Formula Validation Messages:

http://www.xbrl.org/WGN/XBRL-formula-overview/PWD-2011-12-21/XBRL-formula-overview-WGN-PWD-2011-12-21.html#section-validation-messages

Other Formula related changes since the XBRL Formula 1.0 specification:

Proposed Edited Recommendations
Variables 1.0 - October 19, 2011
Match Filters 1.0 - October 19, 2011
Generic Labels - March 21, 2011
Function Definitions - June 23, 2010

Proposed Recommendations
Generic Preferred Label 1.0 - January 25, 2012


Candidate Recommendations
Formula Tuples 1.0 - November 30, 2011
Variables-Scope Relationships 1.0 - November 30, 2011
Formula Extension Modules - Instances - Call for Implementations - October 19, 2011

Public Working Drafts
Function Registry Processes - August 3, 2007 Formula Extension Modules - December 16, 2009