nonnum:xmlItemType 

xmlItemType specializes xmlNodesItemType. The unescaped content MUST be well formed XML. This
is a suitable base type for elements whose content must conform to a specific XML Schema or DTD. This content constraint
cannot be captured by a finite length regular expression, other than that "<" must be the first non-whitespace
character and ">" the last non-whitespace character.

Complex Type Information

Model

Attributes

QName Type Fixed Default Use Inheritable Annotation
contextRef IDREF required
id country:ID optional
Wildcard: ANY attribute from ANY namespace OTHER than 'http://www.xbrl.org/2003/instance'

Source 

<complexType name="xmlItemType" id="xmlItemType">
  <annotation>
    <documentation xml:lang="en">xmlItemType specializes xmlNodesItemType. The unescaped content MUST be well formed XML. This is a suitable base type for elements whose content must conform to a specific XML Schema or DTD. This content constraint cannot be captured by a finite length regular expression, other than that "<" must be the first non-whitespace character and ">" the last non-whitespace character.</documentation>
  </annotation>
  <simpleContent>
    <restriction base="nonnum:xmlNodesItemType">
      <attributeGroup ref="xbrli:nonNumericItemAttrs"/>
    </restriction>
  </simpleContent>
</complexType>