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